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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.93 by jsr166, Sun Dec 16 17:22:42 2012 UTC vs.
Revision 1.255 by jsr166, Sun Jul 28 18:09:25 2019 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;
103	<	import static java.util.concurrent.TimeUnit.MILLISECONDS;
104	<	import static java.util.concurrent.TimeUnit.NANOSECONDS;
105	<	import java.security.CodeSource;
106	<	import java.security.Permission;
107	<	import java.security.PermissionCollection;
108	<	import java.security.Permissions;
30	<	import java.security.Policy;
31	<	import java.security.ProtectionDomain;
32	<	import java.security.SecurityPermission;
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 41 | Line 117 | import java.security.SecurityPermission;
117		*
118		* <ol>
119		*
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>
120	>	* <li>All code not running in the main test thread (manually spawned threads
121	>	* or the common fork join pool) must be checked for failure (and completion!).
122	>	* Mechanisms that can be used to ensure this are:
123	>	*   <ol>
124	>	*   <li>Signalling via a synchronizer like AtomicInteger or CountDownLatch
125	>	*    that the task completed normally, which is checked before returning from
126	>	*    the test method in the main thread.
127	>	*   <li>Using the forms {@link #threadFail}, {@link #threadAssertTrue},
128	>	*    or {@link #threadAssertNull}, (not {@code fail}, {@code assertTrue}, etc.)
129	>	*    Only the most typically used JUnit assertion methods are defined
130	>	*    this way, but enough to live with.
131	>	*   <li>Recording failure explicitly using {@link #threadUnexpectedException}
132	>	*    or {@link #threadRecordFailure}.
133	>	*   <li>Using a wrapper like CheckedRunnable that uses one the mechanisms above.
134	>	*   </ol>
135		*
136	<	* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
136	>	* <li>If you override {@link #setUp} or {@link #tearDown}, make sure
137		* to invoke {@code super.setUp} and {@code super.tearDown} within
138		* them. These methods are used to clear and check for thread
139	<	* assertion failures.</li>
139	>	* assertion failures.
140		*
141		* <li>All delays and timeouts must use one of the constants {@code
142		* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
#	Line 63 | Line 147 | import java.security.SecurityPermission;
147		* is always discriminable as larger than SHORT and smaller than
148		* MEDIUM.  And so on. These constants are set to conservative values,
149		* but even so, if there is ever any doubt, they can all be increased
150	<	* in one spot to rerun tests on slower platforms.</li>
150	>	* in one spot to rerun tests on slower platforms.
151		*
152	<	* <li> All threads generated must be joined inside each test case
152	>	* <li>All threads generated must be joined inside each test case
153		* method (or {@code fail} to do so) before returning from the
154		* method. The {@code joinPool} method can be used to do this when
155	<	* using Executors.</li>
155	>	* using Executors.
156		*
157		* </ol>
158		*
159		* <p><b>Other notes</b>
160		* <ul>
161		*
162	<	* <li> Usually, there is one testcase method per JSR166 method
162	>	* <li>Usually, there is one testcase method per JSR166 method
163		* covering "normal" operation, and then as many exception-testing
164		* methods as there are exceptions the method can throw. Sometimes
165		* there are multiple tests per JSR166 method when the different
166		* "normal" behaviors differ significantly. And sometimes testcases
167	<	* cover multiple methods when they cannot be tested in
84	<	* isolation.</li>
167	>	* cover multiple methods when they cannot be tested in isolation.
168		*
169	<	* <li> The documentation style for testcases is to provide as javadoc
169	>	* <li>The documentation style for testcases is to provide as javadoc
170		* a simple sentence or two describing the property that the testcase
171		* method purports to test. The javadocs do not say anything about how
172	<	* the property is tested. To find out, read the code.</li>
172	>	* the property is tested. To find out, read the code.
173		*
174	<	* <li> These tests are "conformance tests", and do not attempt to
174	>	* <li>These tests are "conformance tests", and do not attempt to
175		* test throughput, latency, scalability or other performance factors
176		* (see the separate "jtreg" tests for a set intended to check these
177		* for the most central aspects of functionality.) So, most tests use
178		* the smallest sensible numbers of threads, collection sizes, etc
179	<	* needed to check basic conformance.</li>
179	>	* needed to check basic conformance.
180		*
181		* <li>The test classes currently do not declare inclusion in
182		* any particular package to simplify things for people integrating
183	<	* them in TCK test suites.</li>
183	>	* them in TCK test suites.
184		*
185	<	* <li> As a convenience, the {@code main} of this class (JSR166TestCase)
186	<	* runs all JSR166 unit tests.</li>
185	>	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
186	>	* runs all JSR166 unit tests.
187		*
188		* </ul>
189		*/
#	Line 112 | Line 195 | public class JSR166TestCase extends Test
195		Boolean.getBoolean("jsr166.expensiveTests");
196
197		/**
198	+	* If true, also run tests that are not part of the official tck
199	+	* because they test unspecified implementation details.
200	+	*/
201	+	protected static final boolean testImplementationDetails =
202	+	Boolean.getBoolean("jsr166.testImplementationDetails");
203	+
204	+	/**
205		* If true, report on stdout all "slow" tests, that is, ones that
206		* take more than profileThreshold milliseconds to execute.
207		*/
#	Line 125 | Line 215 | public class JSR166TestCase extends Test
215		private static final long profileThreshold =
216		Long.getLong("jsr166.profileThreshold", 100);
217
218	+	/**
219	+	* The number of repetitions per test (for tickling rare bugs).
220	+	*/
221	+	private static final int runsPerTest =
222	+	Integer.getInteger("jsr166.runsPerTest", 1);
223	+
224	+	/**
225	+	* The number of repetitions of the test suite (for finding leaks?).
226	+	*/
227	+	private static final int suiteRuns =
228	+	Integer.getInteger("jsr166.suiteRuns", 1);
229	+
230	+	/**
231	+	* Returns the value of the system property, or NaN if not defined.
232	+	*/
233	+	private static float systemPropertyValue(String name) {
234	+	String floatString = System.getProperty(name);
235	+	if (floatString == null)
236	+	return Float.NaN;
237	+	try {
238	+	return Float.parseFloat(floatString);
239	+	} catch (NumberFormatException ex) {
240	+	throw new IllegalArgumentException(
241	+	String.format("Bad float value in system property %s=%s",
242	+	name, floatString));
243	+	}
244	+	}
245	+
246	+	/**
247	+	* The scaling factor to apply to standard delays used in tests.
248	+	* May be initialized from any of:
249	+	* - the "jsr166.delay.factor" system property
250	+	* - the "test.timeout.factor" system property (as used by jtreg)
251	+	*   See: http://openjdk.java.net/jtreg/tag-spec.html
252	+	* - hard-coded fuzz factor when using a known slowpoke VM
253	+	*/
254	+	private static final float delayFactor = delayFactor();
255	+
256	+	private static float delayFactor() {
257	+	float x;
258	+	if (!Float.isNaN(x = systemPropertyValue("jsr166.delay.factor")))
259	+	return x;
260	+	if (!Float.isNaN(x = systemPropertyValue("test.timeout.factor")))
261	+	return x;
262	+	String prop = System.getProperty("java.vm.version");
263	+	if (prop != null && prop.matches(".*debug.*"))
264	+	return 4.0f; // How much slower is fastdebug than product?!
265	+	return 1.0f;
266	+	}
267	+
268	+	public JSR166TestCase() { super(); }
269	+	public JSR166TestCase(String name) { super(name); }
270	+
271	+	/**
272	+	* A filter for tests to run, matching strings of the form
273	+	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
274	+	* Usefully combined with jsr166.runsPerTest.
275	+	*/
276	+	private static final Pattern methodFilter = methodFilter();
277	+
278	+	private static Pattern methodFilter() {
279	+	String regex = System.getProperty("jsr166.methodFilter");
280	+	return (regex == null) ? null : Pattern.compile(regex);
281	+	}
282	+
283	+	// Instrumentation to debug very rare, but very annoying hung test runs.
284	+	static volatile TestCase currentTestCase;
285	+	// static volatile int currentRun = 0;
286	+	static {
287	+	Runnable checkForWedgedTest = new Runnable() { public void run() {
288	+	// Avoid spurious reports with enormous runsPerTest.
289	+	// A single test case run should never take more than 1 second.
290	+	// But let's cap it at the high end too ...
291	+	final int timeoutMinutesMin = Math.max(runsPerTest / 60, 1)
292	+	* Math.max((int) delayFactor, 1);
293	+	final int timeoutMinutes = Math.min(15, timeoutMinutesMin);
294	+	for (TestCase lastTestCase = currentTestCase;;) {
295	+	try { MINUTES.sleep(timeoutMinutes); }
296	+	catch (InterruptedException unexpected) { break; }
297	+	if (lastTestCase == currentTestCase) {
298	+	System.err.printf(
299	+	"Looks like we're stuck running test: %s%n",
300	+	lastTestCase);
301	+	//                     System.err.printf(
302	+	//                         "Looks like we're stuck running test: %s (%d/%d)%n",
303	+	//                         lastTestCase, currentRun, runsPerTest);
304	+	//                     System.err.println("availableProcessors=" +
305	+	//                         Runtime.getRuntime().availableProcessors());
306	+	//                     System.err.printf("cpu model = %s%n", cpuModel());
307	+	dumpTestThreads();
308	+	// one stack dump is probably enough; more would be spam
309	+	break;
310	+	}
311	+	lastTestCase = currentTestCase;
312	+	}}};
313	+	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
314	+	thread.setDaemon(true);
315	+	thread.start();
316	+	}
317	+
318	+	//     public static String cpuModel() {
319	+	//         try {
320	+	//             java.util.regex.Matcher matcher
321	+	//               = Pattern.compile("model name\\s*: (.*)")
322	+	//                 .matcher(new String(
323	+	//                     java.nio.file.Files.readAllBytes(
324	+	//                         java.nio.file.Paths.get("/proc/cpuinfo")), "UTF-8"));
325	+	//             matcher.find();
326	+	//             return matcher.group(1);
327	+	//         } catch (Exception ex) { return null; }
328	+	//     }
329	+
330	+	public void runBare() throws Throwable {
331	+	currentTestCase = this;
332	+	if (methodFilter == null
333	+	|| methodFilter.matcher(toString()).find())
334	+	super.runBare();
335	+	}
336	+
337		protected void runTest() throws Throwable {
338	<	if (profileTests)
339	<	runTestProfiled();
340	<	else
341	<	super.runTest();
338	>	for (int i = 0; i < runsPerTest; i++) {
339	>	// currentRun = i;
340	>	if (profileTests)
341	>	runTestProfiled();
342	>	else
343	>	super.runTest();
344	>	}
345		}
346
347		protected void runTestProfiled() throws Throwable {
348	<	long t0 = System.nanoTime();
349	<	try {
348	>	for (int i = 0; i < 2; i++) {
349	>	long startTime = System.nanoTime();
350		super.runTest();
351	<	} finally {
352	<	long elapsedMillis =
353	<	(System.nanoTime() - t0) / (1000L * 1000L);
354	<	if (elapsedMillis >= profileThreshold)
351	>	long elapsedMillis = millisElapsedSince(startTime);
352	>	if (elapsedMillis < profileThreshold)
353	>	break;
354	>	// Never report first run of any test; treat it as a
355	>	// warmup run, notably to trigger all needed classloading,
356	>	if (i > 0)
357		System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
358		}
359		}
360
361		/**
362	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
362	>	* Runs all JSR166 unit tests using junit.textui.TestRunner.
363		*/
364		public static void main(String[] args) {
365	+	main(suite(), args);
366	+	}
367	+
368	+	static class PithyResultPrinter extends junit.textui.ResultPrinter {
369	+	PithyResultPrinter(java.io.PrintStream writer) { super(writer); }
370	+	long runTime;
371	+	public void startTest(Test test) {}
372	+	protected void printHeader(long runTime) {
373	+	this.runTime = runTime; // defer printing for later
374	+	}
375	+	protected void printFooter(TestResult result) {
376	+	if (result.wasSuccessful()) {
377	+	getWriter().println("OK (" + result.runCount() + " tests)"
378	+	+ "  Time: " + elapsedTimeAsString(runTime));
379	+	} else {
380	+	getWriter().println("Time: " + elapsedTimeAsString(runTime));
381	+	super.printFooter(result);
382	+	}
383	+	}
384	+	}
385	+
386	+	/**
387	+	* Returns a TestRunner that doesn't bother with unnecessary
388	+	* fluff, like printing a "." for each test case.
389	+	*/
390	+	static junit.textui.TestRunner newPithyTestRunner() {
391	+	junit.textui.TestRunner runner = new junit.textui.TestRunner();
392	+	runner.setPrinter(new PithyResultPrinter(System.out));
393	+	return runner;
394	+	}
395	+
396	+	/**
397	+	* Runs all unit tests in the given test suite.
398	+	* Actual behavior influenced by jsr166.* system properties.
399	+	*/
400	+	static void main(Test suite, String[] args) {
401		if (useSecurityManager) {
402		System.err.println("Setting a permissive security manager");
403		Policy.setPolicy(permissivePolicy());
404		System.setSecurityManager(new SecurityManager());
405		}
406	<	int iters = (args.length == 0) ? 1 : Integer.parseInt(args[0]);
407	<
408	<	Test s = suite();
409	<	for (int i = 0; i < iters; ++i) {
160	<	junit.textui.TestRunner.run(s);
406	>	for (int i = 0; i < suiteRuns; i++) {
407	>	TestResult result = newPithyTestRunner().doRun(suite);
408	>	if (!result.wasSuccessful())
409	>	System.exit(1);
410		System.gc();
411		System.runFinalization();
412		}
164	–	System.exit(0);
413		}
414
415		public static TestSuite newTestSuite(Object... suiteOrClasses) {
#	Line 177 | Line 425 | public class JSR166TestCase extends Test
425		return suite;
426		}
427
428	+	public static void addNamedTestClasses(TestSuite suite,
429	+	String... testClassNames) {
430	+	for (String testClassName : testClassNames) {
431	+	try {
432	+	Class<?> testClass = Class.forName(testClassName);
433	+	Method m = testClass.getDeclaredMethod("suite");
434	+	suite.addTest(newTestSuite((Test)m.invoke(null)));
435	+	} catch (ReflectiveOperationException e) {
436	+	throw new AssertionError("Missing test class", e);
437	+	}
438	+	}
439	+	}
440	+
441	+	public static final double JAVA_CLASS_VERSION;
442	+	public static final String JAVA_SPECIFICATION_VERSION;
443	+	static {
444	+	try {
445	+	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
446	+	new java.security.PrivilegedAction<Double>() {
447	+	public Double run() {
448	+	return Double.valueOf(System.getProperty("java.class.version"));}});
449	+	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
450	+	new java.security.PrivilegedAction<String>() {
451	+	public String run() {
452	+	return System.getProperty("java.specification.version");}});
453	+	} catch (Throwable t) {
454	+	throw new Error(t);
455	+	}
456	+	}
457	+
458	+	public static boolean atLeastJava6()  { return JAVA_CLASS_VERSION >= 50.0; }
459	+	public static boolean atLeastJava7()  { return JAVA_CLASS_VERSION >= 51.0; }
460	+	public static boolean atLeastJava8()  { return JAVA_CLASS_VERSION >= 52.0; }
461	+	public static boolean atLeastJava9()  { return JAVA_CLASS_VERSION >= 53.0; }
462	+	public static boolean atLeastJava10() { return JAVA_CLASS_VERSION >= 54.0; }
463	+	public static boolean atLeastJava11() { return JAVA_CLASS_VERSION >= 55.0; }
464	+	public static boolean atLeastJava12() { return JAVA_CLASS_VERSION >= 56.0; }
465	+	public static boolean atLeastJava13() { return JAVA_CLASS_VERSION >= 57.0; }
466	+	public static boolean atLeastJava14() { return JAVA_CLASS_VERSION >= 58.0; }
467	+	public static boolean atLeastJava15() { return JAVA_CLASS_VERSION >= 59.0; }
468	+	public static boolean atLeastJava16() { return JAVA_CLASS_VERSION >= 60.0; }
469	+	public static boolean atLeastJava17() { return JAVA_CLASS_VERSION >= 61.0; }
470	+
471		/**
472		* Collects all JSR166 unit tests as one suite.
473		*/
474		public static Test suite() {
475	<	return newTestSuite(
475	>	// Java7+ test classes
476	>	TestSuite suite = newTestSuite(
477		ForkJoinPoolTest.suite(),
478		ForkJoinTaskTest.suite(),
479		RecursiveActionTest.suite(),
#	Line 195 | Line 487 | public class JSR166TestCase extends Test
487		AbstractQueuedLongSynchronizerTest.suite(),
488		ArrayBlockingQueueTest.suite(),
489		ArrayDequeTest.suite(),
490	+	ArrayListTest.suite(),
491		AtomicBooleanTest.suite(),
492		AtomicIntegerArrayTest.suite(),
493		AtomicIntegerFieldUpdaterTest.suite(),
#	Line 217 | Line 510 | public class JSR166TestCase extends Test
510		CopyOnWriteArrayListTest.suite(),
511		CopyOnWriteArraySetTest.suite(),
512		CountDownLatchTest.suite(),
513	+	CountedCompleterTest.suite(),
514		CyclicBarrierTest.suite(),
515		DelayQueueTest.suite(),
516		EntryTest.suite(),
#	Line 224 | Line 518 | public class JSR166TestCase extends Test
518		ExecutorsTest.suite(),
519		ExecutorCompletionServiceTest.suite(),
520		FutureTaskTest.suite(),
521	+	HashtableTest.suite(),
522		LinkedBlockingDequeTest.suite(),
523		LinkedBlockingQueueTest.suite(),
524		LinkedListTest.suite(),
#	Line 245 | Line 540 | public class JSR166TestCase extends Test
540		TreeMapTest.suite(),
541		TreeSetTest.suite(),
542		TreeSubMapTest.suite(),
543	<	TreeSubSetTest.suite());
543	>	TreeSubSetTest.suite(),
544	>	VectorTest.suite());
545	>
546	>	// Java8+ test classes
547	>	if (atLeastJava8()) {
548	>	String[] java8TestClassNames = {
549	>	"ArrayDeque8Test",
550	>	"Atomic8Test",
551	>	"CompletableFutureTest",
552	>	"ConcurrentHashMap8Test",
553	>	"CountedCompleter8Test",
554	>	"DoubleAccumulatorTest",
555	>	"DoubleAdderTest",
556	>	"ForkJoinPool8Test",
557	>	"ForkJoinTask8Test",
558	>	"HashMapTest",
559	>	"LinkedBlockingDeque8Test",
560	>	"LinkedBlockingQueue8Test",
561	>	"LinkedHashMapTest",
562	>	"LongAccumulatorTest",
563	>	"LongAdderTest",
564	>	"SplittableRandomTest",
565	>	"StampedLockTest",
566	>	"SubmissionPublisherTest",
567	>	"ThreadLocalRandom8Test",
568	>	"TimeUnit8Test",
569	>	};
570	>	addNamedTestClasses(suite, java8TestClassNames);
571	>	}
572	>
573	>	// Java9+ test classes
574	>	if (atLeastJava9()) {
575	>	String[] java9TestClassNames = {
576	>	"AtomicBoolean9Test",
577	>	"AtomicInteger9Test",
578	>	"AtomicIntegerArray9Test",
579	>	"AtomicLong9Test",
580	>	"AtomicLongArray9Test",
581	>	"AtomicReference9Test",
582	>	"AtomicReferenceArray9Test",
583	>	"ExecutorCompletionService9Test",
584	>	"ForkJoinPool9Test",
585	>	};
586	>	addNamedTestClasses(suite, java9TestClassNames);
587	>	}
588	>
589	>	return suite;
590		}
591
592	+	/** Returns list of junit-style test method names in given class. */
593	+	public static ArrayList<String> testMethodNames(Class<?> testClass) {
594	+	Method[] methods = testClass.getDeclaredMethods();
595	+	ArrayList<String> names = new ArrayList<>(methods.length);
596	+	for (Method method : methods) {
597	+	if (method.getName().startsWith("test")
598	+	&& Modifier.isPublic(method.getModifiers())
599	+	// method.getParameterCount() requires jdk8+
600	+	&& method.getParameterTypes().length == 0) {
601	+	names.add(method.getName());
602	+	}
603	+	}
604	+	return names;
605	+	}
606	+
607	+	/**
608	+	* Returns junit-style testSuite for the given test class, but
609	+	* parameterized by passing extra data to each test.
610	+	*/
611	+	public static <ExtraData> Test parameterizedTestSuite
612	+	(Class<? extends JSR166TestCase> testClass,
613	+	Class<ExtraData> dataClass,
614	+	ExtraData data) {
615	+	try {
616	+	TestSuite suite = new TestSuite();
617	+	Constructor c =
618	+	testClass.getDeclaredConstructor(dataClass, String.class);
619	+	for (String methodName : testMethodNames(testClass))
620	+	suite.addTest((Test) c.newInstance(data, methodName));
621	+	return suite;
622	+	} catch (ReflectiveOperationException e) {
623	+	throw new AssertionError(e);
624	+	}
625	+	}
626	+
627	+	/**
628	+	* Returns junit-style testSuite for the jdk8 extension of the
629	+	* given test class, but parameterized by passing extra data to
630	+	* each test.  Uses reflection to allow compilation in jdk7.
631	+	*/
632	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
633	+	(Class<? extends JSR166TestCase> testClass,
634	+	Class<ExtraData> dataClass,
635	+	ExtraData data) {
636	+	if (atLeastJava8()) {
637	+	String name = testClass.getName();
638	+	String name8 = name.replaceAll("Test$", "8Test");
639	+	if (name.equals(name8)) throw new AssertionError(name);
640	+	try {
641	+	return (Test)
642	+	Class.forName(name8)
643	+	.getMethod("testSuite", dataClass)
644	+	.invoke(null, data);
645	+	} catch (ReflectiveOperationException e) {
646	+	throw new AssertionError(e);
647	+	}
648	+	} else {
649	+	return new TestSuite();
650	+	}
651	+	}
652	+
653	+	// Delays for timing-dependent tests, in milliseconds.
654
655		public static long SHORT_DELAY_MS;
656		public static long SMALL_DELAY_MS;
657		public static long MEDIUM_DELAY_MS;
658		public static long LONG_DELAY_MS;
659
660	+	private static final long RANDOM_TIMEOUT;
661	+	private static final long RANDOM_EXPIRED_TIMEOUT;
662	+	private static final TimeUnit RANDOM_TIMEUNIT;
663	+	static {
664	+	ThreadLocalRandom rnd = ThreadLocalRandom.current();
665	+	long[] timeouts = { Long.MIN_VALUE, -1, 0, 1, Long.MAX_VALUE };
666	+	RANDOM_TIMEOUT = timeouts[rnd.nextInt(timeouts.length)];
667	+	RANDOM_EXPIRED_TIMEOUT = timeouts[rnd.nextInt(3)];
668	+	TimeUnit[] timeUnits = TimeUnit.values();
669	+	RANDOM_TIMEUNIT = timeUnits[rnd.nextInt(timeUnits.length)];
670	+	}
671	+
672	+	/**
673	+	* Returns a timeout for use when any value at all will do.
674	+	*/
675	+	static long randomTimeout() { return RANDOM_TIMEOUT; }
676	+
677	+	/**
678	+	* Returns a timeout that means "no waiting", i.e. not positive.
679	+	*/
680	+	static long randomExpiredTimeout() { return RANDOM_EXPIRED_TIMEOUT; }
681	+
682	+	/**
683	+	* Returns a random non-null TimeUnit.
684	+	*/
685	+	static TimeUnit randomTimeUnit() { return RANDOM_TIMEUNIT; }
686
687		/**
688	<	* Returns the shortest timed delay. This could
689	<	* be reimplemented to use for example a Property.
688	>	* Returns the shortest timed delay. This can be scaled up for
689	>	* slow machines using the jsr166.delay.factor system property,
690	>	* or via jtreg's -timeoutFactor: flag.
691	>	* http://openjdk.java.net/jtreg/command-help.html
692		*/
693		protected long getShortDelay() {
694	<	return 50;
694	>	return (long) (50 * delayFactor);
695		}
696
697		/**
#	Line 273 | Line 704 | public class JSR166TestCase extends Test
704		LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
705		}
706
707	+	private static final long TIMEOUT_DELAY_MS
708	+	= (long) (12.0 * Math.cbrt(delayFactor));
709	+
710		/**
711	<	* Returns a timeout in milliseconds to be used in tests that
712	<	* verify that operations block or time out.
711	>	* Returns a timeout in milliseconds to be used in tests that verify
712	>	* that operations block or time out.  We want this to be longer
713	>	* than the OS scheduling quantum, but not too long, so don't scale
714	>	* linearly with delayFactor; we use "crazy" cube root instead.
715		*/
716	<	long timeoutMillis() {
717	<	return SHORT_DELAY_MS / 4;
716	>	static long timeoutMillis() {
717	>	return TIMEOUT_DELAY_MS;
718		}
719
720		/**
721	<	* Returns a new Date instance representing a time delayMillis
722	<	* milliseconds in the future.
721	>	* Returns a new Date instance representing a time at least
722	>	* delayMillis milliseconds in the future.
723		*/
724		Date delayedDate(long delayMillis) {
725	<	return new Date(System.currentTimeMillis() + delayMillis);
725	>	// Add 1 because currentTimeMillis is known to round into the past.
726	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
727		}
728
729		/**
730		* The first exception encountered if any threadAssertXXX method fails.
731		*/
732		private final AtomicReference<Throwable> threadFailure
733	<	= new AtomicReference<Throwable>(null);
733	>	= new AtomicReference<>(null);
734
735		/**
736		* Records an exception so that it can be rethrown later in the test
#	Line 302 | Line 739 | public class JSR166TestCase extends Test
739		* the same test have no effect.
740		*/
741		public void threadRecordFailure(Throwable t) {
742	+	System.err.println(t);
743	+	dumpTestThreads();
744		threadFailure.compareAndSet(null, t);
745		}
746
#	Line 309 | Line 748 | public class JSR166TestCase extends Test
748		setDelays();
749		}
750
751	+	void tearDownFail(String format, Object... args) {
752	+	String msg = toString() + ": " + String.format(format, args);
753	+	System.err.println(msg);
754	+	dumpTestThreads();
755	+	throw new AssertionError(msg);
756	+	}
757	+
758		/**
759		* Extra checks that get done for all test cases.
760		*
#	Line 327 | Line 773 | public class JSR166TestCase extends Test
773		throw (RuntimeException) t;
774		else if (t instanceof Exception)
775		throw (Exception) t;
776	<	else {
777	<	AssertionFailedError afe =
332	<	new AssertionFailedError(t.toString());
333	<	afe.initCause(t);
334	<	throw afe;
335	<	}
776	>	else
777	>	throw new AssertionError(t.toString(), t);
778		}
779
780		if (Thread.interrupted())
781	<	throw new AssertionFailedError("interrupt status set in main thread");
781	>	tearDownFail("interrupt status set in main thread");
782	>
783	>	checkForkJoinPoolThreadLeaks();
784	>	}
785	>
786	>	/**
787	>	* Finds missing PoolCleaners
788	>	*/
789	>	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
790	>	Thread[] survivors = new Thread[7];
791	>	int count = Thread.enumerate(survivors);
792	>	for (int i = 0; i < count; i++) {
793	>	Thread thread = survivors[i];
794	>	String name = thread.getName();
795	>	if (name.startsWith("ForkJoinPool-")) {
796	>	// give thread some time to terminate
797	>	thread.join(LONG_DELAY_MS);
798	>	if (thread.isAlive())
799	>	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
800	>	thread);
801	>	}
802	>	}
803	>
804	>	if (!ForkJoinPool.commonPool()
805	>	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
806	>	tearDownFail("ForkJoin common pool thread stuck");
807		}
808
809		/**
810		* Just like fail(reason), but additionally recording (using
811	<	* threadRecordFailure) any AssertionFailedError thrown, so that
812	<	* the current testcase will fail.
811	>	* threadRecordFailure) any AssertionError thrown, so that the
812	>	* current testcase will fail.
813		*/
814		public void threadFail(String reason) {
815		try {
816		fail(reason);
817	<	} catch (AssertionFailedError t) {
818	<	threadRecordFailure(t);
819	<	fail(reason);
817	>	} catch (AssertionError fail) {
818	>	threadRecordFailure(fail);
819	>	throw fail;
820		}
821		}
822
823		/**
824		* Just like assertTrue(b), but additionally recording (using
825	<	* threadRecordFailure) any AssertionFailedError thrown, so that
826	<	* the current testcase will fail.
825	>	* threadRecordFailure) any AssertionError thrown, so that the
826	>	* current testcase will fail.
827		*/
828		public void threadAssertTrue(boolean b) {
829		try {
830		assertTrue(b);
831	<	} catch (AssertionFailedError t) {
832	<	threadRecordFailure(t);
833	<	throw t;
831	>	} catch (AssertionError fail) {
832	>	threadRecordFailure(fail);
833	>	throw fail;
834		}
835		}
836
837		/**
838		* Just like assertFalse(b), but additionally recording (using
839	<	* threadRecordFailure) any AssertionFailedError thrown, so that
840	<	* the current testcase will fail.
839	>	* threadRecordFailure) any AssertionError thrown, so that the
840	>	* current testcase will fail.
841		*/
842		public void threadAssertFalse(boolean b) {
843		try {
844		assertFalse(b);
845	<	} catch (AssertionFailedError t) {
846	<	threadRecordFailure(t);
847	<	throw t;
845	>	} catch (AssertionError fail) {
846	>	threadRecordFailure(fail);
847	>	throw fail;
848		}
849		}
850
851		/**
852		* Just like assertNull(x), but additionally recording (using
853	<	* threadRecordFailure) any AssertionFailedError thrown, so that
854	<	* the current testcase will fail.
853	>	* threadRecordFailure) any AssertionError thrown, so that the
854	>	* current testcase will fail.
855		*/
856		public void threadAssertNull(Object x) {
857		try {
858		assertNull(x);
859	<	} catch (AssertionFailedError t) {
860	<	threadRecordFailure(t);
861	<	throw t;
859	>	} catch (AssertionError fail) {
860	>	threadRecordFailure(fail);
861	>	throw fail;
862		}
863		}
864
865		/**
866		* Just like assertEquals(x, y), but additionally recording (using
867	<	* threadRecordFailure) any AssertionFailedError thrown, so that
868	<	* the current testcase will fail.
867	>	* threadRecordFailure) any AssertionError thrown, so that the
868	>	* current testcase will fail.
869		*/
870		public void threadAssertEquals(long x, long y) {
871		try {
872		assertEquals(x, y);
873	<	} catch (AssertionFailedError t) {
874	<	threadRecordFailure(t);
875	<	throw t;
873	>	} catch (AssertionError fail) {
874	>	threadRecordFailure(fail);
875	>	throw fail;
876		}
877		}
878
879		/**
880		* Just like assertEquals(x, y), but additionally recording (using
881	<	* threadRecordFailure) any AssertionFailedError thrown, so that
882	<	* the current testcase will fail.
881	>	* threadRecordFailure) any AssertionError thrown, so that the
882	>	* current testcase will fail.
883		*/
884		public void threadAssertEquals(Object x, Object y) {
885		try {
886		assertEquals(x, y);
887	<	} catch (AssertionFailedError t) {
888	<	threadRecordFailure(t);
889	<	throw t;
890	<	} catch (Throwable t) {
891	<	threadUnexpectedException(t);
887	>	} catch (AssertionError fail) {
888	>	threadRecordFailure(fail);
889	>	throw fail;
890	>	} catch (Throwable fail) {
891	>	threadUnexpectedException(fail);
892		}
893		}
894
895		/**
896		* Just like assertSame(x, y), but additionally recording (using
897	<	* threadRecordFailure) any AssertionFailedError thrown, so that
898	<	* the current testcase will fail.
897	>	* threadRecordFailure) any AssertionError thrown, so that the
898	>	* current testcase will fail.
899		*/
900		public void threadAssertSame(Object x, Object y) {
901		try {
902		assertSame(x, y);
903	<	} catch (AssertionFailedError t) {
904	<	threadRecordFailure(t);
905	<	throw t;
903	>	} catch (AssertionError fail) {
904	>	threadRecordFailure(fail);
905	>	throw fail;
906		}
907		}
908
#	Line 455 | Line 922 | public class JSR166TestCase extends Test
922
923		/**
924		* Records the given exception using {@link #threadRecordFailure},
925	<	* then rethrows the exception, wrapping it in an
926	<	* AssertionFailedError if necessary.
925	>	* then rethrows the exception, wrapping it in an AssertionError
926	>	* if necessary.
927		*/
928		public void threadUnexpectedException(Throwable t) {
929		threadRecordFailure(t);
#	Line 465 | Line 932 | public class JSR166TestCase extends Test
932		throw (RuntimeException) t;
933		else if (t instanceof Error)
934		throw (Error) t;
935	<	else {
936	<	AssertionFailedError afe =
470	<	new AssertionFailedError("unexpected exception: " + t);
471	<	afe.initCause(t);
472	<	throw afe;
473	<	}
935	>	else
936	>	throw new AssertionError("unexpected exception: " + t, t);
937		}
938
939		/**
940		* Delays, via Thread.sleep, for the given millisecond delay, but
941		* if the sleep is shorter than specified, may re-sleep or yield
942	<	* until time elapses.
942	>	* until time elapses.  Ensures that the given time, as measured
943	>	* by System.nanoTime(), has elapsed.
944		*/
945		static void delay(long millis) throws InterruptedException {
946	<	long startTime = System.nanoTime();
947	<	long ns = millis * 1000 * 1000;
948	<	for (;;) {
946	>	long nanos = millis * (1000 * 1000);
947	>	final long wakeupTime = System.nanoTime() + nanos;
948	>	do {
949		if (millis > 0L)
950		Thread.sleep(millis);
951		else // too short to sleep
952		Thread.yield();
953	<	long d = ns - (System.nanoTime() - startTime);
954	<	if (d > 0L)
955	<	millis = d / (1000 * 1000);
956	<	else
957	<	break;
953	>	nanos = wakeupTime - System.nanoTime();
954	>	millis = nanos / (1000 * 1000);
955	>	} while (nanos >= 0L);
956	>	}
957	>
958	>	/**
959	>	* Allows use of try-with-resources with per-test thread pools.
960	>	*/
961	>	class PoolCleaner implements AutoCloseable {
962	>	private final ExecutorService pool;
963	>	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
964	>	public void close() { joinPool(pool); }
965	>	}
966	>
967	>	/**
968	>	* An extension of PoolCleaner that has an action to release the pool.
969	>	*/
970	>	class PoolCleanerWithReleaser extends PoolCleaner {
971	>	private final Runnable releaser;
972	>	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
973	>	super(pool);
974	>	this.releaser = releaser;
975	>	}
976	>	public void close() {
977	>	try {
978	>	releaser.run();
979	>	} finally {
980	>	super.close();
981	>	}
982		}
983		}
984
985	+	PoolCleaner cleaner(ExecutorService pool) {
986	+	return new PoolCleaner(pool);
987	+	}
988	+
989	+	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
990	+	return new PoolCleanerWithReleaser(pool, releaser);
991	+	}
992	+
993	+	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
994	+	return new PoolCleanerWithReleaser(pool, releaser(latch));
995	+	}
996	+
997	+	Runnable releaser(final CountDownLatch latch) {
998	+	return new Runnable() { public void run() {
999	+	do { latch.countDown(); }
1000	+	while (latch.getCount() > 0);
1001	+	}};
1002	+	}
1003	+
1004	+	PoolCleaner cleaner(ExecutorService pool, AtomicBoolean flag) {
1005	+	return new PoolCleanerWithReleaser(pool, releaser(flag));
1006	+	}
1007	+
1008	+	Runnable releaser(final AtomicBoolean flag) {
1009	+	return new Runnable() { public void run() { flag.set(true); }};
1010	+	}
1011	+
1012		/**
1013		* Waits out termination of a thread pool or fails doing so.
1014		*/
1015	<	void joinPool(ExecutorService exec) {
1015	>	void joinPool(ExecutorService pool) {
1016		try {
1017	<	exec.shutdown();
1018	<	assertTrue("ExecutorService did not terminate in a timely manner",
1019	<	exec.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS));
1017	>	pool.shutdown();
1018	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
1019	>	try {
1020	>	threadFail("ExecutorService " + pool +
1021	>	" did not terminate in a timely manner");
1022	>	} finally {
1023	>	// last resort, for the benefit of subsequent tests
1024	>	pool.shutdownNow();
1025	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
1026	>	}
1027	>	}
1028		} catch (SecurityException ok) {
1029		// Allowed in case test doesn't have privs
1030	<	} catch (InterruptedException ie) {
1031	<	fail("Unexpected InterruptedException");
1030	>	} catch (InterruptedException fail) {
1031	>	threadFail("Unexpected InterruptedException");
1032		}
1033		}
1034
1035		/**
1036	<	* Checks that thread does not terminate within the default
1037	<	* millisecond delay of {@code timeoutMillis()}.
1036	>	* Like Runnable, but with the freedom to throw anything.
1037	>	* junit folks had the same idea:
1038	>	* http://junit.org/junit5/docs/snapshot/api/org/junit/gen5/api/Executable.html
1039		*/
1040	<	void assertThreadStaysAlive(Thread thread) {
517	<	assertThreadStaysAlive(thread, timeoutMillis());
518	<	}
1040	>	interface Action { public void run() throws Throwable; }
1041
1042		/**
1043	<	* Checks that thread does not terminate within the given millisecond delay.
1043	>	* Runs all the given actions in parallel, failing if any fail.
1044	>	* Useful for running multiple variants of tests that are
1045	>	* necessarily individually slow because they must block.
1046		*/
1047	<	void assertThreadStaysAlive(Thread thread, long millis) {
1048	<	try {
1049	<	// No need to optimize the failing case via Thread.join.
1050	<	delay(millis);
1051	<	assertTrue(thread.isAlive());
1052	<	} catch (InterruptedException ie) {
1053	<	fail("Unexpected InterruptedException");
1047	>	void testInParallel(Action ... actions) {
1048	>	ExecutorService pool = Executors.newCachedThreadPool();
1049	>	try (PoolCleaner cleaner = cleaner(pool)) {
1050	>	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
1051	>	for (final Action action : actions)
1052	>	futures.add(pool.submit(new CheckedRunnable() {
1053	>	public void realRun() throws Throwable { action.run();}}));
1054	>	for (Future<?> future : futures)
1055	>	try {
1056	>	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
1057	>	} catch (ExecutionException ex) {
1058	>	threadUnexpectedException(ex.getCause());
1059	>	} catch (Exception ex) {
1060	>	threadUnexpectedException(ex);
1061	>	}
1062		}
1063		}
1064
1065		/**
1066	<	* Checks that the threads do not terminate within the default
1067	<	* millisecond delay of {@code timeoutMillis()}.
1066	>	* A debugging tool to print stack traces of most threads, as jstack does.
1067	>	* Uninteresting threads are filtered out.
1068		*/
1069	<	void assertThreadsStayAlive(Thread... threads) {
1070	<	assertThreadsStayAlive(timeoutMillis(), threads);
1069	>	static void dumpTestThreads() {
1070	>	SecurityManager sm = System.getSecurityManager();
1071	>	if (sm != null) {
1072	>	try {
1073	>	System.setSecurityManager(null);
1074	>	} catch (SecurityException giveUp) {
1075	>	return;
1076	>	}
1077	>	}
1078	>
1079	>	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
1080	>	System.err.println("------ stacktrace dump start ------");
1081	>	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
1082	>	final String name = info.getThreadName();
1083	>	String lockName;
1084	>	if ("Signal Dispatcher".equals(name))
1085	>	continue;
1086	>	if ("Reference Handler".equals(name)
1087	>	&& (lockName = info.getLockName()) != null
1088	>	&& lockName.startsWith("java.lang.ref.Reference$Lock"))
1089	>	continue;
1090	>	if ("Finalizer".equals(name)
1091	>	&& (lockName = info.getLockName()) != null
1092	>	&& lockName.startsWith("java.lang.ref.ReferenceQueue$Lock"))
1093	>	continue;
1094	>	if ("checkForWedgedTest".equals(name))
1095	>	continue;
1096	>	System.err.print(info);
1097	>	}
1098	>	System.err.println("------ stacktrace dump end ------");
1099	>
1100	>	if (sm != null) System.setSecurityManager(sm);
1101		}
1102
1103		/**
1104	<	* Checks that the threads do not terminate within the given millisecond delay.
1105	<	*/
1106	<	void assertThreadsStayAlive(long millis, Thread... threads) {
1107	<	try {
1108	<	// No need to optimize the failing case via Thread.join.
1109	<	delay(millis);
1110	<	for (Thread thread : threads)
1111	<	assertTrue(thread.isAlive());
1112	<	} catch (InterruptedException ie) {
1113	<	fail("Unexpected InterruptedException");
1104	>	* Checks that thread eventually enters the expected blocked thread state.
1105	>	*/
1106	>	void assertThreadBlocks(Thread thread, Thread.State expected) {
1107	>	// always sleep at least 1 ms, with high probability avoiding
1108	>	// transitory states
1109	>	for (long retries = LONG_DELAY_MS * 3 / 4; retries-->0; ) {
1110	>	try { delay(1); }
1111	>	catch (InterruptedException fail) {
1112	>	throw new AssertionError("Unexpected InterruptedException", fail);
1113	>	}
1114	>	Thread.State s = thread.getState();
1115	>	if (s == expected)
1116	>	return;
1117	>	else if (s == Thread.State.TERMINATED)
1118	>	fail("Unexpected thread termination");
1119		}
1120	+	fail("timed out waiting for thread to enter thread state " + expected);
1121		}
1122
1123		/**
#	Line 569 | Line 1137 | public class JSR166TestCase extends Test
1137		future.get(timeoutMillis, MILLISECONDS);
1138		shouldThrow();
1139		} catch (TimeoutException success) {
1140	<	} catch (Exception e) {
1141	<	threadUnexpectedException(e);
1140	>	} catch (Exception fail) {
1141	>	threadUnexpectedException(fail);
1142		} finally { future.cancel(true); }
1143		assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
1144		}
#	Line 590 | Line 1158 | public class JSR166TestCase extends Test
1158		}
1159
1160		/**
1161	+	* The maximum number of consecutive spurious wakeups we should
1162	+	* tolerate (from APIs like LockSupport.park) before failing a test.
1163	+	*/
1164	+	static final int MAX_SPURIOUS_WAKEUPS = 10;
1165	+
1166	+	/**
1167		* The number of elements to place in collections, arrays, etc.
1168		*/
1169		public static final int SIZE = 20;
#	Line 614 | Line 1188 | public class JSR166TestCase extends Test
1188		public static final Integer m6  = new Integer(-6);
1189		public static final Integer m10 = new Integer(-10);
1190
617	–
1191		/**
1192		* Runs Runnable r with a security policy that permits precisely
1193		* the specified permissions.  If there is no current security
#	Line 694 | Line 1267 | public class JSR166TestCase extends Test
1267		}
1268		public void refresh() {}
1269		public String toString() {
1270	<	List<Permission> ps = new ArrayList<Permission>();
1270	>	List<Permission> ps = new ArrayList<>();
1271		for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1272		ps.add(e.nextElement());
1273		return "AdjustablePolicy with permissions " + ps;
#	Line 722 | Line 1295 | public class JSR166TestCase extends Test
1295
1296		/**
1297		* Sleeps until the given time has elapsed.
1298	<	* Throws AssertionFailedError if interrupted.
1298	>	* Throws AssertionError if interrupted.
1299		*/
1300	<	void sleep(long millis) {
1300	>	static void sleep(long millis) {
1301		try {
1302		delay(millis);
1303	<	} catch (InterruptedException ie) {
1304	<	AssertionFailedError afe =
732	<	new AssertionFailedError("Unexpected InterruptedException");
733	<	afe.initCause(ie);
734	<	throw afe;
1303	>	} catch (InterruptedException fail) {
1304	>	throw new AssertionError("Unexpected InterruptedException", fail);
1305		}
1306		}
1307
1308		/**
1309		* Spin-waits up to the specified number of milliseconds for the given
1310		* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1311	+	* @param waitingForGodot if non-null, an additional condition to satisfy
1312		*/
1313	<	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1314	<	long startTime = System.nanoTime();
1315	<	for (;;) {
1316	<	Thread.State s = thread.getState();
1317	<	if (s == Thread.State.BLOCKED ||
1318	<	s == Thread.State.WAITING ||
1319	<	s == Thread.State.TIMED_WAITING)
1320	<	return;
1321	<	else if (s == Thread.State.TERMINATED)
1313	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis,
1314	>	Callable<Boolean> waitingForGodot) {
1315	>	for (long startTime = 0L;;) {
1316	>	switch (thread.getState()) {
1317	>	default: break;
1318	>	case BLOCKED: case WAITING: case TIMED_WAITING:
1319	>	try {
1320	>	if (waitingForGodot == null || waitingForGodot.call())
1321	>	return;
1322	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1323	>	break;
1324	>	case TERMINATED:
1325		fail("Unexpected thread termination");
1326	+	}
1327	+
1328	+	if (startTime == 0L)
1329	+	startTime = System.nanoTime();
1330		else if (millisElapsedSince(startTime) > timeoutMillis) {
1331	<	threadAssertTrue(thread.isAlive());
1332	<	return;
1331	>	assertTrue(thread.isAlive());
1332	>	if (waitingForGodot == null
1333	>	|| thread.getState() == Thread.State.RUNNABLE)
1334	>	fail("timed out waiting for thread to enter wait state");
1335	>	else
1336	>	fail("timed out waiting for condition, thread state="
1337	>	+ thread.getState());
1338		}
1339		Thread.yield();
1340		}
1341		}
1342
1343		/**
1344	<	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
1345	<	* state: BLOCKED, WAITING, or TIMED_WAITING.
1344	>	* Spin-waits up to the specified number of milliseconds for the given
1345	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1346	>	*/
1347	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1348	>	waitForThreadToEnterWaitState(thread, timeoutMillis, null);
1349	>	}
1350	>
1351	>	/**
1352	>	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1353	>	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1354		*/
1355		void waitForThreadToEnterWaitState(Thread thread) {
1356	<	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
1356	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS, null);
1357	>	}
1358	>
1359	>	/**
1360	>	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1361	>	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING,
1362	>	* and additionally satisfy the given condition.
1363	>	*/
1364	>	void waitForThreadToEnterWaitState(Thread thread,
1365	>	Callable<Boolean> waitingForGodot) {
1366	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS, waitingForGodot);
1367		}
1368
1369		/**
1370		* Returns the number of milliseconds since time given by
1371		* startNanoTime, which must have been previously returned from a
1372	<	* call to {@link System.nanoTime()}.
1372	>	* call to {@link System#nanoTime()}.
1373		*/
1374	<	long millisElapsedSince(long startNanoTime) {
1374	>	static long millisElapsedSince(long startNanoTime) {
1375		return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1376		}
1377
1378	+	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1379	+	//         long startTime = System.nanoTime();
1380	+	//         try {
1381	+	//             r.run();
1382	+	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1383	+	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1384	+	//             throw new AssertionError("did not return promptly");
1385	+	//     }
1386	+
1387	+	//     void assertTerminatesPromptly(Runnable r) {
1388	+	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1389	+	//     }
1390	+
1391	+	/**
1392	+	* Checks that timed f.get() returns the expected value, and does not
1393	+	* wait for the timeout to elapse before returning.
1394	+	*/
1395	+	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1396	+	long startTime = System.nanoTime();
1397	+	T actual = null;
1398	+	try {
1399	+	actual = f.get(timeoutMillis, MILLISECONDS);
1400	+	} catch (Throwable fail) { threadUnexpectedException(fail); }
1401	+	assertEquals(expectedValue, actual);
1402	+	if (millisElapsedSince(startTime) > timeoutMillis/2)
1403	+	throw new AssertionError("timed get did not return promptly");
1404	+	}
1405	+
1406	+	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1407	+	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1408	+	}
1409	+
1410		/**
1411		* Returns a new started daemon Thread running the given runnable.
1412		*/
#	Line 792 | Line 1425 | public class JSR166TestCase extends Test
1425		void awaitTermination(Thread t, long timeoutMillis) {
1426		try {
1427		t.join(timeoutMillis);
1428	<	} catch (InterruptedException ie) {
1429	<	threadUnexpectedException(ie);
1428	>	} catch (InterruptedException fail) {
1429	>	threadUnexpectedException(fail);
1430		} finally {
1431		if (t.getState() != Thread.State.TERMINATED) {
1432		t.interrupt();
1433	<	fail("Test timed out");
1433	>	threadFail("timed out waiting for thread to terminate");
1434		}
1435		}
1436		}
#	Line 819 | Line 1452 | public class JSR166TestCase extends Test
1452		public final void run() {
1453		try {
1454		realRun();
1455	<	} catch (Throwable t) {
1456	<	threadUnexpectedException(t);
824	<	}
825	<	}
826	<	}
827	<
828	<	public abstract class RunnableShouldThrow implements Runnable {
829	<	protected abstract void realRun() throws Throwable;
830	<
831	<	final Class<?> exceptionClass;
832	<
833	<	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
834	<	this.exceptionClass = exceptionClass;
835	<	}
836	<
837	<	public final void run() {
838	<	try {
839	<	realRun();
840	<	threadShouldThrow(exceptionClass.getSimpleName());
841	<	} catch (Throwable t) {
842	<	if (! exceptionClass.isInstance(t))
843	<	threadUnexpectedException(t);
1455	>	} catch (Throwable fail) {
1456	>	threadUnexpectedException(fail);
1457		}
1458		}
1459		}
#	Line 857 | Line 1470 | public class JSR166TestCase extends Test
1470		public final void run() {
1471		try {
1472		realRun();
860	–	threadShouldThrow(exceptionClass.getSimpleName());
1473		} catch (Throwable t) {
1474		if (! exceptionClass.isInstance(t))
1475		threadUnexpectedException(t);
1476	+	return;
1477		}
1478	+	threadShouldThrow(exceptionClass.getSimpleName());
1479		}
1480		}
1481
#	Line 871 | Line 1485 | public class JSR166TestCase extends Test
1485		public final void run() {
1486		try {
1487		realRun();
874	–	threadShouldThrow("InterruptedException");
1488		} catch (InterruptedException success) {
1489		threadAssertFalse(Thread.interrupted());
1490	<	} catch (Throwable t) {
1491	<	threadUnexpectedException(t);
1490	>	return;
1491	>	} catch (Throwable fail) {
1492	>	threadUnexpectedException(fail);
1493		}
1494	+	threadShouldThrow("InterruptedException");
1495		}
1496		}
1497
#	Line 886 | Line 1501 | public class JSR166TestCase extends Test
1501		public final T call() {
1502		try {
1503		return realCall();
1504	<	} catch (Throwable t) {
1505	<	threadUnexpectedException(t);
891	<	return null;
1504	>	} catch (Throwable fail) {
1505	>	threadUnexpectedException(fail);
1506		}
1507	<	}
894	<	}
895	<
896	<	public abstract class CheckedInterruptedCallable<T>
897	<	implements Callable<T> {
898	<	protected abstract T realCall() throws Throwable;
899	<
900	<	public final T call() {
901	<	try {
902	<	T result = realCall();
903	<	threadShouldThrow("InterruptedException");
904	<	return result;
905	<	} catch (InterruptedException success) {
906	<	threadAssertFalse(Thread.interrupted());
907	<	} catch (Throwable t) {
908	<	threadUnexpectedException(t);
909	<	}
910	<	return null;
1507	>	throw new AssertionError("unreached");
1508		}
1509		}
1510
#	Line 922 | Line 1519 | public class JSR166TestCase extends Test
1519		public static final String TEST_STRING = "a test string";
1520
1521		public static class StringTask implements Callable<String> {
1522	<	public String call() { return TEST_STRING; }
1522	>	final String value;
1523	>	public StringTask() { this(TEST_STRING); }
1524	>	public StringTask(String value) { this.value = value; }
1525	>	public String call() { return value; }
1526		}
1527
1528		public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
#	Line 935 | Line 1535 | public class JSR166TestCase extends Test
1535		}};
1536		}
1537
1538	<	public Runnable awaiter(final CountDownLatch latch) {
1538	>	public Runnable countDowner(final CountDownLatch latch) {
1539		return new CheckedRunnable() {
1540		public void realRun() throws InterruptedException {
1541	<	await(latch);
1541	>	latch.countDown();
1542		}};
1543		}
1544
1545	+	class LatchAwaiter extends CheckedRunnable {
1546	+	static final int NEW = 0;
1547	+	static final int RUNNING = 1;
1548	+	static final int DONE = 2;
1549	+	final CountDownLatch latch;
1550	+	int state = NEW;
1551	+	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1552	+	public void realRun() throws InterruptedException {
1553	+	state = 1;
1554	+	await(latch);
1555	+	state = 2;
1556	+	}
1557	+	}
1558	+
1559	+	public LatchAwaiter awaiter(CountDownLatch latch) {
1560	+	return new LatchAwaiter(latch);
1561	+	}
1562	+
1563	+	public void await(CountDownLatch latch, long timeoutMillis) {
1564	+	boolean timedOut = false;
1565	+	try {
1566	+	timedOut = !latch.await(timeoutMillis, MILLISECONDS);
1567	+	} catch (Throwable fail) {
1568	+	threadUnexpectedException(fail);
1569	+	}
1570	+	if (timedOut)
1571	+	fail("timed out waiting for CountDownLatch for "
1572	+	+ (timeoutMillis/1000) + " sec");
1573	+	}
1574	+
1575		public void await(CountDownLatch latch) {
1576	+	await(latch, LONG_DELAY_MS);
1577	+	}
1578	+
1579	+	public void await(Semaphore semaphore) {
1580	+	boolean timedOut = false;
1581		try {
1582	<	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1583	<	} catch (Throwable t) {
1584	<	threadUnexpectedException(t);
1582	>	timedOut = !semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS);
1583	>	} catch (Throwable fail) {
1584	>	threadUnexpectedException(fail);
1585		}
1586	+	if (timedOut)
1587	+	fail("timed out waiting for Semaphore for "
1588	+	+ (LONG_DELAY_MS/1000) + " sec");
1589		}
1590
1591	<	public void await(Semaphore semaphore) {
1591	>	public void await(CyclicBarrier barrier) {
1592		try {
1593	<	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1594	<	} catch (Throwable t) {
1595	<	threadUnexpectedException(t);
1593	>	barrier.await(LONG_DELAY_MS, MILLISECONDS);
1594	>	} catch (Throwable fail) {
1595	>	threadUnexpectedException(fail);
1596		}
1597		}
1598
#	Line 972 | Line 1610 | public class JSR166TestCase extends Test
1610		//         long startTime = System.nanoTime();
1611		//         while (!flag.get()) {
1612		//             if (millisElapsedSince(startTime) > timeoutMillis)
1613	<	//                 throw new AssertionFailedError("timed out");
1613	>	//                 throw new AssertionError("timed out");
1614		//             Thread.yield();
1615		//         }
1616		//     }
#	Line 981 | Line 1619 | public class JSR166TestCase extends Test
1619		public String call() { throw new NullPointerException(); }
1620		}
1621
984	–	public static class CallableOne implements Callable<Integer> {
985	–	public Integer call() { return one; }
986	–	}
987	–
988	–	public class ShortRunnable extends CheckedRunnable {
989	–	protected void realRun() throws Throwable {
990	–	delay(SHORT_DELAY_MS);
991	–	}
992	–	}
993	–
994	–	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
995	–	protected void realRun() throws InterruptedException {
996	–	delay(SHORT_DELAY_MS);
997	–	}
998	–	}
999	–
1000	–	public class SmallRunnable extends CheckedRunnable {
1001	–	protected void realRun() throws Throwable {
1002	–	delay(SMALL_DELAY_MS);
1003	–	}
1004	–	}
1005	–
1006	–	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1007	–	protected void realRun() {
1008	–	try {
1009	–	delay(SMALL_DELAY_MS);
1010	–	} catch (InterruptedException ok) {}
1011	–	}
1012	–	}
1013	–
1014	–	public class SmallCallable extends CheckedCallable {
1015	–	protected Object realCall() throws InterruptedException {
1016	–	delay(SMALL_DELAY_MS);
1017	–	return Boolean.TRUE;
1018	–	}
1019	–	}
1020	–
1021	–	public class MediumRunnable extends CheckedRunnable {
1022	–	protected void realRun() throws Throwable {
1023	–	delay(MEDIUM_DELAY_MS);
1024	–	}
1025	–	}
1026	–
1027	–	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1028	–	protected void realRun() throws InterruptedException {
1029	–	delay(MEDIUM_DELAY_MS);
1030	–	}
1031	–	}
1032	–
1622		public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1623		return new CheckedRunnable() {
1624		protected void realRun() {
#	Line 1039 | Line 1628 | public class JSR166TestCase extends Test
1628		}};
1629		}
1630
1042	–	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1043	–	protected void realRun() {
1044	–	try {
1045	–	delay(MEDIUM_DELAY_MS);
1046	–	} catch (InterruptedException ok) {}
1047	–	}
1048	–	}
1049	–
1050	–	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1051	–	protected void realRun() {
1052	–	try {
1053	–	delay(LONG_DELAY_MS);
1054	–	} catch (InterruptedException ok) {}
1055	–	}
1056	–	}
1057	–
1631		/**
1632		* For use as ThreadFactory in constructors
1633		*/
#	Line 1068 | Line 1641 | public class JSR166TestCase extends Test
1641		boolean isDone();
1642		}
1643
1071	–	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1072	–	return new TrackedRunnable() {
1073	–	private volatile boolean done = false;
1074	–	public boolean isDone() { return done; }
1075	–	public void run() {
1076	–	try {
1077	–	delay(timeoutMillis);
1078	–	done = true;
1079	–	} catch (InterruptedException ok) {}
1080	–	}
1081	–	};
1082	–	}
1083	–
1084	–	public static class TrackedShortRunnable implements Runnable {
1085	–	public volatile boolean done = false;
1086	–	public void run() {
1087	–	try {
1088	–	delay(SHORT_DELAY_MS);
1089	–	done = true;
1090	–	} catch (InterruptedException ok) {}
1091	–	}
1092	–	}
1093	–
1094	–	public static class TrackedSmallRunnable implements Runnable {
1095	–	public volatile boolean done = false;
1096	–	public void run() {
1097	–	try {
1098	–	delay(SMALL_DELAY_MS);
1099	–	done = true;
1100	–	} catch (InterruptedException ok) {}
1101	–	}
1102	–	}
1103	–
1104	–	public static class TrackedMediumRunnable implements Runnable {
1105	–	public volatile boolean done = false;
1106	–	public void run() {
1107	–	try {
1108	–	delay(MEDIUM_DELAY_MS);
1109	–	done = true;
1110	–	} catch (InterruptedException ok) {}
1111	–	}
1112	–	}
1113	–
1114	–	public static class TrackedLongRunnable implements Runnable {
1115	–	public volatile boolean done = false;
1116	–	public void run() {
1117	–	try {
1118	–	delay(LONG_DELAY_MS);
1119	–	done = true;
1120	–	} catch (InterruptedException ok) {}
1121	–	}
1122	–	}
1123	–
1644		public static class TrackedNoOpRunnable implements Runnable {
1645		public volatile boolean done = false;
1646		public void run() {
#	Line 1128 | Line 1648 | public class JSR166TestCase extends Test
1648		}
1649		}
1650
1131	–	public static class TrackedCallable implements Callable {
1132	–	public volatile boolean done = false;
1133	–	public Object call() {
1134	–	try {
1135	–	delay(SMALL_DELAY_MS);
1136	–	done = true;
1137	–	} catch (InterruptedException ok) {}
1138	–	return Boolean.TRUE;
1139	–	}
1140	–	}
1141	–
1651		/**
1652		* Analog of CheckedRunnable for RecursiveAction
1653		*/
1654		public abstract class CheckedRecursiveAction extends RecursiveAction {
1655		protected abstract void realCompute() throws Throwable;
1656
1657	<	public final void compute() {
1657	>	@Override protected final void compute() {
1658		try {
1659		realCompute();
1660	<	} catch (Throwable t) {
1661	<	threadUnexpectedException(t);
1660	>	} catch (Throwable fail) {
1661	>	threadUnexpectedException(fail);
1662		}
1663		}
1664		}
#	Line 1160 | Line 1669 | public class JSR166TestCase extends Test
1669		public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1670		protected abstract T realCompute() throws Throwable;
1671
1672	<	public final T compute() {
1672	>	@Override protected final T compute() {
1673		try {
1674		return realCompute();
1675	<	} catch (Throwable t) {
1676	<	threadUnexpectedException(t);
1168	<	return null;
1675	>	} catch (Throwable fail) {
1676	>	threadUnexpectedException(fail);
1677		}
1678	+	throw new AssertionError("unreached");
1679		}
1680		}
1681
#	Line 1180 | Line 1689 | public class JSR166TestCase extends Test
1689
1690		/**
1691		* A CyclicBarrier that uses timed await and fails with
1692	<	* AssertionFailedErrors instead of throwing checked exceptions.
1692	>	* AssertionErrors instead of throwing checked exceptions.
1693		*/
1694	<	public class CheckedBarrier extends CyclicBarrier {
1694	>	public static class CheckedBarrier extends CyclicBarrier {
1695		public CheckedBarrier(int parties) { super(parties); }
1696
1697		public int await() {
1698		try {
1699		return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1700	<	} catch (TimeoutException e) {
1701	<	throw new AssertionFailedError("timed out");
1702	<	} catch (Exception e) {
1703	<	AssertionFailedError afe =
1195	<	new AssertionFailedError("Unexpected exception: " + e);
1196	<	afe.initCause(e);
1197	<	throw afe;
1700	>	} catch (TimeoutException timedOut) {
1701	>	throw new AssertionError("timed out");
1702	>	} catch (Exception fail) {
1703	>	throw new AssertionError("Unexpected exception: " + fail, fail);
1704		}
1705		}
1706		}
#	Line 1205 | Line 1711 | public class JSR166TestCase extends Test
1711		assertEquals(0, q.size());
1712		assertNull(q.peek());
1713		assertNull(q.poll());
1714	<	assertNull(q.poll(0, MILLISECONDS));
1714	>	assertNull(q.poll(randomExpiredTimeout(), randomTimeUnit()));
1715		assertEquals(q.toString(), "[]");
1716		assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1717		assertFalse(q.iterator().hasNext());
#	Line 1221 | Line 1727 | public class JSR166TestCase extends Test
1727		q.remove();
1728		shouldThrow();
1729		} catch (NoSuchElementException success) {}
1730	<	} catch (InterruptedException ie) {
1225	<	threadUnexpectedException(ie);
1226	<	}
1730	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1731		}
1732
1733		void assertSerialEquals(Object x, Object y) {
#	Line 1242 | Line 1746 | public class JSR166TestCase extends Test
1746		oos.flush();
1747		oos.close();
1748		return bos.toByteArray();
1749	<	} catch (Throwable t) {
1750	<	threadUnexpectedException(t);
1749	>	} catch (Throwable fail) {
1750	>	threadUnexpectedException(fail);
1751		return new byte[0];
1752		}
1753		}
1754
1755	+	void assertImmutable(Object o) {
1756	+	if (o instanceof Collection) {
1757	+	assertThrows(
1758	+	UnsupportedOperationException.class,
1759	+	() -> ((Collection) o).add(null));
1760	+	}
1761	+	}
1762	+
1763		@SuppressWarnings("unchecked")
1764		<T> T serialClone(T o) {
1765	+	T clone = null;
1766		try {
1767		ObjectInputStream ois = new ObjectInputStream
1768		(new ByteArrayInputStream(serialBytes(o)));
1769	<	T clone = (T) ois.readObject();
1770	<	assertSame(o.getClass(), clone.getClass());
1771	<	return clone;
1772	<	} catch (Throwable t) {
1773	<	threadUnexpectedException(t);
1769	>	clone = (T) ois.readObject();
1770	>	} catch (Throwable fail) {
1771	>	threadUnexpectedException(fail);
1772	>	}
1773	>	if (o == clone) assertImmutable(o);
1774	>	else assertSame(o.getClass(), clone.getClass());
1775	>	return clone;
1776	>	}
1777	>
1778	>	/**
1779	>	* A version of serialClone that leaves error handling (for
1780	>	* e.g. NotSerializableException) up to the caller.
1781	>	*/
1782	>	@SuppressWarnings("unchecked")
1783	>	<T> T serialClonePossiblyFailing(T o)
1784	>	throws ReflectiveOperationException, java.io.IOException {
1785	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1786	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1787	>	oos.writeObject(o);
1788	>	oos.flush();
1789	>	oos.close();
1790	>	ObjectInputStream ois = new ObjectInputStream
1791	>	(new ByteArrayInputStream(bos.toByteArray()));
1792	>	T clone = (T) ois.readObject();
1793	>	if (o == clone) assertImmutable(o);
1794	>	else assertSame(o.getClass(), clone.getClass());
1795	>	return clone;
1796	>	}
1797	>
1798	>	/**
1799	>	* If o implements Cloneable and has a public clone method,
1800	>	* returns a clone of o, else null.
1801	>	*/
1802	>	@SuppressWarnings("unchecked")
1803	>	<T> T cloneableClone(T o) {
1804	>	if (!(o instanceof Cloneable)) return null;
1805	>	final T clone;
1806	>	try {
1807	>	clone = (T) o.getClass().getMethod("clone").invoke(o);
1808	>	} catch (NoSuchMethodException ok) {
1809		return null;
1810	+	} catch (ReflectiveOperationException unexpected) {
1811	+	throw new Error(unexpected);
1812	+	}
1813	+	assertNotSame(o, clone); // not 100% guaranteed by spec
1814	+	assertSame(o.getClass(), clone.getClass());
1815	+	return clone;
1816	+	}
1817	+
1818	+	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1819	+	Action... throwingActions) {
1820	+	for (Action throwingAction : throwingActions) {
1821	+	boolean threw = false;
1822	+	try { throwingAction.run(); }
1823	+	catch (Throwable t) {
1824	+	threw = true;
1825	+	if (!expectedExceptionClass.isInstance(t))
1826	+	throw new AssertionError(
1827	+	"Expected " + expectedExceptionClass.getName() +
1828	+	", got " + t.getClass().getName(),
1829	+	t);
1830	+	}
1831	+	if (!threw)
1832	+	shouldThrow(expectedExceptionClass.getName());
1833	+	}
1834	+	}
1835	+
1836	+	public void assertIteratorExhausted(Iterator<?> it) {
1837	+	try {
1838	+	it.next();
1839	+	shouldThrow();
1840	+	} catch (NoSuchElementException success) {}
1841	+	assertFalse(it.hasNext());
1842	+	}
1843	+
1844	+	public <T> Callable<T> callableThrowing(final Exception ex) {
1845	+	return new Callable<T>() { public T call() throws Exception { throw ex; }};
1846	+	}
1847	+
1848	+	public Runnable runnableThrowing(final RuntimeException ex) {
1849	+	return new Runnable() { public void run() { throw ex; }};
1850	+	}
1851	+
1852	+	/** A reusable thread pool to be shared by tests. */
1853	+	static final ExecutorService cachedThreadPool =
1854	+	new ThreadPoolExecutor(0, Integer.MAX_VALUE,
1855	+	1000L, MILLISECONDS,
1856	+	new SynchronousQueue<Runnable>());
1857	+
1858	+	static <T> void shuffle(T[] array) {
1859	+	Collections.shuffle(Arrays.asList(array), ThreadLocalRandom.current());
1860	+	}
1861	+
1862	+	/**
1863	+	* Returns the same String as would be returned by {@link
1864	+	* Object#toString}, whether or not the given object's class
1865	+	* overrides toString().
1866	+	*
1867	+	* @see System#identityHashCode
1868	+	*/
1869	+	static String identityString(Object x) {
1870	+	return x.getClass().getName()
1871	+	+ "@" + Integer.toHexString(System.identityHashCode(x));
1872	+	}
1873	+
1874	+	// --- Shared assertions for Executor tests ---
1875	+
1876	+	/**
1877	+	* Returns maximum number of tasks that can be submitted to given
1878	+	* pool (with bounded queue) before saturation (when submission
1879	+	* throws RejectedExecutionException).
1880	+	*/
1881	+	static final int saturatedSize(ThreadPoolExecutor pool) {
1882	+	BlockingQueue<Runnable> q = pool.getQueue();
1883	+	return pool.getMaximumPoolSize() + q.size() + q.remainingCapacity();
1884	+	}
1885	+
1886	+	@SuppressWarnings("FutureReturnValueIgnored")
1887	+	void assertNullTaskSubmissionThrowsNullPointerException(Executor e) {
1888	+	try {
1889	+	e.execute((Runnable) null);
1890	+	shouldThrow();
1891	+	} catch (NullPointerException success) {}
1892	+
1893	+	if (! (e instanceof ExecutorService)) return;
1894	+	ExecutorService es = (ExecutorService) e;
1895	+	try {
1896	+	es.submit((Runnable) null);
1897	+	shouldThrow();
1898	+	} catch (NullPointerException success) {}
1899	+	try {
1900	+	es.submit((Runnable) null, Boolean.TRUE);
1901	+	shouldThrow();
1902	+	} catch (NullPointerException success) {}
1903	+	try {
1904	+	es.submit((Callable) null);
1905	+	shouldThrow();
1906	+	} catch (NullPointerException success) {}
1907	+
1908	+	if (! (e instanceof ScheduledExecutorService)) return;
1909	+	ScheduledExecutorService ses = (ScheduledExecutorService) e;
1910	+	try {
1911	+	ses.schedule((Runnable) null,
1912	+	randomTimeout(), randomTimeUnit());
1913	+	shouldThrow();
1914	+	} catch (NullPointerException success) {}
1915	+	try {
1916	+	ses.schedule((Callable) null,
1917	+	randomTimeout(), randomTimeUnit());
1918	+	shouldThrow();
1919	+	} catch (NullPointerException success) {}
1920	+	try {
1921	+	ses.scheduleAtFixedRate((Runnable) null,
1922	+	randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
1923	+	shouldThrow();
1924	+	} catch (NullPointerException success) {}
1925	+	try {
1926	+	ses.scheduleWithFixedDelay((Runnable) null,
1927	+	randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
1928	+	shouldThrow();
1929	+	} catch (NullPointerException success) {}
1930	+	}
1931	+
1932	+	void setRejectedExecutionHandler(
1933	+	ThreadPoolExecutor p, RejectedExecutionHandler handler) {
1934	+	p.setRejectedExecutionHandler(handler);
1935	+	assertSame(handler, p.getRejectedExecutionHandler());
1936	+	}
1937	+
1938	+	void assertTaskSubmissionsAreRejected(ThreadPoolExecutor p) {
1939	+	final RejectedExecutionHandler savedHandler = p.getRejectedExecutionHandler();
1940	+	final long savedTaskCount = p.getTaskCount();
1941	+	final long savedCompletedTaskCount = p.getCompletedTaskCount();
1942	+	final int savedQueueSize = p.getQueue().size();
1943	+	final boolean stock = (p.getClass().getClassLoader() == null);
1944	+
1945	+	Runnable r = () -> {};
1946	+	Callable<Boolean> c = () -> Boolean.TRUE;
1947	+
1948	+	class Recorder implements RejectedExecutionHandler {
1949	+	public volatile Runnable r = null;
1950	+	public volatile ThreadPoolExecutor p = null;
1951	+	public void reset() { r = null; p = null; }
1952	+	public void rejectedExecution(Runnable r, ThreadPoolExecutor p) {
1953	+	assertNull(this.r);
1954	+	assertNull(this.p);
1955	+	this.r = r;
1956	+	this.p = p;
1957	+	}
1958	+	}
1959	+
1960	+	// check custom handler is invoked exactly once per task
1961	+	Recorder recorder = new Recorder();
1962	+	setRejectedExecutionHandler(p, recorder);
1963	+	for (int i = 2; i--> 0; ) {
1964	+	recorder.reset();
1965	+	p.execute(r);
1966	+	if (stock && p.getClass() == ThreadPoolExecutor.class)
1967	+	assertSame(r, recorder.r);
1968	+	assertSame(p, recorder.p);
1969	+
1970	+	recorder.reset();
1971	+	assertFalse(p.submit(r).isDone());
1972	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
1973	+	assertSame(p, recorder.p);
1974	+
1975	+	recorder.reset();
1976	+	assertFalse(p.submit(r, Boolean.TRUE).isDone());
1977	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
1978	+	assertSame(p, recorder.p);
1979	+
1980	+	recorder.reset();
1981	+	assertFalse(p.submit(c).isDone());
1982	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
1983	+	assertSame(p, recorder.p);
1984	+
1985	+	if (p instanceof ScheduledExecutorService) {
1986	+	ScheduledExecutorService s = (ScheduledExecutorService) p;
1987	+	ScheduledFuture<?> future;
1988	+
1989	+	recorder.reset();
1990	+	future = s.schedule(r, randomTimeout(), randomTimeUnit());
1991	+	assertFalse(future.isDone());
1992	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
1993	+	assertSame(p, recorder.p);
1994	+
1995	+	recorder.reset();
1996	+	future = s.schedule(c, randomTimeout(), randomTimeUnit());
1997	+	assertFalse(future.isDone());
1998	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
1999	+	assertSame(p, recorder.p);
2000	+
2001	+	recorder.reset();
2002	+	future = s.scheduleAtFixedRate(r, randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2003	+	assertFalse(future.isDone());
2004	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2005	+	assertSame(p, recorder.p);
2006	+
2007	+	recorder.reset();
2008	+	future = s.scheduleWithFixedDelay(r, randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2009	+	assertFalse(future.isDone());
2010	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2011	+	assertSame(p, recorder.p);
2012	+	}
2013	+	}
2014	+
2015	+	// Checking our custom handler above should be sufficient, but
2016	+	// we add some integration tests of standard handlers.
2017	+	final AtomicReference<Thread> thread = new AtomicReference<>();
2018	+	final Runnable setThread = () -> thread.set(Thread.currentThread());
2019	+
2020	+	setRejectedExecutionHandler(p, new ThreadPoolExecutor.AbortPolicy());
2021	+	try {
2022	+	p.execute(setThread);
2023	+	shouldThrow();
2024	+	} catch (RejectedExecutionException success) {}
2025	+	assertNull(thread.get());
2026	+
2027	+	setRejectedExecutionHandler(p, new ThreadPoolExecutor.DiscardPolicy());
2028	+	p.execute(setThread);
2029	+	assertNull(thread.get());
2030	+
2031	+	setRejectedExecutionHandler(p, new ThreadPoolExecutor.CallerRunsPolicy());
2032	+	p.execute(setThread);
2033	+	if (p.isShutdown())
2034	+	assertNull(thread.get());
2035	+	else
2036	+	assertSame(Thread.currentThread(), thread.get());
2037	+
2038	+	setRejectedExecutionHandler(p, savedHandler);
2039	+
2040	+	// check that pool was not perturbed by handlers
2041	+	assertEquals(savedTaskCount, p.getTaskCount());
2042	+	assertEquals(savedCompletedTaskCount, p.getCompletedTaskCount());
2043	+	assertEquals(savedQueueSize, p.getQueue().size());
2044	+	}
2045	+
2046	+	void assertCollectionsEquals(Collection<?> x, Collection<?> y) {
2047	+	assertEquals(x, y);
2048	+	assertEquals(y, x);
2049	+	assertEquals(x.isEmpty(), y.isEmpty());
2050	+	assertEquals(x.size(), y.size());
2051	+	if (x instanceof List) {
2052	+	assertEquals(x.toString(), y.toString());
2053	+	}
2054	+	if (x instanceof List || x instanceof Set) {
2055	+	assertEquals(x.hashCode(), y.hashCode());
2056	+	}
2057	+	if (x instanceof List || x instanceof Deque) {
2058	+	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
2059	+	assertTrue(Arrays.equals(x.toArray(new Object[0]),
2060	+	y.toArray(new Object[0])));
2061	+	}
2062	+	}
2063	+
2064	+	/**
2065	+	* A weaker form of assertCollectionsEquals which does not insist
2066	+	* that the two collections satisfy Object#equals(Object), since
2067	+	* they may use identity semantics as Deques do.
2068	+	*/
2069	+	void assertCollectionsEquivalent(Collection<?> x, Collection<?> y) {
2070	+	if (x instanceof List || x instanceof Set)
2071	+	assertCollectionsEquals(x, y);
2072	+	else {
2073	+	assertEquals(x.isEmpty(), y.isEmpty());
2074	+	assertEquals(x.size(), y.size());
2075	+	assertEquals(new HashSet(x), new HashSet(y));
2076	+	if (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		}

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