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Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.25 by dl, Tue Mar 1 01:32:00 2005 UTC vs.
Revision 1.134 by jsr166, Sun Jun 14 20:58:14 2015 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
5	<	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	<	* Pat Fisher, Mike Judd.
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	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
10	>	import static java.util.concurrent.TimeUnit.NANOSECONDS;
11	>
12	>	import java.io.ByteArrayInputStream;
13	>	import java.io.ByteArrayOutputStream;
14	>	import java.io.ObjectInputStream;
15	>	import java.io.ObjectOutputStream;
16	>	import java.lang.management.ManagementFactory;
17	>	import java.lang.management.ThreadInfo;
18	>	import java.lang.reflect.Constructor;
19	>	import java.lang.reflect.Method;
20	>	import java.lang.reflect.Modifier;
21	>	import java.security.CodeSource;
22	>	import java.security.Permission;
23	>	import java.security.PermissionCollection;
24	>	import java.security.Permissions;
25	>	import java.security.Policy;
26	>	import java.security.ProtectionDomain;
27	>	import java.security.SecurityPermission;
28	>	import java.util.ArrayList;
29	>	import java.util.Arrays;
30	>	import java.util.Date;
31	>	import java.util.Enumeration;
32	>	import java.util.Iterator;
33	>	import java.util.List;
34	>	import java.util.NoSuchElementException;
35	>	import java.util.PropertyPermission;
36	>	import java.util.concurrent.BlockingQueue;
37	>	import java.util.concurrent.Callable;
38	>	import java.util.concurrent.CountDownLatch;
39	>	import java.util.concurrent.CyclicBarrier;
40	>	import java.util.concurrent.ExecutorService;
41	>	import java.util.concurrent.Future;
42	>	import java.util.concurrent.RecursiveAction;
43	>	import java.util.concurrent.RecursiveTask;
44	>	import java.util.concurrent.RejectedExecutionHandler;
45	>	import java.util.concurrent.Semaphore;
46	>	import java.util.concurrent.ThreadFactory;
47	>	import java.util.concurrent.ThreadPoolExecutor;
48	>	import java.util.concurrent.TimeoutException;
49	>	import java.util.concurrent.atomic.AtomicReference;
50	>	import java.util.regex.Pattern;
51	>
52	>	import junit.framework.AssertionFailedError;
53	>	import junit.framework.Test;
54	>	import junit.framework.TestCase;
55	>	import junit.framework.TestResult;
56	>	import junit.framework.TestSuite;
57
58		/**
59		* Base class for JSR166 Junit TCK tests.  Defines some constants,
60		* utility methods and classes, as well as a simple framework for
61		* helping to make sure that assertions failing in generated threads
62		* cause the associated test that generated them to itself fail (which
63	<	* JUnit doe not otherwise arrange).  The rules for creating such
63	>	* JUnit does not otherwise arrange).  The rules for creating such
64		* tests are:
65		*
66		* <ol>
67		*
68		* <li> All assertions in code running in generated threads must use
69	<	* the forms {@link #threadFail} , {@link #threadAssertTrue} {@link
69	>	* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
70		* #threadAssertEquals}, or {@link #threadAssertNull}, (not
71	<	* <tt>fail</tt>, <tt>assertTrue</tt>, etc.) It is OK (but not
71	>	* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
72		* particularly recommended) for other code to use these forms too.
73		* Only the most typically used JUnit assertion methods are defined
74		* this way, but enough to live with.</li>
75		*
76		* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
77	<	* to invoke <tt>super.setUp</tt> and <tt>super.tearDown</tt> within
77	>	* to invoke {@code super.setUp} and {@code super.tearDown} within
78		* them. These methods are used to clear and check for thread
79		* assertion failures.</li>
80		*
81	<	* <li>All delays and timeouts must use one of the constants <tt>
82	<	* SHORT_DELAY_MS</tt>, <tt> SMALL_DELAY_MS</tt>, <tt> MEDIUM_DELAY_MS</tt>,
83	<	* <tt> LONG_DELAY_MS</tt>. The idea here is that a SHORT is always
81	>	* <li>All delays and timeouts must use one of the constants {@code
82	>	* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
83	>	* {@code LONG_DELAY_MS}. The idea here is that a SHORT is always
84		* discriminable from zero time, and always allows enough time for the
85		* small amounts of computation (creating a thread, calling a few
86		* methods, etc) needed to reach a timeout point. Similarly, a SMALL
87		* is always discriminable as larger than SHORT and smaller than
88		* MEDIUM.  And so on. These constants are set to conservative values,
89		* but even so, if there is ever any doubt, they can all be increased
90	<	* in one spot to rerun tests on slower platforms</li>
90	>	* in one spot to rerun tests on slower platforms.</li>
91		*
92		* <li> All threads generated must be joined inside each test case
93	<	* method (or <tt>fail</tt> to do so) before returning from the
94	<	* method. The <tt> joinPool</tt> method can be used to do this when
93	>	* method (or {@code fail} to do so) before returning from the
94	>	* method. The {@code joinPool} method can be used to do this when
95		* using Executors.</li>
96		*
97		* </ol>
98		*
99	<	* <p> <b>Other notes</b>
99	>	* <p><b>Other notes</b>
100		* <ul>
101		*
102		* <li> Usually, there is one testcase method per JSR166 method
#	Line 63 | Line 106 | import java.security.*;
106		* "normal" behaviors differ significantly. And sometimes testcases
107		* cover multiple methods when they cannot be tested in
108		* isolation.</li>
109	<	*
109	>	*
110		* <li> The documentation style for testcases is to provide as javadoc
111		* a simple sentence or two describing the property that the testcase
112		* method purports to test. The javadocs do not say anything about how
#	Line 80 | Line 123 | import java.security.*;
123		* any particular package to simplify things for people integrating
124		* them in TCK test suites.</li>
125		*
126	<	* <li> As a convenience, the <tt>main</tt> of this class (JSR166TestCase)
126	>	* <li> As a convenience, the {@code main} of this class (JSR166TestCase)
127		* runs all JSR166 unit tests.</li>
128		*
129		* </ul>
130		*/
131		public class JSR166TestCase extends TestCase {
132	+	private static final boolean useSecurityManager =
133	+	Boolean.getBoolean("jsr166.useSecurityManager");
134	+
135	+	protected static final boolean expensiveTests =
136	+	Boolean.getBoolean("jsr166.expensiveTests");
137	+
138	+	/**
139	+	* If true, also run tests that are not part of the official tck
140	+	* because they test unspecified implementation details.
141	+	*/
142	+	protected static final boolean testImplementationDetails =
143	+	Boolean.getBoolean("jsr166.testImplementationDetails");
144	+
145	+	/**
146	+	* If true, report on stdout all "slow" tests, that is, ones that
147	+	* take more than profileThreshold milliseconds to execute.
148	+	*/
149	+	private static final boolean profileTests =
150	+	Boolean.getBoolean("jsr166.profileTests");
151	+
152	+	/**
153	+	* The number of milliseconds that tests are permitted for
154	+	* execution without being reported, when profileTests is set.
155	+	*/
156	+	private static final long profileThreshold =
157	+	Long.getLong("jsr166.profileThreshold", 100);
158	+
159	+	/**
160	+	* The number of repetitions per test (for tickling rare bugs).
161	+	*/
162	+	private static final int runsPerTest =
163	+	Integer.getInteger("jsr166.runsPerTest", 1);
164	+
165	+	/**
166	+	* The number of repetitions of the test suite (for finding leaks?).
167	+	*/
168	+	private static final int suiteRuns =
169	+	Integer.getInteger("jsr166.suiteRuns", 1);
170	+
171	+	public JSR166TestCase() { super(); }
172	+	public JSR166TestCase(String name) { super(name); }
173	+
174	+	/**
175	+	* A filter for tests to run, matching strings of the form
176	+	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
177	+	* Usefully combined with jsr166.runsPerTest.
178	+	*/
179	+	private static final Pattern methodFilter = methodFilter();
180	+
181	+	private static Pattern methodFilter() {
182	+	String regex = System.getProperty("jsr166.methodFilter");
183	+	return (regex == null) ? null : Pattern.compile(regex);
184	+	}
185	+
186	+	protected void runTest() throws Throwable {
187	+	if (methodFilter == null
188	+	|| methodFilter.matcher(toString()).find()) {
189	+	for (int i = 0; i < runsPerTest; i++) {
190	+	if (profileTests)
191	+	runTestProfiled();
192	+	else
193	+	super.runTest();
194	+	}
195	+	}
196	+	}
197	+
198	+	protected void runTestProfiled() throws Throwable {
199	+	// Warmup run, notably to trigger all needed classloading.
200	+	super.runTest();
201	+	long t0 = System.nanoTime();
202	+	try {
203	+	super.runTest();
204	+	} finally {
205	+	long elapsedMillis = millisElapsedSince(t0);
206	+	if (elapsedMillis >= profileThreshold)
207	+	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
208	+	}
209	+	}
210	+
211		/**
212	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
213	<	*/
214	<	public static void main (String[] args) {
215	<	int iters = 1;
216	<	if (args.length > 0)
217	<	iters = Integer.parseInt(args[0]);
218	<	Test s = suite();
219	<	for (int i = 0; i < iters; ++i) {
220	<	junit.textui.TestRunner.run (s);
212	>	* Runs all JSR166 unit tests using junit.textui.TestRunner.
213	>	*/
214	>	public static void main(String[] args) {
215	>	main(suite(), args);
216	>	}
217	>
218	>	/**
219	>	* Runs all unit tests in the given test suite.
220	>	* Actual behavior influenced by jsr166.* system properties.
221	>	*/
222	>	static void main(Test suite, String[] args) {
223	>	if (useSecurityManager) {
224	>	System.err.println("Setting a permissive security manager");
225	>	Policy.setPolicy(permissivePolicy());
226	>	System.setSecurityManager(new SecurityManager());
227	>	}
228	>	for (int i = 0; i < suiteRuns; i++) {
229	>	TestResult result = junit.textui.TestRunner.run(suite);
230	>	if (!result.wasSuccessful())
231	>	System.exit(1);
232		System.gc();
233		System.runFinalization();
234		}
102	–	System.exit(0);
235		}
236
237	+	public static TestSuite newTestSuite(Object... suiteOrClasses) {
238	+	TestSuite suite = new TestSuite();
239	+	for (Object suiteOrClass : suiteOrClasses) {
240	+	if (suiteOrClass instanceof TestSuite)
241	+	suite.addTest((TestSuite) suiteOrClass);
242	+	else if (suiteOrClass instanceof Class)
243	+	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
244	+	else
245	+	throw new ClassCastException("not a test suite or class");
246	+	}
247	+	return suite;
248	+	}
249	+
250	+	public static void addNamedTestClasses(TestSuite suite,
251	+	String... testClassNames) {
252	+	for (String testClassName : testClassNames) {
253	+	try {
254	+	Class<?> testClass = Class.forName(testClassName);
255	+	Method m = testClass.getDeclaredMethod("suite",
256	+	new Class<?>[0]);
257	+	suite.addTest(newTestSuite((Test)m.invoke(null)));
258	+	} catch (Exception e) {
259	+	throw new Error("Missing test class", e);
260	+	}
261	+	}
262	+	}
263	+
264	+	public static final double JAVA_CLASS_VERSION;
265	+	public static final String JAVA_SPECIFICATION_VERSION;
266	+	static {
267	+	try {
268	+	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
269	+	new java.security.PrivilegedAction<Double>() {
270	+	public Double run() {
271	+	return Double.valueOf(System.getProperty("java.class.version"));}});
272	+	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
273	+	new java.security.PrivilegedAction<String>() {
274	+	public String run() {
275	+	return System.getProperty("java.specification.version");}});
276	+	} catch (Throwable t) {
277	+	throw new Error(t);
278	+	}
279	+	}
280	+
281	+	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
282	+	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
283	+	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
284	+	public static boolean atLeastJava9() { return JAVA_CLASS_VERSION >= 53.0; }
285	+
286		/**
287	<	* Collects all JSR166 unit tests as one suite
288	<	*/
289	<	public static Test suite ( ) {
290	<	TestSuite suite = new TestSuite("JSR166 Unit Tests");
291	<
292	<	suite.addTest(new TestSuite(AbstractExecutorServiceTest.class));
293	<	suite.addTest(new TestSuite(AbstractQueueTest.class));
294	<	suite.addTest(new TestSuite(AbstractQueuedSynchronizerTest.class));
295	<	suite.addTest(new TestSuite(AbstractQueuedLongSynchronizerTest.class));
296	<	suite.addTest(new TestSuite(ArrayBlockingQueueTest.class));
297	<	suite.addTest(new TestSuite(ArrayDequeTest.class));
298	<	suite.addTest(new TestSuite(AtomicBooleanTest.class));
299	<	suite.addTest(new TestSuite(AtomicIntegerArrayTest.class));
300	<	suite.addTest(new TestSuite(AtomicIntegerFieldUpdaterTest.class));
301	<	suite.addTest(new TestSuite(AtomicIntegerTest.class));
302	<	suite.addTest(new TestSuite(AtomicLongArrayTest.class));
303	<	suite.addTest(new TestSuite(AtomicLongFieldUpdaterTest.class));
304	<	suite.addTest(new TestSuite(AtomicLongTest.class));
305	<	suite.addTest(new TestSuite(AtomicMarkableReferenceTest.class));
306	<	suite.addTest(new TestSuite(AtomicReferenceArrayTest.class));
307	<	suite.addTest(new TestSuite(AtomicReferenceFieldUpdaterTest.class));
308	<	suite.addTest(new TestSuite(AtomicReferenceTest.class));
309	<	suite.addTest(new TestSuite(AtomicStampedReferenceTest.class));
310	<	suite.addTest(new TestSuite(ConcurrentHashMapTest.class));
311	<	suite.addTest(new TestSuite(ConcurrentLinkedQueueTest.class));
312	<	suite.addTest(new TestSuite(ConcurrentSkipListMapTest.class));
313	<	suite.addTest(new TestSuite(ConcurrentSkipListSubMapTest.class));
314	<	suite.addTest(new TestSuite(ConcurrentSkipListSetTest.class));
315	<	suite.addTest(new TestSuite(ConcurrentSkipListSubSetTest.class));
316	<	suite.addTest(new TestSuite(CopyOnWriteArrayListTest.class));
317	<	suite.addTest(new TestSuite(CopyOnWriteArraySetTest.class));
318	<	suite.addTest(new TestSuite(CountDownLatchTest.class));
319	<	suite.addTest(new TestSuite(CyclicBarrierTest.class));
320	<	suite.addTest(new TestSuite(DelayQueueTest.class));
321	<	suite.addTest(new TestSuite(ExchangerTest.class));
322	<	suite.addTest(new TestSuite(ExecutorsTest.class));
323	<	suite.addTest(new TestSuite(ExecutorCompletionServiceTest.class));
324	<	suite.addTest(new TestSuite(FutureTaskTest.class));
325	<	suite.addTest(new TestSuite(LinkedBlockingDequeTest.class));
326	<	suite.addTest(new TestSuite(LinkedBlockingQueueTest.class));
327	<	suite.addTest(new TestSuite(LinkedListTest.class));
328	<	suite.addTest(new TestSuite(LockSupportTest.class));
329	<	suite.addTest(new TestSuite(PriorityBlockingQueueTest.class));
330	<	suite.addTest(new TestSuite(PriorityQueueTest.class));
331	<	suite.addTest(new TestSuite(ReentrantLockTest.class));
332	<	suite.addTest(new TestSuite(ReentrantReadWriteLockTest.class));
333	<	suite.addTest(new TestSuite(ScheduledExecutorTest.class));
334	<	suite.addTest(new TestSuite(SemaphoreTest.class));
335	<	suite.addTest(new TestSuite(SynchronousQueueTest.class));
336	<	suite.addTest(new TestSuite(SystemTest.class));
337	<	suite.addTest(new TestSuite(ThreadLocalTest.class));
338	<	suite.addTest(new TestSuite(ThreadPoolExecutorTest.class));
339	<	suite.addTest(new TestSuite(ThreadTest.class));
340	<	suite.addTest(new TestSuite(TimeUnitTest.class));
341	<	suite.addTest(new TestSuite(TreeMapTest.class));
342	<	suite.addTest(new TestSuite(TreeSetTest.class));
343	<
287	>	* Collects all JSR166 unit tests as one suite.
288	>	*/
289	>	public static Test suite() {
290	>	// Java7+ test classes
291	>	TestSuite suite = newTestSuite(
292	>	ForkJoinPoolTest.suite(),
293	>	ForkJoinTaskTest.suite(),
294	>	RecursiveActionTest.suite(),
295	>	RecursiveTaskTest.suite(),
296	>	LinkedTransferQueueTest.suite(),
297	>	PhaserTest.suite(),
298	>	ThreadLocalRandomTest.suite(),
299	>	AbstractExecutorServiceTest.suite(),
300	>	AbstractQueueTest.suite(),
301	>	AbstractQueuedSynchronizerTest.suite(),
302	>	AbstractQueuedLongSynchronizerTest.suite(),
303	>	ArrayBlockingQueueTest.suite(),
304	>	ArrayDequeTest.suite(),
305	>	AtomicBooleanTest.suite(),
306	>	AtomicIntegerArrayTest.suite(),
307	>	AtomicIntegerFieldUpdaterTest.suite(),
308	>	AtomicIntegerTest.suite(),
309	>	AtomicLongArrayTest.suite(),
310	>	AtomicLongFieldUpdaterTest.suite(),
311	>	AtomicLongTest.suite(),
312	>	AtomicMarkableReferenceTest.suite(),
313	>	AtomicReferenceArrayTest.suite(),
314	>	AtomicReferenceFieldUpdaterTest.suite(),
315	>	AtomicReferenceTest.suite(),
316	>	AtomicStampedReferenceTest.suite(),
317	>	ConcurrentHashMapTest.suite(),
318	>	ConcurrentLinkedDequeTest.suite(),
319	>	ConcurrentLinkedQueueTest.suite(),
320	>	ConcurrentSkipListMapTest.suite(),
321	>	ConcurrentSkipListSubMapTest.suite(),
322	>	ConcurrentSkipListSetTest.suite(),
323	>	ConcurrentSkipListSubSetTest.suite(),
324	>	CopyOnWriteArrayListTest.suite(),
325	>	CopyOnWriteArraySetTest.suite(),
326	>	CountDownLatchTest.suite(),
327	>	CyclicBarrierTest.suite(),
328	>	DelayQueueTest.suite(),
329	>	EntryTest.suite(),
330	>	ExchangerTest.suite(),
331	>	ExecutorsTest.suite(),
332	>	ExecutorCompletionServiceTest.suite(),
333	>	FutureTaskTest.suite(),
334	>	LinkedBlockingDequeTest.suite(),
335	>	LinkedBlockingQueueTest.suite(),
336	>	LinkedListTest.suite(),
337	>	LockSupportTest.suite(),
338	>	PriorityBlockingQueueTest.suite(),
339	>	PriorityQueueTest.suite(),
340	>	ReentrantLockTest.suite(),
341	>	ReentrantReadWriteLockTest.suite(),
342	>	ScheduledExecutorTest.suite(),
343	>	ScheduledExecutorSubclassTest.suite(),
344	>	SemaphoreTest.suite(),
345	>	SynchronousQueueTest.suite(),
346	>	SystemTest.suite(),
347	>	ThreadLocalTest.suite(),
348	>	ThreadPoolExecutorTest.suite(),
349	>	ThreadPoolExecutorSubclassTest.suite(),
350	>	ThreadTest.suite(),
351	>	TimeUnitTest.suite(),
352	>	TreeMapTest.suite(),
353	>	TreeSetTest.suite(),
354	>	TreeSubMapTest.suite(),
355	>	TreeSubSetTest.suite());
356	>
357	>	// Java8+ test classes
358	>	if (atLeastJava8()) {
359	>	String[] java8TestClassNames = {
360	>	"Atomic8Test",
361	>	"CompletableFutureTest",
362	>	"ConcurrentHashMap8Test",
363	>	"CountedCompleterTest",
364	>	"DoubleAccumulatorTest",
365	>	"DoubleAdderTest",
366	>	"ForkJoinPool8Test",
367	>	"ForkJoinTask8Test",
368	>	"LongAccumulatorTest",
369	>	"LongAdderTest",
370	>	"SplittableRandomTest",
371	>	"StampedLockTest",
372	>	"ThreadLocalRandom8Test",
373	>	};
374	>	addNamedTestClasses(suite, java8TestClassNames);
375	>	}
376	>
377	>	// Java9+ test classes
378	>	if (atLeastJava9()) {
379	>	String[] java9TestClassNames = {
380	>	"ThreadPoolExecutor9Test",
381	>	};
382	>	addNamedTestClasses(suite, java9TestClassNames);
383	>	}
384	>
385		return suite;
386		}
387
388	+	/** Returns list of junit-style test method names in given class. */
389	+	public static ArrayList<String> testMethodNames(Class<?> testClass) {
390	+	Method[] methods = testClass.getDeclaredMethods();
391	+	ArrayList<String> names = new ArrayList<String>(methods.length);
392	+	for (Method method : methods) {
393	+	if (method.getName().startsWith("test")
394	+	&& Modifier.isPublic(method.getModifiers())
395	+	// method.getParameterCount() requires jdk8+
396	+	&& method.getParameterTypes().length == 0) {
397	+	names.add(method.getName());
398	+	}
399	+	}
400	+	return names;
401	+	}
402	+
403	+	/**
404	+	* Returns junit-style testSuite for the given test class, but
405	+	* parameterized by passing extra data to each test.
406	+	*/
407	+	public static <ExtraData> Test parameterizedTestSuite
408	+	(Class<? extends JSR166TestCase> testClass,
409	+	Class<ExtraData> dataClass,
410	+	ExtraData data) {
411	+	try {
412	+	TestSuite suite = new TestSuite();
413	+	Constructor c =
414	+	testClass.getDeclaredConstructor(dataClass, String.class);
415	+	for (String methodName : testMethodNames(testClass))
416	+	suite.addTest((Test) c.newInstance(data, methodName));
417	+	return suite;
418	+	} catch (Exception e) {
419	+	throw new Error(e);
420	+	}
421	+	}
422	+
423	+	/**
424	+	* Returns junit-style testSuite for the jdk8 extension of the
425	+	* given test class, but parameterized by passing extra data to
426	+	* each test.  Uses reflection to allow compilation in jdk7.
427	+	*/
428	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
429	+	(Class<? extends JSR166TestCase> testClass,
430	+	Class<ExtraData> dataClass,
431	+	ExtraData data) {
432	+	if (atLeastJava8()) {
433	+	String name = testClass.getName();
434	+	String name8 = name.replaceAll("Test$", "8Test");
435	+	if (name.equals(name8)) throw new Error(name);
436	+	try {
437	+	return (Test)
438	+	Class.forName(name8)
439	+	.getMethod("testSuite", new Class[] { dataClass })
440	+	.invoke(null, data);
441	+	} catch (Exception e) {
442	+	throw new Error(e);
443	+	}
444	+	} else {
445	+	return new TestSuite();
446	+	}
447	+
448	+	}
449	+
450	+	// Delays for timing-dependent tests, in milliseconds.
451
452		public static long SHORT_DELAY_MS;
453		public static long SMALL_DELAY_MS;
454		public static long MEDIUM_DELAY_MS;
455		public static long LONG_DELAY_MS;
456
172	–
457		/**
458	<	* Return the shortest timed delay. This could
458	>	* Returns the shortest timed delay. This could
459		* be reimplemented to use for example a Property.
460	<	*/
460	>	*/
461		protected long getShortDelay() {
462		return 50;
463		}
464
181	–
465		/**
466	<	* Set delays as multiples of SHORT_DELAY.
466	>	* Sets delays as multiples of SHORT_DELAY.
467		*/
468	<	protected  void setDelays() {
468	>	protected void setDelays() {
469		SHORT_DELAY_MS = getShortDelay();
470	<	SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
470	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
471		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
472	<	LONG_DELAY_MS = SHORT_DELAY_MS * 50;
472	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
473	>	}
474	>
475	>	/**
476	>	* Returns a timeout in milliseconds to be used in tests that
477	>	* verify that operations block or time out.
478	>	*/
479	>	long timeoutMillis() {
480	>	return SHORT_DELAY_MS / 4;
481		}
482
483		/**
484	<	* Flag set true if any threadAssert methods fail
484	>	* Returns a new Date instance representing a time delayMillis
485	>	* milliseconds in the future.
486		*/
487	<	volatile boolean threadFailed;
487	>	Date delayedDate(long delayMillis) {
488	>	return new Date(System.currentTimeMillis() + delayMillis);
489	>	}
490	>
491	>	/**
492	>	* The first exception encountered if any threadAssertXXX method fails.
493	>	*/
494	>	private final AtomicReference<Throwable> threadFailure
495	>	= new AtomicReference<Throwable>(null);
496
497		/**
498	<	* Initialize test to indicate that no thread assertions have failed
498	>	* Records an exception so that it can be rethrown later in the test
499	>	* harness thread, triggering a test case failure.  Only the first
500	>	* failure is recorded; subsequent calls to this method from within
501	>	* the same test have no effect.
502		*/
503	<	public void setUp() {
503	>	public void threadRecordFailure(Throwable t) {
504	>	threadFailure.compareAndSet(null, t);
505	>	}
506	>
507	>	public void setUp() {
508		setDelays();
202	–	threadFailed = false;
509		}
510
511		/**
512	<	* Trigger test case failure if any thread assertions have failed
512	>	* Extra checks that get done for all test cases.
513	>	*
514	>	* Triggers test case failure if any thread assertions have failed,
515	>	* by rethrowing, in the test harness thread, any exception recorded
516	>	* earlier by threadRecordFailure.
517	>	*
518	>	* Triggers test case failure if interrupt status is set in the main thread.
519	>	*/
520	>	public void tearDown() throws Exception {
521	>	Throwable t = threadFailure.getAndSet(null);
522	>	if (t != null) {
523	>	if (t instanceof Error)
524	>	throw (Error) t;
525	>	else if (t instanceof RuntimeException)
526	>	throw (RuntimeException) t;
527	>	else if (t instanceof Exception)
528	>	throw (Exception) t;
529	>	else {
530	>	AssertionFailedError afe =
531	>	new AssertionFailedError(t.toString());
532	>	afe.initCause(t);
533	>	throw afe;
534	>	}
535	>	}
536	>
537	>	if (Thread.interrupted())
538	>	throw new AssertionFailedError("interrupt status set in main thread");
539	>
540	>	checkForkJoinPoolThreadLeaks();
541	>	}
542	>
543	>	/**
544	>	* Finds missing try { ... } finally { joinPool(e); }
545		*/
546	<	public void tearDown() {
547	<	assertFalse(threadFailed);
546	>	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
547	>	Thread[] survivors = new Thread[5];
548	>	int count = Thread.enumerate(survivors);
549	>	for (int i = 0; i < count; i++) {
550	>	Thread thread = survivors[i];
551	>	String name = thread.getName();
552	>	if (name.startsWith("ForkJoinPool-")) {
553	>	// give thread some time to terminate
554	>	thread.join(LONG_DELAY_MS);
555	>	if (!thread.isAlive()) continue;
556	>	throw new AssertionFailedError
557	>	(String.format("Found leaked ForkJoinPool thread test=%s thread=%s%n",
558	>	toString(), name));
559	>	}
560	>	}
561		}
562
563		/**
564	<	* Fail, also setting status to indicate current testcase should fail
565	<	*/
564	>	* Just like fail(reason), but additionally recording (using
565	>	* threadRecordFailure) any AssertionFailedError thrown, so that
566	>	* the current testcase will fail.
567	>	*/
568		public void threadFail(String reason) {
569	<	threadFailed = true;
570	<	fail(reason);
569	>	try {
570	>	fail(reason);
571	>	} catch (AssertionFailedError t) {
572	>	threadRecordFailure(t);
573	>	fail(reason);
574	>	}
575		}
576
577		/**
578	<	* If expression not true, set status to indicate current testcase
579	<	* should fail
580	<	*/
578	>	* Just like assertTrue(b), but additionally recording (using
579	>	* threadRecordFailure) any AssertionFailedError thrown, so that
580	>	* the current testcase will fail.
581	>	*/
582		public void threadAssertTrue(boolean b) {
583	<	if (!b) {
226	<	threadFailed = true;
583	>	try {
584		assertTrue(b);
585	+	} catch (AssertionFailedError t) {
586	+	threadRecordFailure(t);
587	+	throw t;
588		}
589		}
590
591		/**
592	<	* If expression not false, set status to indicate current testcase
593	<	* should fail
594	<	*/
592	>	* Just like assertFalse(b), but additionally recording (using
593	>	* threadRecordFailure) any AssertionFailedError thrown, so that
594	>	* the current testcase will fail.
595	>	*/
596		public void threadAssertFalse(boolean b) {
597	<	if (b) {
237	<	threadFailed = true;
597	>	try {
598		assertFalse(b);
599	+	} catch (AssertionFailedError t) {
600	+	threadRecordFailure(t);
601	+	throw t;
602		}
603		}
604
605		/**
606	<	* If argument not null, set status to indicate current testcase
607	<	* should fail
608	<	*/
606	>	* Just like assertNull(x), but additionally recording (using
607	>	* threadRecordFailure) any AssertionFailedError thrown, so that
608	>	* the current testcase will fail.
609	>	*/
610		public void threadAssertNull(Object x) {
611	<	if (x != null) {
248	<	threadFailed = true;
611	>	try {
612		assertNull(x);
613	+	} catch (AssertionFailedError t) {
614	+	threadRecordFailure(t);
615	+	throw t;
616		}
617		}
618
619		/**
620	<	* If arguments not equal, set status to indicate current testcase
621	<	* should fail
622	<	*/
620	>	* Just like assertEquals(x, y), but additionally recording (using
621	>	* threadRecordFailure) any AssertionFailedError thrown, so that
622	>	* the current testcase will fail.
623	>	*/
624		public void threadAssertEquals(long x, long y) {
625	<	if (x != y) {
259	<	threadFailed = true;
625	>	try {
626		assertEquals(x, y);
627	+	} catch (AssertionFailedError t) {
628	+	threadRecordFailure(t);
629	+	throw t;
630		}
631		}
632
633		/**
634	<	* If arguments not equal, set status to indicate current testcase
635	<	* should fail
636	<	*/
634	>	* Just like assertEquals(x, y), but additionally recording (using
635	>	* threadRecordFailure) any AssertionFailedError thrown, so that
636	>	* the current testcase will fail.
637	>	*/
638		public void threadAssertEquals(Object x, Object y) {
639	<	if (x != y && (x == null || !x.equals(y))) {
270	<	threadFailed = true;
639	>	try {
640		assertEquals(x, y);
641	+	} catch (AssertionFailedError fail) {
642	+	threadRecordFailure(fail);
643	+	throw fail;
644	+	} catch (Throwable fail) {
645	+	threadUnexpectedException(fail);
646	+	}
647	+	}
648	+
649	+	/**
650	+	* Just like assertSame(x, y), but additionally recording (using
651	+	* threadRecordFailure) any AssertionFailedError thrown, so that
652	+	* the current testcase will fail.
653	+	*/
654	+	public void threadAssertSame(Object x, Object y) {
655	+	try {
656	+	assertSame(x, y);
657	+	} catch (AssertionFailedError fail) {
658	+	threadRecordFailure(fail);
659	+	throw fail;
660		}
661		}
662
663		/**
664	<	* threadFail with message "should throw exception"
665	<	*/
664	>	* Calls threadFail with message "should throw exception".
665	>	*/
666		public void threadShouldThrow() {
667	<	threadFailed = true;
668	<	fail("should throw exception");
667	>	threadFail("should throw exception");
668	>	}
669	>
670	>	/**
671	>	* Calls threadFail with message "should throw" + exceptionName.
672	>	*/
673	>	public void threadShouldThrow(String exceptionName) {
674	>	threadFail("should throw " + exceptionName);
675		}
676
677		/**
678	<	* threadFail with message "Unexpected exception"
678	>	* Records the given exception using {@link #threadRecordFailure},
679	>	* then rethrows the exception, wrapping it in an
680	>	* AssertionFailedError if necessary.
681		*/
682	<	public void threadUnexpectedException() {
683	<	threadFailed = true;
684	<	fail("Unexpected exception");
682	>	public void threadUnexpectedException(Throwable t) {
683	>	threadRecordFailure(t);
684	>	t.printStackTrace();
685	>	if (t instanceof RuntimeException)
686	>	throw (RuntimeException) t;
687	>	else if (t instanceof Error)
688	>	throw (Error) t;
689	>	else {
690	>	AssertionFailedError afe =
691	>	new AssertionFailedError("unexpected exception: " + t);
692	>	afe.initCause(t);
693	>	throw afe;
694	>	}
695		}
696
697	+	/**
698	+	* Delays, via Thread.sleep, for the given millisecond delay, but
699	+	* if the sleep is shorter than specified, may re-sleep or yield
700	+	* until time elapses.
701	+	*/
702	+	static void delay(long millis) throws InterruptedException {
703	+	long startTime = System.nanoTime();
704	+	long ns = millis * 1000 * 1000;
705	+	for (;;) {
706	+	if (millis > 0L)
707	+	Thread.sleep(millis);
708	+	else // too short to sleep
709	+	Thread.yield();
710	+	long d = ns - (System.nanoTime() - startTime);
711	+	if (d > 0L)
712	+	millis = d / (1000 * 1000);
713	+	else
714	+	break;
715	+	}
716	+	}
717
718		/**
719	<	* Wait out termination of a thread pool or fail doing so
719	>	* Waits out termination of a thread pool or fails doing so.
720		*/
721	<	public void joinPool(ExecutorService exec) {
721	>	void joinPool(ExecutorService exec) {
722		try {
723		exec.shutdown();
724	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
725	<	} catch(SecurityException ok) {
724	>	if (!exec.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS))
725	>	fail("ExecutorService " + exec +
726	>	" did not terminate in a timely manner");
727	>	} catch (SecurityException ok) {
728		// Allowed in case test doesn't have privs
729	<	} catch(InterruptedException ie) {
730	<	fail("Unexpected exception");
729	>	} catch (InterruptedException fail) {
730	>	fail("Unexpected InterruptedException");
731		}
732		}
733
734	+	/**
735	+	* A debugging tool to print all stack traces, as jstack does.
736	+	*/
737	+	static void printAllStackTraces() {
738	+	for (ThreadInfo info :
739	+	ManagementFactory.getThreadMXBean()
740	+	.dumpAllThreads(true, true))
741	+	System.err.print(info);
742	+	}
743	+
744	+	/**
745	+	* Checks that thread does not terminate within the default
746	+	* millisecond delay of {@code timeoutMillis()}.
747	+	*/
748	+	void assertThreadStaysAlive(Thread thread) {
749	+	assertThreadStaysAlive(thread, timeoutMillis());
750	+	}
751
752		/**
753	<	* fail with message "should throw exception"
754	<	*/
753	>	* Checks that thread does not terminate within the given millisecond delay.
754	>	*/
755	>	void assertThreadStaysAlive(Thread thread, long millis) {
756	>	try {
757	>	// No need to optimize the failing case via Thread.join.
758	>	delay(millis);
759	>	assertTrue(thread.isAlive());
760	>	} catch (InterruptedException fail) {
761	>	fail("Unexpected InterruptedException");
762	>	}
763	>	}
764	>
765	>	/**
766	>	* Checks that the threads do not terminate within the default
767	>	* millisecond delay of {@code timeoutMillis()}.
768	>	*/
769	>	void assertThreadsStayAlive(Thread... threads) {
770	>	assertThreadsStayAlive(timeoutMillis(), threads);
771	>	}
772	>
773	>	/**
774	>	* Checks that the threads do not terminate within the given millisecond delay.
775	>	*/
776	>	void assertThreadsStayAlive(long millis, Thread... threads) {
777	>	try {
778	>	// No need to optimize the failing case via Thread.join.
779	>	delay(millis);
780	>	for (Thread thread : threads)
781	>	assertTrue(thread.isAlive());
782	>	} catch (InterruptedException fail) {
783	>	fail("Unexpected InterruptedException");
784	>	}
785	>	}
786	>
787	>	/**
788	>	* Checks that future.get times out, with the default timeout of
789	>	* {@code timeoutMillis()}.
790	>	*/
791	>	void assertFutureTimesOut(Future future) {
792	>	assertFutureTimesOut(future, timeoutMillis());
793	>	}
794	>
795	>	/**
796	>	* Checks that future.get times out, with the given millisecond timeout.
797	>	*/
798	>	void assertFutureTimesOut(Future future, long timeoutMillis) {
799	>	long startTime = System.nanoTime();
800	>	try {
801	>	future.get(timeoutMillis, MILLISECONDS);
802	>	shouldThrow();
803	>	} catch (TimeoutException success) {
804	>	} catch (Exception fail) {
805	>	threadUnexpectedException(fail);
806	>	} finally { future.cancel(true); }
807	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
808	>	}
809	>
810	>	/**
811	>	* Fails with message "should throw exception".
812	>	*/
813		public void shouldThrow() {
814		fail("Should throw exception");
815		}
816
817		/**
818	<	* fail with message "Unexpected exception"
818	>	* Fails with message "should throw " + exceptionName.
819		*/
820	<	public void unexpectedException() {
821	<	fail("Unexpected exception");
820	>	public void shouldThrow(String exceptionName) {
821	>	fail("Should throw " + exceptionName);
822		}
823
321	–
824		/**
825		* The number of elements to place in collections, arrays, etc.
826		*/
827	<	static final int SIZE = 20;
827	>	public static final int SIZE = 20;
828
829		// Some convenient Integer constants
830
831	<	static final Integer zero = new Integer(0);
832	<	static final Integer one = new Integer(1);
833	<	static final Integer two = new Integer(2);
834	<	static final Integer three  = new Integer(3);
835	<	static final Integer four  = new Integer(4);
836	<	static final Integer five  = new Integer(5);
837	<	static final Integer six = new Integer(6);
838	<	static final Integer seven = new Integer(7);
839	<	static final Integer eight = new Integer(8);
840	<	static final Integer nine = new Integer(9);
841	<	static final Integer m1  = new Integer(-1);
842	<	static final Integer m2  = new Integer(-2);
843	<	static final Integer m3  = new Integer(-3);
844	<	static final Integer m4 = new Integer(-4);
845	<	static final Integer m5 = new Integer(-5);
846	<	static final Integer m10 = new Integer(-10);
831	>	public static final Integer zero  = new Integer(0);
832	>	public static final Integer one   = new Integer(1);
833	>	public static final Integer two   = new Integer(2);
834	>	public static final Integer three = new Integer(3);
835	>	public static final Integer four  = new Integer(4);
836	>	public static final Integer five  = new Integer(5);
837	>	public static final Integer six   = new Integer(6);
838	>	public static final Integer seven = new Integer(7);
839	>	public static final Integer eight = new Integer(8);
840	>	public static final Integer nine  = new Integer(9);
841	>	public static final Integer m1  = new Integer(-1);
842	>	public static final Integer m2  = new Integer(-2);
843	>	public static final Integer m3  = new Integer(-3);
844	>	public static final Integer m4  = new Integer(-4);
845	>	public static final Integer m5  = new Integer(-5);
846	>	public static final Integer m6  = new Integer(-6);
847	>	public static final Integer m10 = new Integer(-10);
848	>
849	>	/**
850	>	* Runs Runnable r with a security policy that permits precisely
851	>	* the specified permissions.  If there is no current security
852	>	* manager, the runnable is run twice, both with and without a
853	>	* security manager.  We require that any security manager permit
854	>	* getPolicy/setPolicy.
855	>	*/
856	>	public void runWithPermissions(Runnable r, Permission... permissions) {
857	>	SecurityManager sm = System.getSecurityManager();
858	>	if (sm == null) {
859	>	r.run();
860	>	}
861	>	runWithSecurityManagerWithPermissions(r, permissions);
862	>	}
863	>
864	>	/**
865	>	* Runs Runnable r with a security policy that permits precisely
866	>	* the specified permissions.  If there is no current security
867	>	* manager, a temporary one is set for the duration of the
868	>	* Runnable.  We require that any security manager permit
869	>	* getPolicy/setPolicy.
870	>	*/
871	>	public void runWithSecurityManagerWithPermissions(Runnable r,
872	>	Permission... permissions) {
873	>	SecurityManager sm = System.getSecurityManager();
874	>	if (sm == null) {
875	>	Policy savedPolicy = Policy.getPolicy();
876	>	try {
877	>	Policy.setPolicy(permissivePolicy());
878	>	System.setSecurityManager(new SecurityManager());
879	>	runWithSecurityManagerWithPermissions(r, permissions);
880	>	} finally {
881	>	System.setSecurityManager(null);
882	>	Policy.setPolicy(savedPolicy);
883	>	}
884	>	} else {
885	>	Policy savedPolicy = Policy.getPolicy();
886	>	AdjustablePolicy policy = new AdjustablePolicy(permissions);
887	>	Policy.setPolicy(policy);
888	>
889	>	try {
890	>	r.run();
891	>	} finally {
892	>	policy.addPermission(new SecurityPermission("setPolicy"));
893	>	Policy.setPolicy(savedPolicy);
894	>	}
895	>	}
896	>	}
897
898	+	/**
899	+	* Runs a runnable without any permissions.
900	+	*/
901	+	public void runWithoutPermissions(Runnable r) {
902	+	runWithPermissions(r);
903	+	}
904
905		/**
906		* A security policy where new permissions can be dynamically added
907		* or all cleared.
908		*/
909	<	static class AdjustablePolicy extends java.security.Policy {
909	>	public static class AdjustablePolicy extends java.security.Policy {
910		Permissions perms = new Permissions();
911	<	AdjustablePolicy() { }
911	>	AdjustablePolicy(Permission... permissions) {
912	>	for (Permission permission : permissions)
913	>	perms.add(permission);
914	>	}
915		void addPermission(Permission perm) { perms.add(perm); }
916		void clearPermissions() { perms = new Permissions(); }
917	<	public PermissionCollection getPermissions(CodeSource cs) {
918	<	return perms;
919	<	}
920	<	public PermissionCollection getPermissions(ProtectionDomain pd) {
921	<	return perms;
922	<	}
923	<	public boolean implies(ProtectionDomain pd, Permission p) {
924	<	return perms.implies(p);
925	<	}
926	<	public void refresh() {}
917	>	public PermissionCollection getPermissions(CodeSource cs) {
918	>	return perms;
919	>	}
920	>	public PermissionCollection getPermissions(ProtectionDomain pd) {
921	>	return perms;
922	>	}
923	>	public boolean implies(ProtectionDomain pd, Permission p) {
924	>	return perms.implies(p);
925	>	}
926	>	public void refresh() {}
927	>	public String toString() {
928	>	List<Permission> ps = new ArrayList<Permission>();
929	>	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
930	>	ps.add(e.nextElement());
931	>	return "AdjustablePolicy with permissions " + ps;
932	>	}
933	>	}
934	>
935	>	/**
936	>	* Returns a policy containing all the permissions we ever need.
937	>	*/
938	>	public static Policy permissivePolicy() {
939	>	return new AdjustablePolicy
940	>	// Permissions j.u.c. needs directly
941	>	(new RuntimePermission("modifyThread"),
942	>	new RuntimePermission("getClassLoader"),
943	>	new RuntimePermission("setContextClassLoader"),
944	>	// Permissions needed to change permissions!
945	>	new SecurityPermission("getPolicy"),
946	>	new SecurityPermission("setPolicy"),
947	>	new RuntimePermission("setSecurityManager"),
948	>	// Permissions needed by the junit test harness
949	>	new RuntimePermission("accessDeclaredMembers"),
950	>	new PropertyPermission("*", "read"),
951	>	new java.io.FilePermission("<<ALL FILES>>", "read"));
952		}
953
954	+	/**
955	+	* Sleeps until the given time has elapsed.
956	+	* Throws AssertionFailedError if interrupted.
957	+	*/
958	+	void sleep(long millis) {
959	+	try {
960	+	delay(millis);
961	+	} catch (InterruptedException fail) {
962	+	AssertionFailedError afe =
963	+	new AssertionFailedError("Unexpected InterruptedException");
964	+	afe.initCause(fail);
965	+	throw afe;
966	+	}
967	+	}
968
969	<	// Some convenient Runnable classes
969	>	/**
970	>	* Spin-waits up to the specified number of milliseconds for the given
971	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
972	>	*/
973	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
974	>	long startTime = System.nanoTime();
975	>	for (;;) {
976	>	Thread.State s = thread.getState();
977	>	if (s == Thread.State.BLOCKED ||
978	>	s == Thread.State.WAITING ||
979	>	s == Thread.State.TIMED_WAITING)
980	>	return;
981	>	else if (s == Thread.State.TERMINATED)
982	>	fail("Unexpected thread termination");
983	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
984	>	threadAssertTrue(thread.isAlive());
985	>	return;
986	>	}
987	>	Thread.yield();
988	>	}
989	>	}
990
991	<	static class NoOpRunnable implements Runnable {
992	<	public void run() {}
991	>	/**
992	>	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
993	>	* state: BLOCKED, WAITING, or TIMED_WAITING.
994	>	*/
995	>	void waitForThreadToEnterWaitState(Thread thread) {
996	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
997		}
998
999	<	static class NoOpCallable implements Callable {
1000	<	public Object call() { return Boolean.TRUE; }
999	>	/**
1000	>	* Returns the number of milliseconds since time given by
1001	>	* startNanoTime, which must have been previously returned from a
1002	>	* call to {@link System#nanoTime()}.
1003	>	*/
1004	>	static long millisElapsedSince(long startNanoTime) {
1005	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1006		}
1007
1008	<	static final String TEST_STRING = "a test string";
1008	>	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1009	>	//         long startTime = System.nanoTime();
1010	>	//         try {
1011	>	//             r.run();
1012	>	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1013	>	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1014	>	//             throw new AssertionFailedError("did not return promptly");
1015	>	//     }
1016	>
1017	>	//     void assertTerminatesPromptly(Runnable r) {
1018	>	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1019	>	//     }
1020
1021	<	static class StringTask implements Callable<String> {
1022	<	public String call() { return TEST_STRING; }
1021	>	/**
1022	>	* Checks that timed f.get() returns the expected value, and does not
1023	>	* wait for the timeout to elapse before returning.
1024	>	*/
1025	>	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1026	>	long startTime = System.nanoTime();
1027	>	try {
1028	>	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1029	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1030	>	if (millisElapsedSince(startTime) > timeoutMillis/2)
1031	>	throw new AssertionFailedError("timed get did not return promptly");
1032		}
1033
1034	<	static class NPETask implements Callable<String> {
1035	<	public String call() { throw new NullPointerException(); }
1034	>	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1035	>	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1036		}
1037
1038	<	static class CallableOne implements Callable<Integer> {
1039	<	public Integer call() { return one; }
1038	>	/**
1039	>	* Returns a new started daemon Thread running the given runnable.
1040	>	*/
1041	>	Thread newStartedThread(Runnable runnable) {
1042	>	Thread t = new Thread(runnable);
1043	>	t.setDaemon(true);
1044	>	t.start();
1045	>	return t;
1046		}
1047
1048	<	class ShortRunnable implements Runnable {
1049	<	public void run() {
1050	<	try {
1051	<	Thread.sleep(SHORT_DELAY_MS);
1052	<	}
1053	<	catch(Exception e) {
1054	<	threadUnexpectedException();
1048	>	/**
1049	>	* Waits for the specified time (in milliseconds) for the thread
1050	>	* to terminate (using {@link Thread#join(long)}), else interrupts
1051	>	* the thread (in the hope that it may terminate later) and fails.
1052	>	*/
1053	>	void awaitTermination(Thread t, long timeoutMillis) {
1054	>	try {
1055	>	t.join(timeoutMillis);
1056	>	} catch (InterruptedException fail) {
1057	>	threadUnexpectedException(fail);
1058	>	} finally {
1059	>	if (t.getState() != Thread.State.TERMINATED) {
1060	>	t.interrupt();
1061	>	fail("Test timed out");
1062		}
1063		}
1064		}
1065
1066	<	class ShortInterruptedRunnable implements Runnable {
1067	<	public void run() {
1066	>	/**
1067	>	* Waits for LONG_DELAY_MS milliseconds for the thread to
1068	>	* terminate (using {@link Thread#join(long)}), else interrupts
1069	>	* the thread (in the hope that it may terminate later) and fails.
1070	>	*/
1071	>	void awaitTermination(Thread t) {
1072	>	awaitTermination(t, LONG_DELAY_MS);
1073	>	}
1074	>
1075	>	// Some convenient Runnable classes
1076	>
1077	>	public abstract class CheckedRunnable implements Runnable {
1078	>	protected abstract void realRun() throws Throwable;
1079	>
1080	>	public final void run() {
1081		try {
1082	<	Thread.sleep(SHORT_DELAY_MS);
1083	<	threadShouldThrow();
1084	<	}
410	<	catch(InterruptedException success) {
1082	>	realRun();
1083	>	} catch (Throwable fail) {
1084	>	threadUnexpectedException(fail);
1085		}
1086		}
1087		}
1088
1089	<	class SmallRunnable implements Runnable {
1090	<	public void run() {
1089	>	public abstract class RunnableShouldThrow implements Runnable {
1090	>	protected abstract void realRun() throws Throwable;
1091	>
1092	>	final Class<?> exceptionClass;
1093	>
1094	>	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
1095	>	this.exceptionClass = exceptionClass;
1096	>	}
1097	>
1098	>	public final void run() {
1099		try {
1100	<	Thread.sleep(SMALL_DELAY_MS);
1101	<	}
1102	<	catch(Exception e) {
1103	<	threadUnexpectedException();
1100	>	realRun();
1101	>	threadShouldThrow(exceptionClass.getSimpleName());
1102	>	} catch (Throwable t) {
1103	>	if (! exceptionClass.isInstance(t))
1104	>	threadUnexpectedException(t);
1105		}
1106		}
1107		}
1108
1109	<	class SmallPossiblyInterruptedRunnable implements Runnable {
1110	<	public void run() {
1109	>	public abstract class ThreadShouldThrow extends Thread {
1110	>	protected abstract void realRun() throws Throwable;
1111	>
1112	>	final Class<?> exceptionClass;
1113	>
1114	>	<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) {
1115	>	this.exceptionClass = exceptionClass;
1116	>	}
1117	>
1118	>	public final void run() {
1119		try {
1120	<	Thread.sleep(SMALL_DELAY_MS);
1121	<	}
1122	<	catch(Exception e) {
1120	>	realRun();
1121	>	threadShouldThrow(exceptionClass.getSimpleName());
1122	>	} catch (Throwable t) {
1123	>	if (! exceptionClass.isInstance(t))
1124	>	threadUnexpectedException(t);
1125		}
1126		}
1127		}
1128
1129	<	class SmallCallable implements Callable {
1130	<	public Object call() {
1129	>	public abstract class CheckedInterruptedRunnable implements Runnable {
1130	>	protected abstract void realRun() throws Throwable;
1131	>
1132	>	public final void run() {
1133		try {
1134	<	Thread.sleep(SMALL_DELAY_MS);
1134	>	realRun();
1135	>	threadShouldThrow("InterruptedException");
1136	>	} catch (InterruptedException success) {
1137	>	threadAssertFalse(Thread.interrupted());
1138	>	} catch (Throwable fail) {
1139	>	threadUnexpectedException(fail);
1140		}
441	–	catch(Exception e) {
442	–	threadUnexpectedException();
443	–	}
444	–	return Boolean.TRUE;
1141		}
1142		}
1143
1144	<	class SmallInterruptedRunnable implements Runnable {
1145	<	public void run() {
1144	>	public abstract class CheckedCallable<T> implements Callable<T> {
1145	>	protected abstract T realCall() throws Throwable;
1146	>
1147	>	public final T call() {
1148		try {
1149	<	Thread.sleep(SMALL_DELAY_MS);
1150	<	threadShouldThrow();
1151	<	}
1152	<	catch(InterruptedException success) {
1149	>	return realCall();
1150	>	} catch (Throwable fail) {
1151	>	threadUnexpectedException(fail);
1152	>	return null;
1153		}
1154		}
1155		}
1156
1157	+	public abstract class CheckedInterruptedCallable<T>
1158	+	implements Callable<T> {
1159	+	protected abstract T realCall() throws Throwable;
1160
1161	<	class MediumRunnable implements Runnable {
461	<	public void run() {
1161	>	public final T call() {
1162		try {
1163	<	Thread.sleep(MEDIUM_DELAY_MS);
1164	<	}
1165	<	catch(Exception e) {
1166	<	threadUnexpectedException();
1163	>	T result = realCall();
1164	>	threadShouldThrow("InterruptedException");
1165	>	return result;
1166	>	} catch (InterruptedException success) {
1167	>	threadAssertFalse(Thread.interrupted());
1168	>	} catch (Throwable fail) {
1169	>	threadUnexpectedException(fail);
1170		}
1171	+	return null;
1172		}
1173		}
1174
1175	<	class MediumInterruptedRunnable implements Runnable {
1176	<	public void run() {
1175	>	public static class NoOpRunnable implements Runnable {
1176	>	public void run() {}
1177	>	}
1178	>
1179	>	public static class NoOpCallable implements Callable {
1180	>	public Object call() { return Boolean.TRUE; }
1181	>	}
1182	>
1183	>	public static final String TEST_STRING = "a test string";
1184	>
1185	>	public static class StringTask implements Callable<String> {
1186	>	public String call() { return TEST_STRING; }
1187	>	}
1188	>
1189	>	public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1190	>	return new CheckedCallable<String>() {
1191	>	protected String realCall() {
1192	>	try {
1193	>	latch.await();
1194	>	} catch (InterruptedException quittingTime) {}
1195	>	return TEST_STRING;
1196	>	}};
1197	>	}
1198	>
1199	>	public Runnable awaiter(final CountDownLatch latch) {
1200	>	return new CheckedRunnable() {
1201	>	public void realRun() throws InterruptedException {
1202	>	await(latch);
1203	>	}};
1204	>	}
1205	>
1206	>	public void await(CountDownLatch latch) {
1207	>	try {
1208	>	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1209	>	} catch (Throwable fail) {
1210	>	threadUnexpectedException(fail);
1211	>	}
1212	>	}
1213	>
1214	>	public void await(Semaphore semaphore) {
1215	>	try {
1216	>	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1217	>	} catch (Throwable fail) {
1218	>	threadUnexpectedException(fail);
1219	>	}
1220	>	}
1221	>
1222	>	//     /**
1223	>	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1224	>	//      */
1225	>	//     public void await(AtomicBoolean flag) {
1226	>	//         await(flag, LONG_DELAY_MS);
1227	>	//     }
1228	>
1229	>	//     /**
1230	>	//      * Spin-waits up to the specified timeout until flag becomes true.
1231	>	//      */
1232	>	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1233	>	//         long startTime = System.nanoTime();
1234	>	//         while (!flag.get()) {
1235	>	//             if (millisElapsedSince(startTime) > timeoutMillis)
1236	>	//                 throw new AssertionFailedError("timed out");
1237	>	//             Thread.yield();
1238	>	//         }
1239	>	//     }
1240	>
1241	>	public static class NPETask implements Callable<String> {
1242	>	public String call() { throw new NullPointerException(); }
1243	>	}
1244	>
1245	>	public static class CallableOne implements Callable<Integer> {
1246	>	public Integer call() { return one; }
1247	>	}
1248	>
1249	>	public class ShortRunnable extends CheckedRunnable {
1250	>	protected void realRun() throws Throwable {
1251	>	delay(SHORT_DELAY_MS);
1252	>	}
1253	>	}
1254	>
1255	>	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1256	>	protected void realRun() throws InterruptedException {
1257	>	delay(SHORT_DELAY_MS);
1258	>	}
1259	>	}
1260	>
1261	>	public class SmallRunnable extends CheckedRunnable {
1262	>	protected void realRun() throws Throwable {
1263	>	delay(SMALL_DELAY_MS);
1264	>	}
1265	>	}
1266	>
1267	>	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1268	>	protected void realRun() {
1269		try {
1270	<	Thread.sleep(MEDIUM_DELAY_MS);
1271	<	threadShouldThrow();
476	<	}
477	<	catch(InterruptedException success) {
478	<	}
1270	>	delay(SMALL_DELAY_MS);
1271	>	} catch (InterruptedException ok) {}
1272		}
1273		}
1274
1275	<	class MediumPossiblyInterruptedRunnable implements Runnable {
1276	<	public void run() {
1275	>	public class SmallCallable extends CheckedCallable {
1276	>	protected Object realCall() throws InterruptedException {
1277	>	delay(SMALL_DELAY_MS);
1278	>	return Boolean.TRUE;
1279	>	}
1280	>	}
1281	>
1282	>	public class MediumRunnable extends CheckedRunnable {
1283	>	protected void realRun() throws Throwable {
1284	>	delay(MEDIUM_DELAY_MS);
1285	>	}
1286	>	}
1287	>
1288	>	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1289	>	protected void realRun() throws InterruptedException {
1290	>	delay(MEDIUM_DELAY_MS);
1291	>	}
1292	>	}
1293	>
1294	>	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1295	>	return new CheckedRunnable() {
1296	>	protected void realRun() {
1297	>	try {
1298	>	delay(timeoutMillis);
1299	>	} catch (InterruptedException ok) {}
1300	>	}};
1301	>	}
1302	>
1303	>	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1304	>	protected void realRun() {
1305		try {
1306	<	Thread.sleep(MEDIUM_DELAY_MS);
1307	<	}
487	<	catch(InterruptedException success) {
488	<	}
1306	>	delay(MEDIUM_DELAY_MS);
1307	>	} catch (InterruptedException ok) {}
1308		}
1309		}
1310
1311	<	class LongPossiblyInterruptedRunnable implements Runnable {
1312	<	public void run() {
1311	>	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1312	>	protected void realRun() {
1313		try {
1314	<	Thread.sleep(LONG_DELAY_MS);
1315	<	}
497	<	catch(InterruptedException success) {
498	<	}
1314	>	delay(LONG_DELAY_MS);
1315	>	} catch (InterruptedException ok) {}
1316		}
1317		}
1318
1319		/**
1320		* For use as ThreadFactory in constructors
1321		*/
1322	<	static class SimpleThreadFactory implements ThreadFactory{
1323	<	public Thread newThread(Runnable r){
1322	>	public static class SimpleThreadFactory implements ThreadFactory {
1323	>	public Thread newThread(Runnable r) {
1324		return new Thread(r);
1325	<	}
1325	>	}
1326		}
1327
1328	<	static class TrackedShortRunnable implements Runnable {
1329	<	volatile boolean done = false;
1328	>	public interface TrackedRunnable extends Runnable {
1329	>	boolean isDone();
1330	>	}
1331	>
1332	>	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1333	>	return new TrackedRunnable() {
1334	>	private volatile boolean done = false;
1335	>	public boolean isDone() { return done; }
1336	>	public void run() {
1337	>	try {
1338	>	delay(timeoutMillis);
1339	>	done = true;
1340	>	} catch (InterruptedException ok) {}
1341	>	}
1342	>	};
1343	>	}
1344	>
1345	>	public static class TrackedShortRunnable implements Runnable {
1346	>	public volatile boolean done = false;
1347		public void run() {
1348		try {
1349	<	Thread.sleep(SMALL_DELAY_MS);
1349	>	delay(SHORT_DELAY_MS);
1350		done = true;
1351	<	} catch(Exception e){
518	<	}
1351	>	} catch (InterruptedException ok) {}
1352		}
1353		}
1354
1355	<	static class TrackedMediumRunnable implements Runnable {
1356	<	volatile boolean done = false;
1355	>	public static class TrackedSmallRunnable implements Runnable {
1356	>	public volatile boolean done = false;
1357		public void run() {
1358		try {
1359	<	Thread.sleep(MEDIUM_DELAY_MS);
1359	>	delay(SMALL_DELAY_MS);
1360		done = true;
1361	<	} catch(Exception e){
529	<	}
1361	>	} catch (InterruptedException ok) {}
1362		}
1363		}
1364
1365	<	static class TrackedLongRunnable implements Runnable {
1366	<	volatile boolean done = false;
1365	>	public static class TrackedMediumRunnable implements Runnable {
1366	>	public volatile boolean done = false;
1367		public void run() {
1368		try {
1369	<	Thread.sleep(LONG_DELAY_MS);
1369	>	delay(MEDIUM_DELAY_MS);
1370		done = true;
1371	<	} catch(Exception e){
540	<	}
1371	>	} catch (InterruptedException ok) {}
1372		}
1373		}
1374
1375	<	static class TrackedNoOpRunnable implements Runnable {
1376	<	volatile boolean done = false;
1375	>	public static class TrackedLongRunnable implements Runnable {
1376	>	public volatile boolean done = false;
1377	>	public void run() {
1378	>	try {
1379	>	delay(LONG_DELAY_MS);
1380	>	done = true;
1381	>	} catch (InterruptedException ok) {}
1382	>	}
1383	>	}
1384	>
1385	>	public static class TrackedNoOpRunnable implements Runnable {
1386	>	public volatile boolean done = false;
1387		public void run() {
1388		done = true;
1389		}
1390		}
1391
1392	<	static class TrackedCallable implements Callable {
1393	<	volatile boolean done = false;
1392	>	public static class TrackedCallable implements Callable {
1393	>	public volatile boolean done = false;
1394		public Object call() {
1395		try {
1396	<	Thread.sleep(SMALL_DELAY_MS);
1396	>	delay(SMALL_DELAY_MS);
1397		done = true;
1398	<	} catch(Exception e){
558	<	}
1398	>	} catch (InterruptedException ok) {}
1399		return Boolean.TRUE;
1400		}
1401		}
1402
1403	+	/**
1404	+	* Analog of CheckedRunnable for RecursiveAction
1405	+	*/
1406	+	public abstract class CheckedRecursiveAction extends RecursiveAction {
1407	+	protected abstract void realCompute() throws Throwable;
1408	+
1409	+	@Override protected final void compute() {
1410	+	try {
1411	+	realCompute();
1412	+	} catch (Throwable fail) {
1413	+	threadUnexpectedException(fail);
1414	+	}
1415	+	}
1416	+	}
1417	+
1418	+	/**
1419	+	* Analog of CheckedCallable for RecursiveTask
1420	+	*/
1421	+	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1422	+	protected abstract T realCompute() throws Throwable;
1423	+
1424	+	@Override protected final T compute() {
1425	+	try {
1426	+	return realCompute();
1427	+	} catch (Throwable fail) {
1428	+	threadUnexpectedException(fail);
1429	+	return null;
1430	+	}
1431	+	}
1432	+	}
1433
1434		/**
1435		* For use as RejectedExecutionHandler in constructors
1436		*/
1437	<	static class NoOpREHandler implements RejectedExecutionHandler{
1438	<	public void rejectedExecution(Runnable r, ThreadPoolExecutor executor){}
1437	>	public static class NoOpREHandler implements RejectedExecutionHandler {
1438	>	public void rejectedExecution(Runnable r,
1439	>	ThreadPoolExecutor executor) {}
1440	>	}
1441	>
1442	>	/**
1443	>	* A CyclicBarrier that uses timed await and fails with
1444	>	* AssertionFailedErrors instead of throwing checked exceptions.
1445	>	*/
1446	>	public class CheckedBarrier extends CyclicBarrier {
1447	>	public CheckedBarrier(int parties) { super(parties); }
1448	>
1449	>	public int await() {
1450	>	try {
1451	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1452	>	} catch (TimeoutException timedOut) {
1453	>	throw new AssertionFailedError("timed out");
1454	>	} catch (Exception fail) {
1455	>	AssertionFailedError afe =
1456	>	new AssertionFailedError("Unexpected exception: " + fail);
1457	>	afe.initCause(fail);
1458	>	throw afe;
1459	>	}
1460	>	}
1461	>	}
1462	>
1463	>	void checkEmpty(BlockingQueue q) {
1464	>	try {
1465	>	assertTrue(q.isEmpty());
1466	>	assertEquals(0, q.size());
1467	>	assertNull(q.peek());
1468	>	assertNull(q.poll());
1469	>	assertNull(q.poll(0, MILLISECONDS));
1470	>	assertEquals(q.toString(), "[]");
1471	>	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1472	>	assertFalse(q.iterator().hasNext());
1473	>	try {
1474	>	q.element();
1475	>	shouldThrow();
1476	>	} catch (NoSuchElementException success) {}
1477	>	try {
1478	>	q.iterator().next();
1479	>	shouldThrow();
1480	>	} catch (NoSuchElementException success) {}
1481	>	try {
1482	>	q.remove();
1483	>	shouldThrow();
1484	>	} catch (NoSuchElementException success) {}
1485	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1486	>	}
1487	>
1488	>	void assertSerialEquals(Object x, Object y) {
1489	>	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1490	>	}
1491	>
1492	>	void assertNotSerialEquals(Object x, Object y) {
1493	>	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1494	>	}
1495	>
1496	>	byte[] serialBytes(Object o) {
1497	>	try {
1498	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1499	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1500	>	oos.writeObject(o);
1501	>	oos.flush();
1502	>	oos.close();
1503	>	return bos.toByteArray();
1504	>	} catch (Throwable fail) {
1505	>	threadUnexpectedException(fail);
1506	>	return new byte[0];
1507	>	}
1508	>	}
1509	>
1510	>	@SuppressWarnings("unchecked")
1511	>	<T> T serialClone(T o) {
1512	>	try {
1513	>	ObjectInputStream ois = new ObjectInputStream
1514	>	(new ByteArrayInputStream(serialBytes(o)));
1515	>	T clone = (T) ois.readObject();
1516	>	assertSame(o.getClass(), clone.getClass());
1517	>	return clone;
1518	>	} catch (Throwable fail) {
1519	>	threadUnexpectedException(fail);
1520	>	return null;
1521	>	}
1522	>	}
1523	>
1524	>	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1525	>	Runnable... throwingActions) {
1526	>	for (Runnable throwingAction : throwingActions) {
1527	>	boolean threw = false;
1528	>	try { throwingAction.run(); }
1529	>	catch (Throwable t) {
1530	>	threw = true;
1531	>	if (!expectedExceptionClass.isInstance(t)) {
1532	>	AssertionFailedError afe =
1533	>	new AssertionFailedError
1534	>	("Expected " + expectedExceptionClass.getName() +
1535	>	", got " + t.getClass().getName());
1536	>	afe.initCause(t);
1537	>	threadUnexpectedException(afe);
1538	>	}
1539	>	}
1540	>	if (!threw)
1541	>	shouldThrow(expectedExceptionClass.getName());
1542	>	}
1543	>	}
1544	>
1545	>	public void assertIteratorExhausted(Iterator<?> it) {
1546	>	try {
1547	>	it.next();
1548	>	shouldThrow();
1549	>	} catch (NoSuchElementException success) {}
1550	>	assertFalse(it.hasNext());
1551		}
570	–
571	–
1552		}

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