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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.15 by dl, Mon Dec 29 19:05:40 2003 UTC vs.
Revision 1.139 by jsr166, Sun Sep 6 21:14:12 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.ExecutionException;
41	>	import java.util.concurrent.Executors;
42	>	import java.util.concurrent.ExecutorService;
43	>	import java.util.concurrent.Future;
44	>	import java.util.concurrent.RecursiveAction;
45	>	import java.util.concurrent.RecursiveTask;
46	>	import java.util.concurrent.RejectedExecutionHandler;
47	>	import java.util.concurrent.Semaphore;
48	>	import java.util.concurrent.ThreadFactory;
49	>	import java.util.concurrent.ThreadPoolExecutor;
50	>	import java.util.concurrent.TimeoutException;
51	>	import java.util.concurrent.atomic.AtomicReference;
52	>	import java.util.regex.Pattern;
53	>
54	>	import junit.framework.AssertionFailedError;
55	>	import junit.framework.Test;
56	>	import junit.framework.TestCase;
57	>	import junit.framework.TestResult;
58	>	import junit.framework.TestSuite;
59
60		/**
61		* Base class for JSR166 Junit TCK tests.  Defines some constants,
62		* utility methods and classes, as well as a simple framework for
63		* helping to make sure that assertions failing in generated threads
64		* cause the associated test that generated them to itself fail (which
65	<	* JUnit doe not otherwise arrange).  The rules for creating such
65	>	* JUnit does not otherwise arrange).  The rules for creating such
66		* tests are:
67		*
68		* <ol>
69		*
70		* <li> All assertions in code running in generated threads must use
71	<	* the forms {@link threadFail} , {@link threadAssertTrue} {@link
72	<	* threadAssertEquals}, or {@link threadAssertNull}, (not
73	<	* <tt>fail</tt>, <tt>assertTrue</tt>, etc.) It is OK (but not
71	>	* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
72	>	* #threadAssertEquals}, or {@link #threadAssertNull}, (not
73	>	* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
74		* particularly recommended) for other code to use these forms too.
75		* Only the most typically used JUnit assertion methods are defined
76		* this way, but enough to live with.</li>
77		*
78	<	* <li> If you override {@link setUp} or {@link tearDown}, make sure
79	<	* to invoke <tt>super.setUp</tt> and <tt>super.tearDown</tt> within
78	>	* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
79	>	* to invoke {@code super.setUp} and {@code super.tearDown} within
80		* them. These methods are used to clear and check for thread
81		* assertion failures.</li>
82		*
83	<	* <li>All delays and timeouts must use one of the constants <tt>
84	<	* SHORT_DELAY_MS</tt>, <tt> SMALL_DELAY_MS</tt>, <tt> MEDIUM_DELAY_MS</tt>,
85	<	* <tt> LONG_DELAY_MS</tt>. The idea here is that a SHORT is always
83	>	* <li>All delays and timeouts must use one of the constants {@code
84	>	* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
85	>	* {@code LONG_DELAY_MS}. The idea here is that a SHORT is always
86		* discriminable from zero time, and always allows enough time for the
87		* small amounts of computation (creating a thread, calling a few
88		* methods, etc) needed to reach a timeout point. Similarly, a SMALL
89		* is always discriminable as larger than SHORT and smaller than
90		* MEDIUM.  And so on. These constants are set to conservative values,
91		* but even so, if there is ever any doubt, they can all be increased
92	<	* in one spot to rerun tests on slower platforms</li>
92	>	* in one spot to rerun tests on slower platforms.</li>
93		*
94		* <li> All threads generated must be joined inside each test case
95	<	* method (or <tt>fail</tt> to do so) before returning from the
96	<	* method. The <tt> joinPool</tt> method can be used to do this when
95	>	* method (or {@code fail} to do so) before returning from the
96	>	* method. The {@code joinPool} method can be used to do this when
97		* using Executors.</li>
98		*
99		* </ol>
100		*
101	<	* <p> <b>Other notes</b>
101	>	* <p><b>Other notes</b>
102		* <ul>
103		*
104		* <li> Usually, there is one testcase method per JSR166 method
#	Line 63 | Line 108 | import java.security.*;
108		* "normal" behaviors differ significantly. And sometimes testcases
109		* cover multiple methods when they cannot be tested in
110		* isolation.</li>
111	<	*
111	>	*
112		* <li> The documentation style for testcases is to provide as javadoc
113		* a simple sentence or two describing the property that the testcase
114		* method purports to test. The javadocs do not say anything about how
#	Line 80 | Line 125 | import java.security.*;
125		* any particular package to simplify things for people integrating
126		* them in TCK test suites.</li>
127		*
128	<	* <li> As a convenience, the <tt>main</tt> of this class (JSR166TestCase)
128	>	* <li> As a convenience, the {@code main} of this class (JSR166TestCase)
129		* runs all JSR166 unit tests.</li>
130		*
131		* </ul>
132		*/
133		public class JSR166TestCase extends TestCase {
134	+	private static final boolean useSecurityManager =
135	+	Boolean.getBoolean("jsr166.useSecurityManager");
136	+
137	+	protected static final boolean expensiveTests =
138	+	Boolean.getBoolean("jsr166.expensiveTests");
139	+
140	+	/**
141	+	* If true, also run tests that are not part of the official tck
142	+	* because they test unspecified implementation details.
143	+	*/
144	+	protected static final boolean testImplementationDetails =
145	+	Boolean.getBoolean("jsr166.testImplementationDetails");
146	+
147	+	/**
148	+	* If true, report on stdout all "slow" tests, that is, ones that
149	+	* take more than profileThreshold milliseconds to execute.
150	+	*/
151	+	private static final boolean profileTests =
152	+	Boolean.getBoolean("jsr166.profileTests");
153	+
154	+	/**
155	+	* The number of milliseconds that tests are permitted for
156	+	* execution without being reported, when profileTests is set.
157	+	*/
158	+	private static final long profileThreshold =
159	+	Long.getLong("jsr166.profileThreshold", 100);
160	+
161	+	/**
162	+	* The number of repetitions per test (for tickling rare bugs).
163	+	*/
164	+	private static final int runsPerTest =
165	+	Integer.getInteger("jsr166.runsPerTest", 1);
166	+
167	+	/**
168	+	* The number of repetitions of the test suite (for finding leaks?).
169	+	*/
170	+	private static final int suiteRuns =
171	+	Integer.getInteger("jsr166.suiteRuns", 1);
172	+
173	+	public JSR166TestCase() { super(); }
174	+	public JSR166TestCase(String name) { super(name); }
175	+
176		/**
177	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
178	<	*/
179	<	public static void main (String[] args) {
180	<	junit.textui.TestRunner.run (suite());
177	>	* A filter for tests to run, matching strings of the form
178	>	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
179	>	* Usefully combined with jsr166.runsPerTest.
180	>	*/
181	>	private static final Pattern methodFilter = methodFilter();
182	>
183	>	private static Pattern methodFilter() {
184	>	String regex = System.getProperty("jsr166.methodFilter");
185	>	return (regex == null) ? null : Pattern.compile(regex);
186	>	}
187	>
188	>	protected void runTest() throws Throwable {
189	>	if (methodFilter == null
190	>	|| methodFilter.matcher(toString()).find()) {
191	>	for (int i = 0; i < runsPerTest; i++) {
192	>	if (profileTests)
193	>	runTestProfiled();
194	>	else
195	>	super.runTest();
196	>	}
197	>	}
198	>	}
199	>
200	>	protected void runTestProfiled() throws Throwable {
201	>	// Warmup run, notably to trigger all needed classloading.
202	>	super.runTest();
203	>	long t0 = System.nanoTime();
204	>	try {
205	>	super.runTest();
206	>	} finally {
207	>	long elapsedMillis = millisElapsedSince(t0);
208	>	if (elapsedMillis >= profileThreshold)
209	>	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
210	>	}
211	>	}
212	>
213	>	/**
214	>	* Runs all JSR166 unit tests using junit.textui.TestRunner.
215	>	*/
216	>	public static void main(String[] args) {
217	>	main(suite(), args);
218	>	}
219	>
220	>	/**
221	>	* Runs all unit tests in the given test suite.
222	>	* Actual behavior influenced by jsr166.* system properties.
223	>	*/
224	>	static void main(Test suite, String[] args) {
225	>	if (useSecurityManager) {
226	>	System.err.println("Setting a permissive security manager");
227	>	Policy.setPolicy(permissivePolicy());
228	>	System.setSecurityManager(new SecurityManager());
229	>	}
230	>	for (int i = 0; i < suiteRuns; i++) {
231	>	TestResult result = junit.textui.TestRunner.run(suite);
232	>	if (!result.wasSuccessful())
233	>	System.exit(1);
234	>	System.gc();
235	>	System.runFinalization();
236	>	}
237	>	}
238	>
239	>	public static TestSuite newTestSuite(Object... suiteOrClasses) {
240	>	TestSuite suite = new TestSuite();
241	>	for (Object suiteOrClass : suiteOrClasses) {
242	>	if (suiteOrClass instanceof TestSuite)
243	>	suite.addTest((TestSuite) suiteOrClass);
244	>	else if (suiteOrClass instanceof Class)
245	>	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
246	>	else
247	>	throw new ClassCastException("not a test suite or class");
248	>	}
249	>	return suite;
250	>	}
251	>
252	>	public static void addNamedTestClasses(TestSuite suite,
253	>	String... testClassNames) {
254	>	for (String testClassName : testClassNames) {
255	>	try {
256	>	Class<?> testClass = Class.forName(testClassName);
257	>	Method m = testClass.getDeclaredMethod("suite",
258	>	new Class<?>[0]);
259	>	suite.addTest(newTestSuite((Test)m.invoke(null)));
260	>	} catch (Exception e) {
261	>	throw new Error("Missing test class", e);
262	>	}
263	>	}
264	>	}
265	>
266	>	public static final double JAVA_CLASS_VERSION;
267	>	public static final String JAVA_SPECIFICATION_VERSION;
268	>	static {
269	>	try {
270	>	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
271	>	new java.security.PrivilegedAction<Double>() {
272	>	public Double run() {
273	>	return Double.valueOf(System.getProperty("java.class.version"));}});
274	>	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
275	>	new java.security.PrivilegedAction<String>() {
276	>	public String run() {
277	>	return System.getProperty("java.specification.version");}});
278	>	} catch (Throwable t) {
279	>	throw new Error(t);
280	>	}
281	>	}
282	>
283	>	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
284	>	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
285	>	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
286	>	public static boolean atLeastJava9() {
287	>	return JAVA_CLASS_VERSION >= 53.0
288	>	// As of 2015-09, java9 still uses 52.0 class file version
289	>	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?(9|[0-9][0-9])$");
290	>	}
291	>	public static boolean atLeastJava10() {
292	>	return JAVA_CLASS_VERSION >= 54.0
293	>	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?[0-9][0-9]$");
294		}
295
296		/**
297	<	* Collects all JSR166 unit tests as one suite
298	<	*/
299	<	public static Test suite ( ) {
300	<	TestSuite suite = new TestSuite("JSR166 Unit Tests");
301	<
302	<	suite.addTest(new TestSuite(AbstractExecutorServiceTest.class));
303	<	suite.addTest(new TestSuite(AbstractQueuedSynchronizerTest.class));
304	<	suite.addTest(new TestSuite(ArrayBlockingQueueTest.class));
305	<	suite.addTest(new TestSuite(AtomicBooleanTest.class));
306	<	suite.addTest(new TestSuite(AtomicIntegerArrayTest.class));
307	<	suite.addTest(new TestSuite(AtomicIntegerFieldUpdaterTest.class));
308	<	suite.addTest(new TestSuite(AtomicIntegerTest.class));
309	<	suite.addTest(new TestSuite(AtomicLongArrayTest.class));
310	<	suite.addTest(new TestSuite(AtomicLongFieldUpdaterTest.class));
311	<	suite.addTest(new TestSuite(AtomicLongTest.class));
312	<	suite.addTest(new TestSuite(AtomicMarkableReferenceTest.class));
313	<	suite.addTest(new TestSuite(AtomicReferenceArrayTest.class));
314	<	suite.addTest(new TestSuite(AtomicReferenceFieldUpdaterTest.class));
315	<	suite.addTest(new TestSuite(AtomicReferenceTest.class));
316	<	suite.addTest(new TestSuite(AtomicStampedReferenceTest.class));
317	<	suite.addTest(new TestSuite(ConcurrentHashMapTest.class));
318	<	suite.addTest(new TestSuite(ConcurrentLinkedQueueTest.class));
319	<	suite.addTest(new TestSuite(CopyOnWriteArrayListTest.class));
320	<	suite.addTest(new TestSuite(CopyOnWriteArraySetTest.class));
321	<	suite.addTest(new TestSuite(CountDownLatchTest.class));
322	<	suite.addTest(new TestSuite(CyclicBarrierTest.class));
323	<	suite.addTest(new TestSuite(DelayQueueTest.class));
324	<	suite.addTest(new TestSuite(ExchangerTest.class));
325	<	suite.addTest(new TestSuite(ExecutorsTest.class));
326	<	suite.addTest(new TestSuite(ExecutorCompletionServiceTest.class));
327	<	suite.addTest(new TestSuite(FutureTaskTest.class));
328	<	suite.addTest(new TestSuite(LinkedBlockingQueueTest.class));
329	<	suite.addTest(new TestSuite(LinkedListTest.class));
330	<	suite.addTest(new TestSuite(LockSupportTest.class));
331	<	suite.addTest(new TestSuite(PriorityBlockingQueueTest.class));
332	<	suite.addTest(new TestSuite(PriorityQueueTest.class));
333	<	suite.addTest(new TestSuite(ReentrantLockTest.class));
334	<	suite.addTest(new TestSuite(ReentrantReadWriteLockTest.class));
335	<	suite.addTest(new TestSuite(ScheduledExecutorTest.class));
336	<	suite.addTest(new TestSuite(SemaphoreTest.class));
337	<	suite.addTest(new TestSuite(SynchronousQueueTest.class));
338	<	suite.addTest(new TestSuite(SystemTest.class));
339	<	suite.addTest(new TestSuite(ThreadLocalTest.class));
340	<	suite.addTest(new TestSuite(ThreadPoolExecutorTest.class));
341	<	suite.addTest(new TestSuite(ThreadTest.class));
342	<	suite.addTest(new TestSuite(TimeUnitTest.class));
343	<
297	>	* Collects all JSR166 unit tests as one suite.
298	>	*/
299	>	public static Test suite() {
300	>	// Java7+ test classes
301	>	TestSuite suite = newTestSuite(
302	>	ForkJoinPoolTest.suite(),
303	>	ForkJoinTaskTest.suite(),
304	>	RecursiveActionTest.suite(),
305	>	RecursiveTaskTest.suite(),
306	>	LinkedTransferQueueTest.suite(),
307	>	PhaserTest.suite(),
308	>	ThreadLocalRandomTest.suite(),
309	>	AbstractExecutorServiceTest.suite(),
310	>	AbstractQueueTest.suite(),
311	>	AbstractQueuedSynchronizerTest.suite(),
312	>	AbstractQueuedLongSynchronizerTest.suite(),
313	>	ArrayBlockingQueueTest.suite(),
314	>	ArrayDequeTest.suite(),
315	>	AtomicBooleanTest.suite(),
316	>	AtomicIntegerArrayTest.suite(),
317	>	AtomicIntegerFieldUpdaterTest.suite(),
318	>	AtomicIntegerTest.suite(),
319	>	AtomicLongArrayTest.suite(),
320	>	AtomicLongFieldUpdaterTest.suite(),
321	>	AtomicLongTest.suite(),
322	>	AtomicMarkableReferenceTest.suite(),
323	>	AtomicReferenceArrayTest.suite(),
324	>	AtomicReferenceFieldUpdaterTest.suite(),
325	>	AtomicReferenceTest.suite(),
326	>	AtomicStampedReferenceTest.suite(),
327	>	ConcurrentHashMapTest.suite(),
328	>	ConcurrentLinkedDequeTest.suite(),
329	>	ConcurrentLinkedQueueTest.suite(),
330	>	ConcurrentSkipListMapTest.suite(),
331	>	ConcurrentSkipListSubMapTest.suite(),
332	>	ConcurrentSkipListSetTest.suite(),
333	>	ConcurrentSkipListSubSetTest.suite(),
334	>	CopyOnWriteArrayListTest.suite(),
335	>	CopyOnWriteArraySetTest.suite(),
336	>	CountDownLatchTest.suite(),
337	>	CyclicBarrierTest.suite(),
338	>	DelayQueueTest.suite(),
339	>	EntryTest.suite(),
340	>	ExchangerTest.suite(),
341	>	ExecutorsTest.suite(),
342	>	ExecutorCompletionServiceTest.suite(),
343	>	FutureTaskTest.suite(),
344	>	LinkedBlockingDequeTest.suite(),
345	>	LinkedBlockingQueueTest.suite(),
346	>	LinkedListTest.suite(),
347	>	LockSupportTest.suite(),
348	>	PriorityBlockingQueueTest.suite(),
349	>	PriorityQueueTest.suite(),
350	>	ReentrantLockTest.suite(),
351	>	ReentrantReadWriteLockTest.suite(),
352	>	ScheduledExecutorTest.suite(),
353	>	ScheduledExecutorSubclassTest.suite(),
354	>	SemaphoreTest.suite(),
355	>	SynchronousQueueTest.suite(),
356	>	SystemTest.suite(),
357	>	ThreadLocalTest.suite(),
358	>	ThreadPoolExecutorTest.suite(),
359	>	ThreadPoolExecutorSubclassTest.suite(),
360	>	ThreadTest.suite(),
361	>	TimeUnitTest.suite(),
362	>	TreeMapTest.suite(),
363	>	TreeSetTest.suite(),
364	>	TreeSubMapTest.suite(),
365	>	TreeSubSetTest.suite());
366	>
367	>	// Java8+ test classes
368	>	if (atLeastJava8()) {
369	>	String[] java8TestClassNames = {
370	>	"Atomic8Test",
371	>	"CompletableFutureTest",
372	>	"ConcurrentHashMap8Test",
373	>	"CountedCompleterTest",
374	>	"DoubleAccumulatorTest",
375	>	"DoubleAdderTest",
376	>	"ForkJoinPool8Test",
377	>	"ForkJoinTask8Test",
378	>	"LongAccumulatorTest",
379	>	"LongAdderTest",
380	>	"SplittableRandomTest",
381	>	"StampedLockTest",
382	>	"ThreadLocalRandom8Test",
383	>	};
384	>	addNamedTestClasses(suite, java8TestClassNames);
385	>	}
386	>
387	>	// Java9+ test classes
388	>	if (atLeastJava9()) {
389	>	String[] java9TestClassNames = {
390	>	// Currently empty
391	>	};
392	>	addNamedTestClasses(suite, java9TestClassNames);
393	>	}
394	>
395		return suite;
396		}
397
398	+	/** Returns list of junit-style test method names in given class. */
399	+	public static ArrayList<String> testMethodNames(Class<?> testClass) {
400	+	Method[] methods = testClass.getDeclaredMethods();
401	+	ArrayList<String> names = new ArrayList<String>(methods.length);
402	+	for (Method method : methods) {
403	+	if (method.getName().startsWith("test")
404	+	&& Modifier.isPublic(method.getModifiers())
405	+	// method.getParameterCount() requires jdk8+
406	+	&& method.getParameterTypes().length == 0) {
407	+	names.add(method.getName());
408	+	}
409	+	}
410	+	return names;
411	+	}
412	+
413	+	/**
414	+	* Returns junit-style testSuite for the given test class, but
415	+	* parameterized by passing extra data to each test.
416	+	*/
417	+	public static <ExtraData> Test parameterizedTestSuite
418	+	(Class<? extends JSR166TestCase> testClass,
419	+	Class<ExtraData> dataClass,
420	+	ExtraData data) {
421	+	try {
422	+	TestSuite suite = new TestSuite();
423	+	Constructor c =
424	+	testClass.getDeclaredConstructor(dataClass, String.class);
425	+	for (String methodName : testMethodNames(testClass))
426	+	suite.addTest((Test) c.newInstance(data, methodName));
427	+	return suite;
428	+	} catch (Exception e) {
429	+	throw new Error(e);
430	+	}
431	+	}
432	+
433	+	/**
434	+	* Returns junit-style testSuite for the jdk8 extension of the
435	+	* given test class, but parameterized by passing extra data to
436	+	* each test.  Uses reflection to allow compilation in jdk7.
437	+	*/
438	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
439	+	(Class<? extends JSR166TestCase> testClass,
440	+	Class<ExtraData> dataClass,
441	+	ExtraData data) {
442	+	if (atLeastJava8()) {
443	+	String name = testClass.getName();
444	+	String name8 = name.replaceAll("Test$", "8Test");
445	+	if (name.equals(name8)) throw new Error(name);
446	+	try {
447	+	return (Test)
448	+	Class.forName(name8)
449	+	.getMethod("testSuite", new Class[] { dataClass })
450	+	.invoke(null, data);
451	+	} catch (Exception e) {
452	+	throw new Error(e);
453	+	}
454	+	} else {
455	+	return new TestSuite();
456	+	}
457	+
458	+	}
459	+
460	+	// Delays for timing-dependent tests, in milliseconds.
461
462		public static long SHORT_DELAY_MS;
463		public static long SMALL_DELAY_MS;
464		public static long MEDIUM_DELAY_MS;
465		public static long LONG_DELAY_MS;
466
153	–
467		/**
468	<	* Return the shortest timed delay. This could
468	>	* Returns the shortest timed delay. This could
469		* be reimplemented to use for example a Property.
470	<	*/
470	>	*/
471		protected long getShortDelay() {
472	<	return 100;
472	>	return 50;
473		}
474
162	–
475		/**
476	<	* Set delays as multiples of SHORT_DELAY.
476	>	* Sets delays as multiples of SHORT_DELAY.
477		*/
478	<	protected  void setDelays() {
478	>	protected void setDelays() {
479		SHORT_DELAY_MS = getShortDelay();
480	<	SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
480	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
481		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
482	<	LONG_DELAY_MS = SHORT_DELAY_MS * 50;
482	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
483	>	}
484	>
485	>	/**
486	>	* Returns a timeout in milliseconds to be used in tests that
487	>	* verify that operations block or time out.
488	>	*/
489	>	long timeoutMillis() {
490	>	return SHORT_DELAY_MS / 4;
491		}
492
493		/**
494	<	* Flag set true if any threadAssert methods fail
494	>	* Returns a new Date instance representing a time at least
495	>	* delayMillis milliseconds in the future.
496		*/
497	<	volatile boolean threadFailed;
497	>	Date delayedDate(long delayMillis) {
498	>	// Add 1 because currentTimeMillis is known to round into the past.
499	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
500	>	}
501
502		/**
503	<	* Initialize test to indicate that no thread assertions have failed
503	>	* The first exception encountered if any threadAssertXXX method fails.
504		*/
505	<	public void setUp() {
505	>	private final AtomicReference<Throwable> threadFailure
506	>	= new AtomicReference<Throwable>(null);
507	>
508	>	/**
509	>	* Records an exception so that it can be rethrown later in the test
510	>	* harness thread, triggering a test case failure.  Only the first
511	>	* failure is recorded; subsequent calls to this method from within
512	>	* the same test have no effect.
513	>	*/
514	>	public void threadRecordFailure(Throwable t) {
515	>	threadFailure.compareAndSet(null, t);
516	>	}
517	>
518	>	public void setUp() {
519		setDelays();
183	–	threadFailed = false;
520		}
521
522		/**
523	<	* Trigger test case failure if any thread assertions have failed
523	>	* Extra checks that get done for all test cases.
524	>	*
525	>	* Triggers test case failure if any thread assertions have failed,
526	>	* by rethrowing, in the test harness thread, any exception recorded
527	>	* earlier by threadRecordFailure.
528	>	*
529	>	* Triggers test case failure if interrupt status is set in the main thread.
530		*/
531	<	public void tearDown() {
532	<	assertFalse(threadFailed);
531	>	public void tearDown() throws Exception {
532	>	Throwable t = threadFailure.getAndSet(null);
533	>	if (t != null) {
534	>	if (t instanceof Error)
535	>	throw (Error) t;
536	>	else if (t instanceof RuntimeException)
537	>	throw (RuntimeException) t;
538	>	else if (t instanceof Exception)
539	>	throw (Exception) t;
540	>	else {
541	>	AssertionFailedError afe =
542	>	new AssertionFailedError(t.toString());
543	>	afe.initCause(t);
544	>	throw afe;
545	>	}
546	>	}
547	>
548	>	if (Thread.interrupted())
549	>	throw new AssertionFailedError("interrupt status set in main thread");
550	>
551	>	checkForkJoinPoolThreadLeaks();
552		}
553
554		/**
555	<	* Fail, also setting status to indicate current testcase should fail
556	<	*/
555	>	* Finds missing try { ... } finally { joinPool(e); }
556	>	*/
557	>	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
558	>	Thread[] survivors = new Thread[5];
559	>	int count = Thread.enumerate(survivors);
560	>	for (int i = 0; i < count; i++) {
561	>	Thread thread = survivors[i];
562	>	String name = thread.getName();
563	>	if (name.startsWith("ForkJoinPool-")) {
564	>	// give thread some time to terminate
565	>	thread.join(LONG_DELAY_MS);
566	>	if (!thread.isAlive()) continue;
567	>	throw new AssertionFailedError
568	>	(String.format("Found leaked ForkJoinPool thread test=%s thread=%s%n",
569	>	toString(), name));
570	>	}
571	>	}
572	>	}
573	>
574	>	/**
575	>	* Just like fail(reason), but additionally recording (using
576	>	* threadRecordFailure) any AssertionFailedError thrown, so that
577	>	* the current testcase will fail.
578	>	*/
579		public void threadFail(String reason) {
580	<	threadFailed = true;
581	<	fail(reason);
580	>	try {
581	>	fail(reason);
582	>	} catch (AssertionFailedError t) {
583	>	threadRecordFailure(t);
584	>	fail(reason);
585	>	}
586		}
587
588		/**
589	<	* If expression not true, set status to indicate current testcase
590	<	* should fail
591	<	*/
589	>	* Just like assertTrue(b), but additionally recording (using
590	>	* threadRecordFailure) any AssertionFailedError thrown, so that
591	>	* the current testcase will fail.
592	>	*/
593		public void threadAssertTrue(boolean b) {
594	<	if (!b) {
207	<	threadFailed = true;
594	>	try {
595		assertTrue(b);
596	+	} catch (AssertionFailedError t) {
597	+	threadRecordFailure(t);
598	+	throw t;
599		}
600		}
601
602		/**
603	<	* If expression not false, set status to indicate current testcase
604	<	* should fail
605	<	*/
603	>	* Just like assertFalse(b), but additionally recording (using
604	>	* threadRecordFailure) any AssertionFailedError thrown, so that
605	>	* the current testcase will fail.
606	>	*/
607		public void threadAssertFalse(boolean b) {
608	<	if (b) {
218	<	threadFailed = true;
608	>	try {
609		assertFalse(b);
610	+	} catch (AssertionFailedError t) {
611	+	threadRecordFailure(t);
612	+	throw t;
613		}
614		}
615
616		/**
617	<	* If argument not null, set status to indicate current testcase
618	<	* should fail
619	<	*/
617	>	* Just like assertNull(x), but additionally recording (using
618	>	* threadRecordFailure) any AssertionFailedError thrown, so that
619	>	* the current testcase will fail.
620	>	*/
621		public void threadAssertNull(Object x) {
622	<	if (x != null) {
229	<	threadFailed = true;
622	>	try {
623		assertNull(x);
624	+	} catch (AssertionFailedError t) {
625	+	threadRecordFailure(t);
626	+	throw t;
627		}
628		}
629
630		/**
631	<	* If arguments not equal, set status to indicate current testcase
632	<	* should fail
633	<	*/
631	>	* Just like assertEquals(x, y), but additionally recording (using
632	>	* threadRecordFailure) any AssertionFailedError thrown, so that
633	>	* the current testcase will fail.
634	>	*/
635		public void threadAssertEquals(long x, long y) {
636	<	if (x != y) {
240	<	threadFailed = true;
636	>	try {
637		assertEquals(x, y);
638	+	} catch (AssertionFailedError t) {
639	+	threadRecordFailure(t);
640	+	throw t;
641		}
642		}
643
644		/**
645	<	* If arguments not equal, set status to indicate current testcase
646	<	* should fail
647	<	*/
645	>	* Just like assertEquals(x, y), but additionally recording (using
646	>	* threadRecordFailure) any AssertionFailedError thrown, so that
647	>	* the current testcase will fail.
648	>	*/
649		public void threadAssertEquals(Object x, Object y) {
650	<	if (x != y && (x == null || !x.equals(y))) {
251	<	threadFailed = true;
650	>	try {
651		assertEquals(x, y);
652	+	} catch (AssertionFailedError fail) {
653	+	threadRecordFailure(fail);
654	+	throw fail;
655	+	} catch (Throwable fail) {
656	+	threadUnexpectedException(fail);
657	+	}
658	+	}
659	+
660	+	/**
661	+	* Just like assertSame(x, y), but additionally recording (using
662	+	* threadRecordFailure) any AssertionFailedError thrown, so that
663	+	* the current testcase will fail.
664	+	*/
665	+	public void threadAssertSame(Object x, Object y) {
666	+	try {
667	+	assertSame(x, y);
668	+	} catch (AssertionFailedError fail) {
669	+	threadRecordFailure(fail);
670	+	throw fail;
671		}
672		}
673
674		/**
675	<	* threadFail with message "should throw exception"
676	<	*/
675	>	* Calls threadFail with message "should throw exception".
676	>	*/
677		public void threadShouldThrow() {
678	<	threadFailed = true;
261	<	fail("should throw exception");
678	>	threadFail("should throw exception");
679		}
680
681		/**
682	<	* threadFail with message "Unexpected exception"
682	>	* Calls threadFail with message "should throw" + exceptionName.
683		*/
684	<	public void threadUnexpectedException() {
685	<	threadFailed = true;
269	<	fail("Unexpected exception");
684	>	public void threadShouldThrow(String exceptionName) {
685	>	threadFail("should throw " + exceptionName);
686		}
687
688	+	/**
689	+	* Records the given exception using {@link #threadRecordFailure},
690	+	* then rethrows the exception, wrapping it in an
691	+	* AssertionFailedError if necessary.
692	+	*/
693	+	public void threadUnexpectedException(Throwable t) {
694	+	threadRecordFailure(t);
695	+	t.printStackTrace();
696	+	if (t instanceof RuntimeException)
697	+	throw (RuntimeException) t;
698	+	else if (t instanceof Error)
699	+	throw (Error) t;
700	+	else {
701	+	AssertionFailedError afe =
702	+	new AssertionFailedError("unexpected exception: " + t);
703	+	afe.initCause(t);
704	+	throw afe;
705	+	}
706	+	}
707	+
708	+	/**
709	+	* Delays, via Thread.sleep, for the given millisecond delay, but
710	+	* if the sleep is shorter than specified, may re-sleep or yield
711	+	* until time elapses.
712	+	*/
713	+	static void delay(long millis) throws InterruptedException {
714	+	long startTime = System.nanoTime();
715	+	long ns = millis * 1000 * 1000;
716	+	for (;;) {
717	+	if (millis > 0L)
718	+	Thread.sleep(millis);
719	+	else // too short to sleep
720	+	Thread.yield();
721	+	long d = ns - (System.nanoTime() - startTime);
722	+	if (d > 0L)
723	+	millis = d / (1000 * 1000);
724	+	else
725	+	break;
726	+	}
727	+	}
728
729		/**
730	<	* Wait out termination of a thread pool or fail doing so
730	>	* Waits out termination of a thread pool or fails doing so.
731		*/
732	<	public void joinPool(ExecutorService exec) {
732	>	void joinPool(ExecutorService pool) {
733		try {
734	<	exec.shutdown();
735	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
736	<	} catch(InterruptedException ie) {
737	<	fail("Unexpected exception");
734	>	pool.shutdown();
735	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS))
736	>	fail("ExecutorService " + pool +
737	>	" did not terminate in a timely manner");
738	>	} catch (SecurityException ok) {
739	>	// Allowed in case test doesn't have privs
740	>	} catch (InterruptedException fail) {
741	>	fail("Unexpected InterruptedException");
742		}
743		}
744
745	+	/** Like Runnable, but with the freedom to throw anything */
746	+	interface Thunk { public void run() throws Throwable; }
747	+
748	+	/**
749	+	* Runs all the given tasks in parallel, failing if any fail.
750	+	* Useful for running multiple variants of tests that are
751	+	* necessarily individually slow because they must block.
752	+	*/
753	+	void testInParallel(Thunk ... thunks) {
754	+	ExecutorService pool = Executors.newCachedThreadPool();
755	+	try {
756	+	ArrayList<Future<?>> futures = new ArrayList<>(thunks.length);
757	+	for (final Thunk thunk : thunks)
758	+	futures.add(pool.submit(new CheckedRunnable() {
759	+	public void realRun() throws Throwable { thunk.run();}}));
760	+	for (Future<?> future : futures)
761	+	try {
762	+	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
763	+	} catch (ExecutionException ex) {
764	+	threadUnexpectedException(ex.getCause());
765	+	} catch (Exception ex) {
766	+	threadUnexpectedException(ex);
767	+	}
768	+	} finally {
769	+	joinPool(pool);
770	+	}
771	+	}
772	+
773	+	/**
774	+	* A debugging tool to print all stack traces, as jstack does.
775	+	*/
776	+	static void printAllStackTraces() {
777	+	for (ThreadInfo info :
778	+	ManagementFactory.getThreadMXBean()
779	+	.dumpAllThreads(true, true))
780	+	System.err.print(info);
781	+	}
782	+
783	+	/**
784	+	* Checks that thread does not terminate within the default
785	+	* millisecond delay of {@code timeoutMillis()}.
786	+	*/
787	+	void assertThreadStaysAlive(Thread thread) {
788	+	assertThreadStaysAlive(thread, timeoutMillis());
789	+	}
790
791		/**
792	<	* fail with message "should throw exception"
793	<	*/
792	>	* Checks that thread does not terminate within the given millisecond delay.
793	>	*/
794	>	void assertThreadStaysAlive(Thread thread, long millis) {
795	>	try {
796	>	// No need to optimize the failing case via Thread.join.
797	>	delay(millis);
798	>	assertTrue(thread.isAlive());
799	>	} catch (InterruptedException fail) {
800	>	fail("Unexpected InterruptedException");
801	>	}
802	>	}
803	>
804	>	/**
805	>	* Checks that the threads do not terminate within the default
806	>	* millisecond delay of {@code timeoutMillis()}.
807	>	*/
808	>	void assertThreadsStayAlive(Thread... threads) {
809	>	assertThreadsStayAlive(timeoutMillis(), threads);
810	>	}
811	>
812	>	/**
813	>	* Checks that the threads do not terminate within the given millisecond delay.
814	>	*/
815	>	void assertThreadsStayAlive(long millis, Thread... threads) {
816	>	try {
817	>	// No need to optimize the failing case via Thread.join.
818	>	delay(millis);
819	>	for (Thread thread : threads)
820	>	assertTrue(thread.isAlive());
821	>	} catch (InterruptedException fail) {
822	>	fail("Unexpected InterruptedException");
823	>	}
824	>	}
825	>
826	>	/**
827	>	* Checks that future.get times out, with the default timeout of
828	>	* {@code timeoutMillis()}.
829	>	*/
830	>	void assertFutureTimesOut(Future future) {
831	>	assertFutureTimesOut(future, timeoutMillis());
832	>	}
833	>
834	>	/**
835	>	* Checks that future.get times out, with the given millisecond timeout.
836	>	*/
837	>	void assertFutureTimesOut(Future future, long timeoutMillis) {
838	>	long startTime = System.nanoTime();
839	>	try {
840	>	future.get(timeoutMillis, MILLISECONDS);
841	>	shouldThrow();
842	>	} catch (TimeoutException success) {
843	>	} catch (Exception fail) {
844	>	threadUnexpectedException(fail);
845	>	} finally { future.cancel(true); }
846	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
847	>	}
848	>
849	>	/**
850	>	* Fails with message "should throw exception".
851	>	*/
852		public void shouldThrow() {
853		fail("Should throw exception");
854		}
855
856		/**
857	<	* fail with message "Unexpected exception"
857	>	* Fails with message "should throw " + exceptionName.
858		*/
859	<	public void unexpectedException() {
860	<	fail("Unexpected exception");
859	>	public void shouldThrow(String exceptionName) {
860	>	fail("Should throw " + exceptionName);
861		}
862
300	–
863		/**
864		* The number of elements to place in collections, arrays, etc.
865		*/
866	<	static final int SIZE = 20;
866	>	public static final int SIZE = 20;
867
868		// Some convenient Integer constants
869
870	<	static final Integer zero = new Integer(0);
871	<	static final Integer one = new Integer(1);
872	<	static final Integer two = new Integer(2);
873	<	static final Integer three  = new Integer(3);
874	<	static final Integer four  = new Integer(4);
875	<	static final Integer five  = new Integer(5);
876	<	static final Integer six = new Integer(6);
877	<	static final Integer seven = new Integer(7);
878	<	static final Integer eight = new Integer(8);
879	<	static final Integer nine = new Integer(9);
880	<	static final Integer m1  = new Integer(-1);
881	<	static final Integer m2  = new Integer(-2);
882	<	static final Integer m3  = new Integer(-3);
883	<	static final Integer m4 = new Integer(-4);
884	<	static final Integer m5 = new Integer(-5);
885	<	static final Integer m10 = new Integer(-10);
870	>	public static final Integer zero  = new Integer(0);
871	>	public static final Integer one   = new Integer(1);
872	>	public static final Integer two   = new Integer(2);
873	>	public static final Integer three = new Integer(3);
874	>	public static final Integer four  = new Integer(4);
875	>	public static final Integer five  = new Integer(5);
876	>	public static final Integer six   = new Integer(6);
877	>	public static final Integer seven = new Integer(7);
878	>	public static final Integer eight = new Integer(8);
879	>	public static final Integer nine  = new Integer(9);
880	>	public static final Integer m1  = new Integer(-1);
881	>	public static final Integer m2  = new Integer(-2);
882	>	public static final Integer m3  = new Integer(-3);
883	>	public static final Integer m4  = new Integer(-4);
884	>	public static final Integer m5  = new Integer(-5);
885	>	public static final Integer m6  = new Integer(-6);
886	>	public static final Integer m10 = new Integer(-10);
887	>
888	>	/**
889	>	* Runs Runnable r with a security policy that permits precisely
890	>	* the specified permissions.  If there is no current security
891	>	* manager, the runnable is run twice, both with and without a
892	>	* security manager.  We require that any security manager permit
893	>	* getPolicy/setPolicy.
894	>	*/
895	>	public void runWithPermissions(Runnable r, Permission... permissions) {
896	>	SecurityManager sm = System.getSecurityManager();
897	>	if (sm == null) {
898	>	r.run();
899	>	}
900	>	runWithSecurityManagerWithPermissions(r, permissions);
901	>	}
902
903	+	/**
904	+	* Runs Runnable r with a security policy that permits precisely
905	+	* the specified permissions.  If there is no current security
906	+	* manager, a temporary one is set for the duration of the
907	+	* Runnable.  We require that any security manager permit
908	+	* getPolicy/setPolicy.
909	+	*/
910	+	public void runWithSecurityManagerWithPermissions(Runnable r,
911	+	Permission... permissions) {
912	+	SecurityManager sm = System.getSecurityManager();
913	+	if (sm == null) {
914	+	Policy savedPolicy = Policy.getPolicy();
915	+	try {
916	+	Policy.setPolicy(permissivePolicy());
917	+	System.setSecurityManager(new SecurityManager());
918	+	runWithSecurityManagerWithPermissions(r, permissions);
919	+	} finally {
920	+	System.setSecurityManager(null);
921	+	Policy.setPolicy(savedPolicy);
922	+	}
923	+	} else {
924	+	Policy savedPolicy = Policy.getPolicy();
925	+	AdjustablePolicy policy = new AdjustablePolicy(permissions);
926	+	Policy.setPolicy(policy);
927	+
928	+	try {
929	+	r.run();
930	+	} finally {
931	+	policy.addPermission(new SecurityPermission("setPolicy"));
932	+	Policy.setPolicy(savedPolicy);
933	+	}
934	+	}
935	+	}
936	+
937	+	/**
938	+	* Runs a runnable without any permissions.
939	+	*/
940	+	public void runWithoutPermissions(Runnable r) {
941	+	runWithPermissions(r);
942	+	}
943
944		/**
945		* A security policy where new permissions can be dynamically added
946		* or all cleared.
947		*/
948	<	static class AdjustablePolicy extends java.security.Policy {
948	>	public static class AdjustablePolicy extends java.security.Policy {
949		Permissions perms = new Permissions();
950	<	AdjustablePolicy() { }
950	>	AdjustablePolicy(Permission... permissions) {
951	>	for (Permission permission : permissions)
952	>	perms.add(permission);
953	>	}
954		void addPermission(Permission perm) { perms.add(perm); }
955		void clearPermissions() { perms = new Permissions(); }
956	<	public PermissionCollection getPermissions(CodeSource cs) {
957	<	return perms;
958	<	}
959	<	public PermissionCollection getPermissions(ProtectionDomain pd) {
960	<	return perms;
961	<	}
962	<	public boolean implies(ProtectionDomain pd, Permission p) {
963	<	return perms.implies(p);
964	<	}
965	<	public void refresh() {}
956	>	public PermissionCollection getPermissions(CodeSource cs) {
957	>	return perms;
958	>	}
959	>	public PermissionCollection getPermissions(ProtectionDomain pd) {
960	>	return perms;
961	>	}
962	>	public boolean implies(ProtectionDomain pd, Permission p) {
963	>	return perms.implies(p);
964	>	}
965	>	public void refresh() {}
966	>	public String toString() {
967	>	List<Permission> ps = new ArrayList<Permission>();
968	>	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
969	>	ps.add(e.nextElement());
970	>	return "AdjustablePolicy with permissions " + ps;
971	>	}
972		}
973
974	+	/**
975	+	* Returns a policy containing all the permissions we ever need.
976	+	*/
977	+	public static Policy permissivePolicy() {
978	+	return new AdjustablePolicy
979	+	// Permissions j.u.c. needs directly
980	+	(new RuntimePermission("modifyThread"),
981	+	new RuntimePermission("getClassLoader"),
982	+	new RuntimePermission("setContextClassLoader"),
983	+	// Permissions needed to change permissions!
984	+	new SecurityPermission("getPolicy"),
985	+	new SecurityPermission("setPolicy"),
986	+	new RuntimePermission("setSecurityManager"),
987	+	// Permissions needed by the junit test harness
988	+	new RuntimePermission("accessDeclaredMembers"),
989	+	new PropertyPermission("*", "read"),
990	+	new java.io.FilePermission("<<ALL FILES>>", "read"));
991	+	}
992
993	<	// Some convenient Runnable classes
993	>	/**
994	>	* Sleeps until the given time has elapsed.
995	>	* Throws AssertionFailedError if interrupted.
996	>	*/
997	>	void sleep(long millis) {
998	>	try {
999	>	delay(millis);
1000	>	} catch (InterruptedException fail) {
1001	>	AssertionFailedError afe =
1002	>	new AssertionFailedError("Unexpected InterruptedException");
1003	>	afe.initCause(fail);
1004	>	throw afe;
1005	>	}
1006	>	}
1007
1008	<	static class NoOpRunnable implements Runnable {
1009	<	public void run() {}
1008	>	/**
1009	>	* Spin-waits up to the specified number of milliseconds for the given
1010	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1011	>	*/
1012	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1013	>	long startTime = System.nanoTime();
1014	>	for (;;) {
1015	>	Thread.State s = thread.getState();
1016	>	if (s == Thread.State.BLOCKED ||
1017	>	s == Thread.State.WAITING ||
1018	>	s == Thread.State.TIMED_WAITING)
1019	>	return;
1020	>	else if (s == Thread.State.TERMINATED)
1021	>	fail("Unexpected thread termination");
1022	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1023	>	threadAssertTrue(thread.isAlive());
1024	>	return;
1025	>	}
1026	>	Thread.yield();
1027	>	}
1028		}
1029
1030	<	static class NoOpCallable implements Callable {
1031	<	public Object call() { return Boolean.TRUE; }
1030	>	/**
1031	>	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
1032	>	* state: BLOCKED, WAITING, or TIMED_WAITING.
1033	>	*/
1034	>	void waitForThreadToEnterWaitState(Thread thread) {
1035	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
1036		}
1037
1038	<	static final String TEST_STRING = "a test string";
1038	>	/**
1039	>	* Returns the number of milliseconds since time given by
1040	>	* startNanoTime, which must have been previously returned from a
1041	>	* call to {@link System#nanoTime()}.
1042	>	*/
1043	>	static long millisElapsedSince(long startNanoTime) {
1044	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1045	>	}
1046
1047	<	static class StringTask implements Callable<String> {
1048	<	public String call() { return TEST_STRING; }
1047	>	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1048	>	//         long startTime = System.nanoTime();
1049	>	//         try {
1050	>	//             r.run();
1051	>	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1052	>	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1053	>	//             throw new AssertionFailedError("did not return promptly");
1054	>	//     }
1055	>
1056	>	//     void assertTerminatesPromptly(Runnable r) {
1057	>	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1058	>	//     }
1059	>
1060	>	/**
1061	>	* Checks that timed f.get() returns the expected value, and does not
1062	>	* wait for the timeout to elapse before returning.
1063	>	*/
1064	>	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1065	>	long startTime = System.nanoTime();
1066	>	try {
1067	>	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1068	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1069	>	if (millisElapsedSince(startTime) > timeoutMillis/2)
1070	>	throw new AssertionFailedError("timed get did not return promptly");
1071		}
1072
1073	<	static class NPETask implements Callable<String> {
1074	<	public String call() { throw new NullPointerException(); }
1073	>	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1074	>	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1075		}
1076
1077	<	static class CallableOne implements Callable<Integer> {
1078	<	public Integer call() { return one; }
1077	>	/**
1078	>	* Returns a new started daemon Thread running the given runnable.
1079	>	*/
1080	>	Thread newStartedThread(Runnable runnable) {
1081	>	Thread t = new Thread(runnable);
1082	>	t.setDaemon(true);
1083	>	t.start();
1084	>	return t;
1085		}
1086
1087	<	class ShortRunnable implements Runnable {
1088	<	public void run() {
1089	<	try {
1090	<	Thread.sleep(SHORT_DELAY_MS);
1091	<	}
1092	<	catch(Exception e) {
1093	<	threadUnexpectedException();
1087	>	/**
1088	>	* Waits for the specified time (in milliseconds) for the thread
1089	>	* to terminate (using {@link Thread#join(long)}), else interrupts
1090	>	* the thread (in the hope that it may terminate later) and fails.
1091	>	*/
1092	>	void awaitTermination(Thread t, long timeoutMillis) {
1093	>	try {
1094	>	t.join(timeoutMillis);
1095	>	} catch (InterruptedException fail) {
1096	>	threadUnexpectedException(fail);
1097	>	} finally {
1098	>	if (t.getState() != Thread.State.TERMINATED) {
1099	>	t.interrupt();
1100	>	fail("Test timed out");
1101		}
1102		}
1103		}
1104
1105	<	class ShortInterruptedRunnable implements Runnable {
1106	<	public void run() {
1105	>	/**
1106	>	* Waits for LONG_DELAY_MS milliseconds for the thread to
1107	>	* terminate (using {@link Thread#join(long)}), else interrupts
1108	>	* the thread (in the hope that it may terminate later) and fails.
1109	>	*/
1110	>	void awaitTermination(Thread t) {
1111	>	awaitTermination(t, LONG_DELAY_MS);
1112	>	}
1113	>
1114	>	// Some convenient Runnable classes
1115	>
1116	>	public abstract class CheckedRunnable implements Runnable {
1117	>	protected abstract void realRun() throws Throwable;
1118	>
1119	>	public final void run() {
1120		try {
1121	<	Thread.sleep(SHORT_DELAY_MS);
1122	<	threadShouldThrow();
1123	<	}
389	<	catch(InterruptedException success) {
1121	>	realRun();
1122	>	} catch (Throwable fail) {
1123	>	threadUnexpectedException(fail);
1124		}
1125		}
1126		}
1127
1128	<	class SmallRunnable implements Runnable {
1129	<	public void run() {
1128	>	public abstract class RunnableShouldThrow implements Runnable {
1129	>	protected abstract void realRun() throws Throwable;
1130	>
1131	>	final Class<?> exceptionClass;
1132	>
1133	>	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
1134	>	this.exceptionClass = exceptionClass;
1135	>	}
1136	>
1137	>	public final void run() {
1138		try {
1139	<	Thread.sleep(SMALL_DELAY_MS);
1140	<	}
1141	<	catch(Exception e) {
1142	<	threadUnexpectedException();
1139	>	realRun();
1140	>	threadShouldThrow(exceptionClass.getSimpleName());
1141	>	} catch (Throwable t) {
1142	>	if (! exceptionClass.isInstance(t))
1143	>	threadUnexpectedException(t);
1144		}
1145		}
1146		}
1147
1148	<	class SmallPossiblyInterruptedRunnable implements Runnable {
1149	<	public void run() {
1148	>	public abstract class ThreadShouldThrow extends Thread {
1149	>	protected abstract void realRun() throws Throwable;
1150	>
1151	>	final Class<?> exceptionClass;
1152	>
1153	>	<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) {
1154	>	this.exceptionClass = exceptionClass;
1155	>	}
1156	>
1157	>	public final void run() {
1158		try {
1159	<	Thread.sleep(SMALL_DELAY_MS);
1160	<	}
1161	<	catch(Exception e) {
1159	>	realRun();
1160	>	threadShouldThrow(exceptionClass.getSimpleName());
1161	>	} catch (Throwable t) {
1162	>	if (! exceptionClass.isInstance(t))
1163	>	threadUnexpectedException(t);
1164		}
1165		}
1166		}
1167
1168	<	class SmallCallable implements Callable {
1169	<	public Object call() {
1168	>	public abstract class CheckedInterruptedRunnable implements Runnable {
1169	>	protected abstract void realRun() throws Throwable;
1170	>
1171	>	public final void run() {
1172		try {
1173	<	Thread.sleep(SMALL_DELAY_MS);
1173	>	realRun();
1174	>	threadShouldThrow("InterruptedException");
1175	>	} catch (InterruptedException success) {
1176	>	threadAssertFalse(Thread.interrupted());
1177	>	} catch (Throwable fail) {
1178	>	threadUnexpectedException(fail);
1179		}
420	–	catch(Exception e) {
421	–	threadUnexpectedException();
422	–	}
423	–	return Boolean.TRUE;
1180		}
1181		}
1182
1183	<	class SmallInterruptedRunnable implements Runnable {
1184	<	public void run() {
1183	>	public abstract class CheckedCallable<T> implements Callable<T> {
1184	>	protected abstract T realCall() throws Throwable;
1185	>
1186	>	public final T call() {
1187		try {
1188	<	Thread.sleep(SMALL_DELAY_MS);
1189	<	threadShouldThrow();
1190	<	}
1191	<	catch(InterruptedException success) {
1188	>	return realCall();
1189	>	} catch (Throwable fail) {
1190	>	threadUnexpectedException(fail);
1191	>	return null;
1192		}
1193		}
1194		}
1195
1196	+	public abstract class CheckedInterruptedCallable<T>
1197	+	implements Callable<T> {
1198	+	protected abstract T realCall() throws Throwable;
1199
1200	<	class MediumRunnable implements Runnable {
440	<	public void run() {
1200	>	public final T call() {
1201		try {
1202	<	Thread.sleep(MEDIUM_DELAY_MS);
1203	<	}
1204	<	catch(Exception e) {
1205	<	threadUnexpectedException();
1202	>	T result = realCall();
1203	>	threadShouldThrow("InterruptedException");
1204	>	return result;
1205	>	} catch (InterruptedException success) {
1206	>	threadAssertFalse(Thread.interrupted());
1207	>	} catch (Throwable fail) {
1208	>	threadUnexpectedException(fail);
1209		}
1210	+	return null;
1211		}
1212		}
1213
1214	<	class MediumInterruptedRunnable implements Runnable {
1215	<	public void run() {
1214	>	public static class NoOpRunnable implements Runnable {
1215	>	public void run() {}
1216	>	}
1217	>
1218	>	public static class NoOpCallable implements Callable {
1219	>	public Object call() { return Boolean.TRUE; }
1220	>	}
1221	>
1222	>	public static final String TEST_STRING = "a test string";
1223	>
1224	>	public static class StringTask implements Callable<String> {
1225	>	public String call() { return TEST_STRING; }
1226	>	}
1227	>
1228	>	public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1229	>	return new CheckedCallable<String>() {
1230	>	protected String realCall() {
1231	>	try {
1232	>	latch.await();
1233	>	} catch (InterruptedException quittingTime) {}
1234	>	return TEST_STRING;
1235	>	}};
1236	>	}
1237	>
1238	>	public Runnable awaiter(final CountDownLatch latch) {
1239	>	return new CheckedRunnable() {
1240	>	public void realRun() throws InterruptedException {
1241	>	await(latch);
1242	>	}};
1243	>	}
1244	>
1245	>	public void await(CountDownLatch latch) {
1246	>	try {
1247	>	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1248	>	} catch (Throwable fail) {
1249	>	threadUnexpectedException(fail);
1250	>	}
1251	>	}
1252	>
1253	>	public void await(Semaphore semaphore) {
1254	>	try {
1255	>	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1256	>	} catch (Throwable fail) {
1257	>	threadUnexpectedException(fail);
1258	>	}
1259	>	}
1260	>
1261	>	//     /**
1262	>	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1263	>	//      */
1264	>	//     public void await(AtomicBoolean flag) {
1265	>	//         await(flag, LONG_DELAY_MS);
1266	>	//     }
1267	>
1268	>	//     /**
1269	>	//      * Spin-waits up to the specified timeout until flag becomes true.
1270	>	//      */
1271	>	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1272	>	//         long startTime = System.nanoTime();
1273	>	//         while (!flag.get()) {
1274	>	//             if (millisElapsedSince(startTime) > timeoutMillis)
1275	>	//                 throw new AssertionFailedError("timed out");
1276	>	//             Thread.yield();
1277	>	//         }
1278	>	//     }
1279	>
1280	>	public static class NPETask implements Callable<String> {
1281	>	public String call() { throw new NullPointerException(); }
1282	>	}
1283	>
1284	>	public static class CallableOne implements Callable<Integer> {
1285	>	public Integer call() { return one; }
1286	>	}
1287	>
1288	>	public class ShortRunnable extends CheckedRunnable {
1289	>	protected void realRun() throws Throwable {
1290	>	delay(SHORT_DELAY_MS);
1291	>	}
1292	>	}
1293	>
1294	>	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1295	>	protected void realRun() throws InterruptedException {
1296	>	delay(SHORT_DELAY_MS);
1297	>	}
1298	>	}
1299	>
1300	>	public class SmallRunnable extends CheckedRunnable {
1301	>	protected void realRun() throws Throwable {
1302	>	delay(SMALL_DELAY_MS);
1303	>	}
1304	>	}
1305	>
1306	>	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1307	>	protected void realRun() {
1308		try {
1309	<	Thread.sleep(MEDIUM_DELAY_MS);
1310	<	threadShouldThrow();
455	<	}
456	<	catch(InterruptedException success) {
457	<	}
1309	>	delay(SMALL_DELAY_MS);
1310	>	} catch (InterruptedException ok) {}
1311		}
1312		}
1313
1314	<	class MediumPossiblyInterruptedRunnable implements Runnable {
1315	<	public void run() {
1314	>	public class SmallCallable extends CheckedCallable {
1315	>	protected Object realCall() throws InterruptedException {
1316	>	delay(SMALL_DELAY_MS);
1317	>	return Boolean.TRUE;
1318	>	}
1319	>	}
1320	>
1321	>	public class MediumRunnable extends CheckedRunnable {
1322	>	protected void realRun() throws Throwable {
1323	>	delay(MEDIUM_DELAY_MS);
1324	>	}
1325	>	}
1326	>
1327	>	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1328	>	protected void realRun() throws InterruptedException {
1329	>	delay(MEDIUM_DELAY_MS);
1330	>	}
1331	>	}
1332	>
1333	>	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1334	>	return new CheckedRunnable() {
1335	>	protected void realRun() {
1336	>	try {
1337	>	delay(timeoutMillis);
1338	>	} catch (InterruptedException ok) {}
1339	>	}};
1340	>	}
1341	>
1342	>	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1343	>	protected void realRun() {
1344		try {
1345	<	Thread.sleep(MEDIUM_DELAY_MS);
1346	<	}
466	<	catch(InterruptedException success) {
467	<	}
1345	>	delay(MEDIUM_DELAY_MS);
1346	>	} catch (InterruptedException ok) {}
1347		}
1348		}
1349
1350	<	class LongPossiblyInterruptedRunnable implements Runnable {
1351	<	public void run() {
1350	>	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1351	>	protected void realRun() {
1352		try {
1353	<	Thread.sleep(LONG_DELAY_MS);
1354	<	}
476	<	catch(InterruptedException success) {
477	<	}
1353	>	delay(LONG_DELAY_MS);
1354	>	} catch (InterruptedException ok) {}
1355		}
1356		}
1357
1358		/**
1359		* For use as ThreadFactory in constructors
1360		*/
1361	<	static class SimpleThreadFactory implements ThreadFactory{
1362	<	public Thread newThread(Runnable r){
1361	>	public static class SimpleThreadFactory implements ThreadFactory {
1362	>	public Thread newThread(Runnable r) {
1363		return new Thread(r);
1364	<	}
1364	>	}
1365	>	}
1366	>
1367	>	public interface TrackedRunnable extends Runnable {
1368	>	boolean isDone();
1369		}
1370
1371	<	static class TrackedShortRunnable implements Runnable {
1372	<	volatile boolean done = false;
1371	>	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1372	>	return new TrackedRunnable() {
1373	>	private volatile boolean done = false;
1374	>	public boolean isDone() { return done; }
1375	>	public void run() {
1376	>	try {
1377	>	delay(timeoutMillis);
1378	>	done = true;
1379	>	} catch (InterruptedException ok) {}
1380	>	}
1381	>	};
1382	>	}
1383	>
1384	>	public static class TrackedShortRunnable implements Runnable {
1385	>	public volatile boolean done = false;
1386		public void run() {
1387		try {
1388	<	Thread.sleep(SMALL_DELAY_MS);
1388	>	delay(SHORT_DELAY_MS);
1389		done = true;
1390	<	} catch(Exception e){
497	<	}
1390	>	} catch (InterruptedException ok) {}
1391		}
1392		}
1393
1394	<	static class TrackedMediumRunnable implements Runnable {
1395	<	volatile boolean done = false;
1394	>	public static class TrackedSmallRunnable implements Runnable {
1395	>	public volatile boolean done = false;
1396		public void run() {
1397		try {
1398	<	Thread.sleep(MEDIUM_DELAY_MS);
1398	>	delay(SMALL_DELAY_MS);
1399		done = true;
1400	<	} catch(Exception e){
508	<	}
1400	>	} catch (InterruptedException ok) {}
1401		}
1402		}
1403
1404	<	static class TrackedLongRunnable implements Runnable {
1405	<	volatile boolean done = false;
1404	>	public static class TrackedMediumRunnable implements Runnable {
1405	>	public volatile boolean done = false;
1406		public void run() {
1407		try {
1408	<	Thread.sleep(LONG_DELAY_MS);
1408	>	delay(MEDIUM_DELAY_MS);
1409		done = true;
1410	<	} catch(Exception e){
519	<	}
1410	>	} catch (InterruptedException ok) {}
1411		}
1412		}
1413
1414	<	static class TrackedNoOpRunnable implements Runnable {
1415	<	volatile boolean done = false;
1414	>	public static class TrackedLongRunnable implements Runnable {
1415	>	public volatile boolean done = false;
1416	>	public void run() {
1417	>	try {
1418	>	delay(LONG_DELAY_MS);
1419	>	done = true;
1420	>	} catch (InterruptedException ok) {}
1421	>	}
1422	>	}
1423	>
1424	>	public static class TrackedNoOpRunnable implements Runnable {
1425	>	public volatile boolean done = false;
1426		public void run() {
1427		done = true;
1428		}
1429		}
1430
1431	<	static class TrackedCallable implements Callable {
1432	<	volatile boolean done = false;
1431	>	public static class TrackedCallable implements Callable {
1432	>	public volatile boolean done = false;
1433		public Object call() {
1434		try {
1435	<	Thread.sleep(SMALL_DELAY_MS);
1435	>	delay(SMALL_DELAY_MS);
1436		done = true;
1437	<	} catch(Exception e){
537	<	}
1437	>	} catch (InterruptedException ok) {}
1438		return Boolean.TRUE;
1439		}
1440		}
1441
1442	+	/**
1443	+	* Analog of CheckedRunnable for RecursiveAction
1444	+	*/
1445	+	public abstract class CheckedRecursiveAction extends RecursiveAction {
1446	+	protected abstract void realCompute() throws Throwable;
1447	+
1448	+	@Override protected final void compute() {
1449	+	try {
1450	+	realCompute();
1451	+	} catch (Throwable fail) {
1452	+	threadUnexpectedException(fail);
1453	+	}
1454	+	}
1455	+	}
1456	+
1457	+	/**
1458	+	* Analog of CheckedCallable for RecursiveTask
1459	+	*/
1460	+	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1461	+	protected abstract T realCompute() throws Throwable;
1462	+
1463	+	@Override protected final T compute() {
1464	+	try {
1465	+	return realCompute();
1466	+	} catch (Throwable fail) {
1467	+	threadUnexpectedException(fail);
1468	+	return null;
1469	+	}
1470	+	}
1471	+	}
1472
1473		/**
1474		* For use as RejectedExecutionHandler in constructors
1475		*/
1476	<	static class NoOpREHandler implements RejectedExecutionHandler{
1477	<	public void rejectedExecution(Runnable r, ThreadPoolExecutor executor){}
1476	>	public static class NoOpREHandler implements RejectedExecutionHandler {
1477	>	public void rejectedExecution(Runnable r,
1478	>	ThreadPoolExecutor executor) {}
1479	>	}
1480	>
1481	>	/**
1482	>	* A CyclicBarrier that uses timed await and fails with
1483	>	* AssertionFailedErrors instead of throwing checked exceptions.
1484	>	*/
1485	>	public class CheckedBarrier extends CyclicBarrier {
1486	>	public CheckedBarrier(int parties) { super(parties); }
1487	>
1488	>	public int await() {
1489	>	try {
1490	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1491	>	} catch (TimeoutException timedOut) {
1492	>	throw new AssertionFailedError("timed out");
1493	>	} catch (Exception fail) {
1494	>	AssertionFailedError afe =
1495	>	new AssertionFailedError("Unexpected exception: " + fail);
1496	>	afe.initCause(fail);
1497	>	throw afe;
1498	>	}
1499	>	}
1500	>	}
1501	>
1502	>	void checkEmpty(BlockingQueue q) {
1503	>	try {
1504	>	assertTrue(q.isEmpty());
1505	>	assertEquals(0, q.size());
1506	>	assertNull(q.peek());
1507	>	assertNull(q.poll());
1508	>	assertNull(q.poll(0, MILLISECONDS));
1509	>	assertEquals(q.toString(), "[]");
1510	>	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1511	>	assertFalse(q.iterator().hasNext());
1512	>	try {
1513	>	q.element();
1514	>	shouldThrow();
1515	>	} catch (NoSuchElementException success) {}
1516	>	try {
1517	>	q.iterator().next();
1518	>	shouldThrow();
1519	>	} catch (NoSuchElementException success) {}
1520	>	try {
1521	>	q.remove();
1522	>	shouldThrow();
1523	>	} catch (NoSuchElementException success) {}
1524	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1525	>	}
1526	>
1527	>	void assertSerialEquals(Object x, Object y) {
1528	>	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1529	>	}
1530	>
1531	>	void assertNotSerialEquals(Object x, Object y) {
1532	>	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1533	>	}
1534	>
1535	>	byte[] serialBytes(Object o) {
1536	>	try {
1537	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1538	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1539	>	oos.writeObject(o);
1540	>	oos.flush();
1541	>	oos.close();
1542	>	return bos.toByteArray();
1543	>	} catch (Throwable fail) {
1544	>	threadUnexpectedException(fail);
1545	>	return new byte[0];
1546	>	}
1547	>	}
1548	>
1549	>	@SuppressWarnings("unchecked")
1550	>	<T> T serialClone(T o) {
1551	>	try {
1552	>	ObjectInputStream ois = new ObjectInputStream
1553	>	(new ByteArrayInputStream(serialBytes(o)));
1554	>	T clone = (T) ois.readObject();
1555	>	assertSame(o.getClass(), clone.getClass());
1556	>	return clone;
1557	>	} catch (Throwable fail) {
1558	>	threadUnexpectedException(fail);
1559	>	return null;
1560	>	}
1561	>	}
1562	>
1563	>	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1564	>	Runnable... throwingActions) {
1565	>	for (Runnable throwingAction : throwingActions) {
1566	>	boolean threw = false;
1567	>	try { throwingAction.run(); }
1568	>	catch (Throwable t) {
1569	>	threw = true;
1570	>	if (!expectedExceptionClass.isInstance(t)) {
1571	>	AssertionFailedError afe =
1572	>	new AssertionFailedError
1573	>	("Expected " + expectedExceptionClass.getName() +
1574	>	", got " + t.getClass().getName());
1575	>	afe.initCause(t);
1576	>	threadUnexpectedException(afe);
1577	>	}
1578	>	}
1579	>	if (!threw)
1580	>	shouldThrow(expectedExceptionClass.getName());
1581	>	}
1582	>	}
1583	>
1584	>	public void assertIteratorExhausted(Iterator<?> it) {
1585	>	try {
1586	>	it.next();
1587	>	shouldThrow();
1588	>	} catch (NoSuchElementException success) {}
1589	>	assertFalse(it.hasNext());
1590		}
549	–
550	–
1591		}

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