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Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.34 by jsr166, Fri Jul 31 23:53:23 2009 UTC vs.
Revision 1.205 by jsr166, Mon Oct 17 17:52:30 2016 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
4	>	* http://creativecommons.org/publicdomain/zero/1.0/
5		* Other contributors include Andrew Wright, Jeffrey Hayes,
6		* Pat Fisher, Mike Judd.
7		*/
8
9	<	import junit.framework.*;
10	<	import java.util.*;
11	<	import java.util.concurrent.*;
12	<	import java.io.*;
13	<	import java.security.*;
9	>	/*
10	>	* @test
11	>	* @summary JSR-166 tck tests
12	>	* @modules java.management
13	>	* @build *
14	>	* @run junit/othervm/timeout=1000 -Djsr166.testImplementationDetails=true JSR166TestCase
15	>	* @run junit/othervm/timeout=1000 -Djava.util.concurrent.ForkJoinPool.common.parallelism=0 -Djsr166.testImplementationDetails=true JSR166TestCase
16	>	* @run junit/othervm/timeout=1000 -Djava.util.concurrent.ForkJoinPool.common.parallelism=1 -Djava.util.secureRandomSeed=true JSR166TestCase
17	>	*/
18	>
19	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
20	>	import static java.util.concurrent.TimeUnit.MINUTES;
21	>	import static java.util.concurrent.TimeUnit.NANOSECONDS;
22	>
23	>	import java.io.ByteArrayInputStream;
24	>	import java.io.ByteArrayOutputStream;
25	>	import java.io.ObjectInputStream;
26	>	import java.io.ObjectOutputStream;
27	>	import java.lang.management.ManagementFactory;
28	>	import java.lang.management.ThreadInfo;
29	>	import java.lang.management.ThreadMXBean;
30	>	import java.lang.reflect.Constructor;
31	>	import java.lang.reflect.Method;
32	>	import java.lang.reflect.Modifier;
33	>	import java.nio.file.Files;
34	>	import java.nio.file.Paths;
35	>	import java.security.CodeSource;
36	>	import java.security.Permission;
37	>	import java.security.PermissionCollection;
38	>	import java.security.Permissions;
39	>	import java.security.Policy;
40	>	import java.security.ProtectionDomain;
41	>	import java.security.SecurityPermission;
42	>	import java.util.ArrayList;
43	>	import java.util.Arrays;
44	>	import java.util.Collections;
45	>	import java.util.Date;
46	>	import java.util.Enumeration;
47	>	import java.util.Iterator;
48	>	import java.util.List;
49	>	import java.util.NoSuchElementException;
50	>	import java.util.PropertyPermission;
51	>	import java.util.concurrent.BlockingQueue;
52	>	import java.util.concurrent.Callable;
53	>	import java.util.concurrent.CountDownLatch;
54	>	import java.util.concurrent.CyclicBarrier;
55	>	import java.util.concurrent.ExecutionException;
56	>	import java.util.concurrent.Executors;
57	>	import java.util.concurrent.ExecutorService;
58	>	import java.util.concurrent.ForkJoinPool;
59	>	import java.util.concurrent.Future;
60	>	import java.util.concurrent.RecursiveAction;
61	>	import java.util.concurrent.RecursiveTask;
62	>	import java.util.concurrent.RejectedExecutionHandler;
63	>	import java.util.concurrent.Semaphore;
64	>	import java.util.concurrent.SynchronousQueue;
65	>	import java.util.concurrent.ThreadFactory;
66	>	import java.util.concurrent.ThreadLocalRandom;
67	>	import java.util.concurrent.ThreadPoolExecutor;
68	>	import java.util.concurrent.TimeoutException;
69	>	import java.util.concurrent.atomic.AtomicBoolean;
70	>	import java.util.concurrent.atomic.AtomicReference;
71	>	import java.util.regex.Matcher;
72	>	import java.util.regex.Pattern;
73	>
74	>	import junit.framework.AssertionFailedError;
75	>	import junit.framework.Test;
76	>	import junit.framework.TestCase;
77	>	import junit.framework.TestResult;
78	>	import junit.framework.TestSuite;
79
80		/**
81		* Base class for JSR166 Junit TCK tests.  Defines some constants,
#	Line 22 | Line 87 | import java.security.*;
87		*
88		* <ol>
89		*
90	<	* <li> All assertions in code running in generated threads must use
90	>	* <li>All assertions in code running in generated threads must use
91		* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
92		* #threadAssertEquals}, or {@link #threadAssertNull}, (not
93	<	* <tt>fail</tt>, <tt>assertTrue</tt>, etc.) It is OK (but not
93	>	* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
94		* particularly recommended) for other code to use these forms too.
95		* Only the most typically used JUnit assertion methods are defined
96	<	* this way, but enough to live with.</li>
96	>	* this way, but enough to live with.
97		*
98	<	* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
99	<	* to invoke <tt>super.setUp</tt> and <tt>super.tearDown</tt> within
98	>	* <li>If you override {@link #setUp} or {@link #tearDown}, make sure
99	>	* to invoke {@code super.setUp} and {@code super.tearDown} within
100		* them. These methods are used to clear and check for thread
101	<	* assertion failures.</li>
101	>	* assertion failures.
102		*
103	<	* <li>All delays and timeouts must use one of the constants <tt>
104	<	* SHORT_DELAY_MS</tt>, <tt> SMALL_DELAY_MS</tt>, <tt> MEDIUM_DELAY_MS</tt>,
105	<	* <tt> LONG_DELAY_MS</tt>. The idea here is that a SHORT is always
103	>	* <li>All delays and timeouts must use one of the constants {@code
104	>	* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
105	>	* {@code LONG_DELAY_MS}. The idea here is that a SHORT is always
106		* discriminable from zero time, and always allows enough time for the
107		* small amounts of computation (creating a thread, calling a few
108		* methods, etc) needed to reach a timeout point. Similarly, a SMALL
109		* is always discriminable as larger than SHORT and smaller than
110		* MEDIUM.  And so on. These constants are set to conservative values,
111		* but even so, if there is ever any doubt, they can all be increased
112	<	* in one spot to rerun tests on slower platforms.</li>
112	>	* in one spot to rerun tests on slower platforms.
113		*
114	<	* <li> All threads generated must be joined inside each test case
115	<	* method (or <tt>fail</tt> to do so) before returning from the
116	<	* method. The <tt> joinPool</tt> method can be used to do this when
117	<	* using Executors.</li>
114	>	* <li>All threads generated must be joined inside each test case
115	>	* method (or {@code fail} to do so) before returning from the
116	>	* method. The {@code joinPool} method can be used to do this when
117	>	* using Executors.
118		*
119		* </ol>
120		*
121	<	* <p> <b>Other notes</b>
121	>	* <p><b>Other notes</b>
122		* <ul>
123		*
124	<	* <li> Usually, there is one testcase method per JSR166 method
124	>	* <li>Usually, there is one testcase method per JSR166 method
125		* covering "normal" operation, and then as many exception-testing
126		* methods as there are exceptions the method can throw. Sometimes
127		* there are multiple tests per JSR166 method when the different
128		* "normal" behaviors differ significantly. And sometimes testcases
129	<	* cover multiple methods when they cannot be tested in
65	<	* isolation.</li>
129	>	* cover multiple methods when they cannot be tested in isolation.
130		*
131	<	* <li> The documentation style for testcases is to provide as javadoc
131	>	* <li>The documentation style for testcases is to provide as javadoc
132		* a simple sentence or two describing the property that the testcase
133		* method purports to test. The javadocs do not say anything about how
134	<	* the property is tested. To find out, read the code.</li>
134	>	* the property is tested. To find out, read the code.
135		*
136	<	* <li> These tests are "conformance tests", and do not attempt to
136	>	* <li>These tests are "conformance tests", and do not attempt to
137		* test throughput, latency, scalability or other performance factors
138		* (see the separate "jtreg" tests for a set intended to check these
139		* for the most central aspects of functionality.) So, most tests use
140		* the smallest sensible numbers of threads, collection sizes, etc
141	<	* needed to check basic conformance.</li>
141	>	* needed to check basic conformance.
142		*
143		* <li>The test classes currently do not declare inclusion in
144		* any particular package to simplify things for people integrating
145	<	* them in TCK test suites.</li>
145	>	* them in TCK test suites.
146		*
147	<	* <li> As a convenience, the <tt>main</tt> of this class (JSR166TestCase)
148	<	* runs all JSR166 unit tests.</li>
147	>	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
148	>	* runs all JSR166 unit tests.
149		*
150		* </ul>
151		*/
152		public class JSR166TestCase extends TestCase {
153	+	private static final boolean useSecurityManager =
154	+	Boolean.getBoolean("jsr166.useSecurityManager");
155	+
156	+	protected static final boolean expensiveTests =
157	+	Boolean.getBoolean("jsr166.expensiveTests");
158	+
159		/**
160	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
160	>	* If true, also run tests that are not part of the official tck
161	>	* because they test unspecified implementation details.
162		*/
163	<	public static void main (String[] args) {
164	<	int iters = 1;
165	<	if (args.length > 0)
166	<	iters = Integer.parseInt(args[0]);
167	<	Test s = suite();
168	<	for (int i = 0; i < iters; ++i) {
169	<	junit.textui.TestRunner.run (s);
163	>	protected static final boolean testImplementationDetails =
164	>	Boolean.getBoolean("jsr166.testImplementationDetails");
165	>
166	>	/**
167	>	* If true, report on stdout all "slow" tests, that is, ones that
168	>	* take more than profileThreshold milliseconds to execute.
169	>	*/
170	>	private static final boolean profileTests =
171	>	Boolean.getBoolean("jsr166.profileTests");
172	>
173	>	/**
174	>	* The number of milliseconds that tests are permitted for
175	>	* execution without being reported, when profileTests is set.
176	>	*/
177	>	private static final long profileThreshold =
178	>	Long.getLong("jsr166.profileThreshold", 100);
179	>
180	>	/**
181	>	* The number of repetitions per test (for tickling rare bugs).
182	>	*/
183	>	private static final int runsPerTest =
184	>	Integer.getInteger("jsr166.runsPerTest", 1);
185	>
186	>	/**
187	>	* The number of repetitions of the test suite (for finding leaks?).
188	>	*/
189	>	private static final int suiteRuns =
190	>	Integer.getInteger("jsr166.suiteRuns", 1);
191	>
192	>	/**
193	>	* Returns the value of the system property, or NaN if not defined.
194	>	*/
195	>	private static float systemPropertyValue(String name) {
196	>	String floatString = System.getProperty(name);
197	>	if (floatString == null)
198	>	return Float.NaN;
199	>	try {
200	>	return Float.parseFloat(floatString);
201	>	} catch (NumberFormatException ex) {
202	>	throw new IllegalArgumentException(
203	>	String.format("Bad float value in system property %s=%s",
204	>	name, floatString));
205	>	}
206	>	}
207	>
208	>	/**
209	>	* The scaling factor to apply to standard delays used in tests.
210	>	* May be initialized from any of:
211	>	* - the "jsr166.delay.factor" system property
212	>	* - the "test.timeout.factor" system property (as used by jtreg)
213	>	*   See: http://openjdk.java.net/jtreg/tag-spec.html
214	>	* - hard-coded fuzz factor when using a known slowpoke VM
215	>	*/
216	>	private static final float delayFactor = delayFactor();
217	>
218	>	private static float delayFactor() {
219	>	float x;
220	>	if (!Float.isNaN(x = systemPropertyValue("jsr166.delay.factor")))
221	>	return x;
222	>	if (!Float.isNaN(x = systemPropertyValue("test.timeout.factor")))
223	>	return x;
224	>	String prop = System.getProperty("java.vm.version");
225	>	if (prop != null && prop.matches(".*debug.*"))
226	>	return 4.0f; // How much slower is fastdebug than product?!
227	>	return 1.0f;
228	>	}
229	>
230	>	public JSR166TestCase() { super(); }
231	>	public JSR166TestCase(String name) { super(name); }
232	>
233	>	/**
234	>	* A filter for tests to run, matching strings of the form
235	>	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
236	>	* Usefully combined with jsr166.runsPerTest.
237	>	*/
238	>	private static final Pattern methodFilter = methodFilter();
239	>
240	>	private static Pattern methodFilter() {
241	>	String regex = System.getProperty("jsr166.methodFilter");
242	>	return (regex == null) ? null : Pattern.compile(regex);
243	>	}
244	>
245	>	// Instrumentation to debug very rare, but very annoying hung test runs.
246	>	static volatile TestCase currentTestCase;
247	>	// static volatile int currentRun = 0;
248	>	static {
249	>	Runnable checkForWedgedTest = new Runnable() { public void run() {
250	>	// Avoid spurious reports with enormous runsPerTest.
251	>	// A single test case run should never take more than 1 second.
252	>	// But let's cap it at the high end too ...
253	>	final int timeoutMinutes =
254	>	Math.min(15, Math.max(runsPerTest / 60, 1));
255	>	for (TestCase lastTestCase = currentTestCase;;) {
256	>	try { MINUTES.sleep(timeoutMinutes); }
257	>	catch (InterruptedException unexpected) { break; }
258	>	if (lastTestCase == currentTestCase) {
259	>	System.err.printf(
260	>	"Looks like we're stuck running test: %s%n",
261	>	lastTestCase);
262	>	//                     System.err.printf(
263	>	//                         "Looks like we're stuck running test: %s (%d/%d)%n",
264	>	//                         lastTestCase, currentRun, runsPerTest);
265	>	//                     System.err.println("availableProcessors=" +
266	>	//                         Runtime.getRuntime().availableProcessors());
267	>	//                     System.err.printf("cpu model = %s%n", cpuModel());
268	>	dumpTestThreads();
269	>	// one stack dump is probably enough; more would be spam
270	>	break;
271	>	}
272	>	lastTestCase = currentTestCase;
273	>	}}};
274	>	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
275	>	thread.setDaemon(true);
276	>	thread.start();
277	>	}
278	>
279	>	//     public static String cpuModel() {
280	>	//         try {
281	>	//             Matcher matcher = Pattern.compile("model name\\s*: (.*)")
282	>	//                 .matcher(new String(
283	>	//                      Files.readAllBytes(Paths.get("/proc/cpuinfo")), "UTF-8"));
284	>	//             matcher.find();
285	>	//             return matcher.group(1);
286	>	//         } catch (Exception ex) { return null; }
287	>	//     }
288	>
289	>	public void runBare() throws Throwable {
290	>	currentTestCase = this;
291	>	if (methodFilter == null
292	>	|| methodFilter.matcher(toString()).find())
293	>	super.runBare();
294	>	}
295	>
296	>	protected void runTest() throws Throwable {
297	>	for (int i = 0; i < runsPerTest; i++) {
298	>	// currentRun = i;
299	>	if (profileTests)
300	>	runTestProfiled();
301	>	else
302	>	super.runTest();
303	>	}
304	>	}
305	>
306	>	protected void runTestProfiled() throws Throwable {
307	>	for (int i = 0; i < 2; i++) {
308	>	long startTime = System.nanoTime();
309	>	super.runTest();
310	>	long elapsedMillis = millisElapsedSince(startTime);
311	>	if (elapsedMillis < profileThreshold)
312	>	break;
313	>	// Never report first run of any test; treat it as a
314	>	// warmup run, notably to trigger all needed classloading,
315	>	if (i > 0)
316	>	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
317	>	}
318	>	}
319	>
320	>	/**
321	>	* Runs all JSR166 unit tests using junit.textui.TestRunner.
322	>	*/
323	>	public static void main(String[] args) {
324	>	main(suite(), args);
325	>	}
326	>
327	>	static class PithyResultPrinter extends junit.textui.ResultPrinter {
328	>	PithyResultPrinter(java.io.PrintStream writer) { super(writer); }
329	>	long runTime;
330	>	public void startTest(Test test) {}
331	>	protected void printHeader(long runTime) {
332	>	this.runTime = runTime; // defer printing for later
333	>	}
334	>	protected void printFooter(TestResult result) {
335	>	if (result.wasSuccessful()) {
336	>	getWriter().println("OK (" + result.runCount() + " tests)"
337	>	+ "  Time: " + elapsedTimeAsString(runTime));
338	>	} else {
339	>	getWriter().println("Time: " + elapsedTimeAsString(runTime));
340	>	super.printFooter(result);
341	>	}
342	>	}
343	>	}
344	>
345	>	/**
346	>	* Returns a TestRunner that doesn't bother with unnecessary
347	>	* fluff, like printing a "." for each test case.
348	>	*/
349	>	static junit.textui.TestRunner newPithyTestRunner() {
350	>	junit.textui.TestRunner runner = new junit.textui.TestRunner();
351	>	runner.setPrinter(new PithyResultPrinter(System.out));
352	>	return runner;
353	>	}
354	>
355	>	/**
356	>	* Runs all unit tests in the given test suite.
357	>	* Actual behavior influenced by jsr166.* system properties.
358	>	*/
359	>	static void main(Test suite, String[] args) {
360	>	if (useSecurityManager) {
361	>	System.err.println("Setting a permissive security manager");
362	>	Policy.setPolicy(permissivePolicy());
363	>	System.setSecurityManager(new SecurityManager());
364	>	}
365	>	for (int i = 0; i < suiteRuns; i++) {
366	>	TestResult result = newPithyTestRunner().doRun(suite);
367	>	if (!result.wasSuccessful())
368	>	System.exit(1);
369		System.gc();
370		System.runFinalization();
371		}
102	–	System.exit(0);
372		}
373
374	<	/**
375	<	* Collects all JSR166 unit tests as one suite
376	<	*/
377	<	public static Test suite ( ) {
378	<	TestSuite suite = new TestSuite("JSR166 Unit Tests");
374	>	public static TestSuite newTestSuite(Object... suiteOrClasses) {
375	>	TestSuite suite = new TestSuite();
376	>	for (Object suiteOrClass : suiteOrClasses) {
377	>	if (suiteOrClass instanceof TestSuite)
378	>	suite.addTest((TestSuite) suiteOrClass);
379	>	else if (suiteOrClass instanceof Class)
380	>	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
381	>	else
382	>	throw new ClassCastException("not a test suite or class");
383	>	}
384	>	return suite;
385	>	}
386	>
387	>	public static void addNamedTestClasses(TestSuite suite,
388	>	String... testClassNames) {
389	>	for (String testClassName : testClassNames) {
390	>	try {
391	>	Class<?> testClass = Class.forName(testClassName);
392	>	Method m = testClass.getDeclaredMethod("suite",
393	>	new Class<?>[0]);
394	>	suite.addTest(newTestSuite((Test)m.invoke(null)));
395	>	} catch (Exception e) {
396	>	throw new Error("Missing test class", e);
397	>	}
398	>	}
399	>	}
400
401	<	suite.addTest(new TestSuite(ForkJoinPoolTest.class));
402	<	suite.addTest(new TestSuite(ForkJoinTaskTest.class));
403	<	suite.addTest(new TestSuite(RecursiveActionTest.class));
404	<	suite.addTest(new TestSuite(RecursiveTaskTest.class));
405	<	suite.addTest(new TestSuite(LinkedTransferQueueTest.class));
406	<	suite.addTest(new TestSuite(PhaserTest.class));
407	<	suite.addTest(new TestSuite(ThreadLocalRandomTest.class));
408	<	suite.addTest(new TestSuite(AbstractExecutorServiceTest.class));
409	<	suite.addTest(new TestSuite(AbstractQueueTest.class));
410	<	suite.addTest(new TestSuite(AbstractQueuedSynchronizerTest.class));
411	<	suite.addTest(new TestSuite(AbstractQueuedLongSynchronizerTest.class));
412	<	suite.addTest(new TestSuite(ArrayBlockingQueueTest.class));
413	<	suite.addTest(new TestSuite(ArrayDequeTest.class));
414	<	suite.addTest(new TestSuite(AtomicBooleanTest.class));
415	<	suite.addTest(new TestSuite(AtomicIntegerArrayTest.class));
416	<	suite.addTest(new TestSuite(AtomicIntegerFieldUpdaterTest.class));
417	<	suite.addTest(new TestSuite(AtomicIntegerTest.class));
418	<	suite.addTest(new TestSuite(AtomicLongArrayTest.class));
419	<	suite.addTest(new TestSuite(AtomicLongFieldUpdaterTest.class));
420	<	suite.addTest(new TestSuite(AtomicLongTest.class));
421	<	suite.addTest(new TestSuite(AtomicMarkableReferenceTest.class));
422	<	suite.addTest(new TestSuite(AtomicReferenceArrayTest.class));
423	<	suite.addTest(new TestSuite(AtomicReferenceFieldUpdaterTest.class));
424	<	suite.addTest(new TestSuite(AtomicReferenceTest.class));
425	<	suite.addTest(new TestSuite(AtomicStampedReferenceTest.class));
426	<	suite.addTest(new TestSuite(ConcurrentHashMapTest.class));
427	<	suite.addTest(new TestSuite(ConcurrentLinkedQueueTest.class));
428	<	suite.addTest(new TestSuite(ConcurrentSkipListMapTest.class));
429	<	suite.addTest(new TestSuite(ConcurrentSkipListSubMapTest.class));
430	<	suite.addTest(new TestSuite(ConcurrentSkipListSetTest.class));
431	<	suite.addTest(new TestSuite(ConcurrentSkipListSubSetTest.class));
432	<	suite.addTest(new TestSuite(CopyOnWriteArrayListTest.class));
433	<	suite.addTest(new TestSuite(CopyOnWriteArraySetTest.class));
434	<	suite.addTest(new TestSuite(CountDownLatchTest.class));
435	<	suite.addTest(new TestSuite(CyclicBarrierTest.class));
436	<	suite.addTest(new TestSuite(DelayQueueTest.class));
437	<	suite.addTest(new TestSuite(EntryTest.class));
438	<	suite.addTest(new TestSuite(ExchangerTest.class));
439	<	suite.addTest(new TestSuite(ExecutorsTest.class));
440	<	suite.addTest(new TestSuite(ExecutorCompletionServiceTest.class));
441	<	suite.addTest(new TestSuite(FutureTaskTest.class));
442	<	suite.addTest(new TestSuite(LinkedBlockingDequeTest.class));
443	<	suite.addTest(new TestSuite(LinkedBlockingQueueTest.class));
444	<	suite.addTest(new TestSuite(LinkedListTest.class));
445	<	suite.addTest(new TestSuite(LockSupportTest.class));
446	<	suite.addTest(new TestSuite(PriorityBlockingQueueTest.class));
447	<	suite.addTest(new TestSuite(PriorityQueueTest.class));
448	<	suite.addTest(new TestSuite(ReentrantLockTest.class));
449	<	suite.addTest(new TestSuite(ReentrantReadWriteLockTest.class));
450	<	suite.addTest(new TestSuite(ScheduledExecutorTest.class));
451	<	suite.addTest(new TestSuite(ScheduledExecutorSubclassTest.class));
452	<	suite.addTest(new TestSuite(SemaphoreTest.class));
453	<	suite.addTest(new TestSuite(SynchronousQueueTest.class));
454	<	suite.addTest(new TestSuite(SystemTest.class));
455	<	suite.addTest(new TestSuite(ThreadLocalTest.class));
456	<	suite.addTest(new TestSuite(ThreadPoolExecutorTest.class));
457	<	suite.addTest(new TestSuite(ThreadPoolExecutorSubclassTest.class));
458	<	suite.addTest(new TestSuite(ThreadTest.class));
459	<	suite.addTest(new TestSuite(TimeUnitTest.class));
460	<	suite.addTest(new TestSuite(TreeMapTest.class));
461	<	suite.addTest(new TestSuite(TreeSetTest.class));
462	<	suite.addTest(new TestSuite(TreeSubMapTest.class));
463	<	suite.addTest(new TestSuite(TreeSubSetTest.class));
401	>	public static final double JAVA_CLASS_VERSION;
402	>	public static final String JAVA_SPECIFICATION_VERSION;
403	>	static {
404	>	try {
405	>	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
406	>	new java.security.PrivilegedAction<Double>() {
407	>	public Double run() {
408	>	return Double.valueOf(System.getProperty("java.class.version"));}});
409	>	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
410	>	new java.security.PrivilegedAction<String>() {
411	>	public String run() {
412	>	return System.getProperty("java.specification.version");}});
413	>	} catch (Throwable t) {
414	>	throw new Error(t);
415	>	}
416	>	}
417	>
418	>	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
419	>	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
420	>	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
421	>	public static boolean atLeastJava9() {
422	>	return JAVA_CLASS_VERSION >= 53.0
423	>	// As of 2015-09, java9 still uses 52.0 class file version
424	>	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?(9|[0-9][0-9])$");
425	>	}
426	>	public static boolean atLeastJava10() {
427	>	return JAVA_CLASS_VERSION >= 54.0
428	>	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?[0-9][0-9]$");
429	>	}
430	>
431	>	/**
432	>	* Collects all JSR166 unit tests as one suite.
433	>	*/
434	>	public static Test suite() {
435	>	// Java7+ test classes
436	>	TestSuite suite = newTestSuite(
437	>	ForkJoinPoolTest.suite(),
438	>	ForkJoinTaskTest.suite(),
439	>	RecursiveActionTest.suite(),
440	>	RecursiveTaskTest.suite(),
441	>	LinkedTransferQueueTest.suite(),
442	>	PhaserTest.suite(),
443	>	ThreadLocalRandomTest.suite(),
444	>	AbstractExecutorServiceTest.suite(),
445	>	AbstractQueueTest.suite(),
446	>	AbstractQueuedSynchronizerTest.suite(),
447	>	AbstractQueuedLongSynchronizerTest.suite(),
448	>	ArrayBlockingQueueTest.suite(),
449	>	ArrayDequeTest.suite(),
450	>	ArrayListTest.suite(),
451	>	AtomicBooleanTest.suite(),
452	>	AtomicIntegerArrayTest.suite(),
453	>	AtomicIntegerFieldUpdaterTest.suite(),
454	>	AtomicIntegerTest.suite(),
455	>	AtomicLongArrayTest.suite(),
456	>	AtomicLongFieldUpdaterTest.suite(),
457	>	AtomicLongTest.suite(),
458	>	AtomicMarkableReferenceTest.suite(),
459	>	AtomicReferenceArrayTest.suite(),
460	>	AtomicReferenceFieldUpdaterTest.suite(),
461	>	AtomicReferenceTest.suite(),
462	>	AtomicStampedReferenceTest.suite(),
463	>	ConcurrentHashMapTest.suite(),
464	>	ConcurrentLinkedDequeTest.suite(),
465	>	ConcurrentLinkedQueueTest.suite(),
466	>	ConcurrentSkipListMapTest.suite(),
467	>	ConcurrentSkipListSubMapTest.suite(),
468	>	ConcurrentSkipListSetTest.suite(),
469	>	ConcurrentSkipListSubSetTest.suite(),
470	>	CopyOnWriteArrayListTest.suite(),
471	>	CopyOnWriteArraySetTest.suite(),
472	>	CountDownLatchTest.suite(),
473	>	CountedCompleterTest.suite(),
474	>	CyclicBarrierTest.suite(),
475	>	DelayQueueTest.suite(),
476	>	EntryTest.suite(),
477	>	ExchangerTest.suite(),
478	>	ExecutorsTest.suite(),
479	>	ExecutorCompletionServiceTest.suite(),
480	>	FutureTaskTest.suite(),
481	>	LinkedBlockingDequeTest.suite(),
482	>	LinkedBlockingQueueTest.suite(),
483	>	LinkedListTest.suite(),
484	>	LockSupportTest.suite(),
485	>	PriorityBlockingQueueTest.suite(),
486	>	PriorityQueueTest.suite(),
487	>	ReentrantLockTest.suite(),
488	>	ReentrantReadWriteLockTest.suite(),
489	>	ScheduledExecutorTest.suite(),
490	>	ScheduledExecutorSubclassTest.suite(),
491	>	SemaphoreTest.suite(),
492	>	SynchronousQueueTest.suite(),
493	>	SystemTest.suite(),
494	>	ThreadLocalTest.suite(),
495	>	ThreadPoolExecutorTest.suite(),
496	>	ThreadPoolExecutorSubclassTest.suite(),
497	>	ThreadTest.suite(),
498	>	TimeUnitTest.suite(),
499	>	TreeMapTest.suite(),
500	>	TreeSetTest.suite(),
501	>	TreeSubMapTest.suite(),
502	>	TreeSubSetTest.suite());
503	>
504	>	// Java8+ test classes
505	>	if (atLeastJava8()) {
506	>	String[] java8TestClassNames = {
507	>	"Atomic8Test",
508	>	"CompletableFutureTest",
509	>	"ConcurrentHashMap8Test",
510	>	"CountedCompleter8Test",
511	>	"DoubleAccumulatorTest",
512	>	"DoubleAdderTest",
513	>	"ForkJoinPool8Test",
514	>	"ForkJoinTask8Test",
515	>	"LongAccumulatorTest",
516	>	"LongAdderTest",
517	>	"SplittableRandomTest",
518	>	"StampedLockTest",
519	>	"SubmissionPublisherTest",
520	>	"ThreadLocalRandom8Test",
521	>	"TimeUnit8Test",
522	>	};
523	>	addNamedTestClasses(suite, java8TestClassNames);
524	>	}
525	>
526	>	// Java9+ test classes
527	>	if (atLeastJava9()) {
528	>	String[] java9TestClassNames = {
529	>	"AtomicBoolean9Test",
530	>	"AtomicInteger9Test",
531	>	"AtomicIntegerArray9Test",
532	>	"AtomicLong9Test",
533	>	"AtomicLongArray9Test",
534	>	"AtomicReference9Test",
535	>	"AtomicReferenceArray9Test",
536	>	"ExecutorCompletionService9Test",
537	>	};
538	>	addNamedTestClasses(suite, java9TestClassNames);
539	>	}
540
541		return suite;
542		}
543
544	+	/** Returns list of junit-style test method names in given class. */
545	+	public static ArrayList<String> testMethodNames(Class<?> testClass) {
546	+	Method[] methods = testClass.getDeclaredMethods();
547	+	ArrayList<String> names = new ArrayList<String>(methods.length);
548	+	for (Method method : methods) {
549	+	if (method.getName().startsWith("test")
550	+	&& Modifier.isPublic(method.getModifiers())
551	+	// method.getParameterCount() requires jdk8+
552	+	&& method.getParameterTypes().length == 0) {
553	+	names.add(method.getName());
554	+	}
555	+	}
556	+	return names;
557	+	}
558	+
559	+	/**
560	+	* Returns junit-style testSuite for the given test class, but
561	+	* parameterized by passing extra data to each test.
562	+	*/
563	+	public static <ExtraData> Test parameterizedTestSuite
564	+	(Class<? extends JSR166TestCase> testClass,
565	+	Class<ExtraData> dataClass,
566	+	ExtraData data) {
567	+	try {
568	+	TestSuite suite = new TestSuite();
569	+	Constructor c =
570	+	testClass.getDeclaredConstructor(dataClass, String.class);
571	+	for (String methodName : testMethodNames(testClass))
572	+	suite.addTest((Test) c.newInstance(data, methodName));
573	+	return suite;
574	+	} catch (Exception e) {
575	+	throw new Error(e);
576	+	}
577	+	}
578	+
579	+	/**
580	+	* Returns junit-style testSuite for the jdk8 extension of the
581	+	* given test class, but parameterized by passing extra data to
582	+	* each test.  Uses reflection to allow compilation in jdk7.
583	+	*/
584	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
585	+	(Class<? extends JSR166TestCase> testClass,
586	+	Class<ExtraData> dataClass,
587	+	ExtraData data) {
588	+	if (atLeastJava8()) {
589	+	String name = testClass.getName();
590	+	String name8 = name.replaceAll("Test$", "8Test");
591	+	if (name.equals(name8)) throw new Error(name);
592	+	try {
593	+	return (Test)
594	+	Class.forName(name8)
595	+	.getMethod("testSuite", new Class[] { dataClass })
596	+	.invoke(null, data);
597	+	} catch (Exception e) {
598	+	throw new Error(e);
599	+	}
600	+	} else {
601	+	return new TestSuite();
602	+	}
603	+	}
604	+
605	+	// Delays for timing-dependent tests, in milliseconds.
606
607		public static long SHORT_DELAY_MS;
608		public static long SMALL_DELAY_MS;
609		public static long MEDIUM_DELAY_MS;
610		public static long LONG_DELAY_MS;
611
184	–
612		/**
613	<	* Returns the shortest timed delay. This could
614	<	* be reimplemented to use for example a Property.
613	>	* Returns the shortest timed delay. This can be scaled up for
614	>	* slow machines using the jsr166.delay.factor system property,
615	>	* or via jtreg's -timeoutFactor: flag.
616	>	* http://openjdk.java.net/jtreg/command-help.html
617		*/
618		protected long getShortDelay() {
619	<	return 50;
619	>	return (long) (50 * delayFactor);
620		}
621
193	–
622		/**
623		* Sets delays as multiples of SHORT_DELAY.
624		*/
625	<	protected  void setDelays() {
625	>	protected void setDelays() {
626		SHORT_DELAY_MS = getShortDelay();
627	<	SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
627	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
628		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
629	<	LONG_DELAY_MS = SHORT_DELAY_MS * 50;
629	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
630		}
631
632		/**
633	<	* Flag set true if any threadAssert methods fail
633	>	* Returns a timeout in milliseconds to be used in tests that
634	>	* verify that operations block or time out.
635		*/
636	<	volatile boolean threadFailed;
636	>	long timeoutMillis() {
637	>	return SHORT_DELAY_MS / 4;
638	>	}
639
640		/**
641	<	* Initializes test to indicate that no thread assertions have failed
641	>	* Returns a new Date instance representing a time at least
642	>	* delayMillis milliseconds in the future.
643		*/
644	+	Date delayedDate(long delayMillis) {
645	+	// Add 1 because currentTimeMillis is known to round into the past.
646	+	return new Date(System.currentTimeMillis() + delayMillis + 1);
647	+	}
648	+
649	+	/**
650	+	* The first exception encountered if any threadAssertXXX method fails.
651	+	*/
652	+	private final AtomicReference<Throwable> threadFailure
653	+	= new AtomicReference<Throwable>(null);
654	+
655	+	/**
656	+	* Records an exception so that it can be rethrown later in the test
657	+	* harness thread, triggering a test case failure.  Only the first
658	+	* failure is recorded; subsequent calls to this method from within
659	+	* the same test have no effect.
660	+	*/
661	+	public void threadRecordFailure(Throwable t) {
662	+	System.err.println(t);
663	+	dumpTestThreads();
664	+	threadFailure.compareAndSet(null, t);
665	+	}
666	+
667		public void setUp() {
668		setDelays();
669	<	threadFailed = false;
669	>	}
670	>
671	>	void tearDownFail(String format, Object... args) {
672	>	String msg = toString() + ": " + String.format(format, args);
673	>	System.err.println(msg);
674	>	dumpTestThreads();
675	>	throw new AssertionFailedError(msg);
676		}
677
678		/**
679	<	* Triggers test case failure if any thread assertions have failed
679	>	* Extra checks that get done for all test cases.
680	>	*
681	>	* Triggers test case failure if any thread assertions have failed,
682	>	* by rethrowing, in the test harness thread, any exception recorded
683	>	* earlier by threadRecordFailure.
684	>	*
685	>	* Triggers test case failure if interrupt status is set in the main thread.
686		*/
687	<	public void tearDown() {
688	<	assertFalse(threadFailed);
687	>	public void tearDown() throws Exception {
688	>	Throwable t = threadFailure.getAndSet(null);
689	>	if (t != null) {
690	>	if (t instanceof Error)
691	>	throw (Error) t;
692	>	else if (t instanceof RuntimeException)
693	>	throw (RuntimeException) t;
694	>	else if (t instanceof Exception)
695	>	throw (Exception) t;
696	>	else {
697	>	AssertionFailedError afe =
698	>	new AssertionFailedError(t.toString());
699	>	afe.initCause(t);
700	>	throw afe;
701	>	}
702	>	}
703	>
704	>	if (Thread.interrupted())
705	>	tearDownFail("interrupt status set in main thread");
706	>
707	>	checkForkJoinPoolThreadLeaks();
708		}
709
710		/**
711	<	* Fail, also setting status to indicate current testcase should fail
711	>	* Finds missing PoolCleaners
712	>	*/
713	>	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
714	>	Thread[] survivors = new Thread[7];
715	>	int count = Thread.enumerate(survivors);
716	>	for (int i = 0; i < count; i++) {
717	>	Thread thread = survivors[i];
718	>	String name = thread.getName();
719	>	if (name.startsWith("ForkJoinPool-")) {
720	>	// give thread some time to terminate
721	>	thread.join(LONG_DELAY_MS);
722	>	if (thread.isAlive())
723	>	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
724	>	thread);
725	>	}
726	>	}
727	>
728	>	if (!ForkJoinPool.commonPool()
729	>	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
730	>	tearDownFail("ForkJoin common pool thread stuck");
731	>	}
732	>
733	>	/**
734	>	* Just like fail(reason), but additionally recording (using
735	>	* threadRecordFailure) any AssertionFailedError thrown, so that
736	>	* the current testcase will fail.
737		*/
738		public void threadFail(String reason) {
739	<	threadFailed = true;
740	<	fail(reason);
739	>	try {
740	>	fail(reason);
741	>	} catch (AssertionFailedError t) {
742	>	threadRecordFailure(t);
743	>	throw t;
744	>	}
745		}
746
747		/**
748	<	* If expression not true, set status to indicate current testcase
749	<	* should fail
748	>	* Just like assertTrue(b), but additionally recording (using
749	>	* threadRecordFailure) any AssertionFailedError thrown, so that
750	>	* the current testcase will fail.
751		*/
752		public void threadAssertTrue(boolean b) {
753	<	if (!b) {
238	<	threadFailed = true;
753	>	try {
754		assertTrue(b);
755	+	} catch (AssertionFailedError t) {
756	+	threadRecordFailure(t);
757	+	throw t;
758		}
759		}
760
761		/**
762	<	* If expression not false, set status to indicate current testcase
763	<	* should fail
762	>	* Just like assertFalse(b), but additionally recording (using
763	>	* threadRecordFailure) any AssertionFailedError thrown, so that
764	>	* the current testcase will fail.
765		*/
766		public void threadAssertFalse(boolean b) {
767	<	if (b) {
249	<	threadFailed = true;
767	>	try {
768		assertFalse(b);
769	+	} catch (AssertionFailedError t) {
770	+	threadRecordFailure(t);
771	+	throw t;
772		}
773		}
774
775		/**
776	<	* If argument not null, set status to indicate current testcase
777	<	* should fail
776	>	* Just like assertNull(x), but additionally recording (using
777	>	* threadRecordFailure) any AssertionFailedError thrown, so that
778	>	* the current testcase will fail.
779		*/
780		public void threadAssertNull(Object x) {
781	<	if (x != null) {
260	<	threadFailed = true;
781	>	try {
782		assertNull(x);
783	+	} catch (AssertionFailedError t) {
784	+	threadRecordFailure(t);
785	+	throw t;
786		}
787		}
788
789		/**
790	<	* If arguments not equal, set status to indicate current testcase
791	<	* should fail
790	>	* Just like assertEquals(x, y), but additionally recording (using
791	>	* threadRecordFailure) any AssertionFailedError thrown, so that
792	>	* the current testcase will fail.
793		*/
794		public void threadAssertEquals(long x, long y) {
795	<	if (x != y) {
271	<	threadFailed = true;
795	>	try {
796		assertEquals(x, y);
797	+	} catch (AssertionFailedError t) {
798	+	threadRecordFailure(t);
799	+	throw t;
800		}
801		}
802
803		/**
804	<	* If arguments not equal, set status to indicate current testcase
805	<	* should fail
804	>	* Just like assertEquals(x, y), but additionally recording (using
805	>	* threadRecordFailure) any AssertionFailedError thrown, so that
806	>	* the current testcase will fail.
807		*/
808		public void threadAssertEquals(Object x, Object y) {
809	<	if (x != y && (x == null || !x.equals(y))) {
282	<	threadFailed = true;
809	>	try {
810		assertEquals(x, y);
811	+	} catch (AssertionFailedError fail) {
812	+	threadRecordFailure(fail);
813	+	throw fail;
814	+	} catch (Throwable fail) {
815	+	threadUnexpectedException(fail);
816		}
817		}
818
819		/**
820	<	* threadFail with message "should throw exception"
820	>	* Just like assertSame(x, y), but additionally recording (using
821	>	* threadRecordFailure) any AssertionFailedError thrown, so that
822	>	* the current testcase will fail.
823		*/
824	<	public void threadShouldThrow() {
824	>	public void threadAssertSame(Object x, Object y) {
825		try {
826	<	threadFailed = true;
827	<	fail("should throw exception");
828	<	} catch (AssertionFailedError e) {
829	<	e.printStackTrace();
296	<	throw e;
826	>	assertSame(x, y);
827	>	} catch (AssertionFailedError fail) {
828	>	threadRecordFailure(fail);
829	>	throw fail;
830		}
831		}
832
833		/**
834	<	* threadFail with message "Unexpected exception"
834	>	* Calls threadFail with message "should throw exception".
835	>	*/
836	>	public void threadShouldThrow() {
837	>	threadFail("should throw exception");
838	>	}
839	>
840	>	/**
841	>	* Calls threadFail with message "should throw" + exceptionName.
842		*/
843	<	public void threadUnexpectedException() {
844	<	threadFailed = true;
305	<	fail("Unexpected exception");
843	>	public void threadShouldThrow(String exceptionName) {
844	>	threadFail("should throw " + exceptionName);
845		}
846
847		/**
848	<	* threadFail with message "Unexpected exception", with argument
848	>	* Records the given exception using {@link #threadRecordFailure},
849	>	* then rethrows the exception, wrapping it in an
850	>	* AssertionFailedError if necessary.
851		*/
852	<	public void threadUnexpectedException(Throwable ex) {
853	<	threadFailed = true;
854	<	ex.printStackTrace();
855	<	fail("Unexpected exception: " + ex);
852	>	public void threadUnexpectedException(Throwable t) {
853	>	threadRecordFailure(t);
854	>	t.printStackTrace();
855	>	if (t instanceof RuntimeException)
856	>	throw (RuntimeException) t;
857	>	else if (t instanceof Error)
858	>	throw (Error) t;
859	>	else {
860	>	AssertionFailedError afe =
861	>	new AssertionFailedError("unexpected exception: " + t);
862	>	afe.initCause(t);
863	>	throw afe;
864	>	}
865		}
866
867		/**
868	<	* Wait out termination of a thread pool or fail doing so
868	>	* Delays, via Thread.sleep, for the given millisecond delay, but
869	>	* if the sleep is shorter than specified, may re-sleep or yield
870	>	* until time elapses.  Ensures that the given time, as measured
871	>	* by System.nanoTime(), has elapsed.
872		*/
873	<	public void joinPool(ExecutorService exec) {
873	>	static void delay(long millis) throws InterruptedException {
874	>	long nanos = millis * (1000 * 1000);
875	>	final long wakeupTime = System.nanoTime() + nanos;
876	>	do {
877	>	if (millis > 0L)
878	>	Thread.sleep(millis);
879	>	else // too short to sleep
880	>	Thread.yield();
881	>	nanos = wakeupTime - System.nanoTime();
882	>	millis = nanos / (1000 * 1000);
883	>	} while (nanos >= 0L);
884	>	}
885	>
886	>	/**
887	>	* Allows use of try-with-resources with per-test thread pools.
888	>	*/
889	>	class PoolCleaner implements AutoCloseable {
890	>	private final ExecutorService pool;
891	>	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
892	>	public void close() { joinPool(pool); }
893	>	}
894	>
895	>	/**
896	>	* An extension of PoolCleaner that has an action to release the pool.
897	>	*/
898	>	class PoolCleanerWithReleaser extends PoolCleaner {
899	>	private final Runnable releaser;
900	>	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
901	>	super(pool);
902	>	this.releaser = releaser;
903	>	}
904	>	public void close() {
905	>	try {
906	>	releaser.run();
907	>	} finally {
908	>	super.close();
909	>	}
910	>	}
911	>	}
912	>
913	>	PoolCleaner cleaner(ExecutorService pool) {
914	>	return new PoolCleaner(pool);
915	>	}
916	>
917	>	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
918	>	return new PoolCleanerWithReleaser(pool, releaser);
919	>	}
920	>
921	>	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
922	>	return new PoolCleanerWithReleaser(pool, releaser(latch));
923	>	}
924	>
925	>	Runnable releaser(final CountDownLatch latch) {
926	>	return new Runnable() { public void run() {
927	>	do { latch.countDown(); }
928	>	while (latch.getCount() > 0);
929	>	}};
930	>	}
931	>
932	>	PoolCleaner cleaner(ExecutorService pool, AtomicBoolean flag) {
933	>	return new PoolCleanerWithReleaser(pool, releaser(flag));
934	>	}
935	>
936	>	Runnable releaser(final AtomicBoolean flag) {
937	>	return new Runnable() { public void run() { flag.set(true); }};
938	>	}
939	>
940	>	/**
941	>	* Waits out termination of a thread pool or fails doing so.
942	>	*/
943	>	void joinPool(ExecutorService pool) {
944		try {
945	<	exec.shutdown();
946	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
945	>	pool.shutdown();
946	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
947	>	try {
948	>	threadFail("ExecutorService " + pool +
949	>	" did not terminate in a timely manner");
950	>	} finally {
951	>	// last resort, for the benefit of subsequent tests
952	>	pool.shutdownNow();
953	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
954	>	}
955	>	}
956		} catch (SecurityException ok) {
957		// Allowed in case test doesn't have privs
958	<	} catch (InterruptedException ie) {
959	<	fail("Unexpected exception");
958	>	} catch (InterruptedException fail) {
959	>	threadFail("Unexpected InterruptedException");
960	>	}
961	>	}
962	>
963	>	/**
964	>	* Like Runnable, but with the freedom to throw anything.
965	>	* junit folks had the same idea:
966	>	* http://junit.org/junit5/docs/snapshot/api/org/junit/gen5/api/Executable.html
967	>	*/
968	>	interface Action { public void run() throws Throwable; }
969	>
970	>	/**
971	>	* Runs all the given actions in parallel, failing if any fail.
972	>	* Useful for running multiple variants of tests that are
973	>	* necessarily individually slow because they must block.
974	>	*/
975	>	void testInParallel(Action ... actions) {
976	>	ExecutorService pool = Executors.newCachedThreadPool();
977	>	try (PoolCleaner cleaner = cleaner(pool)) {
978	>	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
979	>	for (final Action action : actions)
980	>	futures.add(pool.submit(new CheckedRunnable() {
981	>	public void realRun() throws Throwable { action.run();}}));
982	>	for (Future<?> future : futures)
983	>	try {
984	>	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
985	>	} catch (ExecutionException ex) {
986	>	threadUnexpectedException(ex.getCause());
987	>	} catch (Exception ex) {
988	>	threadUnexpectedException(ex);
989	>	}
990	>	}
991	>	}
992	>
993	>	/**
994	>	* A debugging tool to print stack traces of most threads, as jstack does.
995	>	* Uninteresting threads are filtered out.
996	>	*/
997	>	static void dumpTestThreads() {
998	>	SecurityManager sm = System.getSecurityManager();
999	>	if (sm != null) {
1000	>	try {
1001	>	System.setSecurityManager(null);
1002	>	} catch (SecurityException giveUp) {
1003	>	return;
1004	>	}
1005	>	}
1006	>
1007	>	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
1008	>	System.err.println("------ stacktrace dump start ------");
1009	>	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
1010	>	final String name = info.getThreadName();
1011	>	String lockName;
1012	>	if ("Signal Dispatcher".equals(name))
1013	>	continue;
1014	>	if ("Reference Handler".equals(name)
1015	>	&& (lockName = info.getLockName()) != null
1016	>	&& lockName.startsWith("java.lang.ref.Reference$Lock"))
1017	>	continue;
1018	>	if ("Finalizer".equals(name)
1019	>	&& (lockName = info.getLockName()) != null
1020	>	&& lockName.startsWith("java.lang.ref.ReferenceQueue$Lock"))
1021	>	continue;
1022	>	if ("checkForWedgedTest".equals(name))
1023	>	continue;
1024	>	System.err.print(info);
1025		}
1026	+	System.err.println("------ stacktrace dump end ------");
1027	+
1028	+	if (sm != null) System.setSecurityManager(sm);
1029		}
1030
1031	+	/**
1032	+	* Checks that thread does not terminate within the default
1033	+	* millisecond delay of {@code timeoutMillis()}.
1034	+	*/
1035	+	void assertThreadStaysAlive(Thread thread) {
1036	+	assertThreadStaysAlive(thread, timeoutMillis());
1037	+	}
1038
1039		/**
1040	<	* fail with message "should throw exception"
1040	>	* Checks that thread does not terminate within the given millisecond delay.
1041	>	*/
1042	>	void assertThreadStaysAlive(Thread thread, long millis) {
1043	>	try {
1044	>	// No need to optimize the failing case via Thread.join.
1045	>	delay(millis);
1046	>	assertTrue(thread.isAlive());
1047	>	} catch (InterruptedException fail) {
1048	>	threadFail("Unexpected InterruptedException");
1049	>	}
1050	>	}
1051	>
1052	>	/**
1053	>	* Checks that the threads do not terminate within the default
1054	>	* millisecond delay of {@code timeoutMillis()}.
1055	>	*/
1056	>	void assertThreadsStayAlive(Thread... threads) {
1057	>	assertThreadsStayAlive(timeoutMillis(), threads);
1058	>	}
1059	>
1060	>	/**
1061	>	* Checks that the threads do not terminate within the given millisecond delay.
1062	>	*/
1063	>	void assertThreadsStayAlive(long millis, Thread... threads) {
1064	>	try {
1065	>	// No need to optimize the failing case via Thread.join.
1066	>	delay(millis);
1067	>	for (Thread thread : threads)
1068	>	assertTrue(thread.isAlive());
1069	>	} catch (InterruptedException fail) {
1070	>	threadFail("Unexpected InterruptedException");
1071	>	}
1072	>	}
1073	>
1074	>	/**
1075	>	* Checks that future.get times out, with the default timeout of
1076	>	* {@code timeoutMillis()}.
1077	>	*/
1078	>	void assertFutureTimesOut(Future future) {
1079	>	assertFutureTimesOut(future, timeoutMillis());
1080	>	}
1081	>
1082	>	/**
1083	>	* Checks that future.get times out, with the given millisecond timeout.
1084	>	*/
1085	>	void assertFutureTimesOut(Future future, long timeoutMillis) {
1086	>	long startTime = System.nanoTime();
1087	>	try {
1088	>	future.get(timeoutMillis, MILLISECONDS);
1089	>	shouldThrow();
1090	>	} catch (TimeoutException success) {
1091	>	} catch (Exception fail) {
1092	>	threadUnexpectedException(fail);
1093	>	} finally { future.cancel(true); }
1094	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
1095	>	}
1096	>
1097	>	/**
1098	>	* Fails with message "should throw exception".
1099		*/
1100		public void shouldThrow() {
1101		fail("Should throw exception");
1102		}
1103
1104		/**
1105	<	* fail with message "Unexpected exception"
1105	>	* Fails with message "should throw " + exceptionName.
1106		*/
1107	<	public void unexpectedException() {
1108	<	fail("Unexpected exception");
1107	>	public void shouldThrow(String exceptionName) {
1108	>	fail("Should throw " + exceptionName);
1109		}
1110
346	–
1111		/**
1112		* The number of elements to place in collections, arrays, etc.
1113		*/
1114	<	static final int SIZE = 20;
1114	>	public static final int SIZE = 20;
1115
1116		// Some convenient Integer constants
1117
1118	<	static final Integer zero = new Integer(0);
1119	<	static final Integer one = new Integer(1);
1120	<	static final Integer two = new Integer(2);
1121	<	static final Integer three  = new Integer(3);
1122	<	static final Integer four  = new Integer(4);
1123	<	static final Integer five  = new Integer(5);
1124	<	static final Integer six = new Integer(6);
1125	<	static final Integer seven = new Integer(7);
1126	<	static final Integer eight = new Integer(8);
1127	<	static final Integer nine = new Integer(9);
1128	<	static final Integer m1  = new Integer(-1);
1129	<	static final Integer m2  = new Integer(-2);
1130	<	static final Integer m3  = new Integer(-3);
1131	<	static final Integer m4 = new Integer(-4);
1132	<	static final Integer m5 = new Integer(-5);
1133	<	static final Integer m6 = new Integer(-6);
1134	<	static final Integer m10 = new Integer(-10);
1118	>	public static final Integer zero  = new Integer(0);
1119	>	public static final Integer one   = new Integer(1);
1120	>	public static final Integer two   = new Integer(2);
1121	>	public static final Integer three = new Integer(3);
1122	>	public static final Integer four  = new Integer(4);
1123	>	public static final Integer five  = new Integer(5);
1124	>	public static final Integer six   = new Integer(6);
1125	>	public static final Integer seven = new Integer(7);
1126	>	public static final Integer eight = new Integer(8);
1127	>	public static final Integer nine  = new Integer(9);
1128	>	public static final Integer m1  = new Integer(-1);
1129	>	public static final Integer m2  = new Integer(-2);
1130	>	public static final Integer m3  = new Integer(-3);
1131	>	public static final Integer m4  = new Integer(-4);
1132	>	public static final Integer m5  = new Integer(-5);
1133	>	public static final Integer m6  = new Integer(-6);
1134	>	public static final Integer m10 = new Integer(-10);
1135	>
1136	>	/**
1137	>	* Runs Runnable r with a security policy that permits precisely
1138	>	* the specified permissions.  If there is no current security
1139	>	* manager, the runnable is run twice, both with and without a
1140	>	* security manager.  We require that any security manager permit
1141	>	* getPolicy/setPolicy.
1142	>	*/
1143	>	public void runWithPermissions(Runnable r, Permission... permissions) {
1144	>	SecurityManager sm = System.getSecurityManager();
1145	>	if (sm == null) {
1146	>	r.run();
1147	>	}
1148	>	runWithSecurityManagerWithPermissions(r, permissions);
1149	>	}
1150	>
1151	>	/**
1152	>	* Runs Runnable r with a security policy that permits precisely
1153	>	* the specified permissions.  If there is no current security
1154	>	* manager, a temporary one is set for the duration of the
1155	>	* Runnable.  We require that any security manager permit
1156	>	* getPolicy/setPolicy.
1157	>	*/
1158	>	public void runWithSecurityManagerWithPermissions(Runnable r,
1159	>	Permission... permissions) {
1160	>	SecurityManager sm = System.getSecurityManager();
1161	>	if (sm == null) {
1162	>	Policy savedPolicy = Policy.getPolicy();
1163	>	try {
1164	>	Policy.setPolicy(permissivePolicy());
1165	>	System.setSecurityManager(new SecurityManager());
1166	>	runWithSecurityManagerWithPermissions(r, permissions);
1167	>	} finally {
1168	>	System.setSecurityManager(null);
1169	>	Policy.setPolicy(savedPolicy);
1170	>	}
1171	>	} else {
1172	>	Policy savedPolicy = Policy.getPolicy();
1173	>	AdjustablePolicy policy = new AdjustablePolicy(permissions);
1174	>	Policy.setPolicy(policy);
1175	>
1176	>	try {
1177	>	r.run();
1178	>	} finally {
1179	>	policy.addPermission(new SecurityPermission("setPolicy"));
1180	>	Policy.setPolicy(savedPolicy);
1181	>	}
1182	>	}
1183	>	}
1184
1185	+	/**
1186	+	* Runs a runnable without any permissions.
1187	+	*/
1188	+	public void runWithoutPermissions(Runnable r) {
1189	+	runWithPermissions(r);
1190	+	}
1191
1192		/**
1193		* A security policy where new permissions can be dynamically added
1194		* or all cleared.
1195		*/
1196	<	static class AdjustablePolicy extends java.security.Policy {
1196	>	public static class AdjustablePolicy extends java.security.Policy {
1197		Permissions perms = new Permissions();
1198	<	AdjustablePolicy() { }
1198	>	AdjustablePolicy(Permission... permissions) {
1199	>	for (Permission permission : permissions)
1200	>	perms.add(permission);
1201	>	}
1202		void addPermission(Permission perm) { perms.add(perm); }
1203		void clearPermissions() { perms = new Permissions(); }
1204	<	public PermissionCollection getPermissions(CodeSource cs) {
1205	<	return perms;
1206	<	}
1207	<	public PermissionCollection getPermissions(ProtectionDomain pd) {
1208	<	return perms;
1209	<	}
1210	<	public boolean implies(ProtectionDomain pd, Permission p) {
1211	<	return perms.implies(p);
1212	<	}
1213	<	public void refresh() {}
1204	>	public PermissionCollection getPermissions(CodeSource cs) {
1205	>	return perms;
1206	>	}
1207	>	public PermissionCollection getPermissions(ProtectionDomain pd) {
1208	>	return perms;
1209	>	}
1210	>	public boolean implies(ProtectionDomain pd, Permission p) {
1211	>	return perms.implies(p);
1212	>	}
1213	>	public void refresh() {}
1214	>	public String toString() {
1215	>	List<Permission> ps = new ArrayList<Permission>();
1216	>	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1217	>	ps.add(e.nextElement());
1218	>	return "AdjustablePolicy with permissions " + ps;
1219	>	}
1220		}
1221
1222	+	/**
1223	+	* Returns a policy containing all the permissions we ever need.
1224	+	*/
1225	+	public static Policy permissivePolicy() {
1226	+	return new AdjustablePolicy
1227	+	// Permissions j.u.c. needs directly
1228	+	(new RuntimePermission("modifyThread"),
1229	+	new RuntimePermission("getClassLoader"),
1230	+	new RuntimePermission("setContextClassLoader"),
1231	+	// Permissions needed to change permissions!
1232	+	new SecurityPermission("getPolicy"),
1233	+	new SecurityPermission("setPolicy"),
1234	+	new RuntimePermission("setSecurityManager"),
1235	+	// Permissions needed by the junit test harness
1236	+	new RuntimePermission("accessDeclaredMembers"),
1237	+	new PropertyPermission("*", "read"),
1238	+	new java.io.FilePermission("<<ALL FILES>>", "read"));
1239	+	}
1240
1241	<	// Some convenient Runnable classes
1241	>	/**
1242	>	* Sleeps until the given time has elapsed.
1243	>	* Throws AssertionFailedError if interrupted.
1244	>	*/
1245	>	static void sleep(long millis) {
1246	>	try {
1247	>	delay(millis);
1248	>	} catch (InterruptedException fail) {
1249	>	AssertionFailedError afe =
1250	>	new AssertionFailedError("Unexpected InterruptedException");
1251	>	afe.initCause(fail);
1252	>	throw afe;
1253	>	}
1254	>	}
1255
1256	<	static class NoOpRunnable implements Runnable {
1257	<	public void run() {}
1256	>	/**
1257	>	* Spin-waits up to the specified number of milliseconds for the given
1258	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1259	>	*/
1260	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1261	>	long startTime = 0L;
1262	>	for (;;) {
1263	>	Thread.State s = thread.getState();
1264	>	if (s == Thread.State.BLOCKED ||
1265	>	s == Thread.State.WAITING ||
1266	>	s == Thread.State.TIMED_WAITING)
1267	>	return;
1268	>	else if (s == Thread.State.TERMINATED)
1269	>	fail("Unexpected thread termination");
1270	>	else if (startTime == 0L)
1271	>	startTime = System.nanoTime();
1272	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1273	>	threadAssertTrue(thread.isAlive());
1274	>	return;
1275	>	}
1276	>	Thread.yield();
1277	>	}
1278		}
1279
1280	<	static class NoOpCallable implements Callable {
1281	<	public Object call() { return Boolean.TRUE; }
1280	>	/**
1281	>	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
1282	>	* state: BLOCKED, WAITING, or TIMED_WAITING.
1283	>	*/
1284	>	void waitForThreadToEnterWaitState(Thread thread) {
1285	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
1286		}
1287
1288	<	static final String TEST_STRING = "a test string";
1288	>	/**
1289	>	* Returns the number of milliseconds since time given by
1290	>	* startNanoTime, which must have been previously returned from a
1291	>	* call to {@link System#nanoTime()}.
1292	>	*/
1293	>	static long millisElapsedSince(long startNanoTime) {
1294	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1295	>	}
1296
1297	<	static class StringTask implements Callable<String> {
1298	<	public String call() { return TEST_STRING; }
1297	>	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1298	>	//         long startTime = System.nanoTime();
1299	>	//         try {
1300	>	//             r.run();
1301	>	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1302	>	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1303	>	//             throw new AssertionFailedError("did not return promptly");
1304	>	//     }
1305	>
1306	>	//     void assertTerminatesPromptly(Runnable r) {
1307	>	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1308	>	//     }
1309	>
1310	>	/**
1311	>	* Checks that timed f.get() returns the expected value, and does not
1312	>	* wait for the timeout to elapse before returning.
1313	>	*/
1314	>	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1315	>	long startTime = System.nanoTime();
1316	>	try {
1317	>	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1318	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1319	>	if (millisElapsedSince(startTime) > timeoutMillis/2)
1320	>	throw new AssertionFailedError("timed get did not return promptly");
1321		}
1322
1323	<	static class NPETask implements Callable<String> {
1324	<	public String call() { throw new NullPointerException(); }
1323	>	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1324	>	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1325		}
1326
1327	<	static class CallableOne implements Callable<Integer> {
1328	<	public Integer call() { return one; }
1327	>	/**
1328	>	* Returns a new started daemon Thread running the given runnable.
1329	>	*/
1330	>	Thread newStartedThread(Runnable runnable) {
1331	>	Thread t = new Thread(runnable);
1332	>	t.setDaemon(true);
1333	>	t.start();
1334	>	return t;
1335		}
1336
1337	<	class ShortRunnable implements Runnable {
1338	<	public void run() {
1339	<	try {
1340	<	Thread.sleep(SHORT_DELAY_MS);
1341	<	}
1342	<	catch (Exception e) {
1343	<	threadUnexpectedException(e);
1337	>	/**
1338	>	* Waits for the specified time (in milliseconds) for the thread
1339	>	* to terminate (using {@link Thread#join(long)}), else interrupts
1340	>	* the thread (in the hope that it may terminate later) and fails.
1341	>	*/
1342	>	void awaitTermination(Thread t, long timeoutMillis) {
1343	>	try {
1344	>	t.join(timeoutMillis);
1345	>	} catch (InterruptedException fail) {
1346	>	threadUnexpectedException(fail);
1347	>	} finally {
1348	>	if (t.getState() != Thread.State.TERMINATED) {
1349	>	t.interrupt();
1350	>	threadFail("timed out waiting for thread to terminate");
1351		}
1352		}
1353		}
1354
1355	<	class ShortInterruptedRunnable implements Runnable {
1356	<	public void run() {
1355	>	/**
1356	>	* Waits for LONG_DELAY_MS milliseconds for the thread to
1357	>	* terminate (using {@link Thread#join(long)}), else interrupts
1358	>	* the thread (in the hope that it may terminate later) and fails.
1359	>	*/
1360	>	void awaitTermination(Thread t) {
1361	>	awaitTermination(t, LONG_DELAY_MS);
1362	>	}
1363	>
1364	>	// Some convenient Runnable classes
1365	>
1366	>	public abstract class CheckedRunnable implements Runnable {
1367	>	protected abstract void realRun() throws Throwable;
1368	>
1369	>	public final void run() {
1370		try {
1371	<	Thread.sleep(SHORT_DELAY_MS);
1372	<	threadShouldThrow();
1373	<	}
436	<	catch (InterruptedException success) {
1371	>	realRun();
1372	>	} catch (Throwable fail) {
1373	>	threadUnexpectedException(fail);
1374		}
1375		}
1376		}
1377
1378	<	class SmallRunnable implements Runnable {
1379	<	public void run() {
1378	>	public abstract class RunnableShouldThrow implements Runnable {
1379	>	protected abstract void realRun() throws Throwable;
1380	>
1381	>	final Class<?> exceptionClass;
1382	>
1383	>	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
1384	>	this.exceptionClass = exceptionClass;
1385	>	}
1386	>
1387	>	public final void run() {
1388		try {
1389	<	Thread.sleep(SMALL_DELAY_MS);
1390	<	}
1391	<	catch (Exception e) {
1392	<	threadUnexpectedException(e);
1389	>	realRun();
1390	>	threadShouldThrow(exceptionClass.getSimpleName());
1391	>	} catch (Throwable t) {
1392	>	if (! exceptionClass.isInstance(t))
1393	>	threadUnexpectedException(t);
1394		}
1395		}
1396		}
1397
1398	<	class SmallPossiblyInterruptedRunnable implements Runnable {
1399	<	public void run() {
1398	>	public abstract class ThreadShouldThrow extends Thread {
1399	>	protected abstract void realRun() throws Throwable;
1400	>
1401	>	final Class<?> exceptionClass;
1402	>
1403	>	<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) {
1404	>	this.exceptionClass = exceptionClass;
1405	>	}
1406	>
1407	>	public final void run() {
1408		try {
1409	<	Thread.sleep(SMALL_DELAY_MS);
1410	<	}
1411	<	catch (Exception e) {
1409	>	realRun();
1410	>	threadShouldThrow(exceptionClass.getSimpleName());
1411	>	} catch (Throwable t) {
1412	>	if (! exceptionClass.isInstance(t))
1413	>	threadUnexpectedException(t);
1414		}
1415		}
1416		}
1417
1418	<	class SmallCallable implements Callable {
1419	<	public Object call() {
1418	>	public abstract class CheckedInterruptedRunnable implements Runnable {
1419	>	protected abstract void realRun() throws Throwable;
1420	>
1421	>	public final void run() {
1422		try {
1423	<	Thread.sleep(SMALL_DELAY_MS);
1424	<	}
1425	<	catch (Exception e) {
1426	<	threadUnexpectedException(e);
1423	>	realRun();
1424	>	threadShouldThrow("InterruptedException");
1425	>	} catch (InterruptedException success) {
1426	>	threadAssertFalse(Thread.interrupted());
1427	>	} catch (Throwable fail) {
1428	>	threadUnexpectedException(fail);
1429		}
470	–	return Boolean.TRUE;
1430		}
1431		}
1432
1433	<	class SmallInterruptedRunnable implements Runnable {
1434	<	public void run() {
1433	>	public abstract class CheckedCallable<T> implements Callable<T> {
1434	>	protected abstract T realCall() throws Throwable;
1435	>
1436	>	public final T call() {
1437		try {
1438	<	Thread.sleep(SMALL_DELAY_MS);
1439	<	threadShouldThrow();
1440	<	}
1441	<	catch (InterruptedException success) {
1438	>	return realCall();
1439	>	} catch (Throwable fail) {
1440	>	threadUnexpectedException(fail);
1441	>	return null;
1442		}
1443		}
1444		}
1445
1446	+	public abstract class CheckedInterruptedCallable<T>
1447	+	implements Callable<T> {
1448	+	protected abstract T realCall() throws Throwable;
1449
1450	<	class MediumRunnable implements Runnable {
487	<	public void run() {
1450	>	public final T call() {
1451		try {
1452	<	Thread.sleep(MEDIUM_DELAY_MS);
1453	<	}
1454	<	catch (Exception e) {
1455	<	threadUnexpectedException(e);
1452	>	T result = realCall();
1453	>	threadShouldThrow("InterruptedException");
1454	>	return result;
1455	>	} catch (InterruptedException success) {
1456	>	threadAssertFalse(Thread.interrupted());
1457	>	} catch (Throwable fail) {
1458	>	threadUnexpectedException(fail);
1459		}
1460	+	return null;
1461		}
1462		}
1463
1464	<	class MediumInterruptedRunnable implements Runnable {
1465	<	public void run() {
1464	>	public static class NoOpRunnable implements Runnable {
1465	>	public void run() {}
1466	>	}
1467	>
1468	>	public static class NoOpCallable implements Callable {
1469	>	public Object call() { return Boolean.TRUE; }
1470	>	}
1471	>
1472	>	public static final String TEST_STRING = "a test string";
1473	>
1474	>	public static class StringTask implements Callable<String> {
1475	>	final String value;
1476	>	public StringTask() { this(TEST_STRING); }
1477	>	public StringTask(String value) { this.value = value; }
1478	>	public String call() { return value; }
1479	>	}
1480	>
1481	>	public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1482	>	return new CheckedCallable<String>() {
1483	>	protected String realCall() {
1484	>	try {
1485	>	latch.await();
1486	>	} catch (InterruptedException quittingTime) {}
1487	>	return TEST_STRING;
1488	>	}};
1489	>	}
1490	>
1491	>	public Runnable countDowner(final CountDownLatch latch) {
1492	>	return new CheckedRunnable() {
1493	>	public void realRun() throws InterruptedException {
1494	>	latch.countDown();
1495	>	}};
1496	>	}
1497	>
1498	>	class LatchAwaiter extends CheckedRunnable {
1499	>	static final int NEW = 0;
1500	>	static final int RUNNING = 1;
1501	>	static final int DONE = 2;
1502	>	final CountDownLatch latch;
1503	>	int state = NEW;
1504	>	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1505	>	public void realRun() throws InterruptedException {
1506	>	state = 1;
1507	>	await(latch);
1508	>	state = 2;
1509	>	}
1510	>	}
1511	>
1512	>	public LatchAwaiter awaiter(CountDownLatch latch) {
1513	>	return new LatchAwaiter(latch);
1514	>	}
1515	>
1516	>	public void await(CountDownLatch latch, long timeoutMillis) {
1517	>	try {
1518	>	if (!latch.await(timeoutMillis, MILLISECONDS))
1519	>	fail("timed out waiting for CountDownLatch for "
1520	>	+ (timeoutMillis/1000) + " sec");
1521	>	} catch (Throwable fail) {
1522	>	threadUnexpectedException(fail);
1523	>	}
1524	>	}
1525	>
1526	>	public void await(CountDownLatch latch) {
1527	>	await(latch, LONG_DELAY_MS);
1528	>	}
1529	>
1530	>	public void await(Semaphore semaphore) {
1531	>	try {
1532	>	if (!semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS))
1533	>	fail("timed out waiting for Semaphore for "
1534	>	+ (LONG_DELAY_MS/1000) + " sec");
1535	>	} catch (Throwable fail) {
1536	>	threadUnexpectedException(fail);
1537	>	}
1538	>	}
1539	>
1540	>	//     /**
1541	>	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1542	>	//      */
1543	>	//     public void await(AtomicBoolean flag) {
1544	>	//         await(flag, LONG_DELAY_MS);
1545	>	//     }
1546	>
1547	>	//     /**
1548	>	//      * Spin-waits up to the specified timeout until flag becomes true.
1549	>	//      */
1550	>	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1551	>	//         long startTime = System.nanoTime();
1552	>	//         while (!flag.get()) {
1553	>	//             if (millisElapsedSince(startTime) > timeoutMillis)
1554	>	//                 throw new AssertionFailedError("timed out");
1555	>	//             Thread.yield();
1556	>	//         }
1557	>	//     }
1558	>
1559	>	public static class NPETask implements Callable<String> {
1560	>	public String call() { throw new NullPointerException(); }
1561	>	}
1562	>
1563	>	public static class CallableOne implements Callable<Integer> {
1564	>	public Integer call() { return one; }
1565	>	}
1566	>
1567	>	public class ShortRunnable extends CheckedRunnable {
1568	>	protected void realRun() throws Throwable {
1569	>	delay(SHORT_DELAY_MS);
1570	>	}
1571	>	}
1572	>
1573	>	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1574	>	protected void realRun() throws InterruptedException {
1575	>	delay(SHORT_DELAY_MS);
1576	>	}
1577	>	}
1578	>
1579	>	public class SmallRunnable extends CheckedRunnable {
1580	>	protected void realRun() throws Throwable {
1581	>	delay(SMALL_DELAY_MS);
1582	>	}
1583	>	}
1584	>
1585	>	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1586	>	protected void realRun() {
1587		try {
1588	<	Thread.sleep(MEDIUM_DELAY_MS);
1589	<	threadShouldThrow();
502	<	}
503	<	catch (InterruptedException success) {
504	<	}
1588	>	delay(SMALL_DELAY_MS);
1589	>	} catch (InterruptedException ok) {}
1590		}
1591		}
1592
1593	<	class MediumPossiblyInterruptedRunnable implements Runnable {
1594	<	public void run() {
1593	>	public class SmallCallable extends CheckedCallable {
1594	>	protected Object realCall() throws InterruptedException {
1595	>	delay(SMALL_DELAY_MS);
1596	>	return Boolean.TRUE;
1597	>	}
1598	>	}
1599	>
1600	>	public class MediumRunnable extends CheckedRunnable {
1601	>	protected void realRun() throws Throwable {
1602	>	delay(MEDIUM_DELAY_MS);
1603	>	}
1604	>	}
1605	>
1606	>	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1607	>	protected void realRun() throws InterruptedException {
1608	>	delay(MEDIUM_DELAY_MS);
1609	>	}
1610	>	}
1611	>
1612	>	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1613	>	return new CheckedRunnable() {
1614	>	protected void realRun() {
1615	>	try {
1616	>	delay(timeoutMillis);
1617	>	} catch (InterruptedException ok) {}
1618	>	}};
1619	>	}
1620	>
1621	>	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1622	>	protected void realRun() {
1623		try {
1624	<	Thread.sleep(MEDIUM_DELAY_MS);
1625	<	}
513	<	catch (InterruptedException success) {
514	<	}
1624	>	delay(MEDIUM_DELAY_MS);
1625	>	} catch (InterruptedException ok) {}
1626		}
1627		}
1628
1629	<	class LongPossiblyInterruptedRunnable implements Runnable {
1630	<	public void run() {
1629	>	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1630	>	protected void realRun() {
1631		try {
1632	<	Thread.sleep(LONG_DELAY_MS);
1633	<	}
523	<	catch (InterruptedException success) {
524	<	}
1632	>	delay(LONG_DELAY_MS);
1633	>	} catch (InterruptedException ok) {}
1634		}
1635		}
1636
1637		/**
1638		* For use as ThreadFactory in constructors
1639		*/
1640	<	static class SimpleThreadFactory implements ThreadFactory {
1640	>	public static class SimpleThreadFactory implements ThreadFactory {
1641		public Thread newThread(Runnable r) {
1642		return new Thread(r);
1643		}
1644		}
1645
1646	<	static class TrackedShortRunnable implements Runnable {
1647	<	volatile boolean done = false;
1646	>	public interface TrackedRunnable extends Runnable {
1647	>	boolean isDone();
1648	>	}
1649	>
1650	>	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1651	>	return new TrackedRunnable() {
1652	>	private volatile boolean done = false;
1653	>	public boolean isDone() { return done; }
1654	>	public void run() {
1655	>	try {
1656	>	delay(timeoutMillis);
1657	>	done = true;
1658	>	} catch (InterruptedException ok) {}
1659	>	}
1660	>	};
1661	>	}
1662	>
1663	>	public static class TrackedShortRunnable implements Runnable {
1664	>	public volatile boolean done = false;
1665		public void run() {
1666		try {
1667	<	Thread.sleep(SMALL_DELAY_MS);
1667	>	delay(SHORT_DELAY_MS);
1668		done = true;
1669	<	} catch (Exception e) {
544	<	}
1669	>	} catch (InterruptedException ok) {}
1670		}
1671		}
1672
1673	<	static class TrackedMediumRunnable implements Runnable {
1674	<	volatile boolean done = false;
1673	>	public static class TrackedSmallRunnable implements Runnable {
1674	>	public volatile boolean done = false;
1675		public void run() {
1676		try {
1677	<	Thread.sleep(MEDIUM_DELAY_MS);
1677	>	delay(SMALL_DELAY_MS);
1678		done = true;
1679	<	} catch (Exception e) {
555	<	}
1679	>	} catch (InterruptedException ok) {}
1680		}
1681		}
1682
1683	<	static class TrackedLongRunnable implements Runnable {
1684	<	volatile boolean done = false;
1683	>	public static class TrackedMediumRunnable implements Runnable {
1684	>	public volatile boolean done = false;
1685		public void run() {
1686		try {
1687	<	Thread.sleep(LONG_DELAY_MS);
1687	>	delay(MEDIUM_DELAY_MS);
1688		done = true;
1689	<	} catch (Exception e) {
1690	<	}
1689	>	} catch (InterruptedException ok) {}
1690	>	}
1691	>	}
1692	>
1693	>	public static class TrackedLongRunnable implements Runnable {
1694	>	public volatile boolean done = false;
1695	>	public void run() {
1696	>	try {
1697	>	delay(LONG_DELAY_MS);
1698	>	done = true;
1699	>	} catch (InterruptedException ok) {}
1700		}
1701		}
1702
1703	<	static class TrackedNoOpRunnable implements Runnable {
1704	<	volatile boolean done = false;
1703	>	public static class TrackedNoOpRunnable implements Runnable {
1704	>	public volatile boolean done = false;
1705		public void run() {
1706		done = true;
1707		}
1708		}
1709
1710	<	static class TrackedCallable implements Callable {
1711	<	volatile boolean done = false;
1710	>	public static class TrackedCallable implements Callable {
1711	>	public volatile boolean done = false;
1712		public Object call() {
1713		try {
1714	<	Thread.sleep(SMALL_DELAY_MS);
1714	>	delay(SMALL_DELAY_MS);
1715		done = true;
1716	<	} catch (Exception e) {
584	<	}
1716	>	} catch (InterruptedException ok) {}
1717		return Boolean.TRUE;
1718		}
1719		}
1720
1721	+	/**
1722	+	* Analog of CheckedRunnable for RecursiveAction
1723	+	*/
1724	+	public abstract class CheckedRecursiveAction extends RecursiveAction {
1725	+	protected abstract void realCompute() throws Throwable;
1726	+
1727	+	@Override protected final void compute() {
1728	+	try {
1729	+	realCompute();
1730	+	} catch (Throwable fail) {
1731	+	threadUnexpectedException(fail);
1732	+	}
1733	+	}
1734	+	}
1735	+
1736	+	/**
1737	+	* Analog of CheckedCallable for RecursiveTask
1738	+	*/
1739	+	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1740	+	protected abstract T realCompute() throws Throwable;
1741	+
1742	+	@Override protected final T compute() {
1743	+	try {
1744	+	return realCompute();
1745	+	} catch (Throwable fail) {
1746	+	threadUnexpectedException(fail);
1747	+	return null;
1748	+	}
1749	+	}
1750	+	}
1751
1752		/**
1753		* For use as RejectedExecutionHandler in constructors
1754		*/
1755	<	static class NoOpREHandler implements RejectedExecutionHandler {
1756	<	public void rejectedExecution(Runnable r, ThreadPoolExecutor executor){}
1755	>	public static class NoOpREHandler implements RejectedExecutionHandler {
1756	>	public void rejectedExecution(Runnable r,
1757	>	ThreadPoolExecutor executor) {}
1758	>	}
1759	>
1760	>	/**
1761	>	* A CyclicBarrier that uses timed await and fails with
1762	>	* AssertionFailedErrors instead of throwing checked exceptions.
1763	>	*/
1764	>	public static class CheckedBarrier extends CyclicBarrier {
1765	>	public CheckedBarrier(int parties) { super(parties); }
1766	>
1767	>	public int await() {
1768	>	try {
1769	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1770	>	} catch (TimeoutException timedOut) {
1771	>	throw new AssertionFailedError("timed out");
1772	>	} catch (Exception fail) {
1773	>	AssertionFailedError afe =
1774	>	new AssertionFailedError("Unexpected exception: " + fail);
1775	>	afe.initCause(fail);
1776	>	throw afe;
1777	>	}
1778	>	}
1779	>	}
1780	>
1781	>	void checkEmpty(BlockingQueue q) {
1782	>	try {
1783	>	assertTrue(q.isEmpty());
1784	>	assertEquals(0, q.size());
1785	>	assertNull(q.peek());
1786	>	assertNull(q.poll());
1787	>	assertNull(q.poll(0, MILLISECONDS));
1788	>	assertEquals(q.toString(), "[]");
1789	>	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1790	>	assertFalse(q.iterator().hasNext());
1791	>	try {
1792	>	q.element();
1793	>	shouldThrow();
1794	>	} catch (NoSuchElementException success) {}
1795	>	try {
1796	>	q.iterator().next();
1797	>	shouldThrow();
1798	>	} catch (NoSuchElementException success) {}
1799	>	try {
1800	>	q.remove();
1801	>	shouldThrow();
1802	>	} catch (NoSuchElementException success) {}
1803	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1804		}
1805
1806	+	void assertSerialEquals(Object x, Object y) {
1807	+	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1808	+	}
1809	+
1810	+	void assertNotSerialEquals(Object x, Object y) {
1811	+	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1812	+	}
1813	+
1814	+	byte[] serialBytes(Object o) {
1815	+	try {
1816	+	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1817	+	ObjectOutputStream oos = new ObjectOutputStream(bos);
1818	+	oos.writeObject(o);
1819	+	oos.flush();
1820	+	oos.close();
1821	+	return bos.toByteArray();
1822	+	} catch (Throwable fail) {
1823	+	threadUnexpectedException(fail);
1824	+	return new byte[0];
1825	+	}
1826	+	}
1827	+
1828	+	@SuppressWarnings("unchecked")
1829	+	<T> T serialClone(T o) {
1830	+	try {
1831	+	ObjectInputStream ois = new ObjectInputStream
1832	+	(new ByteArrayInputStream(serialBytes(o)));
1833	+	T clone = (T) ois.readObject();
1834	+	assertSame(o.getClass(), clone.getClass());
1835	+	return clone;
1836	+	} catch (Throwable fail) {
1837	+	threadUnexpectedException(fail);
1838	+	return null;
1839	+	}
1840	+	}
1841	+
1842	+	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1843	+	Runnable... throwingActions) {
1844	+	for (Runnable throwingAction : throwingActions) {
1845	+	boolean threw = false;
1846	+	try { throwingAction.run(); }
1847	+	catch (Throwable t) {
1848	+	threw = true;
1849	+	if (!expectedExceptionClass.isInstance(t)) {
1850	+	AssertionFailedError afe =
1851	+	new AssertionFailedError
1852	+	("Expected " + expectedExceptionClass.getName() +
1853	+	", got " + t.getClass().getName());
1854	+	afe.initCause(t);
1855	+	threadUnexpectedException(afe);
1856	+	}
1857	+	}
1858	+	if (!threw)
1859	+	shouldThrow(expectedExceptionClass.getName());
1860	+	}
1861	+	}
1862	+
1863	+	public void assertIteratorExhausted(Iterator<?> it) {
1864	+	try {
1865	+	it.next();
1866	+	shouldThrow();
1867	+	} catch (NoSuchElementException success) {}
1868	+	assertFalse(it.hasNext());
1869	+	}
1870
1871	+	public <T> Callable<T> callableThrowing(final Exception ex) {
1872	+	return new Callable<T>() { public T call() throws Exception { throw ex; }};
1873	+	}
1874	+
1875	+	public Runnable runnableThrowing(final RuntimeException ex) {
1876	+	return new Runnable() { public void run() { throw ex; }};
1877	+	}
1878	+
1879	+	/** A reusable thread pool to be shared by tests. */
1880	+	static final ExecutorService cachedThreadPool =
1881	+	new ThreadPoolExecutor(0, Integer.MAX_VALUE,
1882	+	1000L, MILLISECONDS,
1883	+	new SynchronousQueue<Runnable>());
1884	+
1885	+	static <T> void shuffle(T[] array) {
1886	+	Collections.shuffle(Arrays.asList(array), ThreadLocalRandom.current());
1887	+	}
1888		}

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