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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.48 by jsr166, Tue Dec 1 22:51:44 2009 UTC vs.
Revision 1.245 by jsr166, Sun Jul 22 21:19:14 2018 UTC

#	Line 1 | Line 1
1		/*
2	<	* Written by Doug Lea with assistance from members of JCP JSR-166
3	<	* Expert Group and released to the public domain, as explained at
4	<	* http://creativecommons.org/licenses/publicdomain
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.*;
12	<	import java.util.concurrent.*;
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 java.io.*;
45	<	import java.security.*;
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.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 23 | Line 117 | import java.security.*;
117		*
118		* <ol>
119		*
120	<	* <li> All assertions in code running in generated threads must use
120	>	* <li>All assertions in code running in generated threads must use
121		* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
122		* #threadAssertEquals}, or {@link #threadAssertNull}, (not
123	<	* <tt>fail</tt>, <tt>assertTrue</tt>, etc.) It is OK (but not
123	>	* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
124		* particularly recommended) for other code to use these forms too.
125		* Only the most typically used JUnit assertion methods are defined
126	<	* this way, but enough to live with.</li>
126	>	* this way, but enough to live with.
127		*
128	<	* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
129	<	* to invoke <tt>super.setUp</tt> and <tt>super.tearDown</tt> within
128	>	* <li>If you override {@link #setUp} or {@link #tearDown}, make sure
129	>	* to invoke {@code super.setUp} and {@code super.tearDown} within
130		* them. These methods are used to clear and check for thread
131	<	* assertion failures.</li>
131	>	* assertion failures.
132		*
133	<	* <li>All delays and timeouts must use one of the constants <tt>
134	<	* SHORT_DELAY_MS</tt>, <tt> SMALL_DELAY_MS</tt>, <tt> MEDIUM_DELAY_MS</tt>,
135	<	* <tt> LONG_DELAY_MS</tt>. The idea here is that a SHORT is always
133	>	* <li>All delays and timeouts must use one of the constants {@code
134	>	* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
135	>	* {@code LONG_DELAY_MS}. The idea here is that a SHORT is always
136		* discriminable from zero time, and always allows enough time for the
137		* small amounts of computation (creating a thread, calling a few
138		* methods, etc) needed to reach a timeout point. Similarly, a SMALL
139		* is always discriminable as larger than SHORT and smaller than
140		* MEDIUM.  And so on. These constants are set to conservative values,
141		* but even so, if there is ever any doubt, they can all be increased
142	<	* in one spot to rerun tests on slower platforms.</li>
142	>	* in one spot to rerun tests on slower platforms.
143		*
144	<	* <li> All threads generated must be joined inside each test case
145	<	* method (or <tt>fail</tt> to do so) before returning from the
146	<	* method. The <tt> joinPool</tt> method can be used to do this when
147	<	* using Executors.</li>
144	>	* <li>All threads generated must be joined inside each test case
145	>	* method (or {@code fail} to do so) before returning from the
146	>	* method. The {@code joinPool} method can be used to do this when
147	>	* using Executors.
148		*
149		* </ol>
150		*
151	<	* <p> <b>Other notes</b>
151	>	* <p><b>Other notes</b>
152		* <ul>
153		*
154	<	* <li> Usually, there is one testcase method per JSR166 method
154	>	* <li>Usually, there is one testcase method per JSR166 method
155		* covering "normal" operation, and then as many exception-testing
156		* methods as there are exceptions the method can throw. Sometimes
157		* there are multiple tests per JSR166 method when the different
158		* "normal" behaviors differ significantly. And sometimes testcases
159	<	* cover multiple methods when they cannot be tested in
66	<	* isolation.</li>
159	>	* cover multiple methods when they cannot be tested in isolation.
160		*
161	<	* <li> The documentation style for testcases is to provide as javadoc
161	>	* <li>The documentation style for testcases is to provide as javadoc
162		* a simple sentence or two describing the property that the testcase
163		* method purports to test. The javadocs do not say anything about how
164	<	* the property is tested. To find out, read the code.</li>
164	>	* the property is tested. To find out, read the code.
165		*
166	<	* <li> These tests are "conformance tests", and do not attempt to
166	>	* <li>These tests are "conformance tests", and do not attempt to
167		* test throughput, latency, scalability or other performance factors
168		* (see the separate "jtreg" tests for a set intended to check these
169		* for the most central aspects of functionality.) So, most tests use
170		* the smallest sensible numbers of threads, collection sizes, etc
171	<	* needed to check basic conformance.</li>
171	>	* needed to check basic conformance.
172		*
173		* <li>The test classes currently do not declare inclusion in
174		* any particular package to simplify things for people integrating
175	<	* them in TCK test suites.</li>
175	>	* them in TCK test suites.
176		*
177	<	* <li> As a convenience, the <tt>main</tt> of this class (JSR166TestCase)
178	<	* runs all JSR166 unit tests.</li>
177	>	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
178	>	* runs all JSR166 unit tests.
179		*
180		* </ul>
181		*/
182		public class JSR166TestCase extends TestCase {
183	+	private static final boolean useSecurityManager =
184	+	Boolean.getBoolean("jsr166.useSecurityManager");
185	+
186	+	protected static final boolean expensiveTests =
187	+	Boolean.getBoolean("jsr166.expensiveTests");
188	+
189	+	/**
190	+	* If true, also run tests that are not part of the official tck
191	+	* because they test unspecified implementation details.
192	+	*/
193	+	protected static final boolean testImplementationDetails =
194	+	Boolean.getBoolean("jsr166.testImplementationDetails");
195	+
196	+	/**
197	+	* If true, report on stdout all "slow" tests, that is, ones that
198	+	* take more than profileThreshold milliseconds to execute.
199	+	*/
200	+	private static final boolean profileTests =
201	+	Boolean.getBoolean("jsr166.profileTests");
202	+
203	+	/**
204	+	* The number of milliseconds that tests are permitted for
205	+	* execution without being reported, when profileTests is set.
206	+	*/
207	+	private static final long profileThreshold =
208	+	Long.getLong("jsr166.profileThreshold", 100);
209	+
210	+	/**
211	+	* The number of repetitions per test (for tickling rare bugs).
212	+	*/
213	+	private static final int runsPerTest =
214	+	Integer.getInteger("jsr166.runsPerTest", 1);
215	+
216	+	/**
217	+	* The number of repetitions of the test suite (for finding leaks?).
218	+	*/
219	+	private static final int suiteRuns =
220	+	Integer.getInteger("jsr166.suiteRuns", 1);
221	+
222	+	/**
223	+	* Returns the value of the system property, or NaN if not defined.
224	+	*/
225	+	private static float systemPropertyValue(String name) {
226	+	String floatString = System.getProperty(name);
227	+	if (floatString == null)
228	+	return Float.NaN;
229	+	try {
230	+	return Float.parseFloat(floatString);
231	+	} catch (NumberFormatException ex) {
232	+	throw new IllegalArgumentException(
233	+	String.format("Bad float value in system property %s=%s",
234	+	name, floatString));
235	+	}
236	+	}
237	+
238	+	/**
239	+	* The scaling factor to apply to standard delays used in tests.
240	+	* May be initialized from any of:
241	+	* - the "jsr166.delay.factor" system property
242	+	* - the "test.timeout.factor" system property (as used by jtreg)
243	+	*   See: http://openjdk.java.net/jtreg/tag-spec.html
244	+	* - hard-coded fuzz factor when using a known slowpoke VM
245	+	*/
246	+	private static final float delayFactor = delayFactor();
247	+
248	+	private static float delayFactor() {
249	+	float x;
250	+	if (!Float.isNaN(x = systemPropertyValue("jsr166.delay.factor")))
251	+	return x;
252	+	if (!Float.isNaN(x = systemPropertyValue("test.timeout.factor")))
253	+	return x;
254	+	String prop = System.getProperty("java.vm.version");
255	+	if (prop != null && prop.matches(".*debug.*"))
256	+	return 4.0f; // How much slower is fastdebug than product?!
257	+	return 1.0f;
258	+	}
259	+
260	+	public JSR166TestCase() { super(); }
261	+	public JSR166TestCase(String name) { super(name); }
262	+
263	+	/**
264	+	* A filter for tests to run, matching strings of the form
265	+	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
266	+	* Usefully combined with jsr166.runsPerTest.
267	+	*/
268	+	private static final Pattern methodFilter = methodFilter();
269	+
270	+	private static Pattern methodFilter() {
271	+	String regex = System.getProperty("jsr166.methodFilter");
272	+	return (regex == null) ? null : Pattern.compile(regex);
273	+	}
274	+
275	+	// Instrumentation to debug very rare, but very annoying hung test runs.
276	+	static volatile TestCase currentTestCase;
277	+	// static volatile int currentRun = 0;
278	+	static {
279	+	Runnable checkForWedgedTest = new Runnable() { public void run() {
280	+	// Avoid spurious reports with enormous runsPerTest.
281	+	// A single test case run should never take more than 1 second.
282	+	// But let's cap it at the high end too ...
283	+	final int timeoutMinutes =
284	+	Math.min(15, Math.max(runsPerTest / 60, 1));
285	+	for (TestCase lastTestCase = currentTestCase;;) {
286	+	try { MINUTES.sleep(timeoutMinutes); }
287	+	catch (InterruptedException unexpected) { break; }
288	+	if (lastTestCase == currentTestCase) {
289	+	System.err.printf(
290	+	"Looks like we're stuck running test: %s%n",
291	+	lastTestCase);
292	+	//                     System.err.printf(
293	+	//                         "Looks like we're stuck running test: %s (%d/%d)%n",
294	+	//                         lastTestCase, currentRun, runsPerTest);
295	+	//                     System.err.println("availableProcessors=" +
296	+	//                         Runtime.getRuntime().availableProcessors());
297	+	//                     System.err.printf("cpu model = %s%n", cpuModel());
298	+	dumpTestThreads();
299	+	// one stack dump is probably enough; more would be spam
300	+	break;
301	+	}
302	+	lastTestCase = currentTestCase;
303	+	}}};
304	+	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
305	+	thread.setDaemon(true);
306	+	thread.start();
307	+	}
308	+
309	+	//     public static String cpuModel() {
310	+	//         try {
311	+	//             java.util.regex.Matcher matcher
312	+	//               = Pattern.compile("model name\\s*: (.*)")
313	+	//                 .matcher(new String(
314	+	//                     java.nio.file.Files.readAllBytes(
315	+	//                         java.nio.file.Paths.get("/proc/cpuinfo")), "UTF-8"));
316	+	//             matcher.find();
317	+	//             return matcher.group(1);
318	+	//         } catch (Exception ex) { return null; }
319	+	//     }
320	+
321	+	public void runBare() throws Throwable {
322	+	currentTestCase = this;
323	+	if (methodFilter == null
324	+	|| methodFilter.matcher(toString()).find())
325	+	super.runBare();
326	+	}
327	+
328	+	protected void runTest() throws Throwable {
329	+	for (int i = 0; i < runsPerTest; i++) {
330	+	// currentRun = i;
331	+	if (profileTests)
332	+	runTestProfiled();
333	+	else
334	+	super.runTest();
335	+	}
336	+	}
337	+
338	+	protected void runTestProfiled() throws Throwable {
339	+	for (int i = 0; i < 2; i++) {
340	+	long startTime = System.nanoTime();
341	+	super.runTest();
342	+	long elapsedMillis = millisElapsedSince(startTime);
343	+	if (elapsedMillis < profileThreshold)
344	+	break;
345	+	// Never report first run of any test; treat it as a
346	+	// warmup run, notably to trigger all needed classloading,
347	+	if (i > 0)
348	+	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
349	+	}
350	+	}
351	+
352		/**
353	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
353	>	* Runs all JSR166 unit tests using junit.textui.TestRunner.
354		*/
355		public static void main(String[] args) {
356	<	int iters = 1;
357	<	if (args.length > 0)
358	<	iters = Integer.parseInt(args[0]);
359	<	Test s = suite();
360	<	for (int i = 0; i < iters; ++i) {
361	<	junit.textui.TestRunner.run(s);
356	>	main(suite(), args);
357	>	}
358	>
359	>	static class PithyResultPrinter extends junit.textui.ResultPrinter {
360	>	PithyResultPrinter(java.io.PrintStream writer) { super(writer); }
361	>	long runTime;
362	>	public void startTest(Test test) {}
363	>	protected void printHeader(long runTime) {
364	>	this.runTime = runTime; // defer printing for later
365	>	}
366	>	protected void printFooter(TestResult result) {
367	>	if (result.wasSuccessful()) {
368	>	getWriter().println("OK (" + result.runCount() + " tests)"
369	>	+ "  Time: " + elapsedTimeAsString(runTime));
370	>	} else {
371	>	getWriter().println("Time: " + elapsedTimeAsString(runTime));
372	>	super.printFooter(result);
373	>	}
374	>	}
375	>	}
376	>
377	>	/**
378	>	* Returns a TestRunner that doesn't bother with unnecessary
379	>	* fluff, like printing a "." for each test case.
380	>	*/
381	>	static junit.textui.TestRunner newPithyTestRunner() {
382	>	junit.textui.TestRunner runner = new junit.textui.TestRunner();
383	>	runner.setPrinter(new PithyResultPrinter(System.out));
384	>	return runner;
385	>	}
386	>
387	>	/**
388	>	* Runs all unit tests in the given test suite.
389	>	* Actual behavior influenced by jsr166.* system properties.
390	>	*/
391	>	static void main(Test suite, String[] args) {
392	>	if (useSecurityManager) {
393	>	System.err.println("Setting a permissive security manager");
394	>	Policy.setPolicy(permissivePolicy());
395	>	System.setSecurityManager(new SecurityManager());
396	>	}
397	>	for (int i = 0; i < suiteRuns; i++) {
398	>	TestResult result = newPithyTestRunner().doRun(suite);
399	>	if (!result.wasSuccessful())
400	>	System.exit(1);
401		System.gc();
402		System.runFinalization();
403		}
103	–	System.exit(0);
404		}
405
406	+	public static TestSuite newTestSuite(Object... suiteOrClasses) {
407	+	TestSuite suite = new TestSuite();
408	+	for (Object suiteOrClass : suiteOrClasses) {
409	+	if (suiteOrClass instanceof TestSuite)
410	+	suite.addTest((TestSuite) suiteOrClass);
411	+	else if (suiteOrClass instanceof Class)
412	+	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
413	+	else
414	+	throw new ClassCastException("not a test suite or class");
415	+	}
416	+	return suite;
417	+	}
418	+
419	+	public static void addNamedTestClasses(TestSuite suite,
420	+	String... testClassNames) {
421	+	for (String testClassName : testClassNames) {
422	+	try {
423	+	Class<?> testClass = Class.forName(testClassName);
424	+	Method m = testClass.getDeclaredMethod("suite");
425	+	suite.addTest(newTestSuite((Test)m.invoke(null)));
426	+	} catch (ReflectiveOperationException e) {
427	+	throw new AssertionError("Missing test class", e);
428	+	}
429	+	}
430	+	}
431	+
432	+	public static final double JAVA_CLASS_VERSION;
433	+	public static final String JAVA_SPECIFICATION_VERSION;
434	+	static {
435	+	try {
436	+	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
437	+	new java.security.PrivilegedAction<Double>() {
438	+	public Double run() {
439	+	return Double.valueOf(System.getProperty("java.class.version"));}});
440	+	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
441	+	new java.security.PrivilegedAction<String>() {
442	+	public String run() {
443	+	return System.getProperty("java.specification.version");}});
444	+	} catch (Throwable t) {
445	+	throw new Error(t);
446	+	}
447	+	}
448	+
449	+	public static boolean atLeastJava6()  { return JAVA_CLASS_VERSION >= 50.0; }
450	+	public static boolean atLeastJava7()  { return JAVA_CLASS_VERSION >= 51.0; }
451	+	public static boolean atLeastJava8()  { return JAVA_CLASS_VERSION >= 52.0; }
452	+	public static boolean atLeastJava9()  { return JAVA_CLASS_VERSION >= 53.0; }
453	+	public static boolean atLeastJava10() { return JAVA_CLASS_VERSION >= 54.0; }
454	+	public static boolean atLeastJava11() { return JAVA_CLASS_VERSION >= 55.0; }
455	+
456		/**
457	<	* Collects all JSR166 unit tests as one suite
457	>	* Collects all JSR166 unit tests as one suite.
458		*/
459		public static Test suite() {
460	<	TestSuite suite = new TestSuite("JSR166 Unit Tests");
461	<
462	<	suite.addTest(new TestSuite(ForkJoinPoolTest.class));
463	<	suite.addTest(new TestSuite(ForkJoinTaskTest.class));
464	<	suite.addTest(new TestSuite(RecursiveActionTest.class));
465	<	suite.addTest(new TestSuite(RecursiveTaskTest.class));
466	<	suite.addTest(new TestSuite(LinkedTransferQueueTest.class));
467	<	suite.addTest(new TestSuite(PhaserTest.class));
468	<	suite.addTest(new TestSuite(ThreadLocalRandomTest.class));
469	<	suite.addTest(new TestSuite(AbstractExecutorServiceTest.class));
470	<	suite.addTest(new TestSuite(AbstractQueueTest.class));
471	<	suite.addTest(new TestSuite(AbstractQueuedSynchronizerTest.class));
472	<	suite.addTest(new TestSuite(AbstractQueuedLongSynchronizerTest.class));
473	<	suite.addTest(new TestSuite(ArrayBlockingQueueTest.class));
474	<	suite.addTest(new TestSuite(ArrayDequeTest.class));
475	<	suite.addTest(new TestSuite(AtomicBooleanTest.class));
476	<	suite.addTest(new TestSuite(AtomicIntegerArrayTest.class));
477	<	suite.addTest(new TestSuite(AtomicIntegerFieldUpdaterTest.class));
478	<	suite.addTest(new TestSuite(AtomicIntegerTest.class));
479	<	suite.addTest(new TestSuite(AtomicLongArrayTest.class));
480	<	suite.addTest(new TestSuite(AtomicLongFieldUpdaterTest.class));
481	<	suite.addTest(new TestSuite(AtomicLongTest.class));
482	<	suite.addTest(new TestSuite(AtomicMarkableReferenceTest.class));
483	<	suite.addTest(new TestSuite(AtomicReferenceArrayTest.class));
484	<	suite.addTest(new TestSuite(AtomicReferenceFieldUpdaterTest.class));
485	<	suite.addTest(new TestSuite(AtomicReferenceTest.class));
486	<	suite.addTest(new TestSuite(AtomicStampedReferenceTest.class));
487	<	suite.addTest(new TestSuite(ConcurrentHashMapTest.class));
488	<	suite.addTest(new TestSuite(ConcurrentLinkedQueueTest.class));
489	<	suite.addTest(new TestSuite(ConcurrentSkipListMapTest.class));
490	<	suite.addTest(new TestSuite(ConcurrentSkipListSubMapTest.class));
491	<	suite.addTest(new TestSuite(ConcurrentSkipListSetTest.class));
492	<	suite.addTest(new TestSuite(ConcurrentSkipListSubSetTest.class));
493	<	suite.addTest(new TestSuite(CopyOnWriteArrayListTest.class));
494	<	suite.addTest(new TestSuite(CopyOnWriteArraySetTest.class));
495	<	suite.addTest(new TestSuite(CountDownLatchTest.class));
496	<	suite.addTest(new TestSuite(CyclicBarrierTest.class));
497	<	suite.addTest(new TestSuite(DelayQueueTest.class));
498	<	suite.addTest(new TestSuite(EntryTest.class));
499	<	suite.addTest(new TestSuite(ExchangerTest.class));
500	<	suite.addTest(new TestSuite(ExecutorsTest.class));
501	<	suite.addTest(new TestSuite(ExecutorCompletionServiceTest.class));
502	<	suite.addTest(new TestSuite(FutureTaskTest.class));
503	<	suite.addTest(new TestSuite(LinkedBlockingDequeTest.class));
504	<	suite.addTest(new TestSuite(LinkedBlockingQueueTest.class));
505	<	suite.addTest(new TestSuite(LinkedListTest.class));
506	<	suite.addTest(new TestSuite(LockSupportTest.class));
507	<	suite.addTest(new TestSuite(PriorityBlockingQueueTest.class));
508	<	suite.addTest(new TestSuite(PriorityQueueTest.class));
509	<	suite.addTest(new TestSuite(ReentrantLockTest.class));
510	<	suite.addTest(new TestSuite(ReentrantReadWriteLockTest.class));
511	<	suite.addTest(new TestSuite(ScheduledExecutorTest.class));
512	<	suite.addTest(new TestSuite(ScheduledExecutorSubclassTest.class));
513	<	suite.addTest(new TestSuite(SemaphoreTest.class));
514	<	suite.addTest(new TestSuite(SynchronousQueueTest.class));
515	<	suite.addTest(new TestSuite(SystemTest.class));
516	<	suite.addTest(new TestSuite(ThreadLocalTest.class));
517	<	suite.addTest(new TestSuite(ThreadPoolExecutorTest.class));
518	<	suite.addTest(new TestSuite(ThreadPoolExecutorSubclassTest.class));
519	<	suite.addTest(new TestSuite(ThreadTest.class));
520	<	suite.addTest(new TestSuite(TimeUnitTest.class));
521	<	suite.addTest(new TestSuite(TreeMapTest.class));
522	<	suite.addTest(new TestSuite(TreeSetTest.class));
523	<	suite.addTest(new TestSuite(TreeSubMapTest.class));
524	<	suite.addTest(new TestSuite(TreeSubSetTest.class));
460	>	// Java7+ test classes
461	>	TestSuite suite = newTestSuite(
462	>	ForkJoinPoolTest.suite(),
463	>	ForkJoinTaskTest.suite(),
464	>	RecursiveActionTest.suite(),
465	>	RecursiveTaskTest.suite(),
466	>	LinkedTransferQueueTest.suite(),
467	>	PhaserTest.suite(),
468	>	ThreadLocalRandomTest.suite(),
469	>	AbstractExecutorServiceTest.suite(),
470	>	AbstractQueueTest.suite(),
471	>	AbstractQueuedSynchronizerTest.suite(),
472	>	AbstractQueuedLongSynchronizerTest.suite(),
473	>	ArrayBlockingQueueTest.suite(),
474	>	ArrayDequeTest.suite(),
475	>	ArrayListTest.suite(),
476	>	AtomicBooleanTest.suite(),
477	>	AtomicIntegerArrayTest.suite(),
478	>	AtomicIntegerFieldUpdaterTest.suite(),
479	>	AtomicIntegerTest.suite(),
480	>	AtomicLongArrayTest.suite(),
481	>	AtomicLongFieldUpdaterTest.suite(),
482	>	AtomicLongTest.suite(),
483	>	AtomicMarkableReferenceTest.suite(),
484	>	AtomicReferenceArrayTest.suite(),
485	>	AtomicReferenceFieldUpdaterTest.suite(),
486	>	AtomicReferenceTest.suite(),
487	>	AtomicStampedReferenceTest.suite(),
488	>	ConcurrentHashMapTest.suite(),
489	>	ConcurrentLinkedDequeTest.suite(),
490	>	ConcurrentLinkedQueueTest.suite(),
491	>	ConcurrentSkipListMapTest.suite(),
492	>	ConcurrentSkipListSubMapTest.suite(),
493	>	ConcurrentSkipListSetTest.suite(),
494	>	ConcurrentSkipListSubSetTest.suite(),
495	>	CopyOnWriteArrayListTest.suite(),
496	>	CopyOnWriteArraySetTest.suite(),
497	>	CountDownLatchTest.suite(),
498	>	CountedCompleterTest.suite(),
499	>	CyclicBarrierTest.suite(),
500	>	DelayQueueTest.suite(),
501	>	EntryTest.suite(),
502	>	ExchangerTest.suite(),
503	>	ExecutorsTest.suite(),
504	>	ExecutorCompletionServiceTest.suite(),
505	>	FutureTaskTest.suite(),
506	>	LinkedBlockingDequeTest.suite(),
507	>	LinkedBlockingQueueTest.suite(),
508	>	LinkedListTest.suite(),
509	>	LockSupportTest.suite(),
510	>	PriorityBlockingQueueTest.suite(),
511	>	PriorityQueueTest.suite(),
512	>	ReentrantLockTest.suite(),
513	>	ReentrantReadWriteLockTest.suite(),
514	>	ScheduledExecutorTest.suite(),
515	>	ScheduledExecutorSubclassTest.suite(),
516	>	SemaphoreTest.suite(),
517	>	SynchronousQueueTest.suite(),
518	>	SystemTest.suite(),
519	>	ThreadLocalTest.suite(),
520	>	ThreadPoolExecutorTest.suite(),
521	>	ThreadPoolExecutorSubclassTest.suite(),
522	>	ThreadTest.suite(),
523	>	TimeUnitTest.suite(),
524	>	TreeMapTest.suite(),
525	>	TreeSetTest.suite(),
526	>	TreeSubMapTest.suite(),
527	>	TreeSubSetTest.suite(),
528	>	VectorTest.suite());
529	>
530	>	// Java8+ test classes
531	>	if (atLeastJava8()) {
532	>	String[] java8TestClassNames = {
533	>	"ArrayDeque8Test",
534	>	"Atomic8Test",
535	>	"CompletableFutureTest",
536	>	"ConcurrentHashMap8Test",
537	>	"CountedCompleter8Test",
538	>	"DoubleAccumulatorTest",
539	>	"DoubleAdderTest",
540	>	"ForkJoinPool8Test",
541	>	"ForkJoinTask8Test",
542	>	"HashMapTest",
543	>	"LinkedBlockingDeque8Test",
544	>	"LinkedBlockingQueue8Test",
545	>	"LongAccumulatorTest",
546	>	"LongAdderTest",
547	>	"SplittableRandomTest",
548	>	"StampedLockTest",
549	>	"SubmissionPublisherTest",
550	>	"ThreadLocalRandom8Test",
551	>	"TimeUnit8Test",
552	>	};
553	>	addNamedTestClasses(suite, java8TestClassNames);
554	>	}
555	>
556	>	// Java9+ test classes
557	>	if (atLeastJava9()) {
558	>	String[] java9TestClassNames = {
559	>	"AtomicBoolean9Test",
560	>	"AtomicInteger9Test",
561	>	"AtomicIntegerArray9Test",
562	>	"AtomicLong9Test",
563	>	"AtomicLongArray9Test",
564	>	"AtomicReference9Test",
565	>	"AtomicReferenceArray9Test",
566	>	"ExecutorCompletionService9Test",
567	>	"ForkJoinPool9Test",
568	>	};
569	>	addNamedTestClasses(suite, java9TestClassNames);
570	>	}
571
572		return suite;
573		}
574
575	+	/** Returns list of junit-style test method names in given class. */
576	+	public static ArrayList<String> testMethodNames(Class<?> testClass) {
577	+	Method[] methods = testClass.getDeclaredMethods();
578	+	ArrayList<String> names = new ArrayList<>(methods.length);
579	+	for (Method method : methods) {
580	+	if (method.getName().startsWith("test")
581	+	&& Modifier.isPublic(method.getModifiers())
582	+	// method.getParameterCount() requires jdk8+
583	+	&& method.getParameterTypes().length == 0) {
584	+	names.add(method.getName());
585	+	}
586	+	}
587	+	return names;
588	+	}
589	+
590	+	/**
591	+	* Returns junit-style testSuite for the given test class, but
592	+	* parameterized by passing extra data to each test.
593	+	*/
594	+	public static <ExtraData> Test parameterizedTestSuite
595	+	(Class<? extends JSR166TestCase> testClass,
596	+	Class<ExtraData> dataClass,
597	+	ExtraData data) {
598	+	try {
599	+	TestSuite suite = new TestSuite();
600	+	Constructor c =
601	+	testClass.getDeclaredConstructor(dataClass, String.class);
602	+	for (String methodName : testMethodNames(testClass))
603	+	suite.addTest((Test) c.newInstance(data, methodName));
604	+	return suite;
605	+	} catch (ReflectiveOperationException e) {
606	+	throw new AssertionError(e);
607	+	}
608	+	}
609	+
610	+	/**
611	+	* Returns junit-style testSuite for the jdk8 extension of the
612	+	* given test class, but parameterized by passing extra data to
613	+	* each test.  Uses reflection to allow compilation in jdk7.
614	+	*/
615	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
616	+	(Class<? extends JSR166TestCase> testClass,
617	+	Class<ExtraData> dataClass,
618	+	ExtraData data) {
619	+	if (atLeastJava8()) {
620	+	String name = testClass.getName();
621	+	String name8 = name.replaceAll("Test$", "8Test");
622	+	if (name.equals(name8)) throw new AssertionError(name);
623	+	try {
624	+	return (Test)
625	+	Class.forName(name8)
626	+	.getMethod("testSuite", dataClass)
627	+	.invoke(null, data);
628	+	} catch (ReflectiveOperationException e) {
629	+	throw new AssertionError(e);
630	+	}
631	+	} else {
632	+	return new TestSuite();
633	+	}
634	+	}
635	+
636	+	// Delays for timing-dependent tests, in milliseconds.
637
638		public static long SHORT_DELAY_MS;
639		public static long SMALL_DELAY_MS;
640		public static long MEDIUM_DELAY_MS;
641		public static long LONG_DELAY_MS;
642
643	+	private static final long RANDOM_TIMEOUT;
644	+	private static final long RANDOM_EXPIRED_TIMEOUT;
645	+	private static final TimeUnit RANDOM_TIMEUNIT;
646	+	static {
647	+	ThreadLocalRandom rnd = ThreadLocalRandom.current();
648	+	long[] timeouts = { Long.MIN_VALUE, -1, 0, 1, Long.MAX_VALUE };
649	+	RANDOM_TIMEOUT = timeouts[rnd.nextInt(timeouts.length)];
650	+	RANDOM_EXPIRED_TIMEOUT = timeouts[rnd.nextInt(3)];
651	+	TimeUnit[] timeUnits = TimeUnit.values();
652	+	RANDOM_TIMEUNIT = timeUnits[rnd.nextInt(timeUnits.length)];
653	+	}
654
655		/**
656	<	* Returns the shortest timed delay. This could
657	<	* be reimplemented to use for example a Property.
656	>	* Returns a timeout for use when any value at all will do.
657	>	*/
658	>	static long randomTimeout() { return RANDOM_TIMEOUT; }
659	>
660	>	/**
661	>	* Returns a timeout that means "no waiting", i.e. not positive.
662	>	*/
663	>	static long randomExpiredTimeout() { return RANDOM_EXPIRED_TIMEOUT; }
664	>
665	>	/**
666	>	* Returns a random non-null TimeUnit.
667	>	*/
668	>	static TimeUnit randomTimeUnit() { return RANDOM_TIMEUNIT; }
669	>
670	>	/**
671	>	* Returns the shortest timed delay. This can be scaled up for
672	>	* slow machines using the jsr166.delay.factor system property,
673	>	* or via jtreg's -timeoutFactor: flag.
674	>	* http://openjdk.java.net/jtreg/command-help.html
675		*/
676		protected long getShortDelay() {
677	<	return 50;
677	>	return (long) (50 * delayFactor);
678		}
679
194	–
680		/**
681		* Sets delays as multiples of SHORT_DELAY.
682		*/
683		protected void setDelays() {
684		SHORT_DELAY_MS = getShortDelay();
685	<	SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
685	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
686		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
687	<	LONG_DELAY_MS = SHORT_DELAY_MS * 50;
687	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
688	>	}
689	>
690	>	private static final long TIMEOUT_DELAY_MS
691	>	= (long) (12.0 * Math.cbrt(delayFactor));
692	>
693	>	/**
694	>	* Returns a timeout in milliseconds to be used in tests that verify
695	>	* that operations block or time out.  We want this to be longer
696	>	* than the OS scheduling quantum, but not too long, so don't scale
697	>	* linearly with delayFactor; we use "crazy" cube root instead.
698	>	*/
699	>	static long timeoutMillis() {
700	>	return TIMEOUT_DELAY_MS;
701	>	}
702	>
703	>	/**
704	>	* Returns a new Date instance representing a time at least
705	>	* delayMillis milliseconds in the future.
706	>	*/
707	>	Date delayedDate(long delayMillis) {
708	>	// Add 1 because currentTimeMillis is known to round into the past.
709	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
710		}
711
712		/**
713	<	* Flag set true if any threadAssert methods fail
713	>	* The first exception encountered if any threadAssertXXX method fails.
714		*/
715	<	volatile boolean threadFailed;
715	>	private final AtomicReference<Throwable> threadFailure
716	>	= new AtomicReference<>(null);
717
718		/**
719	<	* Initializes test to indicate that no thread assertions have failed
719	>	* Records an exception so that it can be rethrown later in the test
720	>	* harness thread, triggering a test case failure.  Only the first
721	>	* failure is recorded; subsequent calls to this method from within
722	>	* the same test have no effect.
723		*/
724	+	public void threadRecordFailure(Throwable t) {
725	+	System.err.println(t);
726	+	dumpTestThreads();
727	+	threadFailure.compareAndSet(null, t);
728	+	}
729	+
730		public void setUp() {
731		setDelays();
732	<	threadFailed = false;
732	>	}
733	>
734	>	void tearDownFail(String format, Object... args) {
735	>	String msg = toString() + ": " + String.format(format, args);
736	>	System.err.println(msg);
737	>	dumpTestThreads();
738	>	throw new AssertionError(msg);
739		}
740
741		/**
742	<	* Triggers test case failure if any thread assertions have failed
743	<	*/
744	<	public void tearDown() {
745	<	assertFalse(threadFailed);
742	>	* Extra checks that get done for all test cases.
743	>	*
744	>	* Triggers test case failure if any thread assertions have failed,
745	>	* by rethrowing, in the test harness thread, any exception recorded
746	>	* earlier by threadRecordFailure.
747	>	*
748	>	* Triggers test case failure if interrupt status is set in the main thread.
749	>	*/
750	>	public void tearDown() throws Exception {
751	>	Throwable t = threadFailure.getAndSet(null);
752	>	if (t != null) {
753	>	if (t instanceof Error)
754	>	throw (Error) t;
755	>	else if (t instanceof RuntimeException)
756	>	throw (RuntimeException) t;
757	>	else if (t instanceof Exception)
758	>	throw (Exception) t;
759	>	else
760	>	throw new AssertionError(t.toString(), t);
761	>	}
762	>
763	>	if (Thread.interrupted())
764	>	tearDownFail("interrupt status set in main thread");
765	>
766	>	checkForkJoinPoolThreadLeaks();
767	>	}
768	>
769	>	/**
770	>	* Finds missing PoolCleaners
771	>	*/
772	>	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
773	>	Thread[] survivors = new Thread[7];
774	>	int count = Thread.enumerate(survivors);
775	>	for (int i = 0; i < count; i++) {
776	>	Thread thread = survivors[i];
777	>	String name = thread.getName();
778	>	if (name.startsWith("ForkJoinPool-")) {
779	>	// give thread some time to terminate
780	>	thread.join(LONG_DELAY_MS);
781	>	if (thread.isAlive())
782	>	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
783	>	thread);
784	>	}
785	>	}
786	>
787	>	if (!ForkJoinPool.commonPool()
788	>	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
789	>	tearDownFail("ForkJoin common pool thread stuck");
790		}
791
792		/**
793	<	* Fail, also setting status to indicate current testcase should fail
793	>	* Just like fail(reason), but additionally recording (using
794	>	* threadRecordFailure) any AssertionError thrown, so that the
795	>	* current testcase will fail.
796		*/
797		public void threadFail(String reason) {
798	<	threadFailed = true;
799	<	fail(reason);
798	>	try {
799	>	fail(reason);
800	>	} catch (AssertionError fail) {
801	>	threadRecordFailure(fail);
802	>	throw fail;
803	>	}
804		}
805
806		/**
807	<	* If expression not true, set status to indicate current testcase
808	<	* should fail
807	>	* Just like assertTrue(b), but additionally recording (using
808	>	* threadRecordFailure) any AssertionError thrown, so that the
809	>	* current testcase will fail.
810		*/
811		public void threadAssertTrue(boolean b) {
812	<	if (!b) {
239	<	threadFailed = true;
812	>	try {
813		assertTrue(b);
814	+	} catch (AssertionError fail) {
815	+	threadRecordFailure(fail);
816	+	throw fail;
817		}
818		}
819
820		/**
821	<	* If expression not false, set status to indicate current testcase
822	<	* should fail
821	>	* Just like assertFalse(b), but additionally recording (using
822	>	* threadRecordFailure) any AssertionError thrown, so that the
823	>	* current testcase will fail.
824		*/
825		public void threadAssertFalse(boolean b) {
826	<	if (b) {
250	<	threadFailed = true;
826	>	try {
827		assertFalse(b);
828	+	} catch (AssertionError fail) {
829	+	threadRecordFailure(fail);
830	+	throw fail;
831		}
832		}
833
834		/**
835	<	* If argument not null, set status to indicate current testcase
836	<	* should fail
835	>	* Just like assertNull(x), but additionally recording (using
836	>	* threadRecordFailure) any AssertionError thrown, so that the
837	>	* current testcase will fail.
838		*/
839		public void threadAssertNull(Object x) {
840	<	if (x != null) {
261	<	threadFailed = true;
840	>	try {
841		assertNull(x);
842	+	} catch (AssertionError fail) {
843	+	threadRecordFailure(fail);
844	+	throw fail;
845		}
846		}
847
848		/**
849	<	* If arguments not equal, set status to indicate current testcase
850	<	* should fail
849	>	* Just like assertEquals(x, y), but additionally recording (using
850	>	* threadRecordFailure) any AssertionError thrown, so that the
851	>	* current testcase will fail.
852		*/
853		public void threadAssertEquals(long x, long y) {
854	<	if (x != y) {
272	<	threadFailed = true;
854	>	try {
855		assertEquals(x, y);
856	+	} catch (AssertionError fail) {
857	+	threadRecordFailure(fail);
858	+	throw fail;
859		}
860		}
861
862		/**
863	<	* If arguments not equal, set status to indicate current testcase
864	<	* should fail
863	>	* Just like assertEquals(x, y), but additionally recording (using
864	>	* threadRecordFailure) any AssertionError thrown, so that the
865	>	* current testcase will fail.
866		*/
867		public void threadAssertEquals(Object x, Object y) {
868	<	if (x != y && (x == null || !x.equals(y))) {
283	<	threadFailed = true;
868	>	try {
869		assertEquals(x, y);
870	+	} catch (AssertionError fail) {
871	+	threadRecordFailure(fail);
872	+	throw fail;
873	+	} catch (Throwable fail) {
874	+	threadUnexpectedException(fail);
875		}
876		}
877
878		/**
879	<	* threadFail with message "should throw exception"
879	>	* Just like assertSame(x, y), but additionally recording (using
880	>	* threadRecordFailure) any AssertionError thrown, so that the
881	>	* current testcase will fail.
882	>	*/
883	>	public void threadAssertSame(Object x, Object y) {
884	>	try {
885	>	assertSame(x, y);
886	>	} catch (AssertionError fail) {
887	>	threadRecordFailure(fail);
888	>	throw fail;
889	>	}
890	>	}
891	>
892	>	/**
893	>	* Calls threadFail with message "should throw exception".
894		*/
895		public void threadShouldThrow() {
896	<	threadFailed = true;
293	<	fail("should throw exception");
896	>	threadFail("should throw exception");
897		}
898
899		/**
900	<	* threadFail with message "should throw" + exceptionName
900	>	* Calls threadFail with message "should throw" + exceptionName.
901		*/
902		public void threadShouldThrow(String exceptionName) {
903	<	threadFailed = true;
904	<	fail("should throw " + exceptionName);
903	>	threadFail("should throw " + exceptionName);
904	>	}
905	>
906	>	/**
907	>	* Records the given exception using {@link #threadRecordFailure},
908	>	* then rethrows the exception, wrapping it in an AssertionError
909	>	* if necessary.
910	>	*/
911	>	public void threadUnexpectedException(Throwable t) {
912	>	threadRecordFailure(t);
913	>	t.printStackTrace();
914	>	if (t instanceof RuntimeException)
915	>	throw (RuntimeException) t;
916	>	else if (t instanceof Error)
917	>	throw (Error) t;
918	>	else
919	>	throw new AssertionError("unexpected exception: " + t, t);
920	>	}
921	>
922	>	/**
923	>	* Delays, via Thread.sleep, for the given millisecond delay, but
924	>	* if the sleep is shorter than specified, may re-sleep or yield
925	>	* until time elapses.  Ensures that the given time, as measured
926	>	* by System.nanoTime(), has elapsed.
927	>	*/
928	>	static void delay(long millis) throws InterruptedException {
929	>	long nanos = millis * (1000 * 1000);
930	>	final long wakeupTime = System.nanoTime() + nanos;
931	>	do {
932	>	if (millis > 0L)
933	>	Thread.sleep(millis);
934	>	else // too short to sleep
935	>	Thread.yield();
936	>	nanos = wakeupTime - System.nanoTime();
937	>	millis = nanos / (1000 * 1000);
938	>	} while (nanos >= 0L);
939		}
940
941		/**
942	<	* threadFail with message "Unexpected exception"
942	>	* Allows use of try-with-resources with per-test thread pools.
943		*/
944	<	public void threadUnexpectedException() {
945	<	threadFailed = true;
946	<	fail("Unexpected exception");
944	>	class PoolCleaner implements AutoCloseable {
945	>	private final ExecutorService pool;
946	>	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
947	>	public void close() { joinPool(pool); }
948		}
949
950		/**
951	<	* threadFail with message "Unexpected exception", with argument
951	>	* An extension of PoolCleaner that has an action to release the pool.
952		*/
953	<	public void threadUnexpectedException(Throwable ex) {
954	<	threadFailed = true;
955	<	ex.printStackTrace();
956	<	fail("Unexpected exception: " + ex);
953	>	class PoolCleanerWithReleaser extends PoolCleaner {
954	>	private final Runnable releaser;
955	>	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
956	>	super(pool);
957	>	this.releaser = releaser;
958	>	}
959	>	public void close() {
960	>	try {
961	>	releaser.run();
962	>	} finally {
963	>	super.close();
964	>	}
965	>	}
966	>	}
967	>
968	>	PoolCleaner cleaner(ExecutorService pool) {
969	>	return new PoolCleaner(pool);
970	>	}
971	>
972	>	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
973	>	return new PoolCleanerWithReleaser(pool, releaser);
974	>	}
975	>
976	>	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
977	>	return new PoolCleanerWithReleaser(pool, releaser(latch));
978	>	}
979	>
980	>	Runnable releaser(final CountDownLatch latch) {
981	>	return new Runnable() { public void run() {
982	>	do { latch.countDown(); }
983	>	while (latch.getCount() > 0);
984	>	}};
985	>	}
986	>
987	>	PoolCleaner cleaner(ExecutorService pool, AtomicBoolean flag) {
988	>	return new PoolCleanerWithReleaser(pool, releaser(flag));
989	>	}
990	>
991	>	Runnable releaser(final AtomicBoolean flag) {
992	>	return new Runnable() { public void run() { flag.set(true); }};
993		}
994
995		/**
996	<	* Wait out termination of a thread pool or fail doing so
996	>	* Waits out termination of a thread pool or fails doing so.
997		*/
998	<	public void joinPool(ExecutorService exec) {
998	>	void joinPool(ExecutorService pool) {
999		try {
1000	<	exec.shutdown();
1001	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
1000	>	pool.shutdown();
1001	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
1002	>	try {
1003	>	threadFail("ExecutorService " + pool +
1004	>	" did not terminate in a timely manner");
1005	>	} finally {
1006	>	// last resort, for the benefit of subsequent tests
1007	>	pool.shutdownNow();
1008	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
1009	>	}
1010	>	}
1011		} catch (SecurityException ok) {
1012		// Allowed in case test doesn't have privs
1013	<	} catch (InterruptedException ie) {
1014	<	fail("Unexpected InterruptedException");
1013	>	} catch (InterruptedException fail) {
1014	>	threadFail("Unexpected InterruptedException");
1015		}
1016		}
1017
1018	+	/**
1019	+	* Like Runnable, but with the freedom to throw anything.
1020	+	* junit folks had the same idea:
1021	+	* http://junit.org/junit5/docs/snapshot/api/org/junit/gen5/api/Executable.html
1022	+	*/
1023	+	interface Action { public void run() throws Throwable; }
1024
1025		/**
1026	<	* fail with message "should throw exception"
1026	>	* Runs all the given actions in parallel, failing if any fail.
1027	>	* Useful for running multiple variants of tests that are
1028	>	* necessarily individually slow because they must block.
1029		*/
1030	<	public void shouldThrow() {
1031	<	fail("Should throw exception");
1030	>	void testInParallel(Action ... actions) {
1031	>	ExecutorService pool = Executors.newCachedThreadPool();
1032	>	try (PoolCleaner cleaner = cleaner(pool)) {
1033	>	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
1034	>	for (final Action action : actions)
1035	>	futures.add(pool.submit(new CheckedRunnable() {
1036	>	public void realRun() throws Throwable { action.run();}}));
1037	>	for (Future<?> future : futures)
1038	>	try {
1039	>	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
1040	>	} catch (ExecutionException ex) {
1041	>	threadUnexpectedException(ex.getCause());
1042	>	} catch (Exception ex) {
1043	>	threadUnexpectedException(ex);
1044	>	}
1045	>	}
1046		}
1047
1048		/**
1049	<	* fail with message "should throw " + exceptionName
1049	>	* A debugging tool to print stack traces of most threads, as jstack does.
1050	>	* Uninteresting threads are filtered out.
1051		*/
1052	<	public void shouldThrow(String exceptionName) {
1053	<	fail("Should throw " + exceptionName);
1052	>	static void dumpTestThreads() {
1053	>	SecurityManager sm = System.getSecurityManager();
1054	>	if (sm != null) {
1055	>	try {
1056	>	System.setSecurityManager(null);
1057	>	} catch (SecurityException giveUp) {
1058	>	return;
1059	>	}
1060	>	}
1061	>
1062	>	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
1063	>	System.err.println("------ stacktrace dump start ------");
1064	>	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
1065	>	final String name = info.getThreadName();
1066	>	String lockName;
1067	>	if ("Signal Dispatcher".equals(name))
1068	>	continue;
1069	>	if ("Reference Handler".equals(name)
1070	>	&& (lockName = info.getLockName()) != null
1071	>	&& lockName.startsWith("java.lang.ref.Reference$Lock"))
1072	>	continue;
1073	>	if ("Finalizer".equals(name)
1074	>	&& (lockName = info.getLockName()) != null
1075	>	&& lockName.startsWith("java.lang.ref.ReferenceQueue$Lock"))
1076	>	continue;
1077	>	if ("checkForWedgedTest".equals(name))
1078	>	continue;
1079	>	System.err.print(info);
1080	>	}
1081	>	System.err.println("------ stacktrace dump end ------");
1082	>
1083	>	if (sm != null) System.setSecurityManager(sm);
1084		}
1085
1086		/**
1087	<	* fail with message "Unexpected exception"
1087	>	* Checks that thread eventually enters the expected blocked thread state.
1088	>	*/
1089	>	void assertThreadBlocks(Thread thread, Thread.State expected) {
1090	>	// always sleep at least 1 ms, with high probability avoiding
1091	>	// transitory states
1092	>	for (long retries = LONG_DELAY_MS * 3 / 4; retries-->0; ) {
1093	>	try { delay(1); }
1094	>	catch (InterruptedException fail) {
1095	>	throw new AssertionError("Unexpected InterruptedException", fail);
1096	>	}
1097	>	Thread.State s = thread.getState();
1098	>	if (s == expected)
1099	>	return;
1100	>	else if (s == Thread.State.TERMINATED)
1101	>	fail("Unexpected thread termination");
1102	>	}
1103	>	fail("timed out waiting for thread to enter thread state " + expected);
1104	>	}
1105	>
1106	>	/**
1107	>	* Checks that future.get times out, with the default timeout of
1108	>	* {@code timeoutMillis()}.
1109		*/
1110	<	public void unexpectedException() {
1111	<	fail("Unexpected exception");
1110	>	void assertFutureTimesOut(Future future) {
1111	>	assertFutureTimesOut(future, timeoutMillis());
1112		}
1113
1114		/**
1115	<	* fail with message "Unexpected exception", with argument
1115	>	* Checks that future.get times out, with the given millisecond timeout.
1116		*/
1117	<	public void unexpectedException(Throwable ex) {
1118	<	ex.printStackTrace();
1119	<	fail("Unexpected exception: " + ex);
1117	>	void assertFutureTimesOut(Future future, long timeoutMillis) {
1118	>	long startTime = System.nanoTime();
1119	>	try {
1120	>	future.get(timeoutMillis, MILLISECONDS);
1121	>	shouldThrow();
1122	>	} catch (TimeoutException success) {
1123	>	} catch (Exception fail) {
1124	>	threadUnexpectedException(fail);
1125	>	} finally { future.cancel(true); }
1126	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
1127		}
1128
1129	+	/**
1130	+	* Fails with message "should throw exception".
1131	+	*/
1132	+	public void shouldThrow() {
1133	+	fail("Should throw exception");
1134	+	}
1135	+
1136	+	/**
1137	+	* Fails with message "should throw " + exceptionName.
1138	+	*/
1139	+	public void shouldThrow(String exceptionName) {
1140	+	fail("Should throw " + exceptionName);
1141	+	}
1142	+
1143	+	/**
1144	+	* The maximum number of consecutive spurious wakeups we should
1145	+	* tolerate (from APIs like LockSupport.park) before failing a test.
1146	+	*/
1147	+	static final int MAX_SPURIOUS_WAKEUPS = 10;
1148
1149		/**
1150		* The number of elements to place in collections, arrays, etc.
#	Line 388 | Line 1171 | public class JSR166TestCase extends Test
1171		public static final Integer m6  = new Integer(-6);
1172		public static final Integer m10 = new Integer(-10);
1173
1174	+	/**
1175	+	* Runs Runnable r with a security policy that permits precisely
1176	+	* the specified permissions.  If there is no current security
1177	+	* manager, the runnable is run twice, both with and without a
1178	+	* security manager.  We require that any security manager permit
1179	+	* getPolicy/setPolicy.
1180	+	*/
1181	+	public void runWithPermissions(Runnable r, Permission... permissions) {
1182	+	SecurityManager sm = System.getSecurityManager();
1183	+	if (sm == null) {
1184	+	r.run();
1185	+	}
1186	+	runWithSecurityManagerWithPermissions(r, permissions);
1187	+	}
1188	+
1189	+	/**
1190	+	* Runs Runnable r with a security policy that permits precisely
1191	+	* the specified permissions.  If there is no current security
1192	+	* manager, a temporary one is set for the duration of the
1193	+	* Runnable.  We require that any security manager permit
1194	+	* getPolicy/setPolicy.
1195	+	*/
1196	+	public void runWithSecurityManagerWithPermissions(Runnable r,
1197	+	Permission... permissions) {
1198	+	SecurityManager sm = System.getSecurityManager();
1199	+	if (sm == null) {
1200	+	Policy savedPolicy = Policy.getPolicy();
1201	+	try {
1202	+	Policy.setPolicy(permissivePolicy());
1203	+	System.setSecurityManager(new SecurityManager());
1204	+	runWithSecurityManagerWithPermissions(r, permissions);
1205	+	} finally {
1206	+	System.setSecurityManager(null);
1207	+	Policy.setPolicy(savedPolicy);
1208	+	}
1209	+	} else {
1210	+	Policy savedPolicy = Policy.getPolicy();
1211	+	AdjustablePolicy policy = new AdjustablePolicy(permissions);
1212	+	Policy.setPolicy(policy);
1213	+
1214	+	try {
1215	+	r.run();
1216	+	} finally {
1217	+	policy.addPermission(new SecurityPermission("setPolicy"));
1218	+	Policy.setPolicy(savedPolicy);
1219	+	}
1220	+	}
1221	+	}
1222	+
1223	+	/**
1224	+	* Runs a runnable without any permissions.
1225	+	*/
1226	+	public void runWithoutPermissions(Runnable r) {
1227	+	runWithPermissions(r);
1228	+	}
1229
1230		/**
1231		* A security policy where new permissions can be dynamically added
#	Line 395 | Line 1233 | public class JSR166TestCase extends Test
1233		*/
1234		public static class AdjustablePolicy extends java.security.Policy {
1235		Permissions perms = new Permissions();
1236	<	AdjustablePolicy() { }
1236	>	AdjustablePolicy(Permission... permissions) {
1237	>	for (Permission permission : permissions)
1238	>	perms.add(permission);
1239	>	}
1240		void addPermission(Permission perm) { perms.add(perm); }
1241		void clearPermissions() { perms = new Permissions(); }
1242		public PermissionCollection getPermissions(CodeSource cs) {
#	Line 408 | Line 1249 | public class JSR166TestCase extends Test
1249		return perms.implies(p);
1250		}
1251		public void refresh() {}
1252	+	public String toString() {
1253	+	List<Permission> ps = new ArrayList<>();
1254	+	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1255	+	ps.add(e.nextElement());
1256	+	return "AdjustablePolicy with permissions " + ps;
1257	+	}
1258	+	}
1259	+
1260	+	/**
1261	+	* Returns a policy containing all the permissions we ever need.
1262	+	*/
1263	+	public static Policy permissivePolicy() {
1264	+	return new AdjustablePolicy
1265	+	// Permissions j.u.c. needs directly
1266	+	(new RuntimePermission("modifyThread"),
1267	+	new RuntimePermission("getClassLoader"),
1268	+	new RuntimePermission("setContextClassLoader"),
1269	+	// Permissions needed to change permissions!
1270	+	new SecurityPermission("getPolicy"),
1271	+	new SecurityPermission("setPolicy"),
1272	+	new RuntimePermission("setSecurityManager"),
1273	+	// Permissions needed by the junit test harness
1274	+	new RuntimePermission("accessDeclaredMembers"),
1275	+	new PropertyPermission("*", "read"),
1276	+	new java.io.FilePermission("<<ALL FILES>>", "read"));
1277	+	}
1278	+
1279	+	/**
1280	+	* Sleeps until the given time has elapsed.
1281	+	* Throws AssertionError if interrupted.
1282	+	*/
1283	+	static void sleep(long millis) {
1284	+	try {
1285	+	delay(millis);
1286	+	} catch (InterruptedException fail) {
1287	+	throw new AssertionError("Unexpected InterruptedException", fail);
1288	+	}
1289	+	}
1290	+
1291	+	/**
1292	+	* Spin-waits up to the specified number of milliseconds for the given
1293	+	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1294	+	*/
1295	+	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1296	+	long startTime = 0L;
1297	+	for (;;) {
1298	+	Thread.State s = thread.getState();
1299	+	if (s == Thread.State.BLOCKED ||
1300	+	s == Thread.State.WAITING ||
1301	+	s == Thread.State.TIMED_WAITING)
1302	+	return;
1303	+	else if (s == Thread.State.TERMINATED)
1304	+	fail("Unexpected thread termination");
1305	+	else if (startTime == 0L)
1306	+	startTime = System.nanoTime();
1307	+	else if (millisElapsedSince(startTime) > timeoutMillis) {
1308	+	threadAssertTrue(thread.isAlive());
1309	+	fail("timed out waiting for thread to enter wait state");
1310	+	}
1311	+	Thread.yield();
1312	+	}
1313	+	}
1314	+
1315	+	/**
1316	+	* Spin-waits up to the specified number of milliseconds for the given
1317	+	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING,
1318	+	* and additionally satisfy the given condition.
1319	+	*/
1320	+	void waitForThreadToEnterWaitState(
1321	+	Thread thread, long timeoutMillis, Callable<Boolean> waitingForGodot) {
1322	+	long startTime = 0L;
1323	+	for (;;) {
1324	+	Thread.State s = thread.getState();
1325	+	if (s == Thread.State.BLOCKED ||
1326	+	s == Thread.State.WAITING ||
1327	+	s == Thread.State.TIMED_WAITING) {
1328	+	try {
1329	+	if (waitingForGodot.call())
1330	+	return;
1331	+	} catch (Throwable fail) { threadUnexpectedException(fail); }
1332	+	}
1333	+	else if (s == Thread.State.TERMINATED)
1334	+	fail("Unexpected thread termination");
1335	+	else if (startTime == 0L)
1336	+	startTime = System.nanoTime();
1337	+	else if (millisElapsedSince(startTime) > timeoutMillis) {
1338	+	threadAssertTrue(thread.isAlive());
1339	+	fail("timed out waiting for thread to enter wait state");
1340	+	}
1341	+	Thread.yield();
1342	+	}
1343	+	}
1344	+
1345	+	/**
1346	+	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1347	+	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1348	+	*/
1349	+	void waitForThreadToEnterWaitState(Thread thread) {
1350	+	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
1351	+	}
1352	+
1353	+	/**
1354	+	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1355	+	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING,
1356	+	* and additionally satisfy the given condition.
1357	+	*/
1358	+	void waitForThreadToEnterWaitState(
1359	+	Thread thread, Callable<Boolean> waitingForGodot) {
1360	+	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS, waitingForGodot);
1361	+	}
1362	+
1363	+	/**
1364	+	* Returns the number of milliseconds since time given by
1365	+	* startNanoTime, which must have been previously returned from a
1366	+	* call to {@link System#nanoTime()}.
1367	+	*/
1368	+	static long millisElapsedSince(long startNanoTime) {
1369	+	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1370		}
1371
1372	+	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1373	+	//         long startTime = System.nanoTime();
1374	+	//         try {
1375	+	//             r.run();
1376	+	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1377	+	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1378	+	//             throw new AssertionError("did not return promptly");
1379	+	//     }
1380	+
1381	+	//     void assertTerminatesPromptly(Runnable r) {
1382	+	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1383	+	//     }
1384	+
1385		/**
1386	<	* Sleep until the timeout has elapsed, or interrupted.
1387	<	* Does <em>NOT</em> throw InterruptedException.
1386	>	* Checks that timed f.get() returns the expected value, and does not
1387	>	* wait for the timeout to elapse before returning.
1388		*/
1389	<	void sleepTillInterrupted(long timeoutMillis) {
1389	>	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1390	>	long startTime = System.nanoTime();
1391	>	T actual = null;
1392		try {
1393	<	Thread.sleep(timeoutMillis);
1394	<	} catch (InterruptedException wakeup) {}
1393	>	actual = f.get(timeoutMillis, MILLISECONDS);
1394	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1395	>	assertEquals(expectedValue, actual);
1396	>	if (millisElapsedSince(startTime) > timeoutMillis/2)
1397	>	throw new AssertionError("timed get did not return promptly");
1398	>	}
1399	>
1400	>	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1401	>	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1402		}
1403
1404		/**
1405	<	* Returns a new started Thread running the given runnable.
1405	>	* Returns a new started daemon Thread running the given runnable.
1406		*/
1407		Thread newStartedThread(Runnable runnable) {
1408		Thread t = new Thread(runnable);
1409	+	t.setDaemon(true);
1410		t.start();
1411		return t;
1412		}
1413
1414	<	// Some convenient Runnable classes
1415	<
1416	<	public abstract class CheckedRunnable implements Runnable {
1417	<	protected abstract void realRun() throws Throwable;
1418	<
1419	<	public final void run() {
1420	<	try {
1421	<	realRun();
1422	<	} catch (Throwable t) {
1423	<	threadUnexpectedException(t);
1414	>	/**
1415	>	* Waits for the specified time (in milliseconds) for the thread
1416	>	* to terminate (using {@link Thread#join(long)}), else interrupts
1417	>	* the thread (in the hope that it may terminate later) and fails.
1418	>	*/
1419	>	void awaitTermination(Thread t, long timeoutMillis) {
1420	>	try {
1421	>	t.join(timeoutMillis);
1422	>	} catch (InterruptedException fail) {
1423	>	threadUnexpectedException(fail);
1424	>	} finally {
1425	>	if (t.getState() != Thread.State.TERMINATED) {
1426	>	t.interrupt();
1427	>	threadFail("timed out waiting for thread to terminate");
1428		}
1429		}
1430		}
1431
1432	<	public abstract class RunnableShouldThrow implements Runnable {
1433	<	protected abstract void realRun() throws Throwable;
1432	>	/**
1433	>	* Waits for LONG_DELAY_MS milliseconds for the thread to
1434	>	* terminate (using {@link Thread#join(long)}), else interrupts
1435	>	* the thread (in the hope that it may terminate later) and fails.
1436	>	*/
1437	>	void awaitTermination(Thread t) {
1438	>	awaitTermination(t, LONG_DELAY_MS);
1439	>	}
1440
1441	<	final Class<?> exceptionClass;
1441	>	// Some convenient Runnable classes
1442
1443	<	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
1444	<	this.exceptionClass = exceptionClass;
453	<	}
1443	>	public abstract class CheckedRunnable implements Runnable {
1444	>	protected abstract void realRun() throws Throwable;
1445
1446		public final void run() {
1447		try {
1448		realRun();
1449	<	threadShouldThrow(exceptionClass.getSimpleName());
1450	<	} catch (Throwable t) {
460	<	if (! exceptionClass.isInstance(t))
461	<	threadUnexpectedException(t);
1449	>	} catch (Throwable fail) {
1450	>	threadUnexpectedException(fail);
1451		}
1452		}
1453		}
#	Line 491 | Line 1480 | public class JSR166TestCase extends Test
1480		realRun();
1481		threadShouldThrow("InterruptedException");
1482		} catch (InterruptedException success) {
1483	<	} catch (Throwable t) {
1484	<	threadUnexpectedException(t);
1483	>	threadAssertFalse(Thread.interrupted());
1484	>	} catch (Throwable fail) {
1485	>	threadUnexpectedException(fail);
1486		}
1487		}
1488		}
#	Line 503 | Line 1493 | public class JSR166TestCase extends Test
1493		public final T call() {
1494		try {
1495		return realCall();
1496	<	} catch (Throwable t) {
1497	<	threadUnexpectedException(t);
1496	>	} catch (Throwable fail) {
1497	>	threadUnexpectedException(fail);
1498	>	return null;
1499		}
509	–	return null;
1500		}
1501		}
1502
1503	<	public abstract class CheckedInterruptedCallable<T> implements Callable<T> {
1503	>	public abstract class CheckedInterruptedCallable<T>
1504	>	implements Callable<T> {
1505		protected abstract T realCall() throws Throwable;
1506
1507		public final T call() {
#	Line 519 | Line 1510 | public class JSR166TestCase extends Test
1510		threadShouldThrow("InterruptedException");
1511		return result;
1512		} catch (InterruptedException success) {
1513	<	} catch (Throwable t) {
1514	<	threadUnexpectedException(t);
1513	>	threadAssertFalse(Thread.interrupted());
1514	>	} catch (Throwable fail) {
1515	>	threadUnexpectedException(fail);
1516		}
1517		return null;
1518		}
#	Line 537 | Line 1529 | public class JSR166TestCase extends Test
1529		public static final String TEST_STRING = "a test string";
1530
1531		public static class StringTask implements Callable<String> {
1532	<	public String call() { return TEST_STRING; }
1532	>	final String value;
1533	>	public StringTask() { this(TEST_STRING); }
1534	>	public StringTask(String value) { this.value = value; }
1535	>	public String call() { return value; }
1536		}
1537
1538		public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1539		return new CheckedCallable<String>() {
1540	<	public String realCall() {
1540	>	protected String realCall() {
1541		try {
1542		latch.await();
1543		} catch (InterruptedException quittingTime) {}
#	Line 550 | Line 1545 | public class JSR166TestCase extends Test
1545		}};
1546		}
1547
1548	<	public static class NPETask implements Callable<String> {
1549	<	public String call() { throw new NullPointerException(); }
1548	>	public Runnable countDowner(final CountDownLatch latch) {
1549	>	return new CheckedRunnable() {
1550	>	public void realRun() throws InterruptedException {
1551	>	latch.countDown();
1552	>	}};
1553	>	}
1554	>
1555	>	class LatchAwaiter extends CheckedRunnable {
1556	>	static final int NEW = 0;
1557	>	static final int RUNNING = 1;
1558	>	static final int DONE = 2;
1559	>	final CountDownLatch latch;
1560	>	int state = NEW;
1561	>	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1562	>	public void realRun() throws InterruptedException {
1563	>	state = 1;
1564	>	await(latch);
1565	>	state = 2;
1566	>	}
1567		}
1568
1569	<	public static class CallableOne implements Callable<Integer> {
1570	<	public Integer call() { return one; }
1569	>	public LatchAwaiter awaiter(CountDownLatch latch) {
1570	>	return new LatchAwaiter(latch);
1571		}
1572
1573	<	public class ShortRunnable extends CheckedRunnable {
1574	<	protected void realRun() throws Throwable {
1575	<	Thread.sleep(SHORT_DELAY_MS);
1573	>	public void await(CountDownLatch latch, long timeoutMillis) {
1574	>	try {
1575	>	if (!latch.await(timeoutMillis, MILLISECONDS))
1576	>	fail("timed out waiting for CountDownLatch for "
1577	>	+ (timeoutMillis/1000) + " sec");
1578	>	} catch (Throwable fail) {
1579	>	threadUnexpectedException(fail);
1580		}
1581		}
1582
1583	<	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1584	<	protected void realRun() throws InterruptedException {
1585	<	Thread.sleep(SHORT_DELAY_MS);
1583	>	public void await(CountDownLatch latch) {
1584	>	await(latch, LONG_DELAY_MS);
1585	>	}
1586	>
1587	>	public void await(Semaphore semaphore) {
1588	>	try {
1589	>	if (!semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS))
1590	>	fail("timed out waiting for Semaphore for "
1591	>	+ (LONG_DELAY_MS/1000) + " sec");
1592	>	} catch (Throwable fail) {
1593	>	threadUnexpectedException(fail);
1594		}
1595		}
1596
1597	<	public class SmallRunnable extends CheckedRunnable {
1598	<	protected void realRun() throws Throwable {
1599	<	Thread.sleep(SMALL_DELAY_MS);
1597	>	public void await(CyclicBarrier barrier) {
1598	>	try {
1599	>	barrier.await(LONG_DELAY_MS, MILLISECONDS);
1600	>	} catch (Throwable fail) {
1601	>	threadUnexpectedException(fail);
1602		}
1603		}
1604
1605	+	//     /**
1606	+	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1607	+	//      */
1608	+	//     public void await(AtomicBoolean flag) {
1609	+	//         await(flag, LONG_DELAY_MS);
1610	+	//     }
1611	+
1612	+	//     /**
1613	+	//      * Spin-waits up to the specified timeout until flag becomes true.
1614	+	//      */
1615	+	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1616	+	//         long startTime = System.nanoTime();
1617	+	//         while (!flag.get()) {
1618	+	//             if (millisElapsedSince(startTime) > timeoutMillis)
1619	+	//                 throw new AssertionError("timed out");
1620	+	//             Thread.yield();
1621	+	//         }
1622	+	//     }
1623	+
1624	+	public static class NPETask implements Callable<String> {
1625	+	public String call() { throw new NullPointerException(); }
1626	+	}
1627	+
1628		public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1629		protected void realRun() {
1630		try {
1631	<	Thread.sleep(SMALL_DELAY_MS);
1631	>	delay(SMALL_DELAY_MS);
1632		} catch (InterruptedException ok) {}
1633		}
1634		}
1635
1636	<	public class SmallCallable extends CheckedCallable {
1637	<	protected Object realCall() throws InterruptedException {
1638	<	Thread.sleep(SMALL_DELAY_MS);
1639	<	return Boolean.TRUE;
1640	<	}
1636	>	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1637	>	return new CheckedRunnable() {
1638	>	protected void realRun() {
1639	>	try {
1640	>	delay(timeoutMillis);
1641	>	} catch (InterruptedException ok) {}
1642	>	}};
1643		}
1644
1645	<	public class SmallInterruptedRunnable extends CheckedInterruptedRunnable {
1646	<	protected void realRun() throws InterruptedException {
1647	<	Thread.sleep(SMALL_DELAY_MS);
1645	>	/**
1646	>	* For use as ThreadFactory in constructors
1647	>	*/
1648	>	public static class SimpleThreadFactory implements ThreadFactory {
1649	>	public Thread newThread(Runnable r) {
1650	>	return new Thread(r);
1651		}
1652		}
1653
1654	<	public class MediumRunnable extends CheckedRunnable {
1655	<	protected void realRun() throws Throwable {
602	<	Thread.sleep(MEDIUM_DELAY_MS);
603	<	}
1654	>	public interface TrackedRunnable extends Runnable {
1655	>	boolean isDone();
1656		}
1657
1658	<	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1659	<	protected void realRun() throws InterruptedException {
1660	<	Thread.sleep(MEDIUM_DELAY_MS);
1658	>	public static class TrackedNoOpRunnable implements Runnable {
1659	>	public volatile boolean done = false;
1660	>	public void run() {
1661	>	done = true;
1662		}
1663		}
1664
1665	<	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1666	<	protected void realRun() {
1665	>	/**
1666	>	* Analog of CheckedRunnable for RecursiveAction
1667	>	*/
1668	>	public abstract class CheckedRecursiveAction extends RecursiveAction {
1669	>	protected abstract void realCompute() throws Throwable;
1670	>
1671	>	@Override protected final void compute() {
1672		try {
1673	<	Thread.sleep(MEDIUM_DELAY_MS);
1674	<	} catch (InterruptedException ok) {}
1673	>	realCompute();
1674	>	} catch (Throwable fail) {
1675	>	threadUnexpectedException(fail);
1676	>	}
1677		}
1678		}
1679
1680	<	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1681	<	protected void realRun() {
1680	>	/**
1681	>	* Analog of CheckedCallable for RecursiveTask
1682	>	*/
1683	>	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1684	>	protected abstract T realCompute() throws Throwable;
1685	>
1686	>	@Override protected final T compute() {
1687		try {
1688	<	Thread.sleep(LONG_DELAY_MS);
1689	<	} catch (InterruptedException ok) {}
1688	>	return realCompute();
1689	>	} catch (Throwable fail) {
1690	>	threadUnexpectedException(fail);
1691	>	return null;
1692	>	}
1693		}
1694		}
1695
1696		/**
1697	<	* For use as ThreadFactory in constructors
1697	>	* For use as RejectedExecutionHandler in constructors
1698		*/
1699	<	public static class SimpleThreadFactory implements ThreadFactory {
1700	<	public Thread newThread(Runnable r) {
1701	<	return new Thread(r);
634	<	}
1699	>	public static class NoOpREHandler implements RejectedExecutionHandler {
1700	>	public void rejectedExecution(Runnable r,
1701	>	ThreadPoolExecutor executor) {}
1702		}
1703
1704	<	public static class TrackedShortRunnable implements Runnable {
1705	<	public volatile boolean done = false;
1706	<	public void run() {
1704	>	/**
1705	>	* A CyclicBarrier that uses timed await and fails with
1706	>	* AssertionErrors instead of throwing checked exceptions.
1707	>	*/
1708	>	public static class CheckedBarrier extends CyclicBarrier {
1709	>	public CheckedBarrier(int parties) { super(parties); }
1710	>
1711	>	public int await() {
1712		try {
1713	<	Thread.sleep(SMALL_DELAY_MS);
1714	<	done = true;
1715	<	} catch (InterruptedException ok) {}
1713	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1714	>	} catch (TimeoutException timedOut) {
1715	>	throw new AssertionError("timed out");
1716	>	} catch (Exception fail) {
1717	>	throw new AssertionError("Unexpected exception: " + fail, fail);
1718	>	}
1719		}
1720		}
1721
1722	<	public static class TrackedMediumRunnable implements Runnable {
1723	<	public volatile boolean done = false;
1724	<	public void run() {
1722	>	void checkEmpty(BlockingQueue q) {
1723	>	try {
1724	>	assertTrue(q.isEmpty());
1725	>	assertEquals(0, q.size());
1726	>	assertNull(q.peek());
1727	>	assertNull(q.poll());
1728	>	assertNull(q.poll(randomExpiredTimeout(), randomTimeUnit()));
1729	>	assertEquals(q.toString(), "[]");
1730	>	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1731	>	assertFalse(q.iterator().hasNext());
1732		try {
1733	<	Thread.sleep(MEDIUM_DELAY_MS);
1734	<	done = true;
1735	<	} catch (InterruptedException ok) {}
1733	>	q.element();
1734	>	shouldThrow();
1735	>	} catch (NoSuchElementException success) {}
1736	>	try {
1737	>	q.iterator().next();
1738	>	shouldThrow();
1739	>	} catch (NoSuchElementException success) {}
1740	>	try {
1741	>	q.remove();
1742	>	shouldThrow();
1743	>	} catch (NoSuchElementException success) {}
1744	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1745	>	}
1746	>
1747	>	void assertSerialEquals(Object x, Object y) {
1748	>	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1749	>	}
1750	>
1751	>	void assertNotSerialEquals(Object x, Object y) {
1752	>	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1753	>	}
1754	>
1755	>	byte[] serialBytes(Object o) {
1756	>	try {
1757	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1758	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1759	>	oos.writeObject(o);
1760	>	oos.flush();
1761	>	oos.close();
1762	>	return bos.toByteArray();
1763	>	} catch (Throwable fail) {
1764	>	threadUnexpectedException(fail);
1765	>	return new byte[0];
1766		}
1767		}
1768
1769	<	public static class TrackedLongRunnable implements Runnable {
1770	<	public volatile boolean done = false;
1771	<	public void run() {
1772	<	try {
1773	<	Thread.sleep(LONG_DELAY_MS);
1774	<	done = true;
663	<	} catch (InterruptedException ok) {}
1769	>	void assertImmutable(final Object o) {
1770	>	if (o instanceof Collection) {
1771	>	assertThrows(
1772	>	UnsupportedOperationException.class,
1773	>	new Runnable() { public void run() {
1774	>	((Collection) o).add(null);}});
1775		}
1776		}
1777
1778	<	public static class TrackedNoOpRunnable implements Runnable {
1779	<	public volatile boolean done = false;
1780	<	public void run() {
1781	<	done = true;
1778	>	@SuppressWarnings("unchecked")
1779	>	<T> T serialClone(T o) {
1780	>	try {
1781	>	ObjectInputStream ois = new ObjectInputStream
1782	>	(new ByteArrayInputStream(serialBytes(o)));
1783	>	T clone = (T) ois.readObject();
1784	>	if (o == clone) assertImmutable(o);
1785	>	assertSame(o.getClass(), clone.getClass());
1786	>	return clone;
1787	>	} catch (Throwable fail) {
1788	>	threadUnexpectedException(fail);
1789	>	return null;
1790		}
1791		}
1792
1793	<	public static class TrackedCallable implements Callable {
1794	<	public volatile boolean done = false;
1795	<	public Object call() {
1796	<	try {
1797	<	Thread.sleep(SMALL_DELAY_MS);
1798	<	done = true;
1799	<	} catch (InterruptedException ok) {}
1800	<	return Boolean.TRUE;
1793	>	/**
1794	>	* A version of serialClone that leaves error handling (for
1795	>	* e.g. NotSerializableException) up to the caller.
1796	>	*/
1797	>	@SuppressWarnings("unchecked")
1798	>	<T> T serialClonePossiblyFailing(T o)
1799	>	throws ReflectiveOperationException, java.io.IOException {
1800	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1801	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1802	>	oos.writeObject(o);
1803	>	oos.flush();
1804	>	oos.close();
1805	>	ObjectInputStream ois = new ObjectInputStream
1806	>	(new ByteArrayInputStream(bos.toByteArray()));
1807	>	T clone = (T) ois.readObject();
1808	>	if (o == clone) assertImmutable(o);
1809	>	assertSame(o.getClass(), clone.getClass());
1810	>	return clone;
1811	>	}
1812	>
1813	>	/**
1814	>	* If o implements Cloneable and has a public clone method,
1815	>	* returns a clone of o, else null.
1816	>	*/
1817	>	@SuppressWarnings("unchecked")
1818	>	<T> T cloneableClone(T o) {
1819	>	if (!(o instanceof Cloneable)) return null;
1820	>	final T clone;
1821	>	try {
1822	>	clone = (T) o.getClass().getMethod("clone").invoke(o);
1823	>	} catch (NoSuchMethodException ok) {
1824	>	return null;
1825	>	} catch (ReflectiveOperationException unexpected) {
1826	>	throw new Error(unexpected);
1827		}
1828	+	assertNotSame(o, clone); // not 100% guaranteed by spec
1829	+	assertSame(o.getClass(), clone.getClass());
1830	+	return clone;
1831	+	}
1832	+
1833	+	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1834	+	Runnable... throwingActions) {
1835	+	for (Runnable throwingAction : throwingActions) {
1836	+	boolean threw = false;
1837	+	try { throwingAction.run(); }
1838	+	catch (Throwable t) {
1839	+	threw = true;
1840	+	if (!expectedExceptionClass.isInstance(t))
1841	+	throw new AssertionError(
1842	+	"Expected " + expectedExceptionClass.getName() +
1843	+	", got " + t.getClass().getName(),
1844	+	t);
1845	+	}
1846	+	if (!threw)
1847	+	shouldThrow(expectedExceptionClass.getName());
1848	+	}
1849	+	}
1850	+
1851	+	public void assertIteratorExhausted(Iterator<?> it) {
1852	+	try {
1853	+	it.next();
1854	+	shouldThrow();
1855	+	} catch (NoSuchElementException success) {}
1856	+	assertFalse(it.hasNext());
1857	+	}
1858	+
1859	+	public <T> Callable<T> callableThrowing(final Exception ex) {
1860	+	return new Callable<T>() { public T call() throws Exception { throw ex; }};
1861	+	}
1862	+
1863	+	public Runnable runnableThrowing(final RuntimeException ex) {
1864	+	return new Runnable() { public void run() { throw ex; }};
1865		}
1866
1867	+	/** A reusable thread pool to be shared by tests. */
1868	+	static final ExecutorService cachedThreadPool =
1869	+	new ThreadPoolExecutor(0, Integer.MAX_VALUE,
1870	+	1000L, MILLISECONDS,
1871	+	new SynchronousQueue<Runnable>());
1872	+
1873	+	static <T> void shuffle(T[] array) {
1874	+	Collections.shuffle(Arrays.asList(array), ThreadLocalRandom.current());
1875	+	}
1876
1877		/**
1878	<	* For use as RejectedExecutionHandler in constructors
1878	>	* Returns the same String as would be returned by {@link
1879	>	* Object#toString}, whether or not the given object's class
1880	>	* overrides toString().
1881	>	*
1882	>	* @see System#identityHashCode
1883		*/
1884	<	public static class NoOpREHandler implements RejectedExecutionHandler {
1885	<	public void rejectedExecution(Runnable r,
1886	<	ThreadPoolExecutor executor) {}
1884	>	static String identityString(Object x) {
1885	>	return x.getClass().getName()
1886	>	+ "@" + Integer.toHexString(System.identityHashCode(x));
1887		}
1888
1889	+	// --- Shared assertions for Executor tests ---
1890	+
1891	+	/**
1892	+	* Returns maximum number of tasks that can be submitted to given
1893	+	* pool (with bounded queue) before saturation (when submission
1894	+	* throws RejectedExecutionException).
1895	+	*/
1896	+	static final int saturatedSize(ThreadPoolExecutor pool) {
1897	+	BlockingQueue<Runnable> q = pool.getQueue();
1898	+	return pool.getMaximumPoolSize() + q.size() + q.remainingCapacity();
1899	+	}
1900	+
1901	+	@SuppressWarnings("FutureReturnValueIgnored")
1902	+	void assertNullTaskSubmissionThrowsNullPointerException(Executor e) {
1903	+	try {
1904	+	e.execute((Runnable) null);
1905	+	shouldThrow();
1906	+	} catch (NullPointerException success) {}
1907	+
1908	+	if (! (e instanceof ExecutorService)) return;
1909	+	ExecutorService es = (ExecutorService) e;
1910	+	try {
1911	+	es.submit((Runnable) null);
1912	+	shouldThrow();
1913	+	} catch (NullPointerException success) {}
1914	+	try {
1915	+	es.submit((Runnable) null, Boolean.TRUE);
1916	+	shouldThrow();
1917	+	} catch (NullPointerException success) {}
1918	+	try {
1919	+	es.submit((Callable) null);
1920	+	shouldThrow();
1921	+	} catch (NullPointerException success) {}
1922	+
1923	+	if (! (e instanceof ScheduledExecutorService)) return;
1924	+	ScheduledExecutorService ses = (ScheduledExecutorService) e;
1925	+	try {
1926	+	ses.schedule((Runnable) null,
1927	+	randomTimeout(), randomTimeUnit());
1928	+	shouldThrow();
1929	+	} catch (NullPointerException success) {}
1930	+	try {
1931	+	ses.schedule((Callable) null,
1932	+	randomTimeout(), randomTimeUnit());
1933	+	shouldThrow();
1934	+	} catch (NullPointerException success) {}
1935	+	try {
1936	+	ses.scheduleAtFixedRate((Runnable) null,
1937	+	randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
1938	+	shouldThrow();
1939	+	} catch (NullPointerException success) {}
1940	+	try {
1941	+	ses.scheduleWithFixedDelay((Runnable) null,
1942	+	randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
1943	+	shouldThrow();
1944	+	} catch (NullPointerException success) {}
1945	+	}
1946	+
1947	+	void setRejectedExecutionHandler(
1948	+	ThreadPoolExecutor p, RejectedExecutionHandler handler) {
1949	+	p.setRejectedExecutionHandler(handler);
1950	+	assertSame(handler, p.getRejectedExecutionHandler());
1951	+	}
1952	+
1953	+	void assertTaskSubmissionsAreRejected(ThreadPoolExecutor p) {
1954	+	final RejectedExecutionHandler savedHandler = p.getRejectedExecutionHandler();
1955	+	final long savedTaskCount = p.getTaskCount();
1956	+	final long savedCompletedTaskCount = p.getCompletedTaskCount();
1957	+	final int savedQueueSize = p.getQueue().size();
1958	+	final boolean stock = (p.getClass().getClassLoader() == null);
1959	+
1960	+	Runnable r = () -> {};
1961	+	Callable<Boolean> c = () -> Boolean.TRUE;
1962	+
1963	+	class Recorder implements RejectedExecutionHandler {
1964	+	public volatile Runnable r = null;
1965	+	public volatile ThreadPoolExecutor p = null;
1966	+	public void reset() { r = null; p = null; }
1967	+	public void rejectedExecution(Runnable r, ThreadPoolExecutor p) {
1968	+	assertNull(this.r);
1969	+	assertNull(this.p);
1970	+	this.r = r;
1971	+	this.p = p;
1972	+	}
1973	+	}
1974	+
1975	+	// check custom handler is invoked exactly once per task
1976	+	Recorder recorder = new Recorder();
1977	+	setRejectedExecutionHandler(p, recorder);
1978	+	for (int i = 2; i--> 0; ) {
1979	+	recorder.reset();
1980	+	p.execute(r);
1981	+	if (stock && p.getClass() == ThreadPoolExecutor.class)
1982	+	assertSame(r, recorder.r);
1983	+	assertSame(p, recorder.p);
1984	+
1985	+	recorder.reset();
1986	+	assertFalse(p.submit(r).isDone());
1987	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
1988	+	assertSame(p, recorder.p);
1989	+
1990	+	recorder.reset();
1991	+	assertFalse(p.submit(r, Boolean.TRUE).isDone());
1992	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
1993	+	assertSame(p, recorder.p);
1994	+
1995	+	recorder.reset();
1996	+	assertFalse(p.submit(c).isDone());
1997	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
1998	+	assertSame(p, recorder.p);
1999	+
2000	+	if (p instanceof ScheduledExecutorService) {
2001	+	ScheduledExecutorService s = (ScheduledExecutorService) p;
2002	+	ScheduledFuture<?> future;
2003	+
2004	+	recorder.reset();
2005	+	future = s.schedule(r, randomTimeout(), randomTimeUnit());
2006	+	assertFalse(future.isDone());
2007	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2008	+	assertSame(p, recorder.p);
2009	+
2010	+	recorder.reset();
2011	+	future = s.schedule(c, randomTimeout(), randomTimeUnit());
2012	+	assertFalse(future.isDone());
2013	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2014	+	assertSame(p, recorder.p);
2015	+
2016	+	recorder.reset();
2017	+	future = s.scheduleAtFixedRate(r, randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2018	+	assertFalse(future.isDone());
2019	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2020	+	assertSame(p, recorder.p);
2021	+
2022	+	recorder.reset();
2023	+	future = s.scheduleWithFixedDelay(r, randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2024	+	assertFalse(future.isDone());
2025	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2026	+	assertSame(p, recorder.p);
2027	+	}
2028	+	}
2029	+
2030	+	// Checking our custom handler above should be sufficient, but
2031	+	// we add some integration tests of standard handlers.
2032	+	final AtomicReference<Thread> thread = new AtomicReference<>();
2033	+	final Runnable setThread = () -> thread.set(Thread.currentThread());
2034	+
2035	+	setRejectedExecutionHandler(p, new ThreadPoolExecutor.AbortPolicy());
2036	+	try {
2037	+	p.execute(setThread);
2038	+	shouldThrow();
2039	+	} catch (RejectedExecutionException success) {}
2040	+	assertNull(thread.get());
2041	+
2042	+	setRejectedExecutionHandler(p, new ThreadPoolExecutor.DiscardPolicy());
2043	+	p.execute(setThread);
2044	+	assertNull(thread.get());
2045	+
2046	+	setRejectedExecutionHandler(p, new ThreadPoolExecutor.CallerRunsPolicy());
2047	+	p.execute(setThread);
2048	+	if (p.isShutdown())
2049	+	assertNull(thread.get());
2050	+	else
2051	+	assertSame(Thread.currentThread(), thread.get());
2052	+
2053	+	setRejectedExecutionHandler(p, savedHandler);
2054	+
2055	+	// check that pool was not perturbed by handlers
2056	+	assertEquals(savedTaskCount, p.getTaskCount());
2057	+	assertEquals(savedCompletedTaskCount, p.getCompletedTaskCount());
2058	+	assertEquals(savedQueueSize, p.getQueue().size());
2059	+	}
2060	+
2061	+	void assertCollectionsEquals(Collection<?> x, Collection<?> y) {
2062	+	assertEquals(x, y);
2063	+	assertEquals(y, x);
2064	+	assertEquals(x.isEmpty(), y.isEmpty());
2065	+	assertEquals(x.size(), y.size());
2066	+	if (x instanceof List) {
2067	+	assertEquals(x.toString(), y.toString());
2068	+	}
2069	+	if (x instanceof List || x instanceof Set) {
2070	+	assertEquals(x.hashCode(), y.hashCode());
2071	+	}
2072	+	if (x instanceof List || x instanceof Deque) {
2073	+	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
2074	+	assertTrue(Arrays.equals(x.toArray(new Object[0]),
2075	+	y.toArray(new Object[0])));
2076	+	}
2077	+	}
2078	+
2079	+	/**
2080	+	* A weaker form of assertCollectionsEquals which does not insist
2081	+	* that the two collections satisfy Object#equals(Object), since
2082	+	* they may use identity semantics as Deques do.
2083	+	*/
2084	+	void assertCollectionsEquivalent(Collection<?> x, Collection<?> y) {
2085	+	if (x instanceof List || x instanceof Set)
2086	+	assertCollectionsEquals(x, y);
2087	+	else {
2088	+	assertEquals(x.isEmpty(), y.isEmpty());
2089	+	assertEquals(x.size(), y.size());
2090	+	assertEquals(new HashSet(x), new HashSet(y));
2091	+	if (x instanceof Deque) {
2092	+	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
2093	+	assertTrue(Arrays.equals(x.toArray(new Object[0]),
2094	+	y.toArray(new Object[0])));
2095	+	}
2096	+	}
2097	+	}
2098		}

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