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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.2 by dl, Sat Sep 20 00:31:57 2003 UTC vs.
Revision 1.145 by jsr166, Fri Sep 25 05:41:29 2015 UTC

#	Line 1 | Line 1
1		/*
2	<	* Written by members of JCP JSR-166 Expert Group and released to the
3	<	* public domain. Use, modify, and redistribute this code in any way
4	<	* without acknowledgement. Other contributors include Andrew Wright,
5	<	* Jeffrey Hayes, Pat Fischer, Mike Judd.
2	>	* Written by Doug Lea with assistance from members of JCP JSR-166
3	>	* Expert Group and released to the public domain, as explained at
4	>	* http://creativecommons.org/publicdomain/zero/1.0/
5	>	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	>	* Pat Fisher, Mike Judd.
7		*/
8
9	<	import junit.framework.*;
10	<	import java.util.*;
10	<	import java.util.concurrent.*;
11	<	import java.io.*;
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 and
62	<	* utility methods, as well as a simple framework for helping to make
63	<	* sure that assertions failing in generated threads cause the
64	<	* associated test that generated them to itself fail (which JUnit doe
65	<	* not otherwise arrange).  The rules for creating such tests are:
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 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
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	>	* {@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>
76	>	* this way, but enough to live with.
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>
81	>	* assertion failures.
82		*
83	<	* <li>All delays and timeouts must use one of the constants {@link
84	<	* SHORT_DELAY_MS}, {@link SMALL_DELAY_MS}, {@link MEDIUM_DELAY_MS},
85	<	* {@link LONG_DELAY_MS}. The idea here is that a SHORT is always
86	<	* discriminatable from zero time, and always allows enough time for
87	<	* the small amounts of computation (creating a thread, calling a few
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.
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 {@link joinPool} method can be used to do this when
97	<	* using Executors.</li>
94	>	* <li>All threads generated must be joined inside each test case
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.
98		*
99		* </ol>
100	+	*
101	+	* <p><b>Other notes</b>
102	+	* <ul>
103	+	*
104	+	* <li>Usually, there is one testcase method per JSR166 method
105	+	* covering "normal" operation, and then as many exception-testing
106	+	* methods as there are exceptions the method can throw. Sometimes
107	+	* there are multiple tests per JSR166 method when the different
108	+	* "normal" behaviors differ significantly. And sometimes testcases
109	+	* cover multiple methods when they cannot be tested in
110	+	* isolation.
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
115	+	* the property is tested. To find out, read the code.
116	+	*
117	+	* <li>These tests are "conformance tests", and do not attempt to
118	+	* test throughput, latency, scalability or other performance factors
119	+	* (see the separate "jtreg" tests for a set intended to check these
120	+	* for the most central aspects of functionality.) So, most tests use
121	+	* the smallest sensible numbers of threads, collection sizes, etc
122	+	* needed to check basic conformance.
123	+	*
124	+	* <li>The test classes currently do not declare inclusion in
125	+	* any particular package to simplify things for people integrating
126	+	* them in TCK test suites.
127	+	*
128	+	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
129	+	* runs all JSR166 unit tests.
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	+	* 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	+	for (int i = 0; i < 2; i++) {
202	+	long startTime = System.nanoTime();
203	+	super.runTest();
204	+	long elapsedMillis = millisElapsedSince(startTime);
205	+	if (elapsedMillis < profileThreshold)
206	+	break;
207	+	// Never report first run of any test; treat it as a
208	+	// warmup run, notably to trigger all needed classloading,
209	+	if (i > 0)
210	+	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
211	+	}
212	+	}
213	+
214	+	/**
215	+	* Runs all JSR166 unit tests using junit.textui.TestRunner.
216	+	*/
217	+	public static void main(String[] args) {
218	+	main(suite(), args);
219	+	}
220	+
221	+	/**
222	+	* Runs all unit tests in the given test suite.
223	+	* Actual behavior influenced by jsr166.* system properties.
224	+	*/
225	+	static void main(Test suite, String[] args) {
226	+	if (useSecurityManager) {
227	+	System.err.println("Setting a permissive security manager");
228	+	Policy.setPolicy(permissivePolicy());
229	+	System.setSecurityManager(new SecurityManager());
230	+	}
231	+	for (int i = 0; i < suiteRuns; i++) {
232	+	TestResult result = junit.textui.TestRunner.run(suite);
233	+	if (!result.wasSuccessful())
234	+	System.exit(1);
235	+	System.gc();
236	+	System.runFinalization();
237	+	}
238	+	}
239	+
240	+	public static TestSuite newTestSuite(Object... suiteOrClasses) {
241	+	TestSuite suite = new TestSuite();
242	+	for (Object suiteOrClass : suiteOrClasses) {
243	+	if (suiteOrClass instanceof TestSuite)
244	+	suite.addTest((TestSuite) suiteOrClass);
245	+	else if (suiteOrClass instanceof Class)
246	+	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
247	+	else
248	+	throw new ClassCastException("not a test suite or class");
249	+	}
250	+	return suite;
251	+	}
252	+
253	+	public static void addNamedTestClasses(TestSuite suite,
254	+	String... testClassNames) {
255	+	for (String testClassName : testClassNames) {
256	+	try {
257	+	Class<?> testClass = Class.forName(testClassName);
258	+	Method m = testClass.getDeclaredMethod("suite",
259	+	new Class<?>[0]);
260	+	suite.addTest(newTestSuite((Test)m.invoke(null)));
261	+	} catch (Exception e) {
262	+	throw new Error("Missing test class", e);
263	+	}
264	+	}
265	+	}
266	+
267	+	public static final double JAVA_CLASS_VERSION;
268	+	public static final String JAVA_SPECIFICATION_VERSION;
269	+	static {
270	+	try {
271	+	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
272	+	new java.security.PrivilegedAction<Double>() {
273	+	public Double run() {
274	+	return Double.valueOf(System.getProperty("java.class.version"));}});
275	+	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
276	+	new java.security.PrivilegedAction<String>() {
277	+	public String run() {
278	+	return System.getProperty("java.specification.version");}});
279	+	} catch (Throwable t) {
280	+	throw new Error(t);
281	+	}
282	+	}
283	+
284	+	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
285	+	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
286	+	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
287	+	public static boolean atLeastJava9() {
288	+	return JAVA_CLASS_VERSION >= 53.0
289	+	// As of 2015-09, java9 still uses 52.0 class file version
290	+	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?(9|[0-9][0-9])$");
291	+	}
292	+	public static boolean atLeastJava10() {
293	+	return JAVA_CLASS_VERSION >= 54.0
294	+	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?[0-9][0-9]$");
295	+	}
296	+
297	+	/**
298	+	* Collects all JSR166 unit tests as one suite.
299	+	*/
300	+	public static Test suite() {
301	+	// Java7+ test classes
302	+	TestSuite suite = newTestSuite(
303	+	ForkJoinPoolTest.suite(),
304	+	ForkJoinTaskTest.suite(),
305	+	RecursiveActionTest.suite(),
306	+	RecursiveTaskTest.suite(),
307	+	LinkedTransferQueueTest.suite(),
308	+	PhaserTest.suite(),
309	+	ThreadLocalRandomTest.suite(),
310	+	AbstractExecutorServiceTest.suite(),
311	+	AbstractQueueTest.suite(),
312	+	AbstractQueuedSynchronizerTest.suite(),
313	+	AbstractQueuedLongSynchronizerTest.suite(),
314	+	ArrayBlockingQueueTest.suite(),
315	+	ArrayDequeTest.suite(),
316	+	AtomicBooleanTest.suite(),
317	+	AtomicIntegerArrayTest.suite(),
318	+	AtomicIntegerFieldUpdaterTest.suite(),
319	+	AtomicIntegerTest.suite(),
320	+	AtomicLongArrayTest.suite(),
321	+	AtomicLongFieldUpdaterTest.suite(),
322	+	AtomicLongTest.suite(),
323	+	AtomicMarkableReferenceTest.suite(),
324	+	AtomicReferenceArrayTest.suite(),
325	+	AtomicReferenceFieldUpdaterTest.suite(),
326	+	AtomicReferenceTest.suite(),
327	+	AtomicStampedReferenceTest.suite(),
328	+	ConcurrentHashMapTest.suite(),
329	+	ConcurrentLinkedDequeTest.suite(),
330	+	ConcurrentLinkedQueueTest.suite(),
331	+	ConcurrentSkipListMapTest.suite(),
332	+	ConcurrentSkipListSubMapTest.suite(),
333	+	ConcurrentSkipListSetTest.suite(),
334	+	ConcurrentSkipListSubSetTest.suite(),
335	+	CopyOnWriteArrayListTest.suite(),
336	+	CopyOnWriteArraySetTest.suite(),
337	+	CountDownLatchTest.suite(),
338	+	CyclicBarrierTest.suite(),
339	+	DelayQueueTest.suite(),
340	+	EntryTest.suite(),
341	+	ExchangerTest.suite(),
342	+	ExecutorsTest.suite(),
343	+	ExecutorCompletionServiceTest.suite(),
344	+	FutureTaskTest.suite(),
345	+	LinkedBlockingDequeTest.suite(),
346	+	LinkedBlockingQueueTest.suite(),
347	+	LinkedListTest.suite(),
348	+	LockSupportTest.suite(),
349	+	PriorityBlockingQueueTest.suite(),
350	+	PriorityQueueTest.suite(),
351	+	ReentrantLockTest.suite(),
352	+	ReentrantReadWriteLockTest.suite(),
353	+	ScheduledExecutorTest.suite(),
354	+	ScheduledExecutorSubclassTest.suite(),
355	+	SemaphoreTest.suite(),
356	+	SynchronousQueueTest.suite(),
357	+	SystemTest.suite(),
358	+	ThreadLocalTest.suite(),
359	+	ThreadPoolExecutorTest.suite(),
360	+	ThreadPoolExecutorSubclassTest.suite(),
361	+	ThreadTest.suite(),
362	+	TimeUnitTest.suite(),
363	+	TreeMapTest.suite(),
364	+	TreeSetTest.suite(),
365	+	TreeSubMapTest.suite(),
366	+	TreeSubSetTest.suite());
367	+
368	+	// Java8+ test classes
369	+	if (atLeastJava8()) {
370	+	String[] java8TestClassNames = {
371	+	"Atomic8Test",
372	+	"CompletableFutureTest",
373	+	"ConcurrentHashMap8Test",
374	+	"CountedCompleterTest",
375	+	"DoubleAccumulatorTest",
376	+	"DoubleAdderTest",
377	+	"ForkJoinPool8Test",
378	+	"ForkJoinTask8Test",
379	+	"LongAccumulatorTest",
380	+	"LongAdderTest",
381	+	"SplittableRandomTest",
382	+	"StampedLockTest",
383	+	"SubmissionPublisherTest",
384	+	"ThreadLocalRandom8Test",
385	+	};
386	+	addNamedTestClasses(suite, java8TestClassNames);
387	+	}
388	+
389	+	// Java9+ test classes
390	+	if (atLeastJava9()) {
391	+	String[] java9TestClassNames = {
392	+	// Currently empty, but expecting varhandle tests
393	+	};
394	+	addNamedTestClasses(suite, java9TestClassNames);
395	+	}
396	+
397	+	return suite;
398	+	}
399	+
400	+	/** Returns list of junit-style test method names in given class. */
401	+	public static ArrayList<String> testMethodNames(Class<?> testClass) {
402	+	Method[] methods = testClass.getDeclaredMethods();
403	+	ArrayList<String> names = new ArrayList<String>(methods.length);
404	+	for (Method method : methods) {
405	+	if (method.getName().startsWith("test")
406	+	&& Modifier.isPublic(method.getModifiers())
407	+	// method.getParameterCount() requires jdk8+
408	+	&& method.getParameterTypes().length == 0) {
409	+	names.add(method.getName());
410	+	}
411	+	}
412	+	return names;
413	+	}
414	+
415	+	/**
416	+	* Returns junit-style testSuite for the given test class, but
417	+	* parameterized by passing extra data to each test.
418	+	*/
419	+	public static <ExtraData> Test parameterizedTestSuite
420	+	(Class<? extends JSR166TestCase> testClass,
421	+	Class<ExtraData> dataClass,
422	+	ExtraData data) {
423	+	try {
424	+	TestSuite suite = new TestSuite();
425	+	Constructor c =
426	+	testClass.getDeclaredConstructor(dataClass, String.class);
427	+	for (String methodName : testMethodNames(testClass))
428	+	suite.addTest((Test) c.newInstance(data, methodName));
429	+	return suite;
430	+	} catch (Exception e) {
431	+	throw new Error(e);
432	+	}
433	+	}
434	+
435	+	/**
436	+	* Returns junit-style testSuite for the jdk8 extension of the
437	+	* given test class, but parameterized by passing extra data to
438	+	* each test.  Uses reflection to allow compilation in jdk7.
439	+	*/
440	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
441	+	(Class<? extends JSR166TestCase> testClass,
442	+	Class<ExtraData> dataClass,
443	+	ExtraData data) {
444	+	if (atLeastJava8()) {
445	+	String name = testClass.getName();
446	+	String name8 = name.replaceAll("Test$", "8Test");
447	+	if (name.equals(name8)) throw new Error(name);
448	+	try {
449	+	return (Test)
450	+	Class.forName(name8)
451	+	.getMethod("testSuite", new Class[] { dataClass })
452	+	.invoke(null, data);
453	+	} catch (Exception e) {
454	+	throw new Error(e);
455	+	}
456	+	} else {
457	+	return new TestSuite();
458	+	}
459	+
460	+	}
461	+
462	+	// Delays for timing-dependent tests, in milliseconds.
463
464		public static long SHORT_DELAY_MS;
465		public static long SMALL_DELAY_MS;
466		public static long MEDIUM_DELAY_MS;
467		public static long LONG_DELAY_MS;
468
61	–
469		/**
470	<	* Return the shortest timed delay. This could
471	<	* be reimplmented to use for example a Property.
472	<	*/
470	>	* Returns the shortest timed delay. This could
471	>	* be reimplemented to use for example a Property.
472	>	*/
473		protected long getShortDelay() {
474		return 50;
475		}
476
70	–
477		/**
478	<	* Set delays as multiples fo SHORT_DELAY.
478	>	* Sets delays as multiples of SHORT_DELAY.
479		*/
480	<	protected  void setDelays() {
480	>	protected void setDelays() {
481		SHORT_DELAY_MS = getShortDelay();
482	<	SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
482	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
483		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
484	<	LONG_DELAY_MS = SHORT_DELAY_MS * 50;
484	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
485		}
486
487		/**
488	<	* Flag set true if any threadAssert methods fail
488	>	* Returns a timeout in milliseconds to be used in tests that
489	>	* verify that operations block or time out.
490		*/
491	<	protected volatile boolean threadFailed;
491	>	long timeoutMillis() {
492	>	return SHORT_DELAY_MS / 4;
493	>	}
494	>
495	>	/**
496	>	* Returns a new Date instance representing a time at least
497	>	* delayMillis milliseconds in the future.
498	>	*/
499	>	Date delayedDate(long delayMillis) {
500	>	// Add 1 because currentTimeMillis is known to round into the past.
501	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
502	>	}
503
504		/**
505	<	* Initialize test to indicat that no thread assertions have failed
505	>	* The first exception encountered if any threadAssertXXX method fails.
506		*/
507	<	public void setUp() {
507	>	private final AtomicReference<Throwable> threadFailure
508	>	= new AtomicReference<Throwable>(null);
509	>
510	>	/**
511	>	* Records an exception so that it can be rethrown later in the test
512	>	* harness thread, triggering a test case failure.  Only the first
513	>	* failure is recorded; subsequent calls to this method from within
514	>	* the same test have no effect.
515	>	*/
516	>	public void threadRecordFailure(Throwable t) {
517	>	threadFailure.compareAndSet(null, t);
518	>	}
519	>
520	>	public void setUp() {
521		setDelays();
91	–	threadFailed = false;
522		}
523
524		/**
525	<	* Trigger test case failure if any thread assertions have failed
525	>	* Extra checks that get done for all test cases.
526	>	*
527	>	* Triggers test case failure if any thread assertions have failed,
528	>	* by rethrowing, in the test harness thread, any exception recorded
529	>	* earlier by threadRecordFailure.
530	>	*
531	>	* Triggers test case failure if interrupt status is set in the main thread.
532	>	*/
533	>	public void tearDown() throws Exception {
534	>	Throwable t = threadFailure.getAndSet(null);
535	>	if (t != null) {
536	>	if (t instanceof Error)
537	>	throw (Error) t;
538	>	else if (t instanceof RuntimeException)
539	>	throw (RuntimeException) t;
540	>	else if (t instanceof Exception)
541	>	throw (Exception) t;
542	>	else {
543	>	AssertionFailedError afe =
544	>	new AssertionFailedError(t.toString());
545	>	afe.initCause(t);
546	>	throw afe;
547	>	}
548	>	}
549	>
550	>	if (Thread.interrupted())
551	>	throw new AssertionFailedError("interrupt status set in main thread");
552	>
553	>	checkForkJoinPoolThreadLeaks();
554	>	}
555	>
556	>	/**
557	>	* Finds missing try { ... } finally { joinPool(e); }
558		*/
559	<	public void tearDown() {
560	<	assertFalse(threadFailed);
559	>	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
560	>	Thread[] survivors = new Thread[5];
561	>	int count = Thread.enumerate(survivors);
562	>	for (int i = 0; i < count; i++) {
563	>	Thread thread = survivors[i];
564	>	String name = thread.getName();
565	>	if (name.startsWith("ForkJoinPool-")) {
566	>	// give thread some time to terminate
567	>	thread.join(LONG_DELAY_MS);
568	>	if (!thread.isAlive()) continue;
569	>	throw new AssertionFailedError
570	>	(String.format("Found leaked ForkJoinPool thread test=%s thread=%s%n",
571	>	toString(), name));
572	>	}
573	>	}
574		}
575
576	+	/**
577	+	* Just like fail(reason), but additionally recording (using
578	+	* threadRecordFailure) any AssertionFailedError thrown, so that
579	+	* the current testcase will fail.
580	+	*/
581		public void threadFail(String reason) {
582	<	threadFailed = true;
583	<	fail(reason);
582	>	try {
583	>	fail(reason);
584	>	} catch (AssertionFailedError t) {
585	>	threadRecordFailure(t);
586	>	fail(reason);
587	>	}
588		}
589
590	+	/**
591	+	* Just like assertTrue(b), but additionally recording (using
592	+	* threadRecordFailure) any AssertionFailedError thrown, so that
593	+	* the current testcase will fail.
594	+	*/
595		public void threadAssertTrue(boolean b) {
596	<	if (!b) {
108	<	threadFailed = true;
596	>	try {
597		assertTrue(b);
598	+	} catch (AssertionFailedError t) {
599	+	threadRecordFailure(t);
600	+	throw t;
601		}
602		}
603	+
604	+	/**
605	+	* Just like assertFalse(b), but additionally recording (using
606	+	* threadRecordFailure) any AssertionFailedError thrown, so that
607	+	* the current testcase will fail.
608	+	*/
609		public void threadAssertFalse(boolean b) {
610	<	if (b) {
114	<	threadFailed = true;
610	>	try {
611		assertFalse(b);
612	+	} catch (AssertionFailedError t) {
613	+	threadRecordFailure(t);
614	+	throw t;
615		}
616		}
617	+
618	+	/**
619	+	* Just like assertNull(x), but additionally recording (using
620	+	* threadRecordFailure) any AssertionFailedError thrown, so that
621	+	* the current testcase will fail.
622	+	*/
623		public void threadAssertNull(Object x) {
624	<	if (x != null) {
120	<	threadFailed = true;
624	>	try {
625		assertNull(x);
626	+	} catch (AssertionFailedError t) {
627	+	threadRecordFailure(t);
628	+	throw t;
629		}
630		}
631	+
632	+	/**
633	+	* Just like assertEquals(x, y), but additionally recording (using
634	+	* threadRecordFailure) any AssertionFailedError thrown, so that
635	+	* the current testcase will fail.
636	+	*/
637		public void threadAssertEquals(long x, long y) {
638	<	if (x != y) {
126	<	threadFailed = true;
638	>	try {
639		assertEquals(x, y);
640	+	} catch (AssertionFailedError t) {
641	+	threadRecordFailure(t);
642	+	throw t;
643		}
644		}
645	+
646	+	/**
647	+	* Just like assertEquals(x, y), but additionally recording (using
648	+	* threadRecordFailure) any AssertionFailedError thrown, so that
649	+	* the current testcase will fail.
650	+	*/
651		public void threadAssertEquals(Object x, Object y) {
652	<	if (x != y && (x == null || !x.equals(y))) {
132	<	threadFailed = true;
652	>	try {
653		assertEquals(x, y);
654	+	} catch (AssertionFailedError fail) {
655	+	threadRecordFailure(fail);
656	+	throw fail;
657	+	} catch (Throwable fail) {
658	+	threadUnexpectedException(fail);
659	+	}
660	+	}
661	+
662	+	/**
663	+	* Just like assertSame(x, y), but additionally recording (using
664	+	* threadRecordFailure) any AssertionFailedError thrown, so that
665	+	* the current testcase will fail.
666	+	*/
667	+	public void threadAssertSame(Object x, Object y) {
668	+	try {
669	+	assertSame(x, y);
670	+	} catch (AssertionFailedError fail) {
671	+	threadRecordFailure(fail);
672	+	throw fail;
673	+	}
674	+	}
675	+
676	+	/**
677	+	* Calls threadFail with message "should throw exception".
678	+	*/
679	+	public void threadShouldThrow() {
680	+	threadFail("should throw exception");
681	+	}
682	+
683	+	/**
684	+	* Calls threadFail with message "should throw" + exceptionName.
685	+	*/
686	+	public void threadShouldThrow(String exceptionName) {
687	+	threadFail("should throw " + exceptionName);
688	+	}
689	+
690	+	/**
691	+	* Records the given exception using {@link #threadRecordFailure},
692	+	* then rethrows the exception, wrapping it in an
693	+	* AssertionFailedError if necessary.
694	+	*/
695	+	public void threadUnexpectedException(Throwable t) {
696	+	threadRecordFailure(t);
697	+	t.printStackTrace();
698	+	if (t instanceof RuntimeException)
699	+	throw (RuntimeException) t;
700	+	else if (t instanceof Error)
701	+	throw (Error) t;
702	+	else {
703	+	AssertionFailedError afe =
704	+	new AssertionFailedError("unexpected exception: " + t);
705	+	afe.initCause(t);
706	+	throw afe;
707	+	}
708	+	}
709	+
710	+	/**
711	+	* Delays, via Thread.sleep, for the given millisecond delay, but
712	+	* if the sleep is shorter than specified, may re-sleep or yield
713	+	* until time elapses.
714	+	*/
715	+	static void delay(long millis) throws InterruptedException {
716	+	long startTime = System.nanoTime();
717	+	long ns = millis * 1000 * 1000;
718	+	for (;;) {
719	+	if (millis > 0L)
720	+	Thread.sleep(millis);
721	+	else // too short to sleep
722	+	Thread.yield();
723	+	long d = ns - (System.nanoTime() - startTime);
724	+	if (d > 0L)
725	+	millis = d / (1000 * 1000);
726	+	else
727	+	break;
728	+	}
729	+	}
730	+
731	+	/**
732	+	* Waits out termination of a thread pool or fails doing so.
733	+	*/
734	+	void joinPool(ExecutorService pool) {
735	+	try {
736	+	pool.shutdown();
737	+	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS))
738	+	fail("ExecutorService " + pool +
739	+	" did not terminate in a timely manner");
740	+	} catch (SecurityException ok) {
741	+	// Allowed in case test doesn't have privs
742	+	} catch (InterruptedException fail) {
743	+	fail("Unexpected InterruptedException");
744		}
745		}
746
747	+	/** Like Runnable, but with the freedom to throw anything */
748	+	interface Action { public void run() throws Throwable; }
749	+
750		/**
751	<	* Wait out termination of a thread pool or fail doing so
751	>	* Runs all the given actions in parallel, failing if any fail.
752	>	* Useful for running multiple variants of tests that are
753	>	* necessarily individually slow because they must block.
754		*/
755	<	public void joinPool(ExecutorService exec) {
755	>	void testInParallel(Action ... actions) {
756	>	ExecutorService pool = Executors.newCachedThreadPool();
757		try {
758	<	exec.shutdown();
759	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
760	<	} catch(InterruptedException ie) {
761	<	fail("unexpected exception");
758	>	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
759	>	for (final Action action : actions)
760	>	futures.add(pool.submit(new CheckedRunnable() {
761	>	public void realRun() throws Throwable { action.run();}}));
762	>	for (Future<?> future : futures)
763	>	try {
764	>	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
765	>	} catch (ExecutionException ex) {
766	>	threadUnexpectedException(ex.getCause());
767	>	} catch (Exception ex) {
768	>	threadUnexpectedException(ex);
769	>	}
770	>	} finally {
771	>	joinPool(pool);
772		}
773		}
774
775	+	/**
776	+	* A debugging tool to print all stack traces, as jstack does.
777	+	*/
778	+	static void printAllStackTraces() {
779	+	for (ThreadInfo info :
780	+	ManagementFactory.getThreadMXBean()
781	+	.dumpAllThreads(true, true))
782	+	System.err.print(info);
783	+	}
784	+
785	+	/**
786	+	* Checks that thread does not terminate within the default
787	+	* millisecond delay of {@code timeoutMillis()}.
788	+	*/
789	+	void assertThreadStaysAlive(Thread thread) {
790	+	assertThreadStaysAlive(thread, timeoutMillis());
791	+	}
792	+
793	+	/**
794	+	* Checks that thread does not terminate within the given millisecond delay.
795	+	*/
796	+	void assertThreadStaysAlive(Thread thread, long millis) {
797	+	try {
798	+	// No need to optimize the failing case via Thread.join.
799	+	delay(millis);
800	+	assertTrue(thread.isAlive());
801	+	} catch (InterruptedException fail) {
802	+	fail("Unexpected InterruptedException");
803	+	}
804	+	}
805	+
806	+	/**
807	+	* Checks that the threads do not terminate within the default
808	+	* millisecond delay of {@code timeoutMillis()}.
809	+	*/
810	+	void assertThreadsStayAlive(Thread... threads) {
811	+	assertThreadsStayAlive(timeoutMillis(), threads);
812	+	}
813	+
814	+	/**
815	+	* Checks that the threads do not terminate within the given millisecond delay.
816	+	*/
817	+	void assertThreadsStayAlive(long millis, Thread... threads) {
818	+	try {
819	+	// No need to optimize the failing case via Thread.join.
820	+	delay(millis);
821	+	for (Thread thread : threads)
822	+	assertTrue(thread.isAlive());
823	+	} catch (InterruptedException fail) {
824	+	fail("Unexpected InterruptedException");
825	+	}
826	+	}
827	+
828	+	/**
829	+	* Checks that future.get times out, with the default timeout of
830	+	* {@code timeoutMillis()}.
831	+	*/
832	+	void assertFutureTimesOut(Future future) {
833	+	assertFutureTimesOut(future, timeoutMillis());
834	+	}
835	+
836	+	/**
837	+	* Checks that future.get times out, with the given millisecond timeout.
838	+	*/
839	+	void assertFutureTimesOut(Future future, long timeoutMillis) {
840	+	long startTime = System.nanoTime();
841	+	try {
842	+	future.get(timeoutMillis, MILLISECONDS);
843	+	shouldThrow();
844	+	} catch (TimeoutException success) {
845	+	} catch (Exception fail) {
846	+	threadUnexpectedException(fail);
847	+	} finally { future.cancel(true); }
848	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
849	+	}
850	+
851	+	/**
852	+	* Fails with message "should throw exception".
853	+	*/
854	+	public void shouldThrow() {
855	+	fail("Should throw exception");
856	+	}
857
858	+	/**
859	+	* Fails with message "should throw " + exceptionName.
860	+	*/
861	+	public void shouldThrow(String exceptionName) {
862	+	fail("Should throw " + exceptionName);
863	+	}
864
865		/**
866		* The number of elements to place in collections, arrays, etc.
#	Line 155 | Line 869 | public class JSR166TestCase extends Test
869
870		// Some convenient Integer constants
871
872	<	public static final Integer zero = new Integer(0);
873	<	public static final Integer one = new Integer(1);
874	<	public static final Integer two = new Integer(2);
875	<	public static final Integer three  = new Integer(3);
872	>	public static final Integer zero  = new Integer(0);
873	>	public static final Integer one   = new Integer(1);
874	>	public static final Integer two   = new Integer(2);
875	>	public static final Integer three = new Integer(3);
876		public static final Integer four  = new Integer(4);
877		public static final Integer five  = new Integer(5);
878	<	public static final Integer six = new Integer(6);
878	>	public static final Integer six   = new Integer(6);
879		public static final Integer seven = new Integer(7);
880		public static final Integer eight = new Integer(8);
881	<	public static final Integer nine = new Integer(9);
881	>	public static final Integer nine  = new Integer(9);
882		public static final Integer m1  = new Integer(-1);
883		public static final Integer m2  = new Integer(-2);
884		public static final Integer m3  = new Integer(-3);
885	<	public static final Integer m4 = new Integer(-4);
886	<	public static final Integer m5 = new Integer(-5);
885	>	public static final Integer m4  = new Integer(-4);
886	>	public static final Integer m5  = new Integer(-5);
887	>	public static final Integer m6  = new Integer(-6);
888		public static final Integer m10 = new Integer(-10);
889
890	+	/**
891	+	* Runs Runnable r with a security policy that permits precisely
892	+	* the specified permissions.  If there is no current security
893	+	* manager, the runnable is run twice, both with and without a
894	+	* security manager.  We require that any security manager permit
895	+	* getPolicy/setPolicy.
896	+	*/
897	+	public void runWithPermissions(Runnable r, Permission... permissions) {
898	+	SecurityManager sm = System.getSecurityManager();
899	+	if (sm == null) {
900	+	r.run();
901	+	}
902	+	runWithSecurityManagerWithPermissions(r, permissions);
903	+	}
904
905	<	// Some convenient Runnable classes
905	>	/**
906	>	* Runs Runnable r with a security policy that permits precisely
907	>	* the specified permissions.  If there is no current security
908	>	* manager, a temporary one is set for the duration of the
909	>	* Runnable.  We require that any security manager permit
910	>	* getPolicy/setPolicy.
911	>	*/
912	>	public void runWithSecurityManagerWithPermissions(Runnable r,
913	>	Permission... permissions) {
914	>	SecurityManager sm = System.getSecurityManager();
915	>	if (sm == null) {
916	>	Policy savedPolicy = Policy.getPolicy();
917	>	try {
918	>	Policy.setPolicy(permissivePolicy());
919	>	System.setSecurityManager(new SecurityManager());
920	>	runWithSecurityManagerWithPermissions(r, permissions);
921	>	} finally {
922	>	System.setSecurityManager(null);
923	>	Policy.setPolicy(savedPolicy);
924	>	}
925	>	} else {
926	>	Policy savedPolicy = Policy.getPolicy();
927	>	AdjustablePolicy policy = new AdjustablePolicy(permissions);
928	>	Policy.setPolicy(policy);
929
930	<	public static class NoOpRunnable implements Runnable {
931	<	public void run() {}
930	>	try {
931	>	r.run();
932	>	} finally {
933	>	policy.addPermission(new SecurityPermission("setPolicy"));
934	>	Policy.setPolicy(savedPolicy);
935	>	}
936	>	}
937		}
938
939	<	public static class NoOpCallable implements Callable {
940	<	public Object call() { return Boolean.TRUE; }
939	>	/**
940	>	* Runs a runnable without any permissions.
941	>	*/
942	>	public void runWithoutPermissions(Runnable r) {
943	>	runWithPermissions(r);
944		}
945
946	<	public class ShortRunnable implements Runnable {
947	<	public void run() {
948	<	try {
949	<	Thread.sleep(SHORT_DELAY_MS);
946	>	/**
947	>	* A security policy where new permissions can be dynamically added
948	>	* or all cleared.
949	>	*/
950	>	public static class AdjustablePolicy extends java.security.Policy {
951	>	Permissions perms = new Permissions();
952	>	AdjustablePolicy(Permission... permissions) {
953	>	for (Permission permission : permissions)
954	>	perms.add(permission);
955	>	}
956	>	void addPermission(Permission perm) { perms.add(perm); }
957	>	void clearPermissions() { perms = new Permissions(); }
958	>	public PermissionCollection getPermissions(CodeSource cs) {
959	>	return perms;
960	>	}
961	>	public PermissionCollection getPermissions(ProtectionDomain pd) {
962	>	return perms;
963	>	}
964	>	public boolean implies(ProtectionDomain pd, Permission p) {
965	>	return perms.implies(p);
966	>	}
967	>	public void refresh() {}
968	>	public String toString() {
969	>	List<Permission> ps = new ArrayList<Permission>();
970	>	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
971	>	ps.add(e.nextElement());
972	>	return "AdjustablePolicy with permissions " + ps;
973	>	}
974	>	}
975	>
976	>	/**
977	>	* Returns a policy containing all the permissions we ever need.
978	>	*/
979	>	public static Policy permissivePolicy() {
980	>	return new AdjustablePolicy
981	>	// Permissions j.u.c. needs directly
982	>	(new RuntimePermission("modifyThread"),
983	>	new RuntimePermission("getClassLoader"),
984	>	new RuntimePermission("setContextClassLoader"),
985	>	// Permissions needed to change permissions!
986	>	new SecurityPermission("getPolicy"),
987	>	new SecurityPermission("setPolicy"),
988	>	new RuntimePermission("setSecurityManager"),
989	>	// Permissions needed by the junit test harness
990	>	new RuntimePermission("accessDeclaredMembers"),
991	>	new PropertyPermission("*", "read"),
992	>	new java.io.FilePermission("<<ALL FILES>>", "read"));
993	>	}
994	>
995	>	/**
996	>	* Sleeps until the given time has elapsed.
997	>	* Throws AssertionFailedError if interrupted.
998	>	*/
999	>	void sleep(long millis) {
1000	>	try {
1001	>	delay(millis);
1002	>	} catch (InterruptedException fail) {
1003	>	AssertionFailedError afe =
1004	>	new AssertionFailedError("Unexpected InterruptedException");
1005	>	afe.initCause(fail);
1006	>	throw afe;
1007	>	}
1008	>	}
1009	>
1010	>	/**
1011	>	* Spin-waits up to the specified number of milliseconds for the given
1012	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1013	>	*/
1014	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1015	>	long startTime = System.nanoTime();
1016	>	for (;;) {
1017	>	Thread.State s = thread.getState();
1018	>	if (s == Thread.State.BLOCKED ||
1019	>	s == Thread.State.WAITING ||
1020	>	s == Thread.State.TIMED_WAITING)
1021	>	return;
1022	>	else if (s == Thread.State.TERMINATED)
1023	>	fail("Unexpected thread termination");
1024	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1025	>	threadAssertTrue(thread.isAlive());
1026	>	return;
1027		}
1028	<	catch(Exception e) {
1029	<	threadFail("unexpectedException");
1028	>	Thread.yield();
1029	>	}
1030	>	}
1031	>
1032	>	/**
1033	>	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
1034	>	* state: BLOCKED, WAITING, or TIMED_WAITING.
1035	>	*/
1036	>	void waitForThreadToEnterWaitState(Thread thread) {
1037	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
1038	>	}
1039	>
1040	>	/**
1041	>	* Returns the number of milliseconds since time given by
1042	>	* startNanoTime, which must have been previously returned from a
1043	>	* call to {@link System#nanoTime()}.
1044	>	*/
1045	>	static long millisElapsedSince(long startNanoTime) {
1046	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1047	>	}
1048	>
1049	>	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1050	>	//         long startTime = System.nanoTime();
1051	>	//         try {
1052	>	//             r.run();
1053	>	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1054	>	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1055	>	//             throw new AssertionFailedError("did not return promptly");
1056	>	//     }
1057	>
1058	>	//     void assertTerminatesPromptly(Runnable r) {
1059	>	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1060	>	//     }
1061	>
1062	>	/**
1063	>	* Checks that timed f.get() returns the expected value, and does not
1064	>	* wait for the timeout to elapse before returning.
1065	>	*/
1066	>	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1067	>	long startTime = System.nanoTime();
1068	>	try {
1069	>	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1070	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1071	>	if (millisElapsedSince(startTime) > timeoutMillis/2)
1072	>	throw new AssertionFailedError("timed get did not return promptly");
1073	>	}
1074	>
1075	>	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1076	>	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1077	>	}
1078	>
1079	>	/**
1080	>	* Returns a new started daemon Thread running the given runnable.
1081	>	*/
1082	>	Thread newStartedThread(Runnable runnable) {
1083	>	Thread t = new Thread(runnable);
1084	>	t.setDaemon(true);
1085	>	t.start();
1086	>	return t;
1087	>	}
1088	>
1089	>	/**
1090	>	* Waits for the specified time (in milliseconds) for the thread
1091	>	* to terminate (using {@link Thread#join(long)}), else interrupts
1092	>	* the thread (in the hope that it may terminate later) and fails.
1093	>	*/
1094	>	void awaitTermination(Thread t, long timeoutMillis) {
1095	>	try {
1096	>	t.join(timeoutMillis);
1097	>	} catch (InterruptedException fail) {
1098	>	threadUnexpectedException(fail);
1099	>	} finally {
1100	>	if (t.getState() != Thread.State.TERMINATED) {
1101	>	t.interrupt();
1102	>	fail("Test timed out");
1103		}
1104		}
1105		}
1106
1107	<	public class ShortInterruptedRunnable implements Runnable {
1108	<	public void run() {
1107	>	/**
1108	>	* Waits for LONG_DELAY_MS milliseconds for the thread to
1109	>	* terminate (using {@link Thread#join(long)}), else interrupts
1110	>	* the thread (in the hope that it may terminate later) and fails.
1111	>	*/
1112	>	void awaitTermination(Thread t) {
1113	>	awaitTermination(t, LONG_DELAY_MS);
1114	>	}
1115	>
1116	>	// Some convenient Runnable classes
1117	>
1118	>	public abstract class CheckedRunnable implements Runnable {
1119	>	protected abstract void realRun() throws Throwable;
1120	>
1121	>	public final void run() {
1122		try {
1123	<	Thread.sleep(SHORT_DELAY_MS);
1124	<	threadFail("should throw IE");
1123	>	realRun();
1124	>	} catch (Throwable fail) {
1125	>	threadUnexpectedException(fail);
1126		}
1127	<	catch(InterruptedException success) {
1127	>	}
1128	>	}
1129	>
1130	>	public abstract class RunnableShouldThrow implements Runnable {
1131	>	protected abstract void realRun() throws Throwable;
1132	>
1133	>	final Class<?> exceptionClass;
1134	>
1135	>	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
1136	>	this.exceptionClass = exceptionClass;
1137	>	}
1138	>
1139	>	public final void run() {
1140	>	try {
1141	>	realRun();
1142	>	threadShouldThrow(exceptionClass.getSimpleName());
1143	>	} catch (Throwable t) {
1144	>	if (! exceptionClass.isInstance(t))
1145	>	threadUnexpectedException(t);
1146		}
1147		}
1148		}
1149
1150	<	public class SmallRunnable implements Runnable {
1151	<	public void run() {
1150	>	public abstract class ThreadShouldThrow extends Thread {
1151	>	protected abstract void realRun() throws Throwable;
1152	>
1153	>	final Class<?> exceptionClass;
1154	>
1155	>	<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) {
1156	>	this.exceptionClass = exceptionClass;
1157	>	}
1158	>
1159	>	public final void run() {
1160		try {
1161	<	Thread.sleep(SMALL_DELAY_MS);
1161	>	realRun();
1162	>	threadShouldThrow(exceptionClass.getSimpleName());
1163	>	} catch (Throwable t) {
1164	>	if (! exceptionClass.isInstance(t))
1165	>	threadUnexpectedException(t);
1166		}
1167	<	catch(Exception e) {
1168	<	threadFail("unexpectedException");
1167	>	}
1168	>	}
1169	>
1170	>	public abstract class CheckedInterruptedRunnable implements Runnable {
1171	>	protected abstract void realRun() throws Throwable;
1172	>
1173	>	public final void run() {
1174	>	try {
1175	>	realRun();
1176	>	threadShouldThrow("InterruptedException");
1177	>	} catch (InterruptedException success) {
1178	>	threadAssertFalse(Thread.interrupted());
1179	>	} catch (Throwable fail) {
1180	>	threadUnexpectedException(fail);
1181		}
1182		}
1183		}
1184
1185	<	public class SmallCallable implements Callable {
1186	<	public Object call() {
1185	>	public abstract class CheckedCallable<T> implements Callable<T> {
1186	>	protected abstract T realCall() throws Throwable;
1187	>
1188	>	public final T call() {
1189		try {
1190	<	Thread.sleep(SMALL_DELAY_MS);
1190	>	return realCall();
1191	>	} catch (Throwable fail) {
1192	>	threadUnexpectedException(fail);
1193	>	return null;
1194		}
1195	<	catch(Exception e) {
1196	<	threadFail("unexpectedException");
1195	>	}
1196	>	}
1197	>
1198	>	public abstract class CheckedInterruptedCallable<T>
1199	>	implements Callable<T> {
1200	>	protected abstract T realCall() throws Throwable;
1201	>
1202	>	public final T call() {
1203	>	try {
1204	>	T result = realCall();
1205	>	threadShouldThrow("InterruptedException");
1206	>	return result;
1207	>	} catch (InterruptedException success) {
1208	>	threadAssertFalse(Thread.interrupted());
1209	>	} catch (Throwable fail) {
1210	>	threadUnexpectedException(fail);
1211		}
1212	+	return null;
1213	+	}
1214	+	}
1215	+
1216	+	public static class NoOpRunnable implements Runnable {
1217	+	public void run() {}
1218	+	}
1219	+
1220	+	public static class NoOpCallable implements Callable {
1221	+	public Object call() { return Boolean.TRUE; }
1222	+	}
1223	+
1224	+	public static final String TEST_STRING = "a test string";
1225	+
1226	+	public static class StringTask implements Callable<String> {
1227	+	final String value;
1228	+	public StringTask() { this(TEST_STRING); }
1229	+	public StringTask(String value) { this.value = value; }
1230	+	public String call() { return value; }
1231	+	}
1232	+
1233	+	public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1234	+	return new CheckedCallable<String>() {
1235	+	protected String realCall() {
1236	+	try {
1237	+	latch.await();
1238	+	} catch (InterruptedException quittingTime) {}
1239	+	return TEST_STRING;
1240	+	}};
1241	+	}
1242	+
1243	+	public Runnable awaiter(final CountDownLatch latch) {
1244	+	return new CheckedRunnable() {
1245	+	public void realRun() throws InterruptedException {
1246	+	await(latch);
1247	+	}};
1248	+	}
1249	+
1250	+	public void await(CountDownLatch latch) {
1251	+	try {
1252	+	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1253	+	} catch (Throwable fail) {
1254	+	threadUnexpectedException(fail);
1255	+	}
1256	+	}
1257	+
1258	+	public void await(Semaphore semaphore) {
1259	+	try {
1260	+	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1261	+	} catch (Throwable fail) {
1262	+	threadUnexpectedException(fail);
1263	+	}
1264	+	}
1265	+
1266	+	//     /**
1267	+	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1268	+	//      */
1269	+	//     public void await(AtomicBoolean flag) {
1270	+	//         await(flag, LONG_DELAY_MS);
1271	+	//     }
1272	+
1273	+	//     /**
1274	+	//      * Spin-waits up to the specified timeout until flag becomes true.
1275	+	//      */
1276	+	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1277	+	//         long startTime = System.nanoTime();
1278	+	//         while (!flag.get()) {
1279	+	//             if (millisElapsedSince(startTime) > timeoutMillis)
1280	+	//                 throw new AssertionFailedError("timed out");
1281	+	//             Thread.yield();
1282	+	//         }
1283	+	//     }
1284	+
1285	+	public static class NPETask implements Callable<String> {
1286	+	public String call() { throw new NullPointerException(); }
1287	+	}
1288	+
1289	+	public static class CallableOne implements Callable<Integer> {
1290	+	public Integer call() { return one; }
1291	+	}
1292	+
1293	+	public class ShortRunnable extends CheckedRunnable {
1294	+	protected void realRun() throws Throwable {
1295	+	delay(SHORT_DELAY_MS);
1296	+	}
1297	+	}
1298	+
1299	+	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1300	+	protected void realRun() throws InterruptedException {
1301	+	delay(SHORT_DELAY_MS);
1302	+	}
1303	+	}
1304	+
1305	+	public class SmallRunnable extends CheckedRunnable {
1306	+	protected void realRun() throws Throwable {
1307	+	delay(SMALL_DELAY_MS);
1308	+	}
1309	+	}
1310	+
1311	+	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1312	+	protected void realRun() {
1313	+	try {
1314	+	delay(SMALL_DELAY_MS);
1315	+	} catch (InterruptedException ok) {}
1316	+	}
1317	+	}
1318	+
1319	+	public class SmallCallable extends CheckedCallable {
1320	+	protected Object realCall() throws InterruptedException {
1321	+	delay(SMALL_DELAY_MS);
1322		return Boolean.TRUE;
1323		}
1324		}
1325
1326	<	public class SmallInterruptedRunnable implements Runnable {
1326	>	public class MediumRunnable extends CheckedRunnable {
1327	>	protected void realRun() throws Throwable {
1328	>	delay(MEDIUM_DELAY_MS);
1329	>	}
1330	>	}
1331	>
1332	>	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1333	>	protected void realRun() throws InterruptedException {
1334	>	delay(MEDIUM_DELAY_MS);
1335	>	}
1336	>	}
1337	>
1338	>	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1339	>	return new CheckedRunnable() {
1340	>	protected void realRun() {
1341	>	try {
1342	>	delay(timeoutMillis);
1343	>	} catch (InterruptedException ok) {}
1344	>	}};
1345	>	}
1346	>
1347	>	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1348	>	protected void realRun() {
1349	>	try {
1350	>	delay(MEDIUM_DELAY_MS);
1351	>	} catch (InterruptedException ok) {}
1352	>	}
1353	>	}
1354	>
1355	>	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1356	>	protected void realRun() {
1357	>	try {
1358	>	delay(LONG_DELAY_MS);
1359	>	} catch (InterruptedException ok) {}
1360	>	}
1361	>	}
1362	>
1363	>	/**
1364	>	* For use as ThreadFactory in constructors
1365	>	*/
1366	>	public static class SimpleThreadFactory implements ThreadFactory {
1367	>	public Thread newThread(Runnable r) {
1368	>	return new Thread(r);
1369	>	}
1370	>	}
1371	>
1372	>	public interface TrackedRunnable extends Runnable {
1373	>	boolean isDone();
1374	>	}
1375	>
1376	>	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1377	>	return new TrackedRunnable() {
1378	>	private volatile boolean done = false;
1379	>	public boolean isDone() { return done; }
1380	>	public void run() {
1381	>	try {
1382	>	delay(timeoutMillis);
1383	>	done = true;
1384	>	} catch (InterruptedException ok) {}
1385	>	}
1386	>	};
1387	>	}
1388	>
1389	>	public static class TrackedShortRunnable implements Runnable {
1390	>	public volatile boolean done = false;
1391		public void run() {
1392		try {
1393	<	Thread.sleep(SMALL_DELAY_MS);
1394	<	threadFail("should throw IE");
1395	<	}
237	<	catch(InterruptedException success) {
238	<	}
1393	>	delay(SHORT_DELAY_MS);
1394	>	done = true;
1395	>	} catch (InterruptedException ok) {}
1396		}
1397		}
1398
1399	+	public static class TrackedSmallRunnable implements Runnable {
1400	+	public volatile boolean done = false;
1401	+	public void run() {
1402	+	try {
1403	+	delay(SMALL_DELAY_MS);
1404	+	done = true;
1405	+	} catch (InterruptedException ok) {}
1406	+	}
1407	+	}
1408
1409	<	public class MediumRunnable implements Runnable {
1409	>	public static class TrackedMediumRunnable implements Runnable {
1410	>	public volatile boolean done = false;
1411		public void run() {
1412		try {
1413	<	Thread.sleep(MEDIUM_DELAY_MS);
1414	<	}
1415	<	catch(Exception e) {
249	<	threadFail("unexpectedException");
250	<	}
1413	>	delay(MEDIUM_DELAY_MS);
1414	>	done = true;
1415	>	} catch (InterruptedException ok) {}
1416		}
1417		}
1418
1419	<	public class MediumInterruptedRunnable implements Runnable {
1419	>	public static class TrackedLongRunnable implements Runnable {
1420	>	public volatile boolean done = false;
1421		public void run() {
1422		try {
1423	<	Thread.sleep(MEDIUM_DELAY_MS);
1424	<	threadFail("should throw IE");
1423	>	delay(LONG_DELAY_MS);
1424	>	done = true;
1425	>	} catch (InterruptedException ok) {}
1426	>	}
1427	>	}
1428	>
1429	>	public static class TrackedNoOpRunnable implements Runnable {
1430	>	public volatile boolean done = false;
1431	>	public void run() {
1432	>	done = true;
1433	>	}
1434	>	}
1435	>
1436	>	public static class TrackedCallable implements Callable {
1437	>	public volatile boolean done = false;
1438	>	public Object call() {
1439	>	try {
1440	>	delay(SMALL_DELAY_MS);
1441	>	done = true;
1442	>	} catch (InterruptedException ok) {}
1443	>	return Boolean.TRUE;
1444	>	}
1445	>	}
1446	>
1447	>	/**
1448	>	* Analog of CheckedRunnable for RecursiveAction
1449	>	*/
1450	>	public abstract class CheckedRecursiveAction extends RecursiveAction {
1451	>	protected abstract void realCompute() throws Throwable;
1452	>
1453	>	@Override protected final void compute() {
1454	>	try {
1455	>	realCompute();
1456	>	} catch (Throwable fail) {
1457	>	threadUnexpectedException(fail);
1458		}
1459	<	catch(InterruptedException success) {
1459	>	}
1460	>	}
1461	>
1462	>	/**
1463	>	* Analog of CheckedCallable for RecursiveTask
1464	>	*/
1465	>	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1466	>	protected abstract T realCompute() throws Throwable;
1467	>
1468	>	@Override protected final T compute() {
1469	>	try {
1470	>	return realCompute();
1471	>	} catch (Throwable fail) {
1472	>	threadUnexpectedException(fail);
1473	>	return null;
1474		}
1475		}
1476		}
1477
1478	<	public class MediumPossiblyInterruptedRunnable implements Runnable {
1479	<	public void run() {
1478	>	/**
1479	>	* For use as RejectedExecutionHandler in constructors
1480	>	*/
1481	>	public static class NoOpREHandler implements RejectedExecutionHandler {
1482	>	public void rejectedExecution(Runnable r,
1483	>	ThreadPoolExecutor executor) {}
1484	>	}
1485	>
1486	>	/**
1487	>	* A CyclicBarrier that uses timed await and fails with
1488	>	* AssertionFailedErrors instead of throwing checked exceptions.
1489	>	*/
1490	>	public class CheckedBarrier extends CyclicBarrier {
1491	>	public CheckedBarrier(int parties) { super(parties); }
1492	>
1493	>	public int await() {
1494		try {
1495	<	Thread.sleep(MEDIUM_DELAY_MS);
1495	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1496	>	} catch (TimeoutException timedOut) {
1497	>	throw new AssertionFailedError("timed out");
1498	>	} catch (Exception fail) {
1499	>	AssertionFailedError afe =
1500	>	new AssertionFailedError("Unexpected exception: " + fail);
1501	>	afe.initCause(fail);
1502	>	throw afe;
1503		}
1504	<	catch(InterruptedException success) {
1504	>	}
1505	>	}
1506	>
1507	>	void checkEmpty(BlockingQueue q) {
1508	>	try {
1509	>	assertTrue(q.isEmpty());
1510	>	assertEquals(0, q.size());
1511	>	assertNull(q.peek());
1512	>	assertNull(q.poll());
1513	>	assertNull(q.poll(0, MILLISECONDS));
1514	>	assertEquals(q.toString(), "[]");
1515	>	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1516	>	assertFalse(q.iterator().hasNext());
1517	>	try {
1518	>	q.element();
1519	>	shouldThrow();
1520	>	} catch (NoSuchElementException success) {}
1521	>	try {
1522	>	q.iterator().next();
1523	>	shouldThrow();
1524	>	} catch (NoSuchElementException success) {}
1525	>	try {
1526	>	q.remove();
1527	>	shouldThrow();
1528	>	} catch (NoSuchElementException success) {}
1529	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1530	>	}
1531	>
1532	>	void assertSerialEquals(Object x, Object y) {
1533	>	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1534	>	}
1535	>
1536	>	void assertNotSerialEquals(Object x, Object y) {
1537	>	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1538	>	}
1539	>
1540	>	byte[] serialBytes(Object o) {
1541	>	try {
1542	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1543	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1544	>	oos.writeObject(o);
1545	>	oos.flush();
1546	>	oos.close();
1547	>	return bos.toByteArray();
1548	>	} catch (Throwable fail) {
1549	>	threadUnexpectedException(fail);
1550	>	return new byte[0];
1551	>	}
1552	>	}
1553	>
1554	>	@SuppressWarnings("unchecked")
1555	>	<T> T serialClone(T o) {
1556	>	try {
1557	>	ObjectInputStream ois = new ObjectInputStream
1558	>	(new ByteArrayInputStream(serialBytes(o)));
1559	>	T clone = (T) ois.readObject();
1560	>	assertSame(o.getClass(), clone.getClass());
1561	>	return clone;
1562	>	} catch (Throwable fail) {
1563	>	threadUnexpectedException(fail);
1564	>	return null;
1565	>	}
1566	>	}
1567	>
1568	>	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1569	>	Runnable... throwingActions) {
1570	>	for (Runnable throwingAction : throwingActions) {
1571	>	boolean threw = false;
1572	>	try { throwingAction.run(); }
1573	>	catch (Throwable t) {
1574	>	threw = true;
1575	>	if (!expectedExceptionClass.isInstance(t)) {
1576	>	AssertionFailedError afe =
1577	>	new AssertionFailedError
1578	>	("Expected " + expectedExceptionClass.getName() +
1579	>	", got " + t.getClass().getName());
1580	>	afe.initCause(t);
1581	>	threadUnexpectedException(afe);
1582	>	}
1583		}
1584	+	if (!threw)
1585	+	shouldThrow(expectedExceptionClass.getName());
1586		}
1587		}
1588	<
1588	>
1589	>	public void assertIteratorExhausted(Iterator<?> it) {
1590	>	try {
1591	>	it.next();
1592	>	shouldThrow();
1593	>	} catch (NoSuchElementException success) {}
1594	>	assertFalse(it.hasNext());
1595	>	}
1596		}

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