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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.1 by dl, Sun Sep 14 20:42:40 2003 UTC vs.
Revision 1.189 by jsr166, Fri Mar 4 21:00:45 2016 UTC

#	Line 1 | Line 1
1		/*
2	<	* Written by members of JCP JSR-166 Expert Group and released to the
3	<	* public domain. Use, modify, and redistribute this code in any way
4	<	* without acknowledgement. Other contributors include Andrew Wright,
5	<	* Jeffrey Hayes, Pat Fischer, Mike Judd.
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/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.*;
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	>	*/
16
17	+	import static java.util.concurrent.TimeUnit.MILLISECONDS;
18	+	import static java.util.concurrent.TimeUnit.MINUTES;
19	+	import static java.util.concurrent.TimeUnit.NANOSECONDS;
20	+
21	+	import java.io.ByteArrayInputStream;
22	+	import java.io.ByteArrayOutputStream;
23	+	import java.io.ObjectInputStream;
24	+	import java.io.ObjectOutputStream;
25	+	import java.lang.management.ManagementFactory;
26	+	import java.lang.management.ThreadInfo;
27	+	import java.lang.management.ThreadMXBean;
28	+	import java.lang.reflect.Constructor;
29	+	import java.lang.reflect.Method;
30	+	import java.lang.reflect.Modifier;
31	+	import java.nio.file.Files;
32	+	import java.nio.file.Paths;
33	+	import java.security.CodeSource;
34	+	import java.security.Permission;
35	+	import java.security.PermissionCollection;
36	+	import java.security.Permissions;
37	+	import java.security.Policy;
38	+	import java.security.ProtectionDomain;
39	+	import java.security.SecurityPermission;
40	+	import java.util.ArrayList;
41	+	import java.util.Arrays;
42	+	import java.util.Date;
43	+	import java.util.Enumeration;
44	+	import java.util.Iterator;
45	+	import java.util.List;
46	+	import java.util.NoSuchElementException;
47	+	import java.util.PropertyPermission;
48	+	import java.util.concurrent.BlockingQueue;
49	+	import java.util.concurrent.Callable;
50	+	import java.util.concurrent.CountDownLatch;
51	+	import java.util.concurrent.CyclicBarrier;
52	+	import java.util.concurrent.ExecutionException;
53	+	import java.util.concurrent.Executors;
54	+	import java.util.concurrent.ExecutorService;
55	+	import java.util.concurrent.ForkJoinPool;
56	+	import java.util.concurrent.Future;
57	+	import java.util.concurrent.RecursiveAction;
58	+	import java.util.concurrent.RecursiveTask;
59	+	import java.util.concurrent.RejectedExecutionHandler;
60	+	import java.util.concurrent.Semaphore;
61	+	import java.util.concurrent.ThreadFactory;
62	+	import java.util.concurrent.ThreadPoolExecutor;
63	+	import java.util.concurrent.TimeoutException;
64	+	import java.util.concurrent.atomic.AtomicBoolean;
65	+	import java.util.concurrent.atomic.AtomicReference;
66	+	import java.util.regex.Matcher;
67	+	import java.util.regex.Pattern;
68	+
69	+	import junit.framework.AssertionFailedError;
70	+	import junit.framework.Test;
71	+	import junit.framework.TestCase;
72	+	import junit.framework.TestResult;
73	+	import junit.framework.TestSuite;
74
75		/**
76	<	* Base class for JSR166 Junit TCK tests.  Defines some constants and
77	<	* utility methods, as well as a simple framework for helping to make
78	<	* sure that assertions failing in generated threads cause the
79	<	* associated test that generated them to itself fail (which JUnit doe
80	<	* not otherwise arrange).  The rules for creating such tests are:
76	>	* Base class for JSR166 Junit TCK tests.  Defines some constants,
77	>	* utility methods and classes, as well as a simple framework for
78	>	* helping to make sure that assertions failing in generated threads
79	>	* cause the associated test that generated them to itself fail (which
80	>	* JUnit does not otherwise arrange).  The rules for creating such
81	>	* tests are:
82		*
83		* <ol>
84		*
85	<	* <li> All assertions in code running in generated threads must use
86	<	* the forms {@link threadFail} , {@link threadAssertTrue} {@link
87	<	* threadAssertEquals}, or {@link threadAssertNull}, (not
88	<	* <tt>fail</tt>, <tt>assertTrue</tt>, etc.) It is OK (but not
85	>	* <li>All assertions in code running in generated threads must use
86	>	* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
87	>	* #threadAssertEquals}, or {@link #threadAssertNull}, (not
88	>	* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
89		* particularly recommended) for other code to use these forms too.
90		* Only the most typically used JUnit assertion methods are defined
91	<	* this way, but enough to live with.</li>
91	>	* this way, but enough to live with.
92		*
93	<	* <li> If you override {@link setUp} or {@link tearDown}, make sure
94	<	* to invoke <tt>super.setUp</tt> and <tt>super.tearDown</tt> within
93	>	* <li>If you override {@link #setUp} or {@link #tearDown}, make sure
94	>	* to invoke {@code super.setUp} and {@code super.tearDown} within
95		* them. These methods are used to clear and check for thread
96	<	* assertion failures.</li>
96	>	* assertion failures.
97		*
98	<	* <li>All delays and timeouts must use one of the constants {@link
99	<	* SHORT_DELAY_MS}, {@link SMALL_DELAY_MS}, {@link MEDIUM_DELAY_MS},
100	<	* {@link LONG_DELAY_MS}. The idea here is that a SHORT is always
101	<	* discriminatable from zero time, and always allows enough time for
102	<	* the small amounts of computation (creating a thread, calling a few
98	>	* <li>All delays and timeouts must use one of the constants {@code
99	>	* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
100	>	* {@code LONG_DELAY_MS}. The idea here is that a SHORT is always
101	>	* discriminable from zero time, and always allows enough time for the
102	>	* small amounts of computation (creating a thread, calling a few
103		* methods, etc) needed to reach a timeout point. Similarly, a SMALL
104		* is always discriminable as larger than SHORT and smaller than
105		* MEDIUM.  And so on. These constants are set to conservative values,
106	<	* (100, 500, 1000, 5000 MS) but even so, if there is ever any doubt,
107	<	* they can all be increased in one spot to rerun tests on slower
108	<	* platforms</li>
109	<	*
110	<	* <li> All threads generated must be joined inside each test case
111	<	* method (or <tt>fail</tt> to do so) before returning from the
112	<	* method. The {@link joinPool} method can be used to do this when
51	<	* using Executors.</li>
106	>	* but even so, if there is ever any doubt, they can all be increased
107	>	* in one spot to rerun tests on slower platforms.
108	>	*
109	>	* <li>All threads generated must be joined inside each test case
110	>	* method (or {@code fail} to do so) before returning from the
111	>	* method. The {@code joinPool} method can be used to do this when
112	>	* using Executors.
113		*
114		* </ol>
115	+	*
116	+	* <p><b>Other notes</b>
117	+	* <ul>
118	+	*
119	+	* <li>Usually, there is one testcase method per JSR166 method
120	+	* covering "normal" operation, and then as many exception-testing
121	+	* methods as there are exceptions the method can throw. Sometimes
122	+	* there are multiple tests per JSR166 method when the different
123	+	* "normal" behaviors differ significantly. And sometimes testcases
124	+	* cover multiple methods when they cannot be tested in isolation.
125	+	*
126	+	* <li>The documentation style for testcases is to provide as javadoc
127	+	* a simple sentence or two describing the property that the testcase
128	+	* method purports to test. The javadocs do not say anything about how
129	+	* the property is tested. To find out, read the code.
130	+	*
131	+	* <li>These tests are "conformance tests", and do not attempt to
132	+	* test throughput, latency, scalability or other performance factors
133	+	* (see the separate "jtreg" tests for a set intended to check these
134	+	* for the most central aspects of functionality.) So, most tests use
135	+	* the smallest sensible numbers of threads, collection sizes, etc
136	+	* needed to check basic conformance.
137	+	*
138	+	* <li>The test classes currently do not declare inclusion in
139	+	* any particular package to simplify things for people integrating
140	+	* them in TCK test suites.
141	+	*
142	+	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
143	+	* runs all JSR166 unit tests.
144	+	*
145	+	* </ul>
146		*/
147		public class JSR166TestCase extends TestCase {
148	+	private static final boolean useSecurityManager =
149	+	Boolean.getBoolean("jsr166.useSecurityManager");
150	+
151	+	protected static final boolean expensiveTests =
152	+	Boolean.getBoolean("jsr166.expensiveTests");
153	+
154	+	/**
155	+	* If true, also run tests that are not part of the official tck
156	+	* because they test unspecified implementation details.
157	+	*/
158	+	protected static final boolean testImplementationDetails =
159	+	Boolean.getBoolean("jsr166.testImplementationDetails");
160	+
161	+	/**
162	+	* If true, report on stdout all "slow" tests, that is, ones that
163	+	* take more than profileThreshold milliseconds to execute.
164	+	*/
165	+	private static final boolean profileTests =
166	+	Boolean.getBoolean("jsr166.profileTests");
167	+
168	+	/**
169	+	* The number of milliseconds that tests are permitted for
170	+	* execution without being reported, when profileTests is set.
171	+	*/
172	+	private static final long profileThreshold =
173	+	Long.getLong("jsr166.profileThreshold", 100);
174	+
175	+	/**
176	+	* The number of repetitions per test (for tickling rare bugs).
177	+	*/
178	+	private static final int runsPerTest =
179	+	Integer.getInteger("jsr166.runsPerTest", 1);
180	+
181	+	/**
182	+	* The number of repetitions of the test suite (for finding leaks?).
183	+	*/
184	+	private static final int suiteRuns =
185	+	Integer.getInteger("jsr166.suiteRuns", 1);
186	+
187	+	/**
188	+	* Returns the value of the system property, or NaN if not defined.
189	+	*/
190	+	private static float systemPropertyValue(String name) {
191	+	String floatString = System.getProperty(name);
192	+	if (floatString == null)
193	+	return Float.NaN;
194	+	try {
195	+	return Float.parseFloat(floatString);
196	+	} catch (NumberFormatException ex) {
197	+	throw new IllegalArgumentException(
198	+	String.format("Bad float value in system property %s=%s",
199	+	name, floatString));
200	+	}
201	+	}
202	+
203	+	/**
204	+	* The scaling factor to apply to standard delays used in tests.
205	+	* May be initialized from any of:
206	+	* - the "jsr166.delay.factor" system property
207	+	* - the "test.timeout.factor" system property (as used by jtreg)
208	+	*   See: http://openjdk.java.net/jtreg/tag-spec.html
209	+	* - hard-coded fuzz factor when using a known slowpoke VM
210	+	*/
211	+	private static final float delayFactor = delayFactor();
212	+
213	+	private static float delayFactor() {
214	+	float x;
215	+	if (!Float.isNaN(x = systemPropertyValue("jsr166.delay.factor")))
216	+	return x;
217	+	if (!Float.isNaN(x = systemPropertyValue("test.timeout.factor")))
218	+	return x;
219	+	String prop = System.getProperty("java.vm.version");
220	+	if (prop != null && prop.matches(".*debug.*"))
221	+	return 4.0f; // How much slower is fastdebug than product?!
222	+	return 1.0f;
223	+	}
224	+
225	+	public JSR166TestCase() { super(); }
226	+	public JSR166TestCase(String name) { super(name); }
227	+
228	+	/**
229	+	* A filter for tests to run, matching strings of the form
230	+	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
231	+	* Usefully combined with jsr166.runsPerTest.
232	+	*/
233	+	private static final Pattern methodFilter = methodFilter();
234	+
235	+	private static Pattern methodFilter() {
236	+	String regex = System.getProperty("jsr166.methodFilter");
237	+	return (regex == null) ? null : Pattern.compile(regex);
238	+	}
239	+
240	+	// Instrumentation to debug very rare, but very annoying hung test runs.
241	+	static volatile TestCase currentTestCase;
242	+	// static volatile int currentRun = 0;
243	+	static {
244	+	Runnable checkForWedgedTest = new Runnable() { public void run() {
245	+	// Avoid spurious reports with enormous runsPerTest.
246	+	// A single test case run should never take more than 1 second.
247	+	// But let's cap it at the high end too ...
248	+	final int timeoutMinutes =
249	+	Math.min(15, Math.max(runsPerTest / 60, 1));
250	+	for (TestCase lastTestCase = currentTestCase;;) {
251	+	try { MINUTES.sleep(timeoutMinutes); }
252	+	catch (InterruptedException unexpected) { break; }
253	+	if (lastTestCase == currentTestCase) {
254	+	System.err.printf(
255	+	"Looks like we're stuck running test: %s%n",
256	+	lastTestCase);
257	+	//                     System.err.printf(
258	+	//                         "Looks like we're stuck running test: %s (%d/%d)%n",
259	+	//                         lastTestCase, currentRun, runsPerTest);
260	+	//                     System.err.println("availableProcessors=" +
261	+	//                         Runtime.getRuntime().availableProcessors());
262	+	//                     System.err.printf("cpu model = %s%n", cpuModel());
263	+	dumpTestThreads();
264	+	// one stack dump is probably enough; more would be spam
265	+	break;
266	+	}
267	+	lastTestCase = currentTestCase;
268	+	}}};
269	+	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
270	+	thread.setDaemon(true);
271	+	thread.start();
272	+	}
273	+
274	+	//     public static String cpuModel() {
275	+	//         try {
276	+	//             Matcher matcher = Pattern.compile("model name\\s*: (.*)")
277	+	//                 .matcher(new String(
278	+	//                      Files.readAllBytes(Paths.get("/proc/cpuinfo")), "UTF-8"));
279	+	//             matcher.find();
280	+	//             return matcher.group(1);
281	+	//         } catch (Exception ex) { return null; }
282	+	//     }
283	+
284	+	public void runBare() throws Throwable {
285	+	currentTestCase = this;
286	+	if (methodFilter == null
287	+	|| methodFilter.matcher(toString()).find())
288	+	super.runBare();
289	+	}
290	+
291	+	protected void runTest() throws Throwable {
292	+	for (int i = 0; i < runsPerTest; i++) {
293	+	// currentRun = i;
294	+	if (profileTests)
295	+	runTestProfiled();
296	+	else
297	+	super.runTest();
298	+	}
299	+	}
300	+
301	+	protected void runTestProfiled() throws Throwable {
302	+	for (int i = 0; i < 2; i++) {
303	+	long startTime = System.nanoTime();
304	+	super.runTest();
305	+	long elapsedMillis = millisElapsedSince(startTime);
306	+	if (elapsedMillis < profileThreshold)
307	+	break;
308	+	// Never report first run of any test; treat it as a
309	+	// warmup run, notably to trigger all needed classloading,
310	+	if (i > 0)
311	+	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
312	+	}
313	+	}
314	+
315	+	/**
316	+	* Runs all JSR166 unit tests using junit.textui.TestRunner.
317	+	*/
318	+	public static void main(String[] args) {
319	+	main(suite(), args);
320	+	}
321	+
322	+	static class PithyResultPrinter extends junit.textui.ResultPrinter {
323	+	PithyResultPrinter(java.io.PrintStream writer) { super(writer); }
324	+	long runTime;
325	+	public void startTest(Test test) {}
326	+	protected void printHeader(long runTime) {
327	+	this.runTime = runTime; // defer printing for later
328	+	}
329	+	protected void printFooter(TestResult result) {
330	+	if (result.wasSuccessful()) {
331	+	getWriter().println("OK (" + result.runCount() + " tests)"
332	+	+ "  Time: " + elapsedTimeAsString(runTime));
333	+	} else {
334	+	getWriter().println("Time: " + elapsedTimeAsString(runTime));
335	+	super.printFooter(result);
336	+	}
337	+	}
338	+	}
339	+
340	+	/**
341	+	* Returns a TestRunner that doesn't bother with unnecessary
342	+	* fluff, like printing a "." for each test case.
343	+	*/
344	+	static junit.textui.TestRunner newPithyTestRunner() {
345	+	junit.textui.TestRunner runner = new junit.textui.TestRunner();
346	+	runner.setPrinter(new PithyResultPrinter(System.out));
347	+	return runner;
348	+	}
349
350		/**
351	<	* Flag set true if any threadAssert methods fail
351	>	* Runs all unit tests in the given test suite.
352	>	* Actual behavior influenced by jsr166.* system properties.
353		*/
354	<	protected volatile boolean threadFailed;
354	>	static void main(Test suite, String[] args) {
355	>	if (useSecurityManager) {
356	>	System.err.println("Setting a permissive security manager");
357	>	Policy.setPolicy(permissivePolicy());
358	>	System.setSecurityManager(new SecurityManager());
359	>	}
360	>	for (int i = 0; i < suiteRuns; i++) {
361	>	TestResult result = newPithyTestRunner().doRun(suite);
362	>	if (!result.wasSuccessful())
363	>	System.exit(1);
364	>	System.gc();
365	>	System.runFinalization();
366	>	}
367	>	}
368	>
369	>	public static TestSuite newTestSuite(Object... suiteOrClasses) {
370	>	TestSuite suite = new TestSuite();
371	>	for (Object suiteOrClass : suiteOrClasses) {
372	>	if (suiteOrClass instanceof TestSuite)
373	>	suite.addTest((TestSuite) suiteOrClass);
374	>	else if (suiteOrClass instanceof Class)
375	>	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
376	>	else
377	>	throw new ClassCastException("not a test suite or class");
378	>	}
379	>	return suite;
380	>	}
381	>
382	>	public static void addNamedTestClasses(TestSuite suite,
383	>	String... testClassNames) {
384	>	for (String testClassName : testClassNames) {
385	>	try {
386	>	Class<?> testClass = Class.forName(testClassName);
387	>	Method m = testClass.getDeclaredMethod("suite",
388	>	new Class<?>[0]);
389	>	suite.addTest(newTestSuite((Test)m.invoke(null)));
390	>	} catch (Exception e) {
391	>	throw new Error("Missing test class", e);
392	>	}
393	>	}
394	>	}
395	>
396	>	public static final double JAVA_CLASS_VERSION;
397	>	public static final String JAVA_SPECIFICATION_VERSION;
398	>	static {
399	>	try {
400	>	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
401	>	new java.security.PrivilegedAction<Double>() {
402	>	public Double run() {
403	>	return Double.valueOf(System.getProperty("java.class.version"));}});
404	>	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
405	>	new java.security.PrivilegedAction<String>() {
406	>	public String run() {
407	>	return System.getProperty("java.specification.version");}});
408	>	} catch (Throwable t) {
409	>	throw new Error(t);
410	>	}
411	>	}
412	>
413	>	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
414	>	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
415	>	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
416	>	public static boolean atLeastJava9() {
417	>	return JAVA_CLASS_VERSION >= 53.0
418	>	// As of 2015-09, java9 still uses 52.0 class file version
419	>	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?(9|[0-9][0-9])$");
420	>	}
421	>	public static boolean atLeastJava10() {
422	>	return JAVA_CLASS_VERSION >= 54.0
423	>	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?[0-9][0-9]$");
424	>	}
425
426		/**
427	<	* Initialize test to indicat that no thread assertions have failed
427	>	* Collects all JSR166 unit tests as one suite.
428		*/
429	<	public void setUp() {
430	<	threadFailed = false;
429	>	public static Test suite() {
430	>	// Java7+ test classes
431	>	TestSuite suite = newTestSuite(
432	>	ForkJoinPoolTest.suite(),
433	>	ForkJoinTaskTest.suite(),
434	>	RecursiveActionTest.suite(),
435	>	RecursiveTaskTest.suite(),
436	>	LinkedTransferQueueTest.suite(),
437	>	PhaserTest.suite(),
438	>	ThreadLocalRandomTest.suite(),
439	>	AbstractExecutorServiceTest.suite(),
440	>	AbstractQueueTest.suite(),
441	>	AbstractQueuedSynchronizerTest.suite(),
442	>	AbstractQueuedLongSynchronizerTest.suite(),
443	>	ArrayBlockingQueueTest.suite(),
444	>	ArrayDequeTest.suite(),
445	>	AtomicBooleanTest.suite(),
446	>	AtomicIntegerArrayTest.suite(),
447	>	AtomicIntegerFieldUpdaterTest.suite(),
448	>	AtomicIntegerTest.suite(),
449	>	AtomicLongArrayTest.suite(),
450	>	AtomicLongFieldUpdaterTest.suite(),
451	>	AtomicLongTest.suite(),
452	>	AtomicMarkableReferenceTest.suite(),
453	>	AtomicReferenceArrayTest.suite(),
454	>	AtomicReferenceFieldUpdaterTest.suite(),
455	>	AtomicReferenceTest.suite(),
456	>	AtomicStampedReferenceTest.suite(),
457	>	ConcurrentHashMapTest.suite(),
458	>	ConcurrentLinkedDequeTest.suite(),
459	>	ConcurrentLinkedQueueTest.suite(),
460	>	ConcurrentSkipListMapTest.suite(),
461	>	ConcurrentSkipListSubMapTest.suite(),
462	>	ConcurrentSkipListSetTest.suite(),
463	>	ConcurrentSkipListSubSetTest.suite(),
464	>	CopyOnWriteArrayListTest.suite(),
465	>	CopyOnWriteArraySetTest.suite(),
466	>	CountDownLatchTest.suite(),
467	>	CyclicBarrierTest.suite(),
468	>	DelayQueueTest.suite(),
469	>	EntryTest.suite(),
470	>	ExchangerTest.suite(),
471	>	ExecutorsTest.suite(),
472	>	ExecutorCompletionServiceTest.suite(),
473	>	FutureTaskTest.suite(),
474	>	LinkedBlockingDequeTest.suite(),
475	>	LinkedBlockingQueueTest.suite(),
476	>	LinkedListTest.suite(),
477	>	LockSupportTest.suite(),
478	>	PriorityBlockingQueueTest.suite(),
479	>	PriorityQueueTest.suite(),
480	>	ReentrantLockTest.suite(),
481	>	ReentrantReadWriteLockTest.suite(),
482	>	ScheduledExecutorTest.suite(),
483	>	ScheduledExecutorSubclassTest.suite(),
484	>	SemaphoreTest.suite(),
485	>	SynchronousQueueTest.suite(),
486	>	SystemTest.suite(),
487	>	ThreadLocalTest.suite(),
488	>	ThreadPoolExecutorTest.suite(),
489	>	ThreadPoolExecutorSubclassTest.suite(),
490	>	ThreadTest.suite(),
491	>	TimeUnitTest.suite(),
492	>	TreeMapTest.suite(),
493	>	TreeSetTest.suite(),
494	>	TreeSubMapTest.suite(),
495	>	TreeSubSetTest.suite());
496	>
497	>	// Java8+ test classes
498	>	if (atLeastJava8()) {
499	>	String[] java8TestClassNames = {
500	>	"Atomic8Test",
501	>	"CompletableFutureTest",
502	>	"ConcurrentHashMap8Test",
503	>	"CountedCompleterTest",
504	>	"DoubleAccumulatorTest",
505	>	"DoubleAdderTest",
506	>	"ForkJoinPool8Test",
507	>	"ForkJoinTask8Test",
508	>	"LongAccumulatorTest",
509	>	"LongAdderTest",
510	>	"SplittableRandomTest",
511	>	"StampedLockTest",
512	>	"SubmissionPublisherTest",
513	>	"ThreadLocalRandom8Test",
514	>	};
515	>	addNamedTestClasses(suite, java8TestClassNames);
516	>	}
517	>
518	>	// Java9+ test classes
519	>	if (atLeastJava9()) {
520	>	String[] java9TestClassNames = {
521	>	// Currently empty, but expecting varhandle tests
522	>	};
523	>	addNamedTestClasses(suite, java9TestClassNames);
524	>	}
525	>
526	>	return suite;
527	>	}
528	>
529	>	/** Returns list of junit-style test method names in given class. */
530	>	public static ArrayList<String> testMethodNames(Class<?> testClass) {
531	>	Method[] methods = testClass.getDeclaredMethods();
532	>	ArrayList<String> names = new ArrayList<String>(methods.length);
533	>	for (Method method : methods) {
534	>	if (method.getName().startsWith("test")
535	>	&& Modifier.isPublic(method.getModifiers())
536	>	// method.getParameterCount() requires jdk8+
537	>	&& method.getParameterTypes().length == 0) {
538	>	names.add(method.getName());
539	>	}
540	>	}
541	>	return names;
542		}
543
544		/**
545	<	* Trigger test case failure if any thread assertions have failed
545	>	* Returns junit-style testSuite for the given test class, but
546	>	* parameterized by passing extra data to each test.
547	>	*/
548	>	public static <ExtraData> Test parameterizedTestSuite
549	>	(Class<? extends JSR166TestCase> testClass,
550	>	Class<ExtraData> dataClass,
551	>	ExtraData data) {
552	>	try {
553	>	TestSuite suite = new TestSuite();
554	>	Constructor c =
555	>	testClass.getDeclaredConstructor(dataClass, String.class);
556	>	for (String methodName : testMethodNames(testClass))
557	>	suite.addTest((Test) c.newInstance(data, methodName));
558	>	return suite;
559	>	} catch (Exception e) {
560	>	throw new Error(e);
561	>	}
562	>	}
563	>
564	>	/**
565	>	* Returns junit-style testSuite for the jdk8 extension of the
566	>	* given test class, but parameterized by passing extra data to
567	>	* each test.  Uses reflection to allow compilation in jdk7.
568	>	*/
569	>	public static <ExtraData> Test jdk8ParameterizedTestSuite
570	>	(Class<? extends JSR166TestCase> testClass,
571	>	Class<ExtraData> dataClass,
572	>	ExtraData data) {
573	>	if (atLeastJava8()) {
574	>	String name = testClass.getName();
575	>	String name8 = name.replaceAll("Test$", "8Test");
576	>	if (name.equals(name8)) throw new Error(name);
577	>	try {
578	>	return (Test)
579	>	Class.forName(name8)
580	>	.getMethod("testSuite", new Class[] { dataClass })
581	>	.invoke(null, data);
582	>	} catch (Exception e) {
583	>	throw new Error(e);
584	>	}
585	>	} else {
586	>	return new TestSuite();
587	>	}
588	>	}
589	>
590	>	// Delays for timing-dependent tests, in milliseconds.
591	>
592	>	public static long SHORT_DELAY_MS;
593	>	public static long SMALL_DELAY_MS;
594	>	public static long MEDIUM_DELAY_MS;
595	>	public static long LONG_DELAY_MS;
596	>
597	>	/**
598	>	* Returns the shortest timed delay. This can be scaled up for
599	>	* slow machines using the jsr166.delay.factor system property,
600	>	* or via jtreg's -timeoutFactor: flag.
601	>	* http://openjdk.java.net/jtreg/command-help.html
602	>	*/
603	>	protected long getShortDelay() {
604	>	return (long) (50 * delayFactor);
605	>	}
606	>
607	>	/**
608	>	* Sets delays as multiples of SHORT_DELAY.
609	>	*/
610	>	protected void setDelays() {
611	>	SHORT_DELAY_MS = getShortDelay();
612	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
613	>	MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
614	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
615	>	}
616	>
617	>	/**
618	>	* Returns a timeout in milliseconds to be used in tests that
619	>	* verify that operations block or time out.
620	>	*/
621	>	long timeoutMillis() {
622	>	return SHORT_DELAY_MS / 4;
623	>	}
624	>
625	>	/**
626	>	* Returns a new Date instance representing a time at least
627	>	* delayMillis milliseconds in the future.
628	>	*/
629	>	Date delayedDate(long delayMillis) {
630	>	// Add 1 because currentTimeMillis is known to round into the past.
631	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
632	>	}
633	>
634	>	/**
635	>	* The first exception encountered if any threadAssertXXX method fails.
636	>	*/
637	>	private final AtomicReference<Throwable> threadFailure
638	>	= new AtomicReference<Throwable>(null);
639	>
640	>	/**
641	>	* Records an exception so that it can be rethrown later in the test
642	>	* harness thread, triggering a test case failure.  Only the first
643	>	* failure is recorded; subsequent calls to this method from within
644	>	* the same test have no effect.
645		*/
646	<	public void tearDown() {
647	<	assertFalse(threadFailed);
646	>	public void threadRecordFailure(Throwable t) {
647	>	System.err.println(t);
648	>	dumpTestThreads();
649	>	threadFailure.compareAndSet(null, t);
650		}
651
652	+	public void setUp() {
653	+	setDelays();
654	+	}
655	+
656	+	void tearDownFail(String format, Object... args) {
657	+	String msg = toString() + ": " + String.format(format, args);
658	+	System.err.println(msg);
659	+	dumpTestThreads();
660	+	throw new AssertionFailedError(msg);
661	+	}
662	+
663	+	/**
664	+	* Extra checks that get done for all test cases.
665	+	*
666	+	* Triggers test case failure if any thread assertions have failed,
667	+	* by rethrowing, in the test harness thread, any exception recorded
668	+	* earlier by threadRecordFailure.
669	+	*
670	+	* Triggers test case failure if interrupt status is set in the main thread.
671	+	*/
672	+	public void tearDown() throws Exception {
673	+	Throwable t = threadFailure.getAndSet(null);
674	+	if (t != null) {
675	+	if (t instanceof Error)
676	+	throw (Error) t;
677	+	else if (t instanceof RuntimeException)
678	+	throw (RuntimeException) t;
679	+	else if (t instanceof Exception)
680	+	throw (Exception) t;
681	+	else {
682	+	AssertionFailedError afe =
683	+	new AssertionFailedError(t.toString());
684	+	afe.initCause(t);
685	+	throw afe;
686	+	}
687	+	}
688	+
689	+	if (Thread.interrupted())
690	+	tearDownFail("interrupt status set in main thread");
691	+
692	+	checkForkJoinPoolThreadLeaks();
693	+	}
694	+
695	+	/**
696	+	* Finds missing PoolCleaners
697	+	*/
698	+	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
699	+	Thread[] survivors = new Thread[7];
700	+	int count = Thread.enumerate(survivors);
701	+	for (int i = 0; i < count; i++) {
702	+	Thread thread = survivors[i];
703	+	String name = thread.getName();
704	+	if (name.startsWith("ForkJoinPool-")) {
705	+	// give thread some time to terminate
706	+	thread.join(LONG_DELAY_MS);
707	+	if (thread.isAlive())
708	+	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
709	+	thread);
710	+	}
711	+	}
712	+
713	+	if (!ForkJoinPool.commonPool()
714	+	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
715	+	tearDownFail("ForkJoin common pool thread stuck");
716	+	}
717	+
718	+	/**
719	+	* Just like fail(reason), but additionally recording (using
720	+	* threadRecordFailure) any AssertionFailedError thrown, so that
721	+	* the current testcase will fail.
722	+	*/
723		public void threadFail(String reason) {
724	<	threadFailed = true;
725	<	fail(reason);
724	>	try {
725	>	fail(reason);
726	>	} catch (AssertionFailedError t) {
727	>	threadRecordFailure(t);
728	>	throw t;
729	>	}
730		}
731
732	+	/**
733	+	* Just like assertTrue(b), but additionally recording (using
734	+	* threadRecordFailure) any AssertionFailedError thrown, so that
735	+	* the current testcase will fail.
736	+	*/
737		public void threadAssertTrue(boolean b) {
738	<	if (!b) {
83	<	threadFailed = true;
738	>	try {
739		assertTrue(b);
740	+	} catch (AssertionFailedError t) {
741	+	threadRecordFailure(t);
742	+	throw t;
743		}
744		}
745	+
746	+	/**
747	+	* Just like assertFalse(b), but additionally recording (using
748	+	* threadRecordFailure) any AssertionFailedError thrown, so that
749	+	* the current testcase will fail.
750	+	*/
751		public void threadAssertFalse(boolean b) {
752	<	if (b) {
89	<	threadFailed = true;
752	>	try {
753		assertFalse(b);
754	+	} catch (AssertionFailedError t) {
755	+	threadRecordFailure(t);
756	+	throw t;
757		}
758		}
759	+
760	+	/**
761	+	* Just like assertNull(x), but additionally recording (using
762	+	* threadRecordFailure) any AssertionFailedError thrown, so that
763	+	* the current testcase will fail.
764	+	*/
765		public void threadAssertNull(Object x) {
766	<	if (x != null) {
95	<	threadFailed = true;
766	>	try {
767		assertNull(x);
768	+	} catch (AssertionFailedError t) {
769	+	threadRecordFailure(t);
770	+	throw t;
771		}
772		}
773	+
774	+	/**
775	+	* Just like assertEquals(x, y), but additionally recording (using
776	+	* threadRecordFailure) any AssertionFailedError thrown, so that
777	+	* the current testcase will fail.
778	+	*/
779		public void threadAssertEquals(long x, long y) {
780	<	if (x != y) {
101	<	threadFailed = true;
780	>	try {
781		assertEquals(x, y);
782	+	} catch (AssertionFailedError t) {
783	+	threadRecordFailure(t);
784	+	throw t;
785		}
786		}
787	+
788	+	/**
789	+	* Just like assertEquals(x, y), but additionally recording (using
790	+	* threadRecordFailure) any AssertionFailedError thrown, so that
791	+	* the current testcase will fail.
792	+	*/
793		public void threadAssertEquals(Object x, Object y) {
794	<	if (x != y && (x == null || !x.equals(y))) {
107	<	threadFailed = true;
794	>	try {
795		assertEquals(x, y);
796	+	} catch (AssertionFailedError fail) {
797	+	threadRecordFailure(fail);
798	+	throw fail;
799	+	} catch (Throwable fail) {
800	+	threadUnexpectedException(fail);
801		}
802		}
803
804		/**
805	<	* Wait out termination of a thread pool or fail doing so
805	>	* Just like assertSame(x, y), but additionally recording (using
806	>	* threadRecordFailure) any AssertionFailedError thrown, so that
807	>	* the current testcase will fail.
808		*/
809	<	public void joinPool(ExecutorService exec) {
809	>	public void threadAssertSame(Object x, Object y) {
810		try {
811	<	exec.shutdown();
812	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
813	<	} catch(InterruptedException ie) {
814	<	fail("unexpected exception");
811	>	assertSame(x, y);
812	>	} catch (AssertionFailedError fail) {
813	>	threadRecordFailure(fail);
814	>	throw fail;
815		}
816		}
817
818	<	public static final long SHORT_DELAY_MS =   100;
819	<	public static final long SMALL_DELAY_MS =   500;
820	<	public static final long MEDIUM_DELAY_MS = 1000;
821	<	public static final long LONG_DELAY_MS =   5000;
818	>	/**
819	>	* Calls threadFail with message "should throw exception".
820	>	*/
821	>	public void threadShouldThrow() {
822	>	threadFail("should throw exception");
823	>	}
824	>
825	>	/**
826	>	* Calls threadFail with message "should throw" + exceptionName.
827	>	*/
828	>	public void threadShouldThrow(String exceptionName) {
829	>	threadFail("should throw " + exceptionName);
830	>	}
831	>
832	>	/**
833	>	* Records the given exception using {@link #threadRecordFailure},
834	>	* then rethrows the exception, wrapping it in an
835	>	* AssertionFailedError if necessary.
836	>	*/
837	>	public void threadUnexpectedException(Throwable t) {
838	>	threadRecordFailure(t);
839	>	t.printStackTrace();
840	>	if (t instanceof RuntimeException)
841	>	throw (RuntimeException) t;
842	>	else if (t instanceof Error)
843	>	throw (Error) t;
844	>	else {
845	>	AssertionFailedError afe =
846	>	new AssertionFailedError("unexpected exception: " + t);
847	>	afe.initCause(t);
848	>	throw afe;
849	>	}
850	>	}
851	>
852	>	/**
853	>	* Delays, via Thread.sleep, for the given millisecond delay, but
854	>	* if the sleep is shorter than specified, may re-sleep or yield
855	>	* until time elapses.  Ensures that the given time, as measured
856	>	* by System.nanoTime(), has elapsed.
857	>	*/
858	>	static void delay(long millis) throws InterruptedException {
859	>	long nanos = millis * (1000 * 1000);
860	>	final long wakeupTime = System.nanoTime() + nanos;
861	>	do {
862	>	if (millis > 0L)
863	>	Thread.sleep(millis);
864	>	else // too short to sleep
865	>	Thread.yield();
866	>	nanos = wakeupTime - System.nanoTime();
867	>	millis = nanos / (1000 * 1000);
868	>	} while (nanos >= 0L);
869	>	}
870	>
871	>	/**
872	>	* Allows use of try-with-resources with per-test thread pools.
873	>	*/
874	>	class PoolCleaner implements AutoCloseable {
875	>	private final ExecutorService pool;
876	>	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
877	>	public void close() { joinPool(pool); }
878	>	}
879	>
880	>	/**
881	>	* An extension of PoolCleaner that has an action to release the pool.
882	>	*/
883	>	class PoolCleanerWithReleaser extends PoolCleaner {
884	>	private final Runnable releaser;
885	>	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
886	>	super(pool);
887	>	this.releaser = releaser;
888	>	}
889	>	public void close() {
890	>	try {
891	>	releaser.run();
892	>	} finally {
893	>	super.close();
894	>	}
895	>	}
896	>	}
897	>
898	>	PoolCleaner cleaner(ExecutorService pool) {
899	>	return new PoolCleaner(pool);
900	>	}
901	>
902	>	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
903	>	return new PoolCleanerWithReleaser(pool, releaser);
904	>	}
905	>
906	>	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
907	>	return new PoolCleanerWithReleaser(pool, releaser(latch));
908	>	}
909	>
910	>	Runnable releaser(final CountDownLatch latch) {
911	>	return new Runnable() { public void run() {
912	>	do { latch.countDown(); }
913	>	while (latch.getCount() > 0);
914	>	}};
915	>	}
916	>
917	>	PoolCleaner cleaner(ExecutorService pool, AtomicBoolean flag) {
918	>	return new PoolCleanerWithReleaser(pool, releaser(flag));
919	>	}
920	>
921	>	Runnable releaser(final AtomicBoolean flag) {
922	>	return new Runnable() { public void run() { flag.set(true); }};
923	>	}
924	>
925	>	/**
926	>	* Waits out termination of a thread pool or fails doing so.
927	>	*/
928	>	void joinPool(ExecutorService pool) {
929	>	try {
930	>	pool.shutdown();
931	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
932	>	try {
933	>	threadFail("ExecutorService " + pool +
934	>	" did not terminate in a timely manner");
935	>	} finally {
936	>	// last resort, for the benefit of subsequent tests
937	>	pool.shutdownNow();
938	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
939	>	}
940	>	}
941	>	} catch (SecurityException ok) {
942	>	// Allowed in case test doesn't have privs
943	>	} catch (InterruptedException fail) {
944	>	threadFail("Unexpected InterruptedException");
945	>	}
946	>	}
947	>
948	>	/** Like Runnable, but with the freedom to throw anything */
949	>	interface Action { public void run() throws Throwable; }
950	>
951	>	/**
952	>	* Runs all the given actions in parallel, failing if any fail.
953	>	* Useful for running multiple variants of tests that are
954	>	* necessarily individually slow because they must block.
955	>	*/
956	>	void testInParallel(Action ... actions) {
957	>	ExecutorService pool = Executors.newCachedThreadPool();
958	>	try (PoolCleaner cleaner = cleaner(pool)) {
959	>	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
960	>	for (final Action action : actions)
961	>	futures.add(pool.submit(new CheckedRunnable() {
962	>	public void realRun() throws Throwable { action.run();}}));
963	>	for (Future<?> future : futures)
964	>	try {
965	>	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
966	>	} catch (ExecutionException ex) {
967	>	threadUnexpectedException(ex.getCause());
968	>	} catch (Exception ex) {
969	>	threadUnexpectedException(ex);
970	>	}
971	>	}
972	>	}
973	>
974	>	/**
975	>	* A debugging tool to print stack traces of most threads, as jstack does.
976	>	* Uninteresting threads are filtered out.
977	>	*/
978	>	static void dumpTestThreads() {
979	>	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
980	>	System.err.println("------ stacktrace dump start ------");
981	>	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
982	>	String name = info.getThreadName();
983	>	if ("Signal Dispatcher".equals(name))
984	>	continue;
985	>	if ("Reference Handler".equals(name)
986	>	&& info.getLockName().startsWith("java.lang.ref.Reference$Lock"))
987	>	continue;
988	>	if ("Finalizer".equals(name)
989	>	&& info.getLockName().startsWith("java.lang.ref.ReferenceQueue$Lock"))
990	>	continue;
991	>	if ("checkForWedgedTest".equals(name))
992	>	continue;
993	>	System.err.print(info);
994	>	}
995	>	System.err.println("------ stacktrace dump end ------");
996	>	}
997	>
998	>	/**
999	>	* Checks that thread does not terminate within the default
1000	>	* millisecond delay of {@code timeoutMillis()}.
1001	>	*/
1002	>	void assertThreadStaysAlive(Thread thread) {
1003	>	assertThreadStaysAlive(thread, timeoutMillis());
1004	>	}
1005	>
1006	>	/**
1007	>	* Checks that thread does not terminate within the given millisecond delay.
1008	>	*/
1009	>	void assertThreadStaysAlive(Thread thread, long millis) {
1010	>	try {
1011	>	// No need to optimize the failing case via Thread.join.
1012	>	delay(millis);
1013	>	assertTrue(thread.isAlive());
1014	>	} catch (InterruptedException fail) {
1015	>	threadFail("Unexpected InterruptedException");
1016	>	}
1017	>	}
1018	>
1019	>	/**
1020	>	* Checks that the threads do not terminate within the default
1021	>	* millisecond delay of {@code timeoutMillis()}.
1022	>	*/
1023	>	void assertThreadsStayAlive(Thread... threads) {
1024	>	assertThreadsStayAlive(timeoutMillis(), threads);
1025	>	}
1026	>
1027	>	/**
1028	>	* Checks that the threads do not terminate within the given millisecond delay.
1029	>	*/
1030	>	void assertThreadsStayAlive(long millis, Thread... threads) {
1031	>	try {
1032	>	// No need to optimize the failing case via Thread.join.
1033	>	delay(millis);
1034	>	for (Thread thread : threads)
1035	>	assertTrue(thread.isAlive());
1036	>	} catch (InterruptedException fail) {
1037	>	threadFail("Unexpected InterruptedException");
1038	>	}
1039	>	}
1040	>
1041	>	/**
1042	>	* Checks that future.get times out, with the default timeout of
1043	>	* {@code timeoutMillis()}.
1044	>	*/
1045	>	void assertFutureTimesOut(Future future) {
1046	>	assertFutureTimesOut(future, timeoutMillis());
1047	>	}
1048	>
1049	>	/**
1050	>	* Checks that future.get times out, with the given millisecond timeout.
1051	>	*/
1052	>	void assertFutureTimesOut(Future future, long timeoutMillis) {
1053	>	long startTime = System.nanoTime();
1054	>	try {
1055	>	future.get(timeoutMillis, MILLISECONDS);
1056	>	shouldThrow();
1057	>	} catch (TimeoutException success) {
1058	>	} catch (Exception fail) {
1059	>	threadUnexpectedException(fail);
1060	>	} finally { future.cancel(true); }
1061	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
1062	>	}
1063	>
1064	>	/**
1065	>	* Fails with message "should throw exception".
1066	>	*/
1067	>	public void shouldThrow() {
1068	>	fail("Should throw exception");
1069	>	}
1070
1071	+	/**
1072	+	* Fails with message "should throw " + exceptionName.
1073	+	*/
1074	+	public void shouldThrow(String exceptionName) {
1075	+	fail("Should throw " + exceptionName);
1076	+	}
1077
1078		/**
1079		* The number of elements to place in collections, arrays, etc.
#	Line 134 | Line 1082 | public class JSR166TestCase extends Test
1082
1083		// Some convenient Integer constants
1084
1085	<	public static final Integer zero = new Integer(0);
1086	<	public static final Integer one = new Integer(1);
1087	<	public static final Integer two = new Integer(2);
1088	<	public static final Integer three  = new Integer(3);
1085	>	public static final Integer zero  = new Integer(0);
1086	>	public static final Integer one   = new Integer(1);
1087	>	public static final Integer two   = new Integer(2);
1088	>	public static final Integer three = new Integer(3);
1089		public static final Integer four  = new Integer(4);
1090		public static final Integer five  = new Integer(5);
1091	<	public static final Integer six = new Integer(6);
1091	>	public static final Integer six   = new Integer(6);
1092		public static final Integer seven = new Integer(7);
1093		public static final Integer eight = new Integer(8);
1094	<	public static final Integer nine = new Integer(9);
1094	>	public static final Integer nine  = new Integer(9);
1095		public static final Integer m1  = new Integer(-1);
1096		public static final Integer m2  = new Integer(-2);
1097		public static final Integer m3  = new Integer(-3);
1098	<	public static final Integer m4 = new Integer(-4);
1099	<	public static final Integer m5 = new Integer(-5);
1098	>	public static final Integer m4  = new Integer(-4);
1099	>	public static final Integer m5  = new Integer(-5);
1100	>	public static final Integer m6  = new Integer(-6);
1101		public static final Integer m10 = new Integer(-10);
1102
1103	+	/**
1104	+	* Runs Runnable r with a security policy that permits precisely
1105	+	* the specified permissions.  If there is no current security
1106	+	* manager, the runnable is run twice, both with and without a
1107	+	* security manager.  We require that any security manager permit
1108	+	* getPolicy/setPolicy.
1109	+	*/
1110	+	public void runWithPermissions(Runnable r, Permission... permissions) {
1111	+	SecurityManager sm = System.getSecurityManager();
1112	+	if (sm == null) {
1113	+	r.run();
1114	+	}
1115	+	runWithSecurityManagerWithPermissions(r, permissions);
1116	+	}
1117
1118	<	// Some convenient Runnable classes
1118	>	/**
1119	>	* Runs Runnable r with a security policy that permits precisely
1120	>	* the specified permissions.  If there is no current security
1121	>	* manager, a temporary one is set for the duration of the
1122	>	* Runnable.  We require that any security manager permit
1123	>	* getPolicy/setPolicy.
1124	>	*/
1125	>	public void runWithSecurityManagerWithPermissions(Runnable r,
1126	>	Permission... permissions) {
1127	>	SecurityManager sm = System.getSecurityManager();
1128	>	if (sm == null) {
1129	>	Policy savedPolicy = Policy.getPolicy();
1130	>	try {
1131	>	Policy.setPolicy(permissivePolicy());
1132	>	System.setSecurityManager(new SecurityManager());
1133	>	runWithSecurityManagerWithPermissions(r, permissions);
1134	>	} finally {
1135	>	System.setSecurityManager(null);
1136	>	Policy.setPolicy(savedPolicy);
1137	>	}
1138	>	} else {
1139	>	Policy savedPolicy = Policy.getPolicy();
1140	>	AdjustablePolicy policy = new AdjustablePolicy(permissions);
1141	>	Policy.setPolicy(policy);
1142
1143	<	public static class NoOpRunnable implements Runnable {
1144	<	public void run() {}
1143	>	try {
1144	>	r.run();
1145	>	} finally {
1146	>	policy.addPermission(new SecurityPermission("setPolicy"));
1147	>	Policy.setPolicy(savedPolicy);
1148	>	}
1149	>	}
1150		}
1151
1152	<	public static class NoOpCallable implements Callable {
1153	<	public Object call() { return Boolean.TRUE; }
1152	>	/**
1153	>	* Runs a runnable without any permissions.
1154	>	*/
1155	>	public void runWithoutPermissions(Runnable r) {
1156	>	runWithPermissions(r);
1157		}
1158
1159	<	public class ShortRunnable implements Runnable {
1160	<	public void run() {
1161	<	try {
1162	<	Thread.sleep(SHORT_DELAY_MS);
1159	>	/**
1160	>	* A security policy where new permissions can be dynamically added
1161	>	* or all cleared.
1162	>	*/
1163	>	public static class AdjustablePolicy extends java.security.Policy {
1164	>	Permissions perms = new Permissions();
1165	>	AdjustablePolicy(Permission... permissions) {
1166	>	for (Permission permission : permissions)
1167	>	perms.add(permission);
1168	>	}
1169	>	void addPermission(Permission perm) { perms.add(perm); }
1170	>	void clearPermissions() { perms = new Permissions(); }
1171	>	public PermissionCollection getPermissions(CodeSource cs) {
1172	>	return perms;
1173	>	}
1174	>	public PermissionCollection getPermissions(ProtectionDomain pd) {
1175	>	return perms;
1176	>	}
1177	>	public boolean implies(ProtectionDomain pd, Permission p) {
1178	>	return perms.implies(p);
1179	>	}
1180	>	public void refresh() {}
1181	>	public String toString() {
1182	>	List<Permission> ps = new ArrayList<Permission>();
1183	>	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1184	>	ps.add(e.nextElement());
1185	>	return "AdjustablePolicy with permissions " + ps;
1186	>	}
1187	>	}
1188	>
1189	>	/**
1190	>	* Returns a policy containing all the permissions we ever need.
1191	>	*/
1192	>	public static Policy permissivePolicy() {
1193	>	return new AdjustablePolicy
1194	>	// Permissions j.u.c. needs directly
1195	>	(new RuntimePermission("modifyThread"),
1196	>	new RuntimePermission("getClassLoader"),
1197	>	new RuntimePermission("setContextClassLoader"),
1198	>	// Permissions needed to change permissions!
1199	>	new SecurityPermission("getPolicy"),
1200	>	new SecurityPermission("setPolicy"),
1201	>	new RuntimePermission("setSecurityManager"),
1202	>	// Permissions needed by the junit test harness
1203	>	new RuntimePermission("accessDeclaredMembers"),
1204	>	new PropertyPermission("*", "read"),
1205	>	new java.io.FilePermission("<<ALL FILES>>", "read"));
1206	>	}
1207	>
1208	>	/**
1209	>	* Sleeps until the given time has elapsed.
1210	>	* Throws AssertionFailedError if interrupted.
1211	>	*/
1212	>	void sleep(long millis) {
1213	>	try {
1214	>	delay(millis);
1215	>	} catch (InterruptedException fail) {
1216	>	AssertionFailedError afe =
1217	>	new AssertionFailedError("Unexpected InterruptedException");
1218	>	afe.initCause(fail);
1219	>	throw afe;
1220	>	}
1221	>	}
1222	>
1223	>	/**
1224	>	* Spin-waits up to the specified number of milliseconds for the given
1225	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1226	>	*/
1227	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1228	>	long startTime = System.nanoTime();
1229	>	for (;;) {
1230	>	Thread.State s = thread.getState();
1231	>	if (s == Thread.State.BLOCKED ||
1232	>	s == Thread.State.WAITING ||
1233	>	s == Thread.State.TIMED_WAITING)
1234	>	return;
1235	>	else if (s == Thread.State.TERMINATED)
1236	>	fail("Unexpected thread termination");
1237	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1238	>	threadAssertTrue(thread.isAlive());
1239	>	return;
1240		}
1241	<	catch(Exception e) {
1242	<	threadFail("unexpectedException");
1241	>	Thread.yield();
1242	>	}
1243	>	}
1244	>
1245	>	/**
1246	>	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
1247	>	* state: BLOCKED, WAITING, or TIMED_WAITING.
1248	>	*/
1249	>	void waitForThreadToEnterWaitState(Thread thread) {
1250	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
1251	>	}
1252	>
1253	>	/**
1254	>	* Returns the number of milliseconds since time given by
1255	>	* startNanoTime, which must have been previously returned from a
1256	>	* call to {@link System#nanoTime()}.
1257	>	*/
1258	>	static long millisElapsedSince(long startNanoTime) {
1259	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1260	>	}
1261	>
1262	>	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1263	>	//         long startTime = System.nanoTime();
1264	>	//         try {
1265	>	//             r.run();
1266	>	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1267	>	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1268	>	//             throw new AssertionFailedError("did not return promptly");
1269	>	//     }
1270	>
1271	>	//     void assertTerminatesPromptly(Runnable r) {
1272	>	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1273	>	//     }
1274	>
1275	>	/**
1276	>	* Checks that timed f.get() returns the expected value, and does not
1277	>	* wait for the timeout to elapse before returning.
1278	>	*/
1279	>	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1280	>	long startTime = System.nanoTime();
1281	>	try {
1282	>	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1283	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1284	>	if (millisElapsedSince(startTime) > timeoutMillis/2)
1285	>	throw new AssertionFailedError("timed get did not return promptly");
1286	>	}
1287	>
1288	>	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1289	>	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1290	>	}
1291	>
1292	>	/**
1293	>	* Returns a new started daemon Thread running the given runnable.
1294	>	*/
1295	>	Thread newStartedThread(Runnable runnable) {
1296	>	Thread t = new Thread(runnable);
1297	>	t.setDaemon(true);
1298	>	t.start();
1299	>	return t;
1300	>	}
1301	>
1302	>	/**
1303	>	* Waits for the specified time (in milliseconds) for the thread
1304	>	* to terminate (using {@link Thread#join(long)}), else interrupts
1305	>	* the thread (in the hope that it may terminate later) and fails.
1306	>	*/
1307	>	void awaitTermination(Thread t, long timeoutMillis) {
1308	>	try {
1309	>	t.join(timeoutMillis);
1310	>	} catch (InterruptedException fail) {
1311	>	threadUnexpectedException(fail);
1312	>	} finally {
1313	>	if (t.getState() != Thread.State.TERMINATED) {
1314	>	t.interrupt();
1315	>	threadFail("timed out waiting for thread to terminate");
1316		}
1317		}
1318		}
1319
1320	<	public class ShortInterruptedRunnable implements Runnable {
1321	<	public void run() {
1320	>	/**
1321	>	* Waits for LONG_DELAY_MS milliseconds for the thread to
1322	>	* terminate (using {@link Thread#join(long)}), else interrupts
1323	>	* the thread (in the hope that it may terminate later) and fails.
1324	>	*/
1325	>	void awaitTermination(Thread t) {
1326	>	awaitTermination(t, LONG_DELAY_MS);
1327	>	}
1328	>
1329	>	// Some convenient Runnable classes
1330	>
1331	>	public abstract class CheckedRunnable implements Runnable {
1332	>	protected abstract void realRun() throws Throwable;
1333	>
1334	>	public final void run() {
1335		try {
1336	<	Thread.sleep(SHORT_DELAY_MS);
1337	<	threadFail("should throw IE");
1336	>	realRun();
1337	>	} catch (Throwable fail) {
1338	>	threadUnexpectedException(fail);
1339		}
1340	<	catch(InterruptedException success) {
1340	>	}
1341	>	}
1342	>
1343	>	public abstract class RunnableShouldThrow implements Runnable {
1344	>	protected abstract void realRun() throws Throwable;
1345	>
1346	>	final Class<?> exceptionClass;
1347	>
1348	>	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
1349	>	this.exceptionClass = exceptionClass;
1350	>	}
1351	>
1352	>	public final void run() {
1353	>	try {
1354	>	realRun();
1355	>	threadShouldThrow(exceptionClass.getSimpleName());
1356	>	} catch (Throwable t) {
1357	>	if (! exceptionClass.isInstance(t))
1358	>	threadUnexpectedException(t);
1359		}
1360		}
1361		}
1362
1363	<	public class SmallRunnable implements Runnable {
1364	<	public void run() {
1363	>	public abstract class ThreadShouldThrow extends Thread {
1364	>	protected abstract void realRun() throws Throwable;
1365	>
1366	>	final Class<?> exceptionClass;
1367	>
1368	>	<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) {
1369	>	this.exceptionClass = exceptionClass;
1370	>	}
1371	>
1372	>	public final void run() {
1373		try {
1374	<	Thread.sleep(SMALL_DELAY_MS);
1374	>	realRun();
1375	>	threadShouldThrow(exceptionClass.getSimpleName());
1376	>	} catch (Throwable t) {
1377	>	if (! exceptionClass.isInstance(t))
1378	>	threadUnexpectedException(t);
1379		}
1380	<	catch(Exception e) {
1381	<	threadFail("unexpectedException");
1380	>	}
1381	>	}
1382	>
1383	>	public abstract class CheckedInterruptedRunnable implements Runnable {
1384	>	protected abstract void realRun() throws Throwable;
1385	>
1386	>	public final void run() {
1387	>	try {
1388	>	realRun();
1389	>	threadShouldThrow("InterruptedException");
1390	>	} catch (InterruptedException success) {
1391	>	threadAssertFalse(Thread.interrupted());
1392	>	} catch (Throwable fail) {
1393	>	threadUnexpectedException(fail);
1394		}
1395		}
1396		}
1397
1398	<	public class SmallCallable implements Callable {
1399	<	public Object call() {
1398	>	public abstract class CheckedCallable<T> implements Callable<T> {
1399	>	protected abstract T realCall() throws Throwable;
1400	>
1401	>	public final T call() {
1402		try {
1403	<	Thread.sleep(SMALL_DELAY_MS);
1403	>	return realCall();
1404	>	} catch (Throwable fail) {
1405	>	threadUnexpectedException(fail);
1406	>	return null;
1407		}
1408	<	catch(Exception e) {
1409	<	threadFail("unexpectedException");
1408	>	}
1409	>	}
1410	>
1411	>	public abstract class CheckedInterruptedCallable<T>
1412	>	implements Callable<T> {
1413	>	protected abstract T realCall() throws Throwable;
1414	>
1415	>	public final T call() {
1416	>	try {
1417	>	T result = realCall();
1418	>	threadShouldThrow("InterruptedException");
1419	>	return result;
1420	>	} catch (InterruptedException success) {
1421	>	threadAssertFalse(Thread.interrupted());
1422	>	} catch (Throwable fail) {
1423	>	threadUnexpectedException(fail);
1424		}
1425	+	return null;
1426	+	}
1427	+	}
1428	+
1429	+	public static class NoOpRunnable implements Runnable {
1430	+	public void run() {}
1431	+	}
1432	+
1433	+	public static class NoOpCallable implements Callable {
1434	+	public Object call() { return Boolean.TRUE; }
1435	+	}
1436	+
1437	+	public static final String TEST_STRING = "a test string";
1438	+
1439	+	public static class StringTask implements Callable<String> {
1440	+	final String value;
1441	+	public StringTask() { this(TEST_STRING); }
1442	+	public StringTask(String value) { this.value = value; }
1443	+	public String call() { return value; }
1444	+	}
1445	+
1446	+	public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1447	+	return new CheckedCallable<String>() {
1448	+	protected String realCall() {
1449	+	try {
1450	+	latch.await();
1451	+	} catch (InterruptedException quittingTime) {}
1452	+	return TEST_STRING;
1453	+	}};
1454	+	}
1455	+
1456	+	public Runnable countDowner(final CountDownLatch latch) {
1457	+	return new CheckedRunnable() {
1458	+	public void realRun() throws InterruptedException {
1459	+	latch.countDown();
1460	+	}};
1461	+	}
1462	+
1463	+	class LatchAwaiter extends CheckedRunnable {
1464	+	static final int NEW = 0;
1465	+	static final int RUNNING = 1;
1466	+	static final int DONE = 2;
1467	+	final CountDownLatch latch;
1468	+	int state = NEW;
1469	+	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1470	+	public void realRun() throws InterruptedException {
1471	+	state = 1;
1472	+	await(latch);
1473	+	state = 2;
1474	+	}
1475	+	}
1476	+
1477	+	public LatchAwaiter awaiter(CountDownLatch latch) {
1478	+	return new LatchAwaiter(latch);
1479	+	}
1480	+
1481	+	public void await(CountDownLatch latch, long timeoutMillis) {
1482	+	try {
1483	+	if (!latch.await(timeoutMillis, MILLISECONDS))
1484	+	fail("timed out waiting for CountDownLatch for "
1485	+	+ (timeoutMillis/1000) + " sec");
1486	+	} catch (Throwable fail) {
1487	+	threadUnexpectedException(fail);
1488	+	}
1489	+	}
1490	+
1491	+	public void await(CountDownLatch latch) {
1492	+	await(latch, LONG_DELAY_MS);
1493	+	}
1494	+
1495	+	public void await(Semaphore semaphore) {
1496	+	try {
1497	+	if (!semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS))
1498	+	fail("timed out waiting for Semaphore for "
1499	+	+ (LONG_DELAY_MS/1000) + " sec");
1500	+	} catch (Throwable fail) {
1501	+	threadUnexpectedException(fail);
1502	+	}
1503	+	}
1504	+
1505	+	//     /**
1506	+	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1507	+	//      */
1508	+	//     public void await(AtomicBoolean flag) {
1509	+	//         await(flag, LONG_DELAY_MS);
1510	+	//     }
1511	+
1512	+	//     /**
1513	+	//      * Spin-waits up to the specified timeout until flag becomes true.
1514	+	//      */
1515	+	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1516	+	//         long startTime = System.nanoTime();
1517	+	//         while (!flag.get()) {
1518	+	//             if (millisElapsedSince(startTime) > timeoutMillis)
1519	+	//                 throw new AssertionFailedError("timed out");
1520	+	//             Thread.yield();
1521	+	//         }
1522	+	//     }
1523	+
1524	+	public static class NPETask implements Callable<String> {
1525	+	public String call() { throw new NullPointerException(); }
1526	+	}
1527	+
1528	+	public static class CallableOne implements Callable<Integer> {
1529	+	public Integer call() { return one; }
1530	+	}
1531	+
1532	+	public class ShortRunnable extends CheckedRunnable {
1533	+	protected void realRun() throws Throwable {
1534	+	delay(SHORT_DELAY_MS);
1535	+	}
1536	+	}
1537	+
1538	+	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1539	+	protected void realRun() throws InterruptedException {
1540	+	delay(SHORT_DELAY_MS);
1541	+	}
1542	+	}
1543	+
1544	+	public class SmallRunnable extends CheckedRunnable {
1545	+	protected void realRun() throws Throwable {
1546	+	delay(SMALL_DELAY_MS);
1547	+	}
1548	+	}
1549	+
1550	+	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1551	+	protected void realRun() {
1552	+	try {
1553	+	delay(SMALL_DELAY_MS);
1554	+	} catch (InterruptedException ok) {}
1555	+	}
1556	+	}
1557	+
1558	+	public class SmallCallable extends CheckedCallable {
1559	+	protected Object realCall() throws InterruptedException {
1560	+	delay(SMALL_DELAY_MS);
1561		return Boolean.TRUE;
1562		}
1563		}
1564
1565	<	public class SmallInterruptedRunnable implements Runnable {
1565	>	public class MediumRunnable extends CheckedRunnable {
1566	>	protected void realRun() throws Throwable {
1567	>	delay(MEDIUM_DELAY_MS);
1568	>	}
1569	>	}
1570	>
1571	>	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1572	>	protected void realRun() throws InterruptedException {
1573	>	delay(MEDIUM_DELAY_MS);
1574	>	}
1575	>	}
1576	>
1577	>	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1578	>	return new CheckedRunnable() {
1579	>	protected void realRun() {
1580	>	try {
1581	>	delay(timeoutMillis);
1582	>	} catch (InterruptedException ok) {}
1583	>	}};
1584	>	}
1585	>
1586	>	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1587	>	protected void realRun() {
1588	>	try {
1589	>	delay(MEDIUM_DELAY_MS);
1590	>	} catch (InterruptedException ok) {}
1591	>	}
1592	>	}
1593	>
1594	>	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1595	>	protected void realRun() {
1596	>	try {
1597	>	delay(LONG_DELAY_MS);
1598	>	} catch (InterruptedException ok) {}
1599	>	}
1600	>	}
1601	>
1602	>	/**
1603	>	* For use as ThreadFactory in constructors
1604	>	*/
1605	>	public static class SimpleThreadFactory implements ThreadFactory {
1606	>	public Thread newThread(Runnable r) {
1607	>	return new Thread(r);
1608	>	}
1609	>	}
1610	>
1611	>	public interface TrackedRunnable extends Runnable {
1612	>	boolean isDone();
1613	>	}
1614	>
1615	>	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1616	>	return new TrackedRunnable() {
1617	>	private volatile boolean done = false;
1618	>	public boolean isDone() { return done; }
1619	>	public void run() {
1620	>	try {
1621	>	delay(timeoutMillis);
1622	>	done = true;
1623	>	} catch (InterruptedException ok) {}
1624	>	}
1625	>	};
1626	>	}
1627	>
1628	>	public static class TrackedShortRunnable implements Runnable {
1629	>	public volatile boolean done = false;
1630		public void run() {
1631		try {
1632	<	Thread.sleep(SMALL_DELAY_MS);
1633	<	threadFail("should throw IE");
1634	<	}
216	<	catch(InterruptedException success) {
217	<	}
1632	>	delay(SHORT_DELAY_MS);
1633	>	done = true;
1634	>	} catch (InterruptedException ok) {}
1635		}
1636		}
1637
1638	+	public static class TrackedSmallRunnable implements Runnable {
1639	+	public volatile boolean done = false;
1640	+	public void run() {
1641	+	try {
1642	+	delay(SMALL_DELAY_MS);
1643	+	done = true;
1644	+	} catch (InterruptedException ok) {}
1645	+	}
1646	+	}
1647
1648	<	public class MediumRunnable implements Runnable {
1648	>	public static class TrackedMediumRunnable implements Runnable {
1649	>	public volatile boolean done = false;
1650		public void run() {
1651		try {
1652	<	Thread.sleep(MEDIUM_DELAY_MS);
1653	<	}
1654	<	catch(Exception e) {
1655	<	threadFail("unexpectedException");
1656	<	}
1652	>	delay(MEDIUM_DELAY_MS);
1653	>	done = true;
1654	>	} catch (InterruptedException ok) {}
1655	>	}
1656	>	}
1657	>
1658	>	public static class TrackedLongRunnable implements Runnable {
1659	>	public volatile boolean done = false;
1660	>	public void run() {
1661	>	try {
1662	>	delay(LONG_DELAY_MS);
1663	>	done = true;
1664	>	} catch (InterruptedException ok) {}
1665		}
1666		}
1667
1668	<	public class MediumInterruptedRunnable implements Runnable {
1668	>	public static class TrackedNoOpRunnable implements Runnable {
1669	>	public volatile boolean done = false;
1670		public void run() {
1671	+	done = true;
1672	+	}
1673	+	}
1674	+
1675	+	public static class TrackedCallable implements Callable {
1676	+	public volatile boolean done = false;
1677	+	public Object call() {
1678		try {
1679	<	Thread.sleep(MEDIUM_DELAY_MS);
1680	<	threadFail("should throw IE");
1679	>	delay(SMALL_DELAY_MS);
1680	>	done = true;
1681	>	} catch (InterruptedException ok) {}
1682	>	return Boolean.TRUE;
1683	>	}
1684	>	}
1685	>
1686	>	/**
1687	>	* Analog of CheckedRunnable for RecursiveAction
1688	>	*/
1689	>	public abstract class CheckedRecursiveAction extends RecursiveAction {
1690	>	protected abstract void realCompute() throws Throwable;
1691	>
1692	>	@Override protected final void compute() {
1693	>	try {
1694	>	realCompute();
1695	>	} catch (Throwable fail) {
1696	>	threadUnexpectedException(fail);
1697		}
1698	<	catch(InterruptedException success) {
1698	>	}
1699	>	}
1700	>
1701	>	/**
1702	>	* Analog of CheckedCallable for RecursiveTask
1703	>	*/
1704	>	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1705	>	protected abstract T realCompute() throws Throwable;
1706	>
1707	>	@Override protected final T compute() {
1708	>	try {
1709	>	return realCompute();
1710	>	} catch (Throwable fail) {
1711	>	threadUnexpectedException(fail);
1712	>	return null;
1713		}
1714		}
1715		}
1716
1717	<	public class MediumPossiblyInterruptedRunnable implements Runnable {
1718	<	public void run() {
1717	>	/**
1718	>	* For use as RejectedExecutionHandler in constructors
1719	>	*/
1720	>	public static class NoOpREHandler implements RejectedExecutionHandler {
1721	>	public void rejectedExecution(Runnable r,
1722	>	ThreadPoolExecutor executor) {}
1723	>	}
1724	>
1725	>	/**
1726	>	* A CyclicBarrier that uses timed await and fails with
1727	>	* AssertionFailedErrors instead of throwing checked exceptions.
1728	>	*/
1729	>	public class CheckedBarrier extends CyclicBarrier {
1730	>	public CheckedBarrier(int parties) { super(parties); }
1731	>
1732	>	public int await() {
1733		try {
1734	<	Thread.sleep(MEDIUM_DELAY_MS);
1734	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1735	>	} catch (TimeoutException timedOut) {
1736	>	throw new AssertionFailedError("timed out");
1737	>	} catch (Exception fail) {
1738	>	AssertionFailedError afe =
1739	>	new AssertionFailedError("Unexpected exception: " + fail);
1740	>	afe.initCause(fail);
1741	>	throw afe;
1742		}
1743	<	catch(InterruptedException success) {
1743	>	}
1744	>	}
1745	>
1746	>	void checkEmpty(BlockingQueue q) {
1747	>	try {
1748	>	assertTrue(q.isEmpty());
1749	>	assertEquals(0, q.size());
1750	>	assertNull(q.peek());
1751	>	assertNull(q.poll());
1752	>	assertNull(q.poll(0, MILLISECONDS));
1753	>	assertEquals(q.toString(), "[]");
1754	>	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1755	>	assertFalse(q.iterator().hasNext());
1756	>	try {
1757	>	q.element();
1758	>	shouldThrow();
1759	>	} catch (NoSuchElementException success) {}
1760	>	try {
1761	>	q.iterator().next();
1762	>	shouldThrow();
1763	>	} catch (NoSuchElementException success) {}
1764	>	try {
1765	>	q.remove();
1766	>	shouldThrow();
1767	>	} catch (NoSuchElementException success) {}
1768	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1769	>	}
1770	>
1771	>	void assertSerialEquals(Object x, Object y) {
1772	>	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1773	>	}
1774	>
1775	>	void assertNotSerialEquals(Object x, Object y) {
1776	>	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1777	>	}
1778	>
1779	>	byte[] serialBytes(Object o) {
1780	>	try {
1781	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1782	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1783	>	oos.writeObject(o);
1784	>	oos.flush();
1785	>	oos.close();
1786	>	return bos.toByteArray();
1787	>	} catch (Throwable fail) {
1788	>	threadUnexpectedException(fail);
1789	>	return new byte[0];
1790	>	}
1791	>	}
1792	>
1793	>	@SuppressWarnings("unchecked")
1794	>	<T> T serialClone(T o) {
1795	>	try {
1796	>	ObjectInputStream ois = new ObjectInputStream
1797	>	(new ByteArrayInputStream(serialBytes(o)));
1798	>	T clone = (T) ois.readObject();
1799	>	assertSame(o.getClass(), clone.getClass());
1800	>	return clone;
1801	>	} catch (Throwable fail) {
1802	>	threadUnexpectedException(fail);
1803	>	return null;
1804	>	}
1805	>	}
1806	>
1807	>	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1808	>	Runnable... throwingActions) {
1809	>	for (Runnable throwingAction : throwingActions) {
1810	>	boolean threw = false;
1811	>	try { throwingAction.run(); }
1812	>	catch (Throwable t) {
1813	>	threw = true;
1814	>	if (!expectedExceptionClass.isInstance(t)) {
1815	>	AssertionFailedError afe =
1816	>	new AssertionFailedError
1817	>	("Expected " + expectedExceptionClass.getName() +
1818	>	", got " + t.getClass().getName());
1819	>	afe.initCause(t);
1820	>	threadUnexpectedException(afe);
1821	>	}
1822		}
1823	+	if (!threw)
1824	+	shouldThrow(expectedExceptionClass.getName());
1825		}
1826		}
1827	<
1827	>
1828	>	public void assertIteratorExhausted(Iterator<?> it) {
1829	>	try {
1830	>	it.next();
1831	>	shouldThrow();
1832	>	} catch (NoSuchElementException success) {}
1833	>	assertFalse(it.hasNext());
1834	>	}
1835		}

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