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Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.77 by jsr166, Fri May 6 17:26:29 2011 UTC vs.
Revision 1.252 by jsr166, Thu Jan 10 04:35:16 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.*;
11	<	import java.util.Arrays;
12	<	import java.util.NoSuchElementException;
13	<	import java.util.PropertyPermission;
14	<	import java.util.concurrent.*;
15	<	import java.util.concurrent.atomic.AtomicReference;
10	>	/*
11	>	* @test
12	>	* @summary JSR-166 tck tests, in a number of variations.
13	>	*          The first is the conformance testing variant,
14	>	*          while others also test implementation details.
15	>	* @build *
16	>	* @modules java.management
17	>	* @run junit/othervm/timeout=1000 JSR166TestCase
18	>	* @run junit/othervm/timeout=1000
19	>	*      --add-opens java.base/java.util.concurrent=ALL-UNNAMED
20	>	*      --add-opens java.base/java.lang=ALL-UNNAMED
21	>	*      -Djsr166.testImplementationDetails=true
22	>	*      JSR166TestCase
23	>	* @run junit/othervm/timeout=1000
24	>	*      --add-opens java.base/java.util.concurrent=ALL-UNNAMED
25	>	*      --add-opens java.base/java.lang=ALL-UNNAMED
26	>	*      -Djsr166.testImplementationDetails=true
27	>	*      -Djava.util.concurrent.ForkJoinPool.common.parallelism=0
28	>	*      JSR166TestCase
29	>	* @run junit/othervm/timeout=1000
30	>	*      --add-opens java.base/java.util.concurrent=ALL-UNNAMED
31	>	*      --add-opens java.base/java.lang=ALL-UNNAMED
32	>	*      -Djsr166.testImplementationDetails=true
33	>	*      -Djava.util.concurrent.ForkJoinPool.common.parallelism=1
34	>	*      -Djava.util.secureRandomSeed=true
35	>	*      JSR166TestCase
36	>	* @run junit/othervm/timeout=1000/policy=tck.policy
37	>	*      --add-opens java.base/java.util.concurrent=ALL-UNNAMED
38	>	*      --add-opens java.base/java.lang=ALL-UNNAMED
39	>	*      -Djsr166.testImplementationDetails=true
40	>	*      JSR166TestCase
41	>	*/
42	>
43		import static java.util.concurrent.TimeUnit.MILLISECONDS;
44	+	import static java.util.concurrent.TimeUnit.MINUTES;
45		import static java.util.concurrent.TimeUnit.NANOSECONDS;
46	+
47	+	import java.io.ByteArrayInputStream;
48	+	import java.io.ByteArrayOutputStream;
49	+	import java.io.ObjectInputStream;
50	+	import java.io.ObjectOutputStream;
51	+	import java.lang.management.ManagementFactory;
52	+	import java.lang.management.ThreadInfo;
53	+	import java.lang.management.ThreadMXBean;
54	+	import java.lang.reflect.Constructor;
55	+	import java.lang.reflect.Method;
56	+	import java.lang.reflect.Modifier;
57		import java.security.CodeSource;
58		import java.security.Permission;
59		import java.security.PermissionCollection;
#	Line 21 | Line 61 | import java.security.Permissions;
61		import java.security.Policy;
62		import java.security.ProtectionDomain;
63		import java.security.SecurityPermission;
64	+	import java.util.ArrayList;
65	+	import java.util.Arrays;
66	+	import java.util.Collection;
67	+	import java.util.Collections;
68	+	import java.util.Date;
69	+	import java.util.Deque;
70	+	import java.util.Enumeration;
71	+	import java.util.HashSet;
72	+	import java.util.Iterator;
73	+	import java.util.List;
74	+	import java.util.NoSuchElementException;
75	+	import java.util.PropertyPermission;
76	+	import java.util.Set;
77	+	import java.util.concurrent.BlockingQueue;
78	+	import java.util.concurrent.Callable;
79	+	import java.util.concurrent.CountDownLatch;
80	+	import java.util.concurrent.CyclicBarrier;
81	+	import java.util.concurrent.ExecutionException;
82	+	import java.util.concurrent.Executor;
83	+	import java.util.concurrent.Executors;
84	+	import java.util.concurrent.ExecutorService;
85	+	import java.util.concurrent.ForkJoinPool;
86	+	import java.util.concurrent.Future;
87	+	import java.util.concurrent.FutureTask;
88	+	import java.util.concurrent.RecursiveAction;
89	+	import java.util.concurrent.RecursiveTask;
90	+	import java.util.concurrent.RejectedExecutionException;
91	+	import java.util.concurrent.RejectedExecutionHandler;
92	+	import java.util.concurrent.Semaphore;
93	+	import java.util.concurrent.ScheduledExecutorService;
94	+	import java.util.concurrent.ScheduledFuture;
95	+	import java.util.concurrent.SynchronousQueue;
96	+	import java.util.concurrent.ThreadFactory;
97	+	import java.util.concurrent.ThreadLocalRandom;
98	+	import java.util.concurrent.ThreadPoolExecutor;
99	+	import java.util.concurrent.TimeUnit;
100	+	import java.util.concurrent.TimeoutException;
101	+	import java.util.concurrent.atomic.AtomicBoolean;
102	+	import java.util.concurrent.atomic.AtomicReference;
103	+	import java.util.regex.Pattern;
104	+
105	+	import junit.framework.Test;
106	+	import junit.framework.TestCase;
107	+	import junit.framework.TestResult;
108	+	import junit.framework.TestSuite;
109
110		/**
111		* Base class for JSR166 Junit TCK tests.  Defines some constants,
#	Line 32 | Line 117 | import java.security.SecurityPermission;
117		*
118		* <ol>
119		*
120	<	* <li> All assertions in code running in generated threads must use
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 54 | 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>
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
75	<	* 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 103 | 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 116 | 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 timeoutMinutes =
292	+	Math.min(15, Math.max(runsPerTest / 60, 1));
293	+	for (TestCase lastTestCase = currentTestCase;;) {
294	+	try { MINUTES.sleep(timeoutMinutes); }
295	+	catch (InterruptedException unexpected) { break; }
296	+	if (lastTestCase == currentTestCase) {
297	+	System.err.printf(
298	+	"Looks like we're stuck running test: %s%n",
299	+	lastTestCase);
300	+	//                     System.err.printf(
301	+	//                         "Looks like we're stuck running test: %s (%d/%d)%n",
302	+	//                         lastTestCase, currentRun, runsPerTest);
303	+	//                     System.err.println("availableProcessors=" +
304	+	//                         Runtime.getRuntime().availableProcessors());
305	+	//                     System.err.printf("cpu model = %s%n", cpuModel());
306	+	dumpTestThreads();
307	+	// one stack dump is probably enough; more would be spam
308	+	break;
309	+	}
310	+	lastTestCase = currentTestCase;
311	+	}}};
312	+	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
313	+	thread.setDaemon(true);
314	+	thread.start();
315	+	}
316	+
317	+	//     public static String cpuModel() {
318	+	//         try {
319	+	//             java.util.regex.Matcher matcher
320	+	//               = Pattern.compile("model name\\s*: (.*)")
321	+	//                 .matcher(new String(
322	+	//                     java.nio.file.Files.readAllBytes(
323	+	//                         java.nio.file.Paths.get("/proc/cpuinfo")), "UTF-8"));
324	+	//             matcher.find();
325	+	//             return matcher.group(1);
326	+	//         } catch (Exception ex) { return null; }
327	+	//     }
328	+
329	+	public void runBare() throws Throwable {
330	+	currentTestCase = this;
331	+	if (methodFilter == null
332	+	|| methodFilter.matcher(toString()).find())
333	+	super.runBare();
334	+	}
335	+
336		protected void runTest() throws Throwable {
337	<	if (profileTests)
338	<	runTestProfiled();
339	<	else
340	<	super.runTest();
337	>	for (int i = 0; i < runsPerTest; i++) {
338	>	// currentRun = i;
339	>	if (profileTests)
340	>	runTestProfiled();
341	>	else
342	>	super.runTest();
343	>	}
344		}
345
346		protected void runTestProfiled() throws Throwable {
347	<	long t0 = System.nanoTime();
348	<	try {
347	>	for (int i = 0; i < 2; i++) {
348	>	long startTime = System.nanoTime();
349		super.runTest();
350	<	} finally {
351	<	long elapsedMillis =
352	<	(System.nanoTime() - t0) / (1000L * 1000L);
353	<	if (elapsedMillis >= profileThreshold)
350	>	long elapsedMillis = millisElapsedSince(startTime);
351	>	if (elapsedMillis < profileThreshold)
352	>	break;
353	>	// Never report first run of any test; treat it as a
354	>	// warmup run, notably to trigger all needed classloading,
355	>	if (i > 0)
356		System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
357		}
358		}
359
360		/**
361	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
361	>	* Runs all JSR166 unit tests using junit.textui.TestRunner.
362		*/
363		public static void main(String[] args) {
364	+	main(suite(), args);
365	+	}
366	+
367	+	static class PithyResultPrinter extends junit.textui.ResultPrinter {
368	+	PithyResultPrinter(java.io.PrintStream writer) { super(writer); }
369	+	long runTime;
370	+	public void startTest(Test test) {}
371	+	protected void printHeader(long runTime) {
372	+	this.runTime = runTime; // defer printing for later
373	+	}
374	+	protected void printFooter(TestResult result) {
375	+	if (result.wasSuccessful()) {
376	+	getWriter().println("OK (" + result.runCount() + " tests)"
377	+	+ "  Time: " + elapsedTimeAsString(runTime));
378	+	} else {
379	+	getWriter().println("Time: " + elapsedTimeAsString(runTime));
380	+	super.printFooter(result);
381	+	}
382	+	}
383	+	}
384	+
385	+	/**
386	+	* Returns a TestRunner that doesn't bother with unnecessary
387	+	* fluff, like printing a "." for each test case.
388	+	*/
389	+	static junit.textui.TestRunner newPithyTestRunner() {
390	+	junit.textui.TestRunner runner = new junit.textui.TestRunner();
391	+	runner.setPrinter(new PithyResultPrinter(System.out));
392	+	return runner;
393	+	}
394	+
395	+	/**
396	+	* Runs all unit tests in the given test suite.
397	+	* Actual behavior influenced by jsr166.* system properties.
398	+	*/
399	+	static void main(Test suite, String[] args) {
400		if (useSecurityManager) {
401		System.err.println("Setting a permissive security manager");
402		Policy.setPolicy(permissivePolicy());
403		System.setSecurityManager(new SecurityManager());
404		}
405	<	int iters = (args.length == 0) ? 1 : Integer.parseInt(args[0]);
406	<
407	<	Test s = suite();
408	<	for (int i = 0; i < iters; ++i) {
151	<	junit.textui.TestRunner.run(s);
405	>	for (int i = 0; i < suiteRuns; i++) {
406	>	TestResult result = newPithyTestRunner().doRun(suite);
407	>	if (!result.wasSuccessful())
408	>	System.exit(1);
409		System.gc();
410		System.runFinalization();
411		}
155	–	System.exit(0);
412		}
413
414		public static TestSuite newTestSuite(Object... suiteOrClasses) {
#	Line 168 | Line 424 | public class JSR166TestCase extends Test
424		return suite;
425		}
426
427	+	public static void addNamedTestClasses(TestSuite suite,
428	+	String... testClassNames) {
429	+	for (String testClassName : testClassNames) {
430	+	try {
431	+	Class<?> testClass = Class.forName(testClassName);
432	+	Method m = testClass.getDeclaredMethod("suite");
433	+	suite.addTest(newTestSuite((Test)m.invoke(null)));
434	+	} catch (ReflectiveOperationException e) {
435	+	throw new AssertionError("Missing test class", e);
436	+	}
437	+	}
438	+	}
439	+
440	+	public static final double JAVA_CLASS_VERSION;
441	+	public static final String JAVA_SPECIFICATION_VERSION;
442	+	static {
443	+	try {
444	+	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
445	+	new java.security.PrivilegedAction<Double>() {
446	+	public Double run() {
447	+	return Double.valueOf(System.getProperty("java.class.version"));}});
448	+	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
449	+	new java.security.PrivilegedAction<String>() {
450	+	public String run() {
451	+	return System.getProperty("java.specification.version");}});
452	+	} catch (Throwable t) {
453	+	throw new Error(t);
454	+	}
455	+	}
456	+
457	+	public static boolean atLeastJava6()  { return JAVA_CLASS_VERSION >= 50.0; }
458	+	public static boolean atLeastJava7()  { return JAVA_CLASS_VERSION >= 51.0; }
459	+	public static boolean atLeastJava8()  { return JAVA_CLASS_VERSION >= 52.0; }
460	+	public static boolean atLeastJava9()  { return JAVA_CLASS_VERSION >= 53.0; }
461	+	public static boolean atLeastJava10() { return JAVA_CLASS_VERSION >= 54.0; }
462	+	public static boolean atLeastJava11() { return JAVA_CLASS_VERSION >= 55.0; }
463	+	public static boolean atLeastJava12() { return JAVA_CLASS_VERSION >= 56.0; }
464	+	public static boolean atLeastJava13() { return JAVA_CLASS_VERSION >= 57.0; }
465	+	public static boolean atLeastJava14() { return JAVA_CLASS_VERSION >= 58.0; }
466	+	public static boolean atLeastJava15() { return JAVA_CLASS_VERSION >= 59.0; }
467	+	public static boolean atLeastJava16() { return JAVA_CLASS_VERSION >= 60.0; }
468	+	public static boolean atLeastJava17() { return JAVA_CLASS_VERSION >= 61.0; }
469	+
470		/**
471		* Collects all JSR166 unit tests as one suite.
472		*/
473		public static Test suite() {
474	<	return newTestSuite(
474	>	// Java7+ test classes
475	>	TestSuite suite = newTestSuite(
476		ForkJoinPoolTest.suite(),
477		ForkJoinTaskTest.suite(),
478		RecursiveActionTest.suite(),
#	Line 186 | Line 486 | public class JSR166TestCase extends Test
486		AbstractQueuedLongSynchronizerTest.suite(),
487		ArrayBlockingQueueTest.suite(),
488		ArrayDequeTest.suite(),
489	+	ArrayListTest.suite(),
490		AtomicBooleanTest.suite(),
491		AtomicIntegerArrayTest.suite(),
492		AtomicIntegerFieldUpdaterTest.suite(),
#	Line 208 | Line 509 | public class JSR166TestCase extends Test
509		CopyOnWriteArrayListTest.suite(),
510		CopyOnWriteArraySetTest.suite(),
511		CountDownLatchTest.suite(),
512	+	CountedCompleterTest.suite(),
513		CyclicBarrierTest.suite(),
514		DelayQueueTest.suite(),
515		EntryTest.suite(),
#	Line 236 | Line 538 | public class JSR166TestCase extends Test
538		TreeMapTest.suite(),
539		TreeSetTest.suite(),
540		TreeSubMapTest.suite(),
541	<	TreeSubSetTest.suite());
541	>	TreeSubSetTest.suite(),
542	>	VectorTest.suite());
543	>
544	>	// Java8+ test classes
545	>	if (atLeastJava8()) {
546	>	String[] java8TestClassNames = {
547	>	"ArrayDeque8Test",
548	>	"Atomic8Test",
549	>	"CompletableFutureTest",
550	>	"ConcurrentHashMap8Test",
551	>	"CountedCompleter8Test",
552	>	"DoubleAccumulatorTest",
553	>	"DoubleAdderTest",
554	>	"ForkJoinPool8Test",
555	>	"ForkJoinTask8Test",
556	>	"HashMapTest",
557	>	"LinkedBlockingDeque8Test",
558	>	"LinkedBlockingQueue8Test",
559	>	"LinkedHashMapTest",
560	>	"LongAccumulatorTest",
561	>	"LongAdderTest",
562	>	"SplittableRandomTest",
563	>	"StampedLockTest",
564	>	"SubmissionPublisherTest",
565	>	"ThreadLocalRandom8Test",
566	>	"TimeUnit8Test",
567	>	};
568	>	addNamedTestClasses(suite, java8TestClassNames);
569	>	}
570	>
571	>	// Java9+ test classes
572	>	if (atLeastJava9()) {
573	>	String[] java9TestClassNames = {
574	>	"AtomicBoolean9Test",
575	>	"AtomicInteger9Test",
576	>	"AtomicIntegerArray9Test",
577	>	"AtomicLong9Test",
578	>	"AtomicLongArray9Test",
579	>	"AtomicReference9Test",
580	>	"AtomicReferenceArray9Test",
581	>	"ExecutorCompletionService9Test",
582	>	"ForkJoinPool9Test",
583	>	};
584	>	addNamedTestClasses(suite, java9TestClassNames);
585	>	}
586	>
587	>	return suite;
588	>	}
589	>
590	>	/** Returns list of junit-style test method names in given class. */
591	>	public static ArrayList<String> testMethodNames(Class<?> testClass) {
592	>	Method[] methods = testClass.getDeclaredMethods();
593	>	ArrayList<String> names = new ArrayList<>(methods.length);
594	>	for (Method method : methods) {
595	>	if (method.getName().startsWith("test")
596	>	&& Modifier.isPublic(method.getModifiers())
597	>	// method.getParameterCount() requires jdk8+
598	>	&& method.getParameterTypes().length == 0) {
599	>	names.add(method.getName());
600	>	}
601	>	}
602	>	return names;
603	>	}
604	>
605	>	/**
606	>	* Returns junit-style testSuite for the given test class, but
607	>	* parameterized by passing extra data to each test.
608	>	*/
609	>	public static <ExtraData> Test parameterizedTestSuite
610	>	(Class<? extends JSR166TestCase> testClass,
611	>	Class<ExtraData> dataClass,
612	>	ExtraData data) {
613	>	try {
614	>	TestSuite suite = new TestSuite();
615	>	Constructor c =
616	>	testClass.getDeclaredConstructor(dataClass, String.class);
617	>	for (String methodName : testMethodNames(testClass))
618	>	suite.addTest((Test) c.newInstance(data, methodName));
619	>	return suite;
620	>	} catch (ReflectiveOperationException e) {
621	>	throw new AssertionError(e);
622	>	}
623		}
624
625	+	/**
626	+	* Returns junit-style testSuite for the jdk8 extension of the
627	+	* given test class, but parameterized by passing extra data to
628	+	* each test.  Uses reflection to allow compilation in jdk7.
629	+	*/
630	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
631	+	(Class<? extends JSR166TestCase> testClass,
632	+	Class<ExtraData> dataClass,
633	+	ExtraData data) {
634	+	if (atLeastJava8()) {
635	+	String name = testClass.getName();
636	+	String name8 = name.replaceAll("Test$", "8Test");
637	+	if (name.equals(name8)) throw new AssertionError(name);
638	+	try {
639	+	return (Test)
640	+	Class.forName(name8)
641	+	.getMethod("testSuite", dataClass)
642	+	.invoke(null, data);
643	+	} catch (ReflectiveOperationException e) {
644	+	throw new AssertionError(e);
645	+	}
646	+	} else {
647	+	return new TestSuite();
648	+	}
649	+	}
650	+
651	+	// Delays for timing-dependent tests, in milliseconds.
652
653		public static long SHORT_DELAY_MS;
654		public static long SMALL_DELAY_MS;
655		public static long MEDIUM_DELAY_MS;
656		public static long LONG_DELAY_MS;
657
658	+	private static final long RANDOM_TIMEOUT;
659	+	private static final long RANDOM_EXPIRED_TIMEOUT;
660	+	private static final TimeUnit RANDOM_TIMEUNIT;
661	+	static {
662	+	ThreadLocalRandom rnd = ThreadLocalRandom.current();
663	+	long[] timeouts = { Long.MIN_VALUE, -1, 0, 1, Long.MAX_VALUE };
664	+	RANDOM_TIMEOUT = timeouts[rnd.nextInt(timeouts.length)];
665	+	RANDOM_EXPIRED_TIMEOUT = timeouts[rnd.nextInt(3)];
666	+	TimeUnit[] timeUnits = TimeUnit.values();
667	+	RANDOM_TIMEUNIT = timeUnits[rnd.nextInt(timeUnits.length)];
668	+	}
669	+
670	+	/**
671	+	* Returns a timeout for use when any value at all will do.
672	+	*/
673	+	static long randomTimeout() { return RANDOM_TIMEOUT; }
674	+
675	+	/**
676	+	* Returns a timeout that means "no waiting", i.e. not positive.
677	+	*/
678	+	static long randomExpiredTimeout() { return RANDOM_EXPIRED_TIMEOUT; }
679
680		/**
681	<	* Returns the shortest timed delay. This could
682	<	* be reimplemented to use for example a Property.
681	>	* Returns a random non-null TimeUnit.
682	>	*/
683	>	static TimeUnit randomTimeUnit() { return RANDOM_TIMEUNIT; }
684	>
685	>	/**
686	>	* Returns the shortest timed delay. This can be scaled up for
687	>	* slow machines using the jsr166.delay.factor system property,
688	>	* or via jtreg's -timeoutFactor: flag.
689	>	* http://openjdk.java.net/jtreg/command-help.html
690		*/
691		protected long getShortDelay() {
692	<	return 50;
692	>	return (long) (50 * delayFactor);
693		}
694
257	–
695		/**
696		* Sets delays as multiples of SHORT_DELAY.
697		*/
#	Line 265 | Line 702 | public class JSR166TestCase extends Test
702		LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
703		}
704
705	+	private static final long TIMEOUT_DELAY_MS
706	+	= (long) (12.0 * Math.cbrt(delayFactor));
707	+
708	+	/**
709	+	* Returns a timeout in milliseconds to be used in tests that verify
710	+	* that operations block or time out.  We want this to be longer
711	+	* than the OS scheduling quantum, but not too long, so don't scale
712	+	* linearly with delayFactor; we use "crazy" cube root instead.
713	+	*/
714	+	static long timeoutMillis() {
715	+	return TIMEOUT_DELAY_MS;
716	+	}
717	+
718	+	/**
719	+	* Returns a new Date instance representing a time at least
720	+	* delayMillis milliseconds in the future.
721	+	*/
722	+	Date delayedDate(long delayMillis) {
723	+	// Add 1 because currentTimeMillis is known to round into the past.
724	+	return new Date(System.currentTimeMillis() + delayMillis + 1);
725	+	}
726	+
727		/**
728		* The first exception encountered if any threadAssertXXX method fails.
729		*/
730		private final AtomicReference<Throwable> threadFailure
731	<	= new AtomicReference<Throwable>(null);
731	>	= new AtomicReference<>(null);
732
733		/**
734		* Records an exception so that it can be rethrown later in the test
#	Line 278 | Line 737 | public class JSR166TestCase extends Test
737		* the same test have no effect.
738		*/
739		public void threadRecordFailure(Throwable t) {
740	+	System.err.println(t);
741	+	dumpTestThreads();
742		threadFailure.compareAndSet(null, t);
743		}
744
#	Line 285 | Line 746 | public class JSR166TestCase extends Test
746		setDelays();
747		}
748
749	+	void tearDownFail(String format, Object... args) {
750	+	String msg = toString() + ": " + String.format(format, args);
751	+	System.err.println(msg);
752	+	dumpTestThreads();
753	+	throw new AssertionError(msg);
754	+	}
755	+
756		/**
757	+	* Extra checks that get done for all test cases.
758	+	*
759		* Triggers test case failure if any thread assertions have failed,
760		* by rethrowing, in the test harness thread, any exception recorded
761		* earlier by threadRecordFailure.
762	+	*
763	+	* Triggers test case failure if interrupt status is set in the main thread.
764		*/
765		public void tearDown() throws Exception {
766		Throwable t = threadFailure.getAndSet(null);
#	Line 299 | Line 771 | public class JSR166TestCase extends Test
771		throw (RuntimeException) t;
772		else if (t instanceof Exception)
773		throw (Exception) t;
774	<	else {
775	<	AssertionFailedError afe =
776	<	new AssertionFailedError(t.toString());
777	<	afe.initCause(t);
778	<	throw afe;
774	>	else
775	>	throw new AssertionError(t.toString(), t);
776	>	}
777	>
778	>	if (Thread.interrupted())
779	>	tearDownFail("interrupt status set in main thread");
780	>
781	>	checkForkJoinPoolThreadLeaks();
782	>	}
783	>
784	>	/**
785	>	* Finds missing PoolCleaners
786	>	*/
787	>	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
788	>	Thread[] survivors = new Thread[7];
789	>	int count = Thread.enumerate(survivors);
790	>	for (int i = 0; i < count; i++) {
791	>	Thread thread = survivors[i];
792	>	String name = thread.getName();
793	>	if (name.startsWith("ForkJoinPool-")) {
794	>	// give thread some time to terminate
795	>	thread.join(LONG_DELAY_MS);
796	>	if (thread.isAlive())
797	>	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
798	>	thread);
799		}
800		}
801	+
802	+	if (!ForkJoinPool.commonPool()
803	+	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
804	+	tearDownFail("ForkJoin common pool thread stuck");
805		}
806
807		/**
808		* Just like fail(reason), but additionally recording (using
809	<	* threadRecordFailure) any AssertionFailedError thrown, so that
810	<	* the current testcase will fail.
809	>	* threadRecordFailure) any AssertionError thrown, so that the
810	>	* current testcase will fail.
811		*/
812		public void threadFail(String reason) {
813		try {
814		fail(reason);
815	<	} catch (AssertionFailedError t) {
816	<	threadRecordFailure(t);
817	<	fail(reason);
815	>	} catch (AssertionError fail) {
816	>	threadRecordFailure(fail);
817	>	throw fail;
818		}
819		}
820
821		/**
822		* Just like assertTrue(b), but additionally recording (using
823	<	* threadRecordFailure) any AssertionFailedError thrown, so that
824	<	* the current testcase will fail.
823	>	* threadRecordFailure) any AssertionError thrown, so that the
824	>	* current testcase will fail.
825		*/
826		public void threadAssertTrue(boolean b) {
827		try {
828		assertTrue(b);
829	<	} catch (AssertionFailedError t) {
830	<	threadRecordFailure(t);
831	<	throw t;
829	>	} catch (AssertionError fail) {
830	>	threadRecordFailure(fail);
831	>	throw fail;
832		}
833		}
834
835		/**
836		* Just like assertFalse(b), but additionally recording (using
837	<	* threadRecordFailure) any AssertionFailedError thrown, so that
838	<	* the current testcase will fail.
837	>	* threadRecordFailure) any AssertionError thrown, so that the
838	>	* current testcase will fail.
839		*/
840		public void threadAssertFalse(boolean b) {
841		try {
842		assertFalse(b);
843	<	} catch (AssertionFailedError t) {
844	<	threadRecordFailure(t);
845	<	throw t;
843	>	} catch (AssertionError fail) {
844	>	threadRecordFailure(fail);
845	>	throw fail;
846		}
847		}
848
849		/**
850		* Just like assertNull(x), but additionally recording (using
851	<	* threadRecordFailure) any AssertionFailedError thrown, so that
852	<	* the current testcase will fail.
851	>	* threadRecordFailure) any AssertionError thrown, so that the
852	>	* current testcase will fail.
853		*/
854		public void threadAssertNull(Object x) {
855		try {
856		assertNull(x);
857	<	} catch (AssertionFailedError t) {
858	<	threadRecordFailure(t);
859	<	throw t;
857	>	} catch (AssertionError fail) {
858	>	threadRecordFailure(fail);
859	>	throw fail;
860		}
861		}
862
863		/**
864		* Just like assertEquals(x, y), but additionally recording (using
865	<	* threadRecordFailure) any AssertionFailedError thrown, so that
866	<	* the current testcase will fail.
865	>	* threadRecordFailure) any AssertionError thrown, so that the
866	>	* current testcase will fail.
867		*/
868		public void threadAssertEquals(long x, long y) {
869		try {
870		assertEquals(x, y);
871	<	} catch (AssertionFailedError t) {
872	<	threadRecordFailure(t);
873	<	throw t;
871	>	} catch (AssertionError fail) {
872	>	threadRecordFailure(fail);
873	>	throw fail;
874		}
875		}
876
877		/**
878		* Just like assertEquals(x, y), but additionally recording (using
879	<	* threadRecordFailure) any AssertionFailedError thrown, so that
880	<	* the current testcase will fail.
879	>	* threadRecordFailure) any AssertionError thrown, so that the
880	>	* current testcase will fail.
881		*/
882		public void threadAssertEquals(Object x, Object y) {
883		try {
884		assertEquals(x, y);
885	<	} catch (AssertionFailedError t) {
886	<	threadRecordFailure(t);
887	<	throw t;
888	<	} catch (Throwable t) {
889	<	threadUnexpectedException(t);
885	>	} catch (AssertionError fail) {
886	>	threadRecordFailure(fail);
887	>	throw fail;
888	>	} catch (Throwable fail) {
889	>	threadUnexpectedException(fail);
890		}
891		}
892
893		/**
894		* Just like assertSame(x, y), but additionally recording (using
895	<	* threadRecordFailure) any AssertionFailedError thrown, so that
896	<	* the current testcase will fail.
895	>	* threadRecordFailure) any AssertionError thrown, so that the
896	>	* current testcase will fail.
897		*/
898		public void threadAssertSame(Object x, Object y) {
899		try {
900		assertSame(x, y);
901	<	} catch (AssertionFailedError t) {
902	<	threadRecordFailure(t);
903	<	throw t;
901	>	} catch (AssertionError fail) {
902	>	threadRecordFailure(fail);
903	>	throw fail;
904		}
905		}
906
#	Line 424 | Line 920 | public class JSR166TestCase extends Test
920
921		/**
922		* Records the given exception using {@link #threadRecordFailure},
923	<	* then rethrows the exception, wrapping it in an
924	<	* AssertionFailedError if necessary.
923	>	* then rethrows the exception, wrapping it in an AssertionError
924	>	* if necessary.
925		*/
926		public void threadUnexpectedException(Throwable t) {
927		threadRecordFailure(t);
#	Line 434 | Line 930 | public class JSR166TestCase extends Test
930		throw (RuntimeException) t;
931		else if (t instanceof Error)
932		throw (Error) t;
933	<	else {
934	<	AssertionFailedError afe =
439	<	new AssertionFailedError("unexpected exception: " + t);
440	<	t.initCause(t);
441	<	throw afe;
442	<	}
933	>	else
934	>	throw new AssertionError("unexpected exception: " + t, t);
935		}
936
937		/**
938	<	* Delays, via Thread.sleep for the given millisecond delay, but
938	>	* Delays, via Thread.sleep, for the given millisecond delay, but
939		* if the sleep is shorter than specified, may re-sleep or yield
940	<	* until time elapses.
940	>	* until time elapses.  Ensures that the given time, as measured
941	>	* by System.nanoTime(), has elapsed.
942		*/
943	<	public static void delay(long ms) throws InterruptedException {
944	<	long startTime = System.nanoTime();
945	<	long ns = ms * 1000 * 1000;
946	<	for (;;) {
947	<	if (ms > 0L)
948	<	Thread.sleep(ms);
943	>	static void delay(long millis) throws InterruptedException {
944	>	long nanos = millis * (1000 * 1000);
945	>	final long wakeupTime = System.nanoTime() + nanos;
946	>	do {
947	>	if (millis > 0L)
948	>	Thread.sleep(millis);
949		else // too short to sleep
950		Thread.yield();
951	<	long d = ns - (System.nanoTime() - startTime);
952	<	if (d > 0L)
953	<	ms = d / (1000 * 1000);
954	<	else
955	<	break;
951	>	nanos = wakeupTime - System.nanoTime();
952	>	millis = nanos / (1000 * 1000);
953	>	} while (nanos >= 0L);
954	>	}
955	>
956	>	/**
957	>	* Allows use of try-with-resources with per-test thread pools.
958	>	*/
959	>	class PoolCleaner implements AutoCloseable {
960	>	private final ExecutorService pool;
961	>	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
962	>	public void close() { joinPool(pool); }
963	>	}
964	>
965	>	/**
966	>	* An extension of PoolCleaner that has an action to release the pool.
967	>	*/
968	>	class PoolCleanerWithReleaser extends PoolCleaner {
969	>	private final Runnable releaser;
970	>	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
971	>	super(pool);
972	>	this.releaser = releaser;
973	>	}
974	>	public void close() {
975	>	try {
976	>	releaser.run();
977	>	} finally {
978	>	super.close();
979	>	}
980		}
981		}
982
983	+	PoolCleaner cleaner(ExecutorService pool) {
984	+	return new PoolCleaner(pool);
985	+	}
986	+
987	+	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
988	+	return new PoolCleanerWithReleaser(pool, releaser);
989	+	}
990	+
991	+	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
992	+	return new PoolCleanerWithReleaser(pool, releaser(latch));
993	+	}
994	+
995	+	Runnable releaser(final CountDownLatch latch) {
996	+	return new Runnable() { public void run() {
997	+	do { latch.countDown(); }
998	+	while (latch.getCount() > 0);
999	+	}};
1000	+	}
1001	+
1002	+	PoolCleaner cleaner(ExecutorService pool, AtomicBoolean flag) {
1003	+	return new PoolCleanerWithReleaser(pool, releaser(flag));
1004	+	}
1005	+
1006	+	Runnable releaser(final AtomicBoolean flag) {
1007	+	return new Runnable() { public void run() { flag.set(true); }};
1008	+	}
1009	+
1010		/**
1011		* Waits out termination of a thread pool or fails doing so.
1012		*/
1013	<	public void joinPool(ExecutorService exec) {
1013	>	void joinPool(ExecutorService pool) {
1014		try {
1015	<	exec.shutdown();
1016	<	assertTrue("ExecutorService did not terminate in a timely manner",
1017	<	exec.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS));
1015	>	pool.shutdown();
1016	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
1017	>	try {
1018	>	threadFail("ExecutorService " + pool +
1019	>	" did not terminate in a timely manner");
1020	>	} finally {
1021	>	// last resort, for the benefit of subsequent tests
1022	>	pool.shutdownNow();
1023	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
1024	>	}
1025	>	}
1026		} catch (SecurityException ok) {
1027		// Allowed in case test doesn't have privs
1028	<	} catch (InterruptedException ie) {
1029	<	fail("Unexpected InterruptedException");
1028	>	} catch (InterruptedException fail) {
1029	>	threadFail("Unexpected InterruptedException");
1030	>	}
1031	>	}
1032	>
1033	>	/**
1034	>	* Like Runnable, but with the freedom to throw anything.
1035	>	* junit folks had the same idea:
1036	>	* http://junit.org/junit5/docs/snapshot/api/org/junit/gen5/api/Executable.html
1037	>	*/
1038	>	interface Action { public void run() throws Throwable; }
1039	>
1040	>	/**
1041	>	* Runs all the given actions in parallel, failing if any fail.
1042	>	* Useful for running multiple variants of tests that are
1043	>	* necessarily individually slow because they must block.
1044	>	*/
1045	>	void testInParallel(Action ... actions) {
1046	>	ExecutorService pool = Executors.newCachedThreadPool();
1047	>	try (PoolCleaner cleaner = cleaner(pool)) {
1048	>	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
1049	>	for (final Action action : actions)
1050	>	futures.add(pool.submit(new CheckedRunnable() {
1051	>	public void realRun() throws Throwable { action.run();}}));
1052	>	for (Future<?> future : futures)
1053	>	try {
1054	>	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
1055	>	} catch (ExecutionException ex) {
1056	>	threadUnexpectedException(ex.getCause());
1057	>	} catch (Exception ex) {
1058	>	threadUnexpectedException(ex);
1059	>	}
1060	>	}
1061	>	}
1062	>
1063	>	/**
1064	>	* A debugging tool to print stack traces of most threads, as jstack does.
1065	>	* Uninteresting threads are filtered out.
1066	>	*/
1067	>	static void dumpTestThreads() {
1068	>	SecurityManager sm = System.getSecurityManager();
1069	>	if (sm != null) {
1070	>	try {
1071	>	System.setSecurityManager(null);
1072	>	} catch (SecurityException giveUp) {
1073	>	return;
1074	>	}
1075	>	}
1076	>
1077	>	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
1078	>	System.err.println("------ stacktrace dump start ------");
1079	>	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
1080	>	final String name = info.getThreadName();
1081	>	String lockName;
1082	>	if ("Signal Dispatcher".equals(name))
1083	>	continue;
1084	>	if ("Reference Handler".equals(name)
1085	>	&& (lockName = info.getLockName()) != null
1086	>	&& lockName.startsWith("java.lang.ref.Reference$Lock"))
1087	>	continue;
1088	>	if ("Finalizer".equals(name)
1089	>	&& (lockName = info.getLockName()) != null
1090	>	&& lockName.startsWith("java.lang.ref.ReferenceQueue$Lock"))
1091	>	continue;
1092	>	if ("checkForWedgedTest".equals(name))
1093	>	continue;
1094	>	System.err.print(info);
1095	>	}
1096	>	System.err.println("------ stacktrace dump end ------");
1097	>
1098	>	if (sm != null) System.setSecurityManager(sm);
1099	>	}
1100	>
1101	>	/**
1102	>	* Checks that thread eventually enters the expected blocked thread state.
1103	>	*/
1104	>	void assertThreadBlocks(Thread thread, Thread.State expected) {
1105	>	// always sleep at least 1 ms, with high probability avoiding
1106	>	// transitory states
1107	>	for (long retries = LONG_DELAY_MS * 3 / 4; retries-->0; ) {
1108	>	try { delay(1); }
1109	>	catch (InterruptedException fail) {
1110	>	throw new AssertionError("Unexpected InterruptedException", fail);
1111	>	}
1112	>	Thread.State s = thread.getState();
1113	>	if (s == expected)
1114	>	return;
1115	>	else if (s == Thread.State.TERMINATED)
1116	>	fail("Unexpected thread termination");
1117		}
1118	+	fail("timed out waiting for thread to enter thread state " + expected);
1119		}
1120
1121	+	/**
1122	+	* Checks that future.get times out, with the default timeout of
1123	+	* {@code timeoutMillis()}.
1124	+	*/
1125	+	void assertFutureTimesOut(Future future) {
1126	+	assertFutureTimesOut(future, timeoutMillis());
1127	+	}
1128	+
1129	+	/**
1130	+	* Checks that future.get times out, with the given millisecond timeout.
1131	+	*/
1132	+	void assertFutureTimesOut(Future future, long timeoutMillis) {
1133	+	long startTime = System.nanoTime();
1134	+	try {
1135	+	future.get(timeoutMillis, MILLISECONDS);
1136	+	shouldThrow();
1137	+	} catch (TimeoutException success) {
1138	+	} catch (Exception fail) {
1139	+	threadUnexpectedException(fail);
1140	+	} finally { future.cancel(true); }
1141	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
1142	+	}
1143
1144		/**
1145		* Fails with message "should throw exception".
#	Line 494 | Line 1156 | public class JSR166TestCase extends Test
1156		}
1157
1158		/**
1159	+	* The maximum number of consecutive spurious wakeups we should
1160	+	* tolerate (from APIs like LockSupport.park) before failing a test.
1161	+	*/
1162	+	static final int MAX_SPURIOUS_WAKEUPS = 10;
1163	+
1164	+	/**
1165		* The number of elements to place in collections, arrays, etc.
1166		*/
1167		public static final int SIZE = 20;
#	Line 518 | Line 1186 | public class JSR166TestCase extends Test
1186		public static final Integer m6  = new Integer(-6);
1187		public static final Integer m10 = new Integer(-10);
1188
521	–
1189		/**
1190		* Runs Runnable r with a security policy that permits precisely
1191		* the specified permissions.  If there is no current security
#	Line 530 | Line 1197 | public class JSR166TestCase extends Test
1197		SecurityManager sm = System.getSecurityManager();
1198		if (sm == null) {
1199		r.run();
1200	+	}
1201	+	runWithSecurityManagerWithPermissions(r, permissions);
1202	+	}
1203	+
1204	+	/**
1205	+	* Runs Runnable r with a security policy that permits precisely
1206	+	* the specified permissions.  If there is no current security
1207	+	* manager, a temporary one is set for the duration of the
1208	+	* Runnable.  We require that any security manager permit
1209	+	* getPolicy/setPolicy.
1210	+	*/
1211	+	public void runWithSecurityManagerWithPermissions(Runnable r,
1212	+	Permission... permissions) {
1213	+	SecurityManager sm = System.getSecurityManager();
1214	+	if (sm == null) {
1215		Policy savedPolicy = Policy.getPolicy();
1216		try {
1217		Policy.setPolicy(permissivePolicy());
1218		System.setSecurityManager(new SecurityManager());
1219	<	runWithPermissions(r, permissions);
1219	>	runWithSecurityManagerWithPermissions(r, permissions);
1220		} finally {
1221		System.setSecurityManager(null);
1222		Policy.setPolicy(savedPolicy);
#	Line 582 | Line 1264 | public class JSR166TestCase extends Test
1264		return perms.implies(p);
1265		}
1266		public void refresh() {}
1267	+	public String toString() {
1268	+	List<Permission> ps = new ArrayList<>();
1269	+	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1270	+	ps.add(e.nextElement());
1271	+	return "AdjustablePolicy with permissions " + ps;
1272	+	}
1273		}
1274
1275		/**
#	Line 605 | Line 1293 | public class JSR166TestCase extends Test
1293
1294		/**
1295		* Sleeps until the given time has elapsed.
1296	<	* Throws AssertionFailedError if interrupted.
1296	>	* Throws AssertionError if interrupted.
1297		*/
1298	<	void sleep(long millis) {
1298	>	static void sleep(long millis) {
1299		try {
1300		delay(millis);
1301	<	} catch (InterruptedException ie) {
1302	<	AssertionFailedError afe =
615	<	new AssertionFailedError("Unexpected InterruptedException");
616	<	afe.initCause(ie);
617	<	throw afe;
1301	>	} catch (InterruptedException fail) {
1302	>	throw new AssertionError("Unexpected InterruptedException", fail);
1303		}
1304		}
1305
1306		/**
1307	<	* Sleeps until the timeout has elapsed, or interrupted.
1308	<	* Does <em>NOT</em> throw InterruptedException.
1307	>	* Spin-waits up to the specified number of milliseconds for the given
1308	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1309	>	* @param waitingForGodot if non-null, an additional condition to satisfy
1310		*/
1311	<	void sleepTillInterrupted(long timeoutMillis) {
1312	<	try {
1313	<	Thread.sleep(timeoutMillis);
1314	<	} catch (InterruptedException wakeup) {}
1311	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis,
1312	>	Callable<Boolean> waitingForGodot) {
1313	>	for (long startTime = 0L;;) {
1314	>	switch (thread.getState()) {
1315	>	default: break;
1316	>	case BLOCKED: case WAITING: case TIMED_WAITING:
1317	>	try {
1318	>	if (waitingForGodot == null || waitingForGodot.call())
1319	>	return;
1320	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1321	>	break;
1322	>	case TERMINATED:
1323	>	fail("Unexpected thread termination");
1324	>	}
1325	>
1326	>	if (startTime == 0L)
1327	>	startTime = System.nanoTime();
1328	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1329	>	assertTrue(thread.isAlive());
1330	>	if (waitingForGodot == null
1331	>	|| thread.getState() == Thread.State.RUNNABLE)
1332	>	fail("timed out waiting for thread to enter wait state");
1333	>	else
1334	>	fail("timed out waiting for condition, thread state="
1335	>	+ thread.getState());
1336	>	}
1337	>	Thread.yield();
1338	>	}
1339		}
1340
1341		/**
1342	<	* Waits up to the specified number of milliseconds for the given
1342	>	* Spin-waits up to the specified number of milliseconds for the given
1343		* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1344		*/
1345		void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1346	<	long timeoutNanos = timeoutMillis * 1000L * 1000L;
637	<	long t0 = System.nanoTime();
638	<	for (;;) {
639	<	Thread.State s = thread.getState();
640	<	if (s == Thread.State.BLOCKED ||
641	<	s == Thread.State.WAITING ||
642	<	s == Thread.State.TIMED_WAITING)
643	<	return;
644	<	else if (s == Thread.State.TERMINATED)
645	<	fail("Unexpected thread termination");
646	<	else if (System.nanoTime() - t0 > timeoutNanos) {
647	<	threadAssertTrue(thread.isAlive());
648	<	return;
649	<	}
650	<	Thread.yield();
651	<	}
1346	>	waitForThreadToEnterWaitState(thread, timeoutMillis, null);
1347		}
1348
1349		/**
1350	<	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
1351	<	* state: BLOCKED, WAITING, or TIMED_WAITING.
1350	>	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1351	>	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1352		*/
1353		void waitForThreadToEnterWaitState(Thread thread) {
1354	<	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
1354	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS, null);
1355	>	}
1356	>
1357	>	/**
1358	>	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1359	>	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING,
1360	>	* and additionally satisfy the given condition.
1361	>	*/
1362	>	void waitForThreadToEnterWaitState(Thread thread,
1363	>	Callable<Boolean> waitingForGodot) {
1364	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS, waitingForGodot);
1365		}
1366
1367		/**
1368		* Returns the number of milliseconds since time given by
1369		* startNanoTime, which must have been previously returned from a
1370	<	* call to {@link System.nanoTime()}.
1370	>	* call to {@link System#nanoTime()}.
1371		*/
1372	<	long millisElapsedSince(long startNanoTime) {
1372	>	static long millisElapsedSince(long startNanoTime) {
1373		return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1374		}
1375
1376	+	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1377	+	//         long startTime = System.nanoTime();
1378	+	//         try {
1379	+	//             r.run();
1380	+	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1381	+	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1382	+	//             throw new AssertionError("did not return promptly");
1383	+	//     }
1384	+
1385	+	//     void assertTerminatesPromptly(Runnable r) {
1386	+	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1387	+	//     }
1388	+
1389	+	/**
1390	+	* Checks that timed f.get() returns the expected value, and does not
1391	+	* wait for the timeout to elapse before returning.
1392	+	*/
1393	+	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1394	+	long startTime = System.nanoTime();
1395	+	T actual = null;
1396	+	try {
1397	+	actual = f.get(timeoutMillis, MILLISECONDS);
1398	+	} catch (Throwable fail) { threadUnexpectedException(fail); }
1399	+	assertEquals(expectedValue, actual);
1400	+	if (millisElapsedSince(startTime) > timeoutMillis/2)
1401	+	throw new AssertionError("timed get did not return promptly");
1402	+	}
1403	+
1404	+	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1405	+	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1406	+	}
1407	+
1408		/**
1409		* Returns a new started daemon Thread running the given runnable.
1410		*/
#	Line 686 | Line 1423 | public class JSR166TestCase extends Test
1423		void awaitTermination(Thread t, long timeoutMillis) {
1424		try {
1425		t.join(timeoutMillis);
1426	<	} catch (InterruptedException ie) {
1427	<	threadUnexpectedException(ie);
1426	>	} catch (InterruptedException fail) {
1427	>	threadUnexpectedException(fail);
1428		} finally {
1429	<	if (t.isAlive()) {
1429	>	if (t.getState() != Thread.State.TERMINATED) {
1430		t.interrupt();
1431	<	fail("Test timed out");
1431	>	threadFail("timed out waiting for thread to terminate");
1432		}
1433		}
1434		}
#	Line 713 | Line 1450 | public class JSR166TestCase extends Test
1450		public final void run() {
1451		try {
1452		realRun();
1453	<	} catch (Throwable t) {
1454	<	threadUnexpectedException(t);
718	<	}
719	<	}
720	<	}
721	<
722	<	public abstract class RunnableShouldThrow implements Runnable {
723	<	protected abstract void realRun() throws Throwable;
724	<
725	<	final Class<?> exceptionClass;
726	<
727	<	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
728	<	this.exceptionClass = exceptionClass;
729	<	}
730	<
731	<	public final void run() {
732	<	try {
733	<	realRun();
734	<	threadShouldThrow(exceptionClass.getSimpleName());
735	<	} catch (Throwable t) {
736	<	if (! exceptionClass.isInstance(t))
737	<	threadUnexpectedException(t);
1453	>	} catch (Throwable fail) {
1454	>	threadUnexpectedException(fail);
1455		}
1456		}
1457		}
#	Line 751 | Line 1468 | public class JSR166TestCase extends Test
1468		public final void run() {
1469		try {
1470		realRun();
754	–	threadShouldThrow(exceptionClass.getSimpleName());
1471		} catch (Throwable t) {
1472		if (! exceptionClass.isInstance(t))
1473		threadUnexpectedException(t);
1474	+	return;
1475		}
1476	+	threadShouldThrow(exceptionClass.getSimpleName());
1477		}
1478		}
1479
#	Line 765 | Line 1483 | public class JSR166TestCase extends Test
1483		public final void run() {
1484		try {
1485		realRun();
768	–	threadShouldThrow("InterruptedException");
1486		} catch (InterruptedException success) {
1487	<	} catch (Throwable t) {
1488	<	threadUnexpectedException(t);
1487	>	threadAssertFalse(Thread.interrupted());
1488	>	return;
1489	>	} catch (Throwable fail) {
1490	>	threadUnexpectedException(fail);
1491		}
1492	+	threadShouldThrow("InterruptedException");
1493		}
1494		}
1495
#	Line 779 | Line 1499 | public class JSR166TestCase extends Test
1499		public final T call() {
1500		try {
1501		return realCall();
1502	<	} catch (Throwable t) {
1503	<	threadUnexpectedException(t);
784	<	return null;
1502	>	} catch (Throwable fail) {
1503	>	threadUnexpectedException(fail);
1504		}
1505	<	}
787	<	}
788	<
789	<	public abstract class CheckedInterruptedCallable<T>
790	<	implements Callable<T> {
791	<	protected abstract T realCall() throws Throwable;
792	<
793	<	public final T call() {
794	<	try {
795	<	T result = realCall();
796	<	threadShouldThrow("InterruptedException");
797	<	return result;
798	<	} catch (InterruptedException success) {
799	<	} catch (Throwable t) {
800	<	threadUnexpectedException(t);
801	<	}
802	<	return null;
1505	>	throw new AssertionError("unreached");
1506		}
1507		}
1508
#	Line 814 | Line 1517 | public class JSR166TestCase extends Test
1517		public static final String TEST_STRING = "a test string";
1518
1519		public static class StringTask implements Callable<String> {
1520	<	public String call() { return TEST_STRING; }
1520	>	final String value;
1521	>	public StringTask() { this(TEST_STRING); }
1522	>	public StringTask(String value) { this.value = value; }
1523	>	public String call() { return value; }
1524		}
1525
1526		public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
#	Line 827 | Line 1533 | public class JSR166TestCase extends Test
1533		}};
1534		}
1535
1536	<	public Runnable awaiter(final CountDownLatch latch) {
1536	>	public Runnable countDowner(final CountDownLatch latch) {
1537		return new CheckedRunnable() {
1538		public void realRun() throws InterruptedException {
1539	<	latch.await();
1539	>	latch.countDown();
1540		}};
1541		}
1542
1543	<	public static class NPETask implements Callable<String> {
1544	<	public String call() { throw new NullPointerException(); }
1545	<	}
1546	<
1547	<	public static class CallableOne implements Callable<Integer> {
1548	<	public Integer call() { return one; }
1549	<	}
1550	<
1551	<	public class ShortRunnable extends CheckedRunnable {
1552	<	protected void realRun() throws Throwable {
1553	<	delay(SHORT_DELAY_MS);
1543	>	class LatchAwaiter extends CheckedRunnable {
1544	>	static final int NEW = 0;
1545	>	static final int RUNNING = 1;
1546	>	static final int DONE = 2;
1547	>	final CountDownLatch latch;
1548	>	int state = NEW;
1549	>	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1550	>	public void realRun() throws InterruptedException {
1551	>	state = 1;
1552	>	await(latch);
1553	>	state = 2;
1554		}
1555		}
1556
1557	<	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1558	<	protected void realRun() throws InterruptedException {
853	<	delay(SHORT_DELAY_MS);
854	<	}
1557	>	public LatchAwaiter awaiter(CountDownLatch latch) {
1558	>	return new LatchAwaiter(latch);
1559		}
1560
1561	<	public class SmallRunnable extends CheckedRunnable {
1562	<	protected void realRun() throws Throwable {
1563	<	delay(SMALL_DELAY_MS);
1561	>	public void await(CountDownLatch latch, long timeoutMillis) {
1562	>	boolean timedOut = false;
1563	>	try {
1564	>	timedOut = !latch.await(timeoutMillis, MILLISECONDS);
1565	>	} catch (Throwable fail) {
1566	>	threadUnexpectedException(fail);
1567		}
1568	+	if (timedOut)
1569	+	fail("timed out waiting for CountDownLatch for "
1570	+	+ (timeoutMillis/1000) + " sec");
1571		}
1572
1573	<	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1574	<	protected void realRun() {
865	<	try {
866	<	delay(SMALL_DELAY_MS);
867	<	} catch (InterruptedException ok) {}
868	<	}
1573	>	public void await(CountDownLatch latch) {
1574	>	await(latch, LONG_DELAY_MS);
1575		}
1576
1577	<	public class SmallCallable extends CheckedCallable {
1578	<	protected Object realCall() throws InterruptedException {
1579	<	delay(SMALL_DELAY_MS);
1580	<	return Boolean.TRUE;
1577	>	public void await(Semaphore semaphore) {
1578	>	boolean timedOut = false;
1579	>	try {
1580	>	timedOut = !semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS);
1581	>	} catch (Throwable fail) {
1582	>	threadUnexpectedException(fail);
1583		}
1584	+	if (timedOut)
1585	+	fail("timed out waiting for Semaphore for "
1586	+	+ (LONG_DELAY_MS/1000) + " sec");
1587		}
1588
1589	<	public class MediumRunnable extends CheckedRunnable {
1590	<	protected void realRun() throws Throwable {
1591	<	delay(MEDIUM_DELAY_MS);
1589	>	public void await(CyclicBarrier barrier) {
1590	>	try {
1591	>	barrier.await(LONG_DELAY_MS, MILLISECONDS);
1592	>	} catch (Throwable fail) {
1593	>	threadUnexpectedException(fail);
1594		}
1595		}
1596
1597	<	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1598	<	protected void realRun() throws InterruptedException {
1599	<	delay(MEDIUM_DELAY_MS);
1600	<	}
1597	>	//     /**
1598	>	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1599	>	//      */
1600	>	//     public void await(AtomicBoolean flag) {
1601	>	//         await(flag, LONG_DELAY_MS);
1602	>	//     }
1603	>
1604	>	//     /**
1605	>	//      * Spin-waits up to the specified timeout until flag becomes true.
1606	>	//      */
1607	>	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1608	>	//         long startTime = System.nanoTime();
1609	>	//         while (!flag.get()) {
1610	>	//             if (millisElapsedSince(startTime) > timeoutMillis)
1611	>	//                 throw new AssertionError("timed out");
1612	>	//             Thread.yield();
1613	>	//         }
1614	>	//     }
1615	>
1616	>	public static class NPETask implements Callable<String> {
1617	>	public String call() { throw new NullPointerException(); }
1618		}
1619
1620		public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
#	Line 896 | Line 1626 | public class JSR166TestCase extends Test
1626		}};
1627		}
1628
899	–	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
900	–	protected void realRun() {
901	–	try {
902	–	delay(MEDIUM_DELAY_MS);
903	–	} catch (InterruptedException ok) {}
904	–	}
905	–	}
906	–
907	–	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
908	–	protected void realRun() {
909	–	try {
910	–	delay(LONG_DELAY_MS);
911	–	} catch (InterruptedException ok) {}
912	–	}
913	–	}
914	–
1629		/**
1630		* For use as ThreadFactory in constructors
1631		*/
#	Line 925 | Line 1639 | public class JSR166TestCase extends Test
1639		boolean isDone();
1640		}
1641
928	–	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
929	–	return new TrackedRunnable() {
930	–	private volatile boolean done = false;
931	–	public boolean isDone() { return done; }
932	–	public void run() {
933	–	try {
934	–	delay(timeoutMillis);
935	–	done = true;
936	–	} catch (InterruptedException ok) {}
937	–	}
938	–	};
939	–	}
940	–
941	–	public static class TrackedShortRunnable implements Runnable {
942	–	public volatile boolean done = false;
943	–	public void run() {
944	–	try {
945	–	delay(SHORT_DELAY_MS);
946	–	done = true;
947	–	} catch (InterruptedException ok) {}
948	–	}
949	–	}
950	–
951	–	public static class TrackedSmallRunnable implements Runnable {
952	–	public volatile boolean done = false;
953	–	public void run() {
954	–	try {
955	–	delay(SMALL_DELAY_MS);
956	–	done = true;
957	–	} catch (InterruptedException ok) {}
958	–	}
959	–	}
960	–
961	–	public static class TrackedMediumRunnable implements Runnable {
962	–	public volatile boolean done = false;
963	–	public void run() {
964	–	try {
965	–	delay(MEDIUM_DELAY_MS);
966	–	done = true;
967	–	} catch (InterruptedException ok) {}
968	–	}
969	–	}
970	–
971	–	public static class TrackedLongRunnable implements Runnable {
972	–	public volatile boolean done = false;
973	–	public void run() {
974	–	try {
975	–	delay(LONG_DELAY_MS);
976	–	done = true;
977	–	} catch (InterruptedException ok) {}
978	–	}
979	–	}
980	–
1642		public static class TrackedNoOpRunnable implements Runnable {
1643		public volatile boolean done = false;
1644		public void run() {
#	Line 985 | Line 1646 | public class JSR166TestCase extends Test
1646		}
1647		}
1648
988	–	public static class TrackedCallable implements Callable {
989	–	public volatile boolean done = false;
990	–	public Object call() {
991	–	try {
992	–	delay(SMALL_DELAY_MS);
993	–	done = true;
994	–	} catch (InterruptedException ok) {}
995	–	return Boolean.TRUE;
996	–	}
997	–	}
998	–
1649		/**
1650		* Analog of CheckedRunnable for RecursiveAction
1651		*/
1652		public abstract class CheckedRecursiveAction extends RecursiveAction {
1653		protected abstract void realCompute() throws Throwable;
1654
1655	<	public final void compute() {
1655	>	@Override protected final void compute() {
1656		try {
1657		realCompute();
1658	<	} catch (Throwable t) {
1659	<	threadUnexpectedException(t);
1658	>	} catch (Throwable fail) {
1659	>	threadUnexpectedException(fail);
1660		}
1661		}
1662		}
#	Line 1017 | Line 1667 | public class JSR166TestCase extends Test
1667		public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1668		protected abstract T realCompute() throws Throwable;
1669
1670	<	public final T compute() {
1670	>	@Override protected final T compute() {
1671		try {
1672		return realCompute();
1673	<	} catch (Throwable t) {
1674	<	threadUnexpectedException(t);
1025	<	return null;
1673	>	} catch (Throwable fail) {
1674	>	threadUnexpectedException(fail);
1675		}
1676	+	throw new AssertionError("unreached");
1677		}
1678		}
1679
#	Line 1036 | Line 1686 | public class JSR166TestCase extends Test
1686		}
1687
1688		/**
1689	<	* A CyclicBarrier that fails with AssertionFailedErrors instead
1690	<	* of throwing checked exceptions.
1689	>	* A CyclicBarrier that uses timed await and fails with
1690	>	* AssertionErrors instead of throwing checked exceptions.
1691		*/
1692	<	public class CheckedBarrier extends CyclicBarrier {
1692	>	public static class CheckedBarrier extends CyclicBarrier {
1693		public CheckedBarrier(int parties) { super(parties); }
1694
1695		public int await() {
1696		try {
1697	<	return super.await();
1698	<	} catch (Exception e) {
1699	<	AssertionFailedError afe =
1700	<	new AssertionFailedError("Unexpected exception: " + e);
1701	<	afe.initCause(e);
1052	<	throw afe;
1697	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1698	>	} catch (TimeoutException timedOut) {
1699	>	throw new AssertionError("timed out");
1700	>	} catch (Exception fail) {
1701	>	throw new AssertionError("Unexpected exception: " + fail, fail);
1702		}
1703		}
1704		}
1705
1706	<	public void checkEmpty(BlockingQueue q) {
1706	>	void checkEmpty(BlockingQueue q) {
1707		try {
1708		assertTrue(q.isEmpty());
1709		assertEquals(0, q.size());
1710		assertNull(q.peek());
1711		assertNull(q.poll());
1712	<	assertNull(q.poll(0, MILLISECONDS));
1712	>	assertNull(q.poll(randomExpiredTimeout(), randomTimeUnit()));
1713		assertEquals(q.toString(), "[]");
1714		assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1715		assertFalse(q.iterator().hasNext());
#	Line 1076 | Line 1725 | public class JSR166TestCase extends Test
1725		q.remove();
1726		shouldThrow();
1727		} catch (NoSuchElementException success) {}
1728	<	} catch (InterruptedException ie) {
1729	<	threadUnexpectedException(ie);
1728	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1729	>	}
1730	>
1731	>	void assertSerialEquals(Object x, Object y) {
1732	>	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1733	>	}
1734	>
1735	>	void assertNotSerialEquals(Object x, Object y) {
1736	>	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1737	>	}
1738	>
1739	>	byte[] serialBytes(Object o) {
1740	>	try {
1741	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1742	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1743	>	oos.writeObject(o);
1744	>	oos.flush();
1745	>	oos.close();
1746	>	return bos.toByteArray();
1747	>	} catch (Throwable fail) {
1748	>	threadUnexpectedException(fail);
1749	>	return new byte[0];
1750	>	}
1751	>	}
1752	>
1753	>	void assertImmutable(final Object o) {
1754	>	if (o instanceof Collection) {
1755	>	assertThrows(
1756	>	UnsupportedOperationException.class,
1757	>	new Runnable() { public void run() {
1758	>	((Collection) o).add(null);}});
1759	>	}
1760	>	}
1761	>
1762	>	@SuppressWarnings("unchecked")
1763	>	<T> T serialClone(T o) {
1764	>	T clone = null;
1765	>	try {
1766	>	ObjectInputStream ois = new ObjectInputStream
1767	>	(new ByteArrayInputStream(serialBytes(o)));
1768	>	clone = (T) ois.readObject();
1769	>	} catch (Throwable fail) {
1770	>	threadUnexpectedException(fail);
1771	>	}
1772	>	if (o == clone) assertImmutable(o);
1773	>	else assertSame(o.getClass(), clone.getClass());
1774	>	return clone;
1775	>	}
1776	>
1777	>	/**
1778	>	* A version of serialClone that leaves error handling (for
1779	>	* e.g. NotSerializableException) up to the caller.
1780	>	*/
1781	>	@SuppressWarnings("unchecked")
1782	>	<T> T serialClonePossiblyFailing(T o)
1783	>	throws ReflectiveOperationException, java.io.IOException {
1784	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1785	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1786	>	oos.writeObject(o);
1787	>	oos.flush();
1788	>	oos.close();
1789	>	ObjectInputStream ois = new ObjectInputStream
1790	>	(new ByteArrayInputStream(bos.toByteArray()));
1791	>	T clone = (T) ois.readObject();
1792	>	if (o == clone) assertImmutable(o);
1793	>	else assertSame(o.getClass(), clone.getClass());
1794	>	return clone;
1795	>	}
1796	>
1797	>	/**
1798	>	* If o implements Cloneable and has a public clone method,
1799	>	* returns a clone of o, else null.
1800	>	*/
1801	>	@SuppressWarnings("unchecked")
1802	>	<T> T cloneableClone(T o) {
1803	>	if (!(o instanceof Cloneable)) return null;
1804	>	final T clone;
1805	>	try {
1806	>	clone = (T) o.getClass().getMethod("clone").invoke(o);
1807	>	} catch (NoSuchMethodException ok) {
1808	>	return null;
1809	>	} catch (ReflectiveOperationException unexpected) {
1810	>	throw new Error(unexpected);
1811	>	}
1812	>	assertNotSame(o, clone); // not 100% guaranteed by spec
1813	>	assertSame(o.getClass(), clone.getClass());
1814	>	return clone;
1815	>	}
1816	>
1817	>	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1818	>	Runnable... throwingActions) {
1819	>	for (Runnable throwingAction : throwingActions) {
1820	>	boolean threw = false;
1821	>	try { throwingAction.run(); }
1822	>	catch (Throwable t) {
1823	>	threw = true;
1824	>	if (!expectedExceptionClass.isInstance(t))
1825	>	throw new AssertionError(
1826	>	"Expected " + expectedExceptionClass.getName() +
1827	>	", got " + t.getClass().getName(),
1828	>	t);
1829	>	}
1830	>	if (!threw)
1831	>	shouldThrow(expectedExceptionClass.getName());
1832	>	}
1833	>	}
1834	>
1835	>	public void assertIteratorExhausted(Iterator<?> it) {
1836	>	try {
1837	>	it.next();
1838	>	shouldThrow();
1839	>	} catch (NoSuchElementException success) {}
1840	>	assertFalse(it.hasNext());
1841	>	}
1842	>
1843	>	public <T> Callable<T> callableThrowing(final Exception ex) {
1844	>	return new Callable<T>() { public T call() throws Exception { throw ex; }};
1845	>	}
1846	>
1847	>	public Runnable runnableThrowing(final RuntimeException ex) {
1848	>	return new Runnable() { public void run() { throw ex; }};
1849	>	}
1850	>
1851	>	/** A reusable thread pool to be shared by tests. */
1852	>	static final ExecutorService cachedThreadPool =
1853	>	new ThreadPoolExecutor(0, Integer.MAX_VALUE,
1854	>	1000L, MILLISECONDS,
1855	>	new SynchronousQueue<Runnable>());
1856	>
1857	>	static <T> void shuffle(T[] array) {
1858	>	Collections.shuffle(Arrays.asList(array), ThreadLocalRandom.current());
1859	>	}
1860	>
1861	>	/**
1862	>	* Returns the same String as would be returned by {@link
1863	>	* Object#toString}, whether or not the given object's class
1864	>	* overrides toString().
1865	>	*
1866	>	* @see System#identityHashCode
1867	>	*/
1868	>	static String identityString(Object x) {
1869	>	return x.getClass().getName()
1870	>	+ "@" + Integer.toHexString(System.identityHashCode(x));
1871	>	}
1872	>
1873	>	// --- Shared assertions for Executor tests ---
1874	>
1875	>	/**
1876	>	* Returns maximum number of tasks that can be submitted to given
1877	>	* pool (with bounded queue) before saturation (when submission
1878	>	* throws RejectedExecutionException).
1879	>	*/
1880	>	static final int saturatedSize(ThreadPoolExecutor pool) {
1881	>	BlockingQueue<Runnable> q = pool.getQueue();
1882	>	return pool.getMaximumPoolSize() + q.size() + q.remainingCapacity();
1883	>	}
1884	>
1885	>	@SuppressWarnings("FutureReturnValueIgnored")
1886	>	void assertNullTaskSubmissionThrowsNullPointerException(Executor e) {
1887	>	try {
1888	>	e.execute((Runnable) null);
1889	>	shouldThrow();
1890	>	} catch (NullPointerException success) {}
1891	>
1892	>	if (! (e instanceof ExecutorService)) return;
1893	>	ExecutorService es = (ExecutorService) e;
1894	>	try {
1895	>	es.submit((Runnable) null);
1896	>	shouldThrow();
1897	>	} catch (NullPointerException success) {}
1898	>	try {
1899	>	es.submit((Runnable) null, Boolean.TRUE);
1900	>	shouldThrow();
1901	>	} catch (NullPointerException success) {}
1902	>	try {
1903	>	es.submit((Callable) null);
1904	>	shouldThrow();
1905	>	} catch (NullPointerException success) {}
1906	>
1907	>	if (! (e instanceof ScheduledExecutorService)) return;
1908	>	ScheduledExecutorService ses = (ScheduledExecutorService) e;
1909	>	try {
1910	>	ses.schedule((Runnable) null,
1911	>	randomTimeout(), randomTimeUnit());
1912	>	shouldThrow();
1913	>	} catch (NullPointerException success) {}
1914	>	try {
1915	>	ses.schedule((Callable) null,
1916	>	randomTimeout(), randomTimeUnit());
1917	>	shouldThrow();
1918	>	} catch (NullPointerException success) {}
1919	>	try {
1920	>	ses.scheduleAtFixedRate((Runnable) null,
1921	>	randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
1922	>	shouldThrow();
1923	>	} catch (NullPointerException success) {}
1924	>	try {
1925	>	ses.scheduleWithFixedDelay((Runnable) null,
1926	>	randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
1927	>	shouldThrow();
1928	>	} catch (NullPointerException success) {}
1929	>	}
1930	>
1931	>	void setRejectedExecutionHandler(
1932	>	ThreadPoolExecutor p, RejectedExecutionHandler handler) {
1933	>	p.setRejectedExecutionHandler(handler);
1934	>	assertSame(handler, p.getRejectedExecutionHandler());
1935	>	}
1936	>
1937	>	void assertTaskSubmissionsAreRejected(ThreadPoolExecutor p) {
1938	>	final RejectedExecutionHandler savedHandler = p.getRejectedExecutionHandler();
1939	>	final long savedTaskCount = p.getTaskCount();
1940	>	final long savedCompletedTaskCount = p.getCompletedTaskCount();
1941	>	final int savedQueueSize = p.getQueue().size();
1942	>	final boolean stock = (p.getClass().getClassLoader() == null);
1943	>
1944	>	Runnable r = () -> {};
1945	>	Callable<Boolean> c = () -> Boolean.TRUE;
1946	>
1947	>	class Recorder implements RejectedExecutionHandler {
1948	>	public volatile Runnable r = null;
1949	>	public volatile ThreadPoolExecutor p = null;
1950	>	public void reset() { r = null; p = null; }
1951	>	public void rejectedExecution(Runnable r, ThreadPoolExecutor p) {
1952	>	assertNull(this.r);
1953	>	assertNull(this.p);
1954	>	this.r = r;
1955	>	this.p = p;
1956	>	}
1957	>	}
1958	>
1959	>	// check custom handler is invoked exactly once per task
1960	>	Recorder recorder = new Recorder();
1961	>	setRejectedExecutionHandler(p, recorder);
1962	>	for (int i = 2; i--> 0; ) {
1963	>	recorder.reset();
1964	>	p.execute(r);
1965	>	if (stock && p.getClass() == ThreadPoolExecutor.class)
1966	>	assertSame(r, recorder.r);
1967	>	assertSame(p, recorder.p);
1968	>
1969	>	recorder.reset();
1970	>	assertFalse(p.submit(r).isDone());
1971	>	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
1972	>	assertSame(p, recorder.p);
1973	>
1974	>	recorder.reset();
1975	>	assertFalse(p.submit(r, Boolean.TRUE).isDone());
1976	>	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
1977	>	assertSame(p, recorder.p);
1978	>
1979	>	recorder.reset();
1980	>	assertFalse(p.submit(c).isDone());
1981	>	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
1982	>	assertSame(p, recorder.p);
1983	>
1984	>	if (p instanceof ScheduledExecutorService) {
1985	>	ScheduledExecutorService s = (ScheduledExecutorService) p;
1986	>	ScheduledFuture<?> future;
1987	>
1988	>	recorder.reset();
1989	>	future = s.schedule(r, randomTimeout(), randomTimeUnit());
1990	>	assertFalse(future.isDone());
1991	>	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
1992	>	assertSame(p, recorder.p);
1993	>
1994	>	recorder.reset();
1995	>	future = s.schedule(c, randomTimeout(), randomTimeUnit());
1996	>	assertFalse(future.isDone());
1997	>	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
1998	>	assertSame(p, recorder.p);
1999	>
2000	>	recorder.reset();
2001	>	future = s.scheduleAtFixedRate(r, randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2002	>	assertFalse(future.isDone());
2003	>	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2004	>	assertSame(p, recorder.p);
2005	>
2006	>	recorder.reset();
2007	>	future = s.scheduleWithFixedDelay(r, randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2008	>	assertFalse(future.isDone());
2009	>	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2010	>	assertSame(p, recorder.p);
2011	>	}
2012	>	}
2013	>
2014	>	// Checking our custom handler above should be sufficient, but
2015	>	// we add some integration tests of standard handlers.
2016	>	final AtomicReference<Thread> thread = new AtomicReference<>();
2017	>	final Runnable setThread = () -> thread.set(Thread.currentThread());
2018	>
2019	>	setRejectedExecutionHandler(p, new ThreadPoolExecutor.AbortPolicy());
2020	>	try {
2021	>	p.execute(setThread);
2022	>	shouldThrow();
2023	>	} catch (RejectedExecutionException success) {}
2024	>	assertNull(thread.get());
2025	>
2026	>	setRejectedExecutionHandler(p, new ThreadPoolExecutor.DiscardPolicy());
2027	>	p.execute(setThread);
2028	>	assertNull(thread.get());
2029	>
2030	>	setRejectedExecutionHandler(p, new ThreadPoolExecutor.CallerRunsPolicy());
2031	>	p.execute(setThread);
2032	>	if (p.isShutdown())
2033	>	assertNull(thread.get());
2034	>	else
2035	>	assertSame(Thread.currentThread(), thread.get());
2036	>
2037	>	setRejectedExecutionHandler(p, savedHandler);
2038	>
2039	>	// check that pool was not perturbed by handlers
2040	>	assertEquals(savedTaskCount, p.getTaskCount());
2041	>	assertEquals(savedCompletedTaskCount, p.getCompletedTaskCount());
2042	>	assertEquals(savedQueueSize, p.getQueue().size());
2043	>	}
2044	>
2045	>	void assertCollectionsEquals(Collection<?> x, Collection<?> y) {
2046	>	assertEquals(x, y);
2047	>	assertEquals(y, x);
2048	>	assertEquals(x.isEmpty(), y.isEmpty());
2049	>	assertEquals(x.size(), y.size());
2050	>	if (x instanceof List) {
2051	>	assertEquals(x.toString(), y.toString());
2052	>	}
2053	>	if (x instanceof List || x instanceof Set) {
2054	>	assertEquals(x.hashCode(), y.hashCode());
2055	>	}
2056	>	if (x instanceof List || x instanceof Deque) {
2057	>	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
2058	>	assertTrue(Arrays.equals(x.toArray(new Object[0]),
2059	>	y.toArray(new Object[0])));
2060		}
2061		}
2062
2063	+	/**
2064	+	* A weaker form of assertCollectionsEquals which does not insist
2065	+	* that the two collections satisfy Object#equals(Object), since
2066	+	* they may use identity semantics as Deques do.
2067	+	*/
2068	+	void assertCollectionsEquivalent(Collection<?> x, Collection<?> y) {
2069	+	if (x instanceof List || x instanceof Set)
2070	+	assertCollectionsEquals(x, y);
2071	+	else {
2072	+	assertEquals(x.isEmpty(), y.isEmpty());
2073	+	assertEquals(x.size(), y.size());
2074	+	assertEquals(new HashSet(x), new HashSet(y));
2075	+	if (x instanceof Deque) {
2076	+	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
2077	+	assertTrue(Arrays.equals(x.toArray(new Object[0]),
2078	+	y.toArray(new Object[0])));
2079	+	}
2080	+	}
2081	+	}
2082		}

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