ViewVC Help

View File | Revision Log | Show Annotations | Download File | Root Listing

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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.3 by dl, Sat Sep 20 18:20:08 2003 UTC vs.
Revision 1.154 by jsr166, Sat Oct 3 19:39:16 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.management.ThreadMXBean;
19	+	import java.lang.reflect.Constructor;
20	+	import java.lang.reflect.Method;
21	+	import java.lang.reflect.Modifier;
22	+	import java.security.CodeSource;
23	+	import java.security.Permission;
24	+	import java.security.PermissionCollection;
25	+	import java.security.Permissions;
26	+	import java.security.Policy;
27	+	import java.security.ProtectionDomain;
28	+	import java.security.SecurityPermission;
29	+	import java.util.ArrayList;
30	+	import java.util.Arrays;
31	+	import java.util.Date;
32	+	import java.util.Enumeration;
33	+	import java.util.Iterator;
34	+	import java.util.List;
35	+	import java.util.NoSuchElementException;
36	+	import java.util.PropertyPermission;
37	+	import java.util.concurrent.BlockingQueue;
38	+	import java.util.concurrent.Callable;
39	+	import java.util.concurrent.CountDownLatch;
40	+	import java.util.concurrent.CyclicBarrier;
41	+	import java.util.concurrent.ExecutionException;
42	+	import java.util.concurrent.Executors;
43	+	import java.util.concurrent.ExecutorService;
44	+	import java.util.concurrent.ForkJoinPool;
45	+	import java.util.concurrent.Future;
46	+	import java.util.concurrent.RecursiveAction;
47	+	import java.util.concurrent.RecursiveTask;
48	+	import java.util.concurrent.RejectedExecutionHandler;
49	+	import java.util.concurrent.Semaphore;
50	+	import java.util.concurrent.ThreadFactory;
51	+	import java.util.concurrent.ThreadPoolExecutor;
52	+	import java.util.concurrent.TimeoutException;
53	+	import java.util.concurrent.atomic.AtomicReference;
54	+	import java.util.regex.Pattern;
55	+
56	+	import junit.framework.AssertionFailedError;
57	+	import junit.framework.Test;
58	+	import junit.framework.TestCase;
59	+	import junit.framework.TestResult;
60	+	import junit.framework.TestSuite;
61
62		/**
63	<	* Base class for JSR166 Junit TCK tests.  Defines some constants and
64	<	* utility methods, as well as a simple framework for helping to make
65	<	* sure that assertions failing in generated threads cause the
66	<	* associated test that generated them to itself fail (which JUnit doe
67	<	* not otherwise arrange).  The rules for creating such tests are:
63	>	* Base class for JSR166 Junit TCK tests.  Defines some constants,
64	>	* utility methods and classes, as well as a simple framework for
65	>	* helping to make sure that assertions failing in generated threads
66	>	* cause the associated test that generated them to itself fail (which
67	>	* JUnit does not otherwise arrange).  The rules for creating such
68	>	* tests are:
69		*
70		* <ol>
71		*
72	<	* <li> All assertions in code running in generated threads must use
73	<	* the forms {@link threadFail} , {@link threadAssertTrue} {@link
74	<	* threadAssertEquals}, or {@link threadAssertNull}, (not
75	<	* <tt>fail</tt>, <tt>assertTrue</tt>, etc.) It is OK (but not
72	>	* <li>All assertions in code running in generated threads must use
73	>	* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
74	>	* #threadAssertEquals}, or {@link #threadAssertNull}, (not
75	>	* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
76		* particularly recommended) for other code to use these forms too.
77		* Only the most typically used JUnit assertion methods are defined
78	<	* this way, but enough to live with.</li>
78	>	* this way, but enough to live with.
79		*
80	<	* <li> If you override {@link setUp} or {@link tearDown}, make sure
81	<	* to invoke <tt>super.setUp</tt> and <tt>super.tearDown</tt> within
80	>	* <li>If you override {@link #setUp} or {@link #tearDown}, make sure
81	>	* to invoke {@code super.setUp} and {@code super.tearDown} within
82		* them. These methods are used to clear and check for thread
83	<	* assertion failures.</li>
83	>	* assertion failures.
84		*
85	<	* <li>All delays and timeouts must use one of the constants {@link
86	<	* SHORT_DELAY_MS}, {@link SMALL_DELAY_MS}, {@link MEDIUM_DELAY_MS},
87	<	* {@link LONG_DELAY_MS}. The idea here is that a SHORT is always
88	<	* discriminatable from zero time, and always allows enough time for
89	<	* the small amounts of computation (creating a thread, calling a few
85	>	* <li>All delays and timeouts must use one of the constants {@code
86	>	* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
87	>	* {@code LONG_DELAY_MS}. The idea here is that a SHORT is always
88	>	* discriminable from zero time, and always allows enough time for the
89	>	* small amounts of computation (creating a thread, calling a few
90		* methods, etc) needed to reach a timeout point. Similarly, a SMALL
91		* is always discriminable as larger than SHORT and smaller than
92		* MEDIUM.  And so on. These constants are set to conservative values,
93		* but even so, if there is ever any doubt, they can all be increased
94	<	* in one spot to rerun tests on slower platforms</li>
94	>	* in one spot to rerun tests on slower platforms.
95		*
96	<	* <li> All threads generated must be joined inside each test case
97	<	* method (or <tt>fail</tt> to do so) before returning from the
98	<	* method. The {@link joinPool} method can be used to do this when
99	<	* using Executors.</li>
96	>	* <li>All threads generated must be joined inside each test case
97	>	* method (or {@code fail} to do so) before returning from the
98	>	* method. The {@code joinPool} method can be used to do this when
99	>	* using Executors.
100		*
101		* </ol>
102	+	*
103	+	* <p><b>Other notes</b>
104	+	* <ul>
105	+	*
106	+	* <li>Usually, there is one testcase method per JSR166 method
107	+	* covering "normal" operation, and then as many exception-testing
108	+	* methods as there are exceptions the method can throw. Sometimes
109	+	* there are multiple tests per JSR166 method when the different
110	+	* "normal" behaviors differ significantly. And sometimes testcases
111	+	* cover multiple methods when they cannot be tested in
112	+	* isolation.
113	+	*
114	+	* <li>The documentation style for testcases is to provide as javadoc
115	+	* a simple sentence or two describing the property that the testcase
116	+	* method purports to test. The javadocs do not say anything about how
117	+	* the property is tested. To find out, read the code.
118	+	*
119	+	* <li>These tests are "conformance tests", and do not attempt to
120	+	* test throughput, latency, scalability or other performance factors
121	+	* (see the separate "jtreg" tests for a set intended to check these
122	+	* for the most central aspects of functionality.) So, most tests use
123	+	* the smallest sensible numbers of threads, collection sizes, etc
124	+	* needed to check basic conformance.
125	+	*
126	+	* <li>The test classes currently do not declare inclusion in
127	+	* any particular package to simplify things for people integrating
128	+	* them in TCK test suites.
129	+	*
130	+	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
131	+	* runs all JSR166 unit tests.
132	+	*
133	+	* </ul>
134		*/
135		public class JSR166TestCase extends TestCase {
136	+	private static final boolean useSecurityManager =
137	+	Boolean.getBoolean("jsr166.useSecurityManager");
138	+
139	+	protected static final boolean expensiveTests =
140	+	Boolean.getBoolean("jsr166.expensiveTests");
141	+
142	+	/**
143	+	* If true, also run tests that are not part of the official tck
144	+	* because they test unspecified implementation details.
145	+	*/
146	+	protected static final boolean testImplementationDetails =
147	+	Boolean.getBoolean("jsr166.testImplementationDetails");
148	+
149	+	/**
150	+	* If true, report on stdout all "slow" tests, that is, ones that
151	+	* take more than profileThreshold milliseconds to execute.
152	+	*/
153	+	private static final boolean profileTests =
154	+	Boolean.getBoolean("jsr166.profileTests");
155	+
156	+	/**
157	+	* The number of milliseconds that tests are permitted for
158	+	* execution without being reported, when profileTests is set.
159	+	*/
160	+	private static final long profileThreshold =
161	+	Long.getLong("jsr166.profileThreshold", 100);
162	+
163	+	/**
164	+	* The number of repetitions per test (for tickling rare bugs).
165	+	*/
166	+	private static final int runsPerTest =
167	+	Integer.getInteger("jsr166.runsPerTest", 1);
168	+
169	+	/**
170	+	* The number of repetitions of the test suite (for finding leaks?).
171	+	*/
172	+	private static final int suiteRuns =
173	+	Integer.getInteger("jsr166.suiteRuns", 1);
174	+
175	+	public JSR166TestCase() { super(); }
176	+	public JSR166TestCase(String name) { super(name); }
177	+
178	+	/**
179	+	* A filter for tests to run, matching strings of the form
180	+	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
181	+	* Usefully combined with jsr166.runsPerTest.
182	+	*/
183	+	private static final Pattern methodFilter = methodFilter();
184	+
185	+	private static Pattern methodFilter() {
186	+	String regex = System.getProperty("jsr166.methodFilter");
187	+	return (regex == null) ? null : Pattern.compile(regex);
188	+	}
189	+
190	+	public void runBare() throws Throwable {
191	+	if (methodFilter == null
192	+	|| methodFilter.matcher(toString()).find())
193	+	super.runBare();
194	+	}
195	+
196	+	protected void runTest() throws Throwable {
197	+	for (int i = 0; i < runsPerTest; i++) {
198	+	if (profileTests)
199	+	runTestProfiled();
200	+	else
201	+	super.runTest();
202	+	}
203	+	}
204	+
205	+	protected void runTestProfiled() throws Throwable {
206	+	for (int i = 0; i < 2; i++) {
207	+	long startTime = System.nanoTime();
208	+	super.runTest();
209	+	long elapsedMillis = millisElapsedSince(startTime);
210	+	if (elapsedMillis < profileThreshold)
211	+	break;
212	+	// Never report first run of any test; treat it as a
213	+	// warmup run, notably to trigger all needed classloading,
214	+	if (i > 0)
215	+	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
216	+	}
217	+	}
218	+
219	+	/**
220	+	* Runs all JSR166 unit tests using junit.textui.TestRunner.
221	+	*/
222	+	public static void main(String[] args) {
223	+	main(suite(), args);
224	+	}
225	+
226	+	/**
227	+	* Runs all unit tests in the given test suite.
228	+	* Actual behavior influenced by jsr166.* system properties.
229	+	*/
230	+	static void main(Test suite, String[] args) {
231	+	if (useSecurityManager) {
232	+	System.err.println("Setting a permissive security manager");
233	+	Policy.setPolicy(permissivePolicy());
234	+	System.setSecurityManager(new SecurityManager());
235	+	}
236	+	for (int i = 0; i < suiteRuns; i++) {
237	+	TestResult result = junit.textui.TestRunner.run(suite);
238	+	if (!result.wasSuccessful())
239	+	System.exit(1);
240	+	System.gc();
241	+	System.runFinalization();
242	+	}
243	+	}
244	+
245	+	public static TestSuite newTestSuite(Object... suiteOrClasses) {
246	+	TestSuite suite = new TestSuite();
247	+	for (Object suiteOrClass : suiteOrClasses) {
248	+	if (suiteOrClass instanceof TestSuite)
249	+	suite.addTest((TestSuite) suiteOrClass);
250	+	else if (suiteOrClass instanceof Class)
251	+	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
252	+	else
253	+	throw new ClassCastException("not a test suite or class");
254	+	}
255	+	return suite;
256	+	}
257	+
258	+	public static void addNamedTestClasses(TestSuite suite,
259	+	String... testClassNames) {
260	+	for (String testClassName : testClassNames) {
261	+	try {
262	+	Class<?> testClass = Class.forName(testClassName);
263	+	Method m = testClass.getDeclaredMethod("suite",
264	+	new Class<?>[0]);
265	+	suite.addTest(newTestSuite((Test)m.invoke(null)));
266	+	} catch (Exception e) {
267	+	throw new Error("Missing test class", e);
268	+	}
269	+	}
270	+	}
271	+
272	+	public static final double JAVA_CLASS_VERSION;
273	+	public static final String JAVA_SPECIFICATION_VERSION;
274	+	static {
275	+	try {
276	+	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
277	+	new java.security.PrivilegedAction<Double>() {
278	+	public Double run() {
279	+	return Double.valueOf(System.getProperty("java.class.version"));}});
280	+	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
281	+	new java.security.PrivilegedAction<String>() {
282	+	public String run() {
283	+	return System.getProperty("java.specification.version");}});
284	+	} catch (Throwable t) {
285	+	throw new Error(t);
286	+	}
287	+	}
288	+
289	+	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
290	+	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
291	+	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
292	+	public static boolean atLeastJava9() {
293	+	return JAVA_CLASS_VERSION >= 53.0
294	+	// As of 2015-09, java9 still uses 52.0 class file version
295	+	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?(9|[0-9][0-9])$");
296	+	}
297	+	public static boolean atLeastJava10() {
298	+	return JAVA_CLASS_VERSION >= 54.0
299	+	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?[0-9][0-9]$");
300	+	}
301	+
302	+	/**
303	+	* Collects all JSR166 unit tests as one suite.
304	+	*/
305	+	public static Test suite() {
306	+	// Java7+ test classes
307	+	TestSuite suite = newTestSuite(
308	+	ForkJoinPoolTest.suite(),
309	+	ForkJoinTaskTest.suite(),
310	+	RecursiveActionTest.suite(),
311	+	RecursiveTaskTest.suite(),
312	+	LinkedTransferQueueTest.suite(),
313	+	PhaserTest.suite(),
314	+	ThreadLocalRandomTest.suite(),
315	+	AbstractExecutorServiceTest.suite(),
316	+	AbstractQueueTest.suite(),
317	+	AbstractQueuedSynchronizerTest.suite(),
318	+	AbstractQueuedLongSynchronizerTest.suite(),
319	+	ArrayBlockingQueueTest.suite(),
320	+	ArrayDequeTest.suite(),
321	+	AtomicBooleanTest.suite(),
322	+	AtomicIntegerArrayTest.suite(),
323	+	AtomicIntegerFieldUpdaterTest.suite(),
324	+	AtomicIntegerTest.suite(),
325	+	AtomicLongArrayTest.suite(),
326	+	AtomicLongFieldUpdaterTest.suite(),
327	+	AtomicLongTest.suite(),
328	+	AtomicMarkableReferenceTest.suite(),
329	+	AtomicReferenceArrayTest.suite(),
330	+	AtomicReferenceFieldUpdaterTest.suite(),
331	+	AtomicReferenceTest.suite(),
332	+	AtomicStampedReferenceTest.suite(),
333	+	ConcurrentHashMapTest.suite(),
334	+	ConcurrentLinkedDequeTest.suite(),
335	+	ConcurrentLinkedQueueTest.suite(),
336	+	ConcurrentSkipListMapTest.suite(),
337	+	ConcurrentSkipListSubMapTest.suite(),
338	+	ConcurrentSkipListSetTest.suite(),
339	+	ConcurrentSkipListSubSetTest.suite(),
340	+	CopyOnWriteArrayListTest.suite(),
341	+	CopyOnWriteArraySetTest.suite(),
342	+	CountDownLatchTest.suite(),
343	+	CyclicBarrierTest.suite(),
344	+	DelayQueueTest.suite(),
345	+	EntryTest.suite(),
346	+	ExchangerTest.suite(),
347	+	ExecutorsTest.suite(),
348	+	ExecutorCompletionServiceTest.suite(),
349	+	FutureTaskTest.suite(),
350	+	LinkedBlockingDequeTest.suite(),
351	+	LinkedBlockingQueueTest.suite(),
352	+	LinkedListTest.suite(),
353	+	LockSupportTest.suite(),
354	+	PriorityBlockingQueueTest.suite(),
355	+	PriorityQueueTest.suite(),
356	+	ReentrantLockTest.suite(),
357	+	ReentrantReadWriteLockTest.suite(),
358	+	ScheduledExecutorTest.suite(),
359	+	ScheduledExecutorSubclassTest.suite(),
360	+	SemaphoreTest.suite(),
361	+	SynchronousQueueTest.suite(),
362	+	SystemTest.suite(),
363	+	ThreadLocalTest.suite(),
364	+	ThreadPoolExecutorTest.suite(),
365	+	ThreadPoolExecutorSubclassTest.suite(),
366	+	ThreadTest.suite(),
367	+	TimeUnitTest.suite(),
368	+	TreeMapTest.suite(),
369	+	TreeSetTest.suite(),
370	+	TreeSubMapTest.suite(),
371	+	TreeSubSetTest.suite());
372	+
373	+	// Java8+ test classes
374	+	if (atLeastJava8()) {
375	+	String[] java8TestClassNames = {
376	+	"Atomic8Test",
377	+	"CompletableFutureTest",
378	+	"ConcurrentHashMap8Test",
379	+	"CountedCompleterTest",
380	+	"DoubleAccumulatorTest",
381	+	"DoubleAdderTest",
382	+	"ForkJoinPool8Test",
383	+	"ForkJoinTask8Test",
384	+	"LongAccumulatorTest",
385	+	"LongAdderTest",
386	+	"SplittableRandomTest",
387	+	"StampedLockTest",
388	+	"SubmissionPublisherTest",
389	+	"ThreadLocalRandom8Test",
390	+	};
391	+	addNamedTestClasses(suite, java8TestClassNames);
392	+	}
393	+
394	+	// Java9+ test classes
395	+	if (atLeastJava9()) {
396	+	String[] java9TestClassNames = {
397	+	// Currently empty, but expecting varhandle tests
398	+	};
399	+	addNamedTestClasses(suite, java9TestClassNames);
400	+	}
401	+
402	+	return suite;
403	+	}
404	+
405	+	/** Returns list of junit-style test method names in given class. */
406	+	public static ArrayList<String> testMethodNames(Class<?> testClass) {
407	+	Method[] methods = testClass.getDeclaredMethods();
408	+	ArrayList<String> names = new ArrayList<String>(methods.length);
409	+	for (Method method : methods) {
410	+	if (method.getName().startsWith("test")
411	+	&& Modifier.isPublic(method.getModifiers())
412	+	// method.getParameterCount() requires jdk8+
413	+	&& method.getParameterTypes().length == 0) {
414	+	names.add(method.getName());
415	+	}
416	+	}
417	+	return names;
418	+	}
419	+
420	+	/**
421	+	* Returns junit-style testSuite for the given test class, but
422	+	* parameterized by passing extra data to each test.
423	+	*/
424	+	public static <ExtraData> Test parameterizedTestSuite
425	+	(Class<? extends JSR166TestCase> testClass,
426	+	Class<ExtraData> dataClass,
427	+	ExtraData data) {
428	+	try {
429	+	TestSuite suite = new TestSuite();
430	+	Constructor c =
431	+	testClass.getDeclaredConstructor(dataClass, String.class);
432	+	for (String methodName : testMethodNames(testClass))
433	+	suite.addTest((Test) c.newInstance(data, methodName));
434	+	return suite;
435	+	} catch (Exception e) {
436	+	throw new Error(e);
437	+	}
438	+	}
439	+
440	+	/**
441	+	* Returns junit-style testSuite for the jdk8 extension of the
442	+	* given test class, but parameterized by passing extra data to
443	+	* each test.  Uses reflection to allow compilation in jdk7.
444	+	*/
445	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
446	+	(Class<? extends JSR166TestCase> testClass,
447	+	Class<ExtraData> dataClass,
448	+	ExtraData data) {
449	+	if (atLeastJava8()) {
450	+	String name = testClass.getName();
451	+	String name8 = name.replaceAll("Test$", "8Test");
452	+	if (name.equals(name8)) throw new Error(name);
453	+	try {
454	+	return (Test)
455	+	Class.forName(name8)
456	+	.getMethod("testSuite", new Class[] { dataClass })
457	+	.invoke(null, data);
458	+	} catch (Exception e) {
459	+	throw new Error(e);
460	+	}
461	+	} else {
462	+	return new TestSuite();
463	+	}
464	+
465	+	}
466	+
467	+	// Delays for timing-dependent tests, in milliseconds.
468
469		public static long SHORT_DELAY_MS;
470		public static long SMALL_DELAY_MS;
471		public static long MEDIUM_DELAY_MS;
472		public static long LONG_DELAY_MS;
473
61	–
474		/**
475	<	* Return the shortest timed delay. This could
476	<	* be reimplmented to use for example a Property.
477	<	*/
475	>	* Returns the shortest timed delay. This could
476	>	* be reimplemented to use for example a Property.
477	>	*/
478		protected long getShortDelay() {
479		return 50;
480		}
481
70	–
482		/**
483	<	* Set delays as multiples fo SHORT_DELAY.
483	>	* Sets delays as multiples of SHORT_DELAY.
484		*/
485	<	protected  void setDelays() {
485	>	protected void setDelays() {
486		SHORT_DELAY_MS = getShortDelay();
487	<	SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
487	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
488		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
489	<	LONG_DELAY_MS = SHORT_DELAY_MS * 50;
489	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
490		}
491
492		/**
493	<	* Flag set true if any threadAssert methods fail
493	>	* Returns a timeout in milliseconds to be used in tests that
494	>	* verify that operations block or time out.
495		*/
496	<	protected volatile boolean threadFailed;
496	>	long timeoutMillis() {
497	>	return SHORT_DELAY_MS / 4;
498	>	}
499	>
500	>	/**
501	>	* Returns a new Date instance representing a time at least
502	>	* delayMillis milliseconds in the future.
503	>	*/
504	>	Date delayedDate(long delayMillis) {
505	>	// Add 1 because currentTimeMillis is known to round into the past.
506	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
507	>	}
508
509		/**
510	<	* Initialize test to indicat that no thread assertions have failed
510	>	* The first exception encountered if any threadAssertXXX method fails.
511		*/
512	<	public void setUp() {
512	>	private final AtomicReference<Throwable> threadFailure
513	>	= new AtomicReference<Throwable>(null);
514	>
515	>	/**
516	>	* Records an exception so that it can be rethrown later in the test
517	>	* harness thread, triggering a test case failure.  Only the first
518	>	* failure is recorded; subsequent calls to this method from within
519	>	* the same test have no effect.
520	>	*/
521	>	public void threadRecordFailure(Throwable t) {
522	>	threadDump();
523	>	threadFailure.compareAndSet(null, t);
524	>	}
525	>
526	>	public void setUp() {
527		setDelays();
528	<	threadFailed = false;
528	>	}
529	>
530	>	void tearDownFail(String format, Object... args) {
531	>	String msg = toString() + ": " + String.format(format, args);
532	>	System.err.println(msg);
533	>	threadDump();
534	>	throw new AssertionFailedError(msg);
535	>	}
536	>
537	>	/**
538	>	* Extra checks that get done for all test cases.
539	>	*
540	>	* Triggers test case failure if any thread assertions have failed,
541	>	* by rethrowing, in the test harness thread, any exception recorded
542	>	* earlier by threadRecordFailure.
543	>	*
544	>	* Triggers test case failure if interrupt status is set in the main thread.
545	>	*/
546	>	public void tearDown() throws Exception {
547	>	Throwable t = threadFailure.getAndSet(null);
548	>	if (t != null) {
549	>	if (t instanceof Error)
550	>	throw (Error) t;
551	>	else if (t instanceof RuntimeException)
552	>	throw (RuntimeException) t;
553	>	else if (t instanceof Exception)
554	>	throw (Exception) t;
555	>	else {
556	>	AssertionFailedError afe =
557	>	new AssertionFailedError(t.toString());
558	>	afe.initCause(t);
559	>	throw afe;
560	>	}
561	>	}
562	>
563	>	if (Thread.interrupted())
564	>	tearDownFail("interrupt status set in main thread");
565	>
566	>	checkForkJoinPoolThreadLeaks();
567		}
568
569		/**
570	<	* Trigger test case failure if any thread assertions have failed
570	>	* Finds missing try { ... } finally { joinPool(e); }
571		*/
572	<	public void tearDown() {
573	<	assertFalse(threadFailed);
572	>	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
573	>	Thread[] survivors = new Thread[7];
574	>	int count = Thread.enumerate(survivors);
575	>	for (int i = 0; i < count; i++) {
576	>	Thread thread = survivors[i];
577	>	String name = thread.getName();
578	>	if (name.startsWith("ForkJoinPool-")) {
579	>	// give thread some time to terminate
580	>	thread.join(LONG_DELAY_MS);
581	>	if (thread.isAlive())
582	>	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
583	>	thread);
584	>	}
585	>	}
586	>
587	>	if (!ForkJoinPool.commonPool()
588	>	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
589	>	tearDownFail("ForkJoin common pool thread stuck");
590		}
591
592	+	/**
593	+	* Just like fail(reason), but additionally recording (using
594	+	* threadRecordFailure) any AssertionFailedError thrown, so that
595	+	* the current testcase will fail.
596	+	*/
597		public void threadFail(String reason) {
598	<	threadFailed = true;
599	<	fail(reason);
598	>	try {
599	>	fail(reason);
600	>	} catch (AssertionFailedError t) {
601	>	threadRecordFailure(t);
602	>	throw t;
603	>	}
604		}
605
606	+	/**
607	+	* Just like assertTrue(b), but additionally recording (using
608	+	* threadRecordFailure) any AssertionFailedError thrown, so that
609	+	* the current testcase will fail.
610	+	*/
611		public void threadAssertTrue(boolean b) {
612	<	if (!b) {
108	<	threadFailed = true;
612	>	try {
613		assertTrue(b);
614	+	} catch (AssertionFailedError t) {
615	+	threadRecordFailure(t);
616	+	throw t;
617		}
618		}
619	+
620	+	/**
621	+	* Just like assertFalse(b), but additionally recording (using
622	+	* threadRecordFailure) any AssertionFailedError thrown, so that
623	+	* the current testcase will fail.
624	+	*/
625		public void threadAssertFalse(boolean b) {
626	<	if (b) {
114	<	threadFailed = true;
626	>	try {
627		assertFalse(b);
628	+	} catch (AssertionFailedError t) {
629	+	threadRecordFailure(t);
630	+	throw t;
631		}
632		}
633	+
634	+	/**
635	+	* Just like assertNull(x), but additionally recording (using
636	+	* threadRecordFailure) any AssertionFailedError thrown, so that
637	+	* the current testcase will fail.
638	+	*/
639		public void threadAssertNull(Object x) {
640	<	if (x != null) {
120	<	threadFailed = true;
640	>	try {
641		assertNull(x);
642	+	} catch (AssertionFailedError t) {
643	+	threadRecordFailure(t);
644	+	throw t;
645		}
646		}
647	+
648	+	/**
649	+	* Just like assertEquals(x, y), but additionally recording (using
650	+	* threadRecordFailure) any AssertionFailedError thrown, so that
651	+	* the current testcase will fail.
652	+	*/
653		public void threadAssertEquals(long x, long y) {
654	<	if (x != y) {
126	<	threadFailed = true;
654	>	try {
655		assertEquals(x, y);
656	+	} catch (AssertionFailedError t) {
657	+	threadRecordFailure(t);
658	+	throw t;
659		}
660		}
661	+
662	+	/**
663	+	* Just like assertEquals(x, y), but additionally recording (using
664	+	* threadRecordFailure) any AssertionFailedError thrown, so that
665	+	* the current testcase will fail.
666	+	*/
667		public void threadAssertEquals(Object x, Object y) {
668	<	if (x != y && (x == null || !x.equals(y))) {
132	<	threadFailed = true;
668	>	try {
669		assertEquals(x, y);
670	+	} catch (AssertionFailedError fail) {
671	+	threadRecordFailure(fail);
672	+	throw fail;
673	+	} catch (Throwable fail) {
674	+	threadUnexpectedException(fail);
675		}
676		}
677
678	+	/**
679	+	* Just like assertSame(x, y), but additionally recording (using
680	+	* threadRecordFailure) any AssertionFailedError thrown, so that
681	+	* the current testcase will fail.
682	+	*/
683	+	public void threadAssertSame(Object x, Object y) {
684	+	try {
685	+	assertSame(x, y);
686	+	} catch (AssertionFailedError fail) {
687	+	threadRecordFailure(fail);
688	+	throw fail;
689	+	}
690	+	}
691	+
692	+	/**
693	+	* Calls threadFail with message "should throw exception".
694	+	*/
695		public void threadShouldThrow() {
696	<	threadFailed = true;
139	<	fail("should throw exception");
696	>	threadFail("should throw exception");
697		}
698
699	<	public void threadUnexpectedException() {
700	<	threadFailed = true;
701	<	fail("Unexpected exception");
699	>	/**
700	>	* Calls threadFail with message "should throw" + exceptionName.
701	>	*/
702	>	public void threadShouldThrow(String exceptionName) {
703	>	threadFail("should throw " + exceptionName);
704		}
705
706	+	/**
707	+	* Records the given exception using {@link #threadRecordFailure},
708	+	* then rethrows the exception, wrapping it in an
709	+	* AssertionFailedError if necessary.
710	+	*/
711	+	public void threadUnexpectedException(Throwable t) {
712	+	threadRecordFailure(t);
713	+	t.printStackTrace();
714	+	if (t instanceof RuntimeException)
715	+	throw (RuntimeException) t;
716	+	else if (t instanceof Error)
717	+	throw (Error) t;
718	+	else {
719	+	AssertionFailedError afe =
720	+	new AssertionFailedError("unexpected exception: " + t);
721	+	afe.initCause(t);
722	+	throw afe;
723	+	}
724	+	}
725
726		/**
727	<	* Wait out termination of a thread pool or fail doing so
727	>	* Delays, via Thread.sleep, for the given millisecond delay, but
728	>	* if the sleep is shorter than specified, may re-sleep or yield
729	>	* until time elapses.
730		*/
731	<	public void joinPool(ExecutorService exec) {
731	>	static void delay(long millis) throws InterruptedException {
732	>	long startTime = System.nanoTime();
733	>	long ns = millis * 1000 * 1000;
734	>	for (;;) {
735	>	if (millis > 0L)
736	>	Thread.sleep(millis);
737	>	else // too short to sleep
738	>	Thread.yield();
739	>	long d = ns - (System.nanoTime() - startTime);
740	>	if (d > 0L)
741	>	millis = d / (1000 * 1000);
742	>	else
743	>	break;
744	>	}
745	>	}
746	>
747	>	/**
748	>	* Allows use of try-with-resources with per-test thread pools.
749	>	*/
750	>	static class PoolCloser<T extends ExecutorService>
751	>	implements AutoCloseable {
752	>	public final T pool;
753	>	public PoolCloser(T pool) { this.pool = pool; }
754	>	public void close() { joinPool(pool); }
755	>	}
756	>
757	>	/**
758	>	* Waits out termination of a thread pool or fails doing so.
759	>	*/
760	>	static void joinPool(ExecutorService pool) {
761		try {
762	<	exec.shutdown();
763	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
764	<	} catch(InterruptedException ie) {
765	<	fail("Unexpected exception");
762	>	pool.shutdown();
763	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS))
764	>	fail("ExecutorService " + pool +
765	>	" did not terminate in a timely manner");
766	>	} catch (SecurityException ok) {
767	>	// Allowed in case test doesn't have privs
768	>	} catch (InterruptedException fail) {
769	>	fail("Unexpected InterruptedException");
770		}
771		}
772
773	<
773	>	/** Like Runnable, but with the freedom to throw anything */
774	>	interface Action { public void run() throws Throwable; }
775	>
776	>	/**
777	>	* Runs all the given actions in parallel, failing if any fail.
778	>	* Useful for running multiple variants of tests that are
779	>	* necessarily individually slow because they must block.
780	>	*/
781	>	void testInParallel(Action ... actions) {
782	>	try (PoolCloser<ExecutorService> poolCloser
783	>	= new PoolCloser<>(Executors.newCachedThreadPool())) {
784	>	ExecutorService pool = poolCloser.pool;
785	>	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
786	>	for (final Action action : actions)
787	>	futures.add(pool.submit(new CheckedRunnable() {
788	>	public void realRun() throws Throwable { action.run();}}));
789	>	for (Future<?> future : futures)
790	>	try {
791	>	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
792	>	} catch (ExecutionException ex) {
793	>	threadUnexpectedException(ex.getCause());
794	>	} catch (Exception ex) {
795	>	threadUnexpectedException(ex);
796	>	}
797	>	}
798	>	}
799	>
800	>	/**
801	>	* A debugging tool to print all stack traces, as jstack does.
802	>	* Uninteresting threads are filtered out.
803	>	*/
804	>	static void threadDump() {
805	>	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
806	>	System.err.println("------ stacktrace dump start ------");
807	>	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
808	>	String name = info.getThreadName();
809	>	if ("Signal Dispatcher".equals(name))
810	>	continue;
811	>	if ("Reference Handler".equals(name)
812	>	&& info.getLockName().startsWith("java.lang.ref.Reference$Lock"))
813	>	continue;
814	>	if ("Finalizer".equals(name)
815	>	&& info.getLockName().startsWith("java.lang.ref.ReferenceQueue$Lock"))
816	>	continue;
817	>	System.err.print(info);
818	>	}
819	>	System.err.println("------ stacktrace dump end ------");
820	>	}
821	>
822	>	/**
823	>	* Checks that thread does not terminate within the default
824	>	* millisecond delay of {@code timeoutMillis()}.
825	>	*/
826	>	void assertThreadStaysAlive(Thread thread) {
827	>	assertThreadStaysAlive(thread, timeoutMillis());
828	>	}
829	>
830	>	/**
831	>	* Checks that thread does not terminate within the given millisecond delay.
832	>	*/
833	>	void assertThreadStaysAlive(Thread thread, long millis) {
834	>	try {
835	>	// No need to optimize the failing case via Thread.join.
836	>	delay(millis);
837	>	assertTrue(thread.isAlive());
838	>	} catch (InterruptedException fail) {
839	>	fail("Unexpected InterruptedException");
840	>	}
841	>	}
842	>
843	>	/**
844	>	* Checks that the threads do not terminate within the default
845	>	* millisecond delay of {@code timeoutMillis()}.
846	>	*/
847	>	void assertThreadsStayAlive(Thread... threads) {
848	>	assertThreadsStayAlive(timeoutMillis(), threads);
849	>	}
850	>
851	>	/**
852	>	* Checks that the threads do not terminate within the given millisecond delay.
853	>	*/
854	>	void assertThreadsStayAlive(long millis, Thread... threads) {
855	>	try {
856	>	// No need to optimize the failing case via Thread.join.
857	>	delay(millis);
858	>	for (Thread thread : threads)
859	>	assertTrue(thread.isAlive());
860	>	} catch (InterruptedException fail) {
861	>	fail("Unexpected InterruptedException");
862	>	}
863	>	}
864	>
865	>	/**
866	>	* Checks that future.get times out, with the default timeout of
867	>	* {@code timeoutMillis()}.
868	>	*/
869	>	void assertFutureTimesOut(Future future) {
870	>	assertFutureTimesOut(future, timeoutMillis());
871	>	}
872	>
873	>	/**
874	>	* Checks that future.get times out, with the given millisecond timeout.
875	>	*/
876	>	void assertFutureTimesOut(Future future, long timeoutMillis) {
877	>	long startTime = System.nanoTime();
878	>	try {
879	>	future.get(timeoutMillis, MILLISECONDS);
880	>	shouldThrow();
881	>	} catch (TimeoutException success) {
882	>	} catch (Exception fail) {
883	>	threadUnexpectedException(fail);
884	>	} finally { future.cancel(true); }
885	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
886	>	}
887	>
888	>	/**
889	>	* Fails with message "should throw exception".
890	>	*/
891		public void shouldThrow() {
892		fail("Should throw exception");
893		}
894
895	<	public void unexpectedException() {
896	<	fail("Unexpected exception");
895	>	/**
896	>	* Fails with message "should throw " + exceptionName.
897	>	*/
898	>	public void shouldThrow(String exceptionName) {
899	>	fail("Should throw " + exceptionName);
900		}
901
169	–
902		/**
903		* The number of elements to place in collections, arrays, etc.
904		*/
#	Line 174 | Line 906 | public class JSR166TestCase extends Test
906
907		// Some convenient Integer constants
908
909	<	public static final Integer zero = new Integer(0);
910	<	public static final Integer one = new Integer(1);
911	<	public static final Integer two = new Integer(2);
912	<	public static final Integer three  = new Integer(3);
909	>	public static final Integer zero  = new Integer(0);
910	>	public static final Integer one   = new Integer(1);
911	>	public static final Integer two   = new Integer(2);
912	>	public static final Integer three = new Integer(3);
913		public static final Integer four  = new Integer(4);
914		public static final Integer five  = new Integer(5);
915	<	public static final Integer six = new Integer(6);
915	>	public static final Integer six   = new Integer(6);
916		public static final Integer seven = new Integer(7);
917		public static final Integer eight = new Integer(8);
918	<	public static final Integer nine = new Integer(9);
918	>	public static final Integer nine  = new Integer(9);
919		public static final Integer m1  = new Integer(-1);
920		public static final Integer m2  = new Integer(-2);
921		public static final Integer m3  = new Integer(-3);
922	<	public static final Integer m4 = new Integer(-4);
923	<	public static final Integer m5 = new Integer(-5);
922	>	public static final Integer m4  = new Integer(-4);
923	>	public static final Integer m5  = new Integer(-5);
924	>	public static final Integer m6  = new Integer(-6);
925		public static final Integer m10 = new Integer(-10);
926
927	+	/**
928	+	* Runs Runnable r with a security policy that permits precisely
929	+	* the specified permissions.  If there is no current security
930	+	* manager, the runnable is run twice, both with and without a
931	+	* security manager.  We require that any security manager permit
932	+	* getPolicy/setPolicy.
933	+	*/
934	+	public void runWithPermissions(Runnable r, Permission... permissions) {
935	+	SecurityManager sm = System.getSecurityManager();
936	+	if (sm == null) {
937	+	r.run();
938	+	}
939	+	runWithSecurityManagerWithPermissions(r, permissions);
940	+	}
941
942	<	// Some convenient Runnable classes
942	>	/**
943	>	* Runs Runnable r with a security policy that permits precisely
944	>	* the specified permissions.  If there is no current security
945	>	* manager, a temporary one is set for the duration of the
946	>	* Runnable.  We require that any security manager permit
947	>	* getPolicy/setPolicy.
948	>	*/
949	>	public void runWithSecurityManagerWithPermissions(Runnable r,
950	>	Permission... permissions) {
951	>	SecurityManager sm = System.getSecurityManager();
952	>	if (sm == null) {
953	>	Policy savedPolicy = Policy.getPolicy();
954	>	try {
955	>	Policy.setPolicy(permissivePolicy());
956	>	System.setSecurityManager(new SecurityManager());
957	>	runWithSecurityManagerWithPermissions(r, permissions);
958	>	} finally {
959	>	System.setSecurityManager(null);
960	>	Policy.setPolicy(savedPolicy);
961	>	}
962	>	} else {
963	>	Policy savedPolicy = Policy.getPolicy();
964	>	AdjustablePolicy policy = new AdjustablePolicy(permissions);
965	>	Policy.setPolicy(policy);
966
967	<	public static class NoOpRunnable implements Runnable {
968	<	public void run() {}
967	>	try {
968	>	r.run();
969	>	} finally {
970	>	policy.addPermission(new SecurityPermission("setPolicy"));
971	>	Policy.setPolicy(savedPolicy);
972	>	}
973	>	}
974		}
975
976	<	public static class NoOpCallable implements Callable {
977	<	public Object call() { return Boolean.TRUE; }
976	>	/**
977	>	* Runs a runnable without any permissions.
978	>	*/
979	>	public void runWithoutPermissions(Runnable r) {
980	>	runWithPermissions(r);
981		}
982
983	<	public class ShortRunnable implements Runnable {
984	<	public void run() {
985	<	try {
986	<	Thread.sleep(SHORT_DELAY_MS);
983	>	/**
984	>	* A security policy where new permissions can be dynamically added
985	>	* or all cleared.
986	>	*/
987	>	public static class AdjustablePolicy extends java.security.Policy {
988	>	Permissions perms = new Permissions();
989	>	AdjustablePolicy(Permission... permissions) {
990	>	for (Permission permission : permissions)
991	>	perms.add(permission);
992	>	}
993	>	void addPermission(Permission perm) { perms.add(perm); }
994	>	void clearPermissions() { perms = new Permissions(); }
995	>	public PermissionCollection getPermissions(CodeSource cs) {
996	>	return perms;
997	>	}
998	>	public PermissionCollection getPermissions(ProtectionDomain pd) {
999	>	return perms;
1000	>	}
1001	>	public boolean implies(ProtectionDomain pd, Permission p) {
1002	>	return perms.implies(p);
1003	>	}
1004	>	public void refresh() {}
1005	>	public String toString() {
1006	>	List<Permission> ps = new ArrayList<Permission>();
1007	>	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1008	>	ps.add(e.nextElement());
1009	>	return "AdjustablePolicy with permissions " + ps;
1010	>	}
1011	>	}
1012	>
1013	>	/**
1014	>	* Returns a policy containing all the permissions we ever need.
1015	>	*/
1016	>	public static Policy permissivePolicy() {
1017	>	return new AdjustablePolicy
1018	>	// Permissions j.u.c. needs directly
1019	>	(new RuntimePermission("modifyThread"),
1020	>	new RuntimePermission("getClassLoader"),
1021	>	new RuntimePermission("setContextClassLoader"),
1022	>	// Permissions needed to change permissions!
1023	>	new SecurityPermission("getPolicy"),
1024	>	new SecurityPermission("setPolicy"),
1025	>	new RuntimePermission("setSecurityManager"),
1026	>	// Permissions needed by the junit test harness
1027	>	new RuntimePermission("accessDeclaredMembers"),
1028	>	new PropertyPermission("*", "read"),
1029	>	new java.io.FilePermission("<<ALL FILES>>", "read"));
1030	>	}
1031	>
1032	>	/**
1033	>	* Sleeps until the given time has elapsed.
1034	>	* Throws AssertionFailedError if interrupted.
1035	>	*/
1036	>	void sleep(long millis) {
1037	>	try {
1038	>	delay(millis);
1039	>	} catch (InterruptedException fail) {
1040	>	AssertionFailedError afe =
1041	>	new AssertionFailedError("Unexpected InterruptedException");
1042	>	afe.initCause(fail);
1043	>	throw afe;
1044	>	}
1045	>	}
1046	>
1047	>	/**
1048	>	* Spin-waits up to the specified number of milliseconds for the given
1049	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1050	>	*/
1051	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1052	>	long startTime = System.nanoTime();
1053	>	for (;;) {
1054	>	Thread.State s = thread.getState();
1055	>	if (s == Thread.State.BLOCKED ||
1056	>	s == Thread.State.WAITING ||
1057	>	s == Thread.State.TIMED_WAITING)
1058	>	return;
1059	>	else if (s == Thread.State.TERMINATED)
1060	>	fail("Unexpected thread termination");
1061	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1062	>	threadAssertTrue(thread.isAlive());
1063	>	return;
1064		}
1065	<	catch(Exception e) {
1066	<	threadUnexpectedException();
1065	>	Thread.yield();
1066	>	}
1067	>	}
1068	>
1069	>	/**
1070	>	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
1071	>	* state: BLOCKED, WAITING, or TIMED_WAITING.
1072	>	*/
1073	>	void waitForThreadToEnterWaitState(Thread thread) {
1074	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
1075	>	}
1076	>
1077	>	/**
1078	>	* Returns the number of milliseconds since time given by
1079	>	* startNanoTime, which must have been previously returned from a
1080	>	* call to {@link System#nanoTime()}.
1081	>	*/
1082	>	static long millisElapsedSince(long startNanoTime) {
1083	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1084	>	}
1085	>
1086	>	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1087	>	//         long startTime = System.nanoTime();
1088	>	//         try {
1089	>	//             r.run();
1090	>	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1091	>	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1092	>	//             throw new AssertionFailedError("did not return promptly");
1093	>	//     }
1094	>
1095	>	//     void assertTerminatesPromptly(Runnable r) {
1096	>	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1097	>	//     }
1098	>
1099	>	/**
1100	>	* Checks that timed f.get() returns the expected value, and does not
1101	>	* wait for the timeout to elapse before returning.
1102	>	*/
1103	>	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1104	>	long startTime = System.nanoTime();
1105	>	try {
1106	>	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1107	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1108	>	if (millisElapsedSince(startTime) > timeoutMillis/2)
1109	>	throw new AssertionFailedError("timed get did not return promptly");
1110	>	}
1111	>
1112	>	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1113	>	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1114	>	}
1115	>
1116	>	/**
1117	>	* Returns a new started daemon Thread running the given runnable.
1118	>	*/
1119	>	Thread newStartedThread(Runnable runnable) {
1120	>	Thread t = new Thread(runnable);
1121	>	t.setDaemon(true);
1122	>	t.start();
1123	>	return t;
1124	>	}
1125	>
1126	>	/**
1127	>	* Waits for the specified time (in milliseconds) for the thread
1128	>	* to terminate (using {@link Thread#join(long)}), else interrupts
1129	>	* the thread (in the hope that it may terminate later) and fails.
1130	>	*/
1131	>	void awaitTermination(Thread t, long timeoutMillis) {
1132	>	try {
1133	>	t.join(timeoutMillis);
1134	>	} catch (InterruptedException fail) {
1135	>	threadUnexpectedException(fail);
1136	>	} finally {
1137	>	if (t.getState() != Thread.State.TERMINATED) {
1138	>	t.interrupt();
1139	>	fail("Test timed out");
1140		}
1141		}
1142		}
1143
1144	<	public class ShortInterruptedRunnable implements Runnable {
1145	<	public void run() {
1144	>	/**
1145	>	* Waits for LONG_DELAY_MS milliseconds for the thread to
1146	>	* terminate (using {@link Thread#join(long)}), else interrupts
1147	>	* the thread (in the hope that it may terminate later) and fails.
1148	>	*/
1149	>	void awaitTermination(Thread t) {
1150	>	awaitTermination(t, LONG_DELAY_MS);
1151	>	}
1152	>
1153	>	// Some convenient Runnable classes
1154	>
1155	>	public abstract class CheckedRunnable implements Runnable {
1156	>	protected abstract void realRun() throws Throwable;
1157	>
1158	>	public final void run() {
1159		try {
1160	<	Thread.sleep(SHORT_DELAY_MS);
1161	<	threadShouldThrow();
1160	>	realRun();
1161	>	} catch (Throwable fail) {
1162	>	threadUnexpectedException(fail);
1163		}
1164	<	catch(InterruptedException success) {
1164	>	}
1165	>	}
1166	>
1167	>	public abstract class RunnableShouldThrow implements Runnable {
1168	>	protected abstract void realRun() throws Throwable;
1169	>
1170	>	final Class<?> exceptionClass;
1171	>
1172	>	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
1173	>	this.exceptionClass = exceptionClass;
1174	>	}
1175	>
1176	>	public final void run() {
1177	>	try {
1178	>	realRun();
1179	>	threadShouldThrow(exceptionClass.getSimpleName());
1180	>	} catch (Throwable t) {
1181	>	if (! exceptionClass.isInstance(t))
1182	>	threadUnexpectedException(t);
1183		}
1184		}
1185		}
1186
1187	<	public class SmallRunnable implements Runnable {
1188	<	public void run() {
1187	>	public abstract class ThreadShouldThrow extends Thread {
1188	>	protected abstract void realRun() throws Throwable;
1189	>
1190	>	final Class<?> exceptionClass;
1191	>
1192	>	<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) {
1193	>	this.exceptionClass = exceptionClass;
1194	>	}
1195	>
1196	>	public final void run() {
1197		try {
1198	<	Thread.sleep(SMALL_DELAY_MS);
1198	>	realRun();
1199	>	threadShouldThrow(exceptionClass.getSimpleName());
1200	>	} catch (Throwable t) {
1201	>	if (! exceptionClass.isInstance(t))
1202	>	threadUnexpectedException(t);
1203		}
1204	<	catch(Exception e) {
1205	<	threadUnexpectedException();
1204	>	}
1205	>	}
1206	>
1207	>	public abstract class CheckedInterruptedRunnable implements Runnable {
1208	>	protected abstract void realRun() throws Throwable;
1209	>
1210	>	public final void run() {
1211	>	try {
1212	>	realRun();
1213	>	threadShouldThrow("InterruptedException");
1214	>	} catch (InterruptedException success) {
1215	>	threadAssertFalse(Thread.interrupted());
1216	>	} catch (Throwable fail) {
1217	>	threadUnexpectedException(fail);
1218		}
1219		}
1220		}
1221
1222	<	public class SmallCallable implements Callable {
1223	<	public Object call() {
1222	>	public abstract class CheckedCallable<T> implements Callable<T> {
1223	>	protected abstract T realCall() throws Throwable;
1224	>
1225	>	public final T call() {
1226		try {
1227	<	Thread.sleep(SMALL_DELAY_MS);
1227	>	return realCall();
1228	>	} catch (Throwable fail) {
1229	>	threadUnexpectedException(fail);
1230	>	return null;
1231		}
1232	<	catch(Exception e) {
1233	<	threadUnexpectedException();
1232	>	}
1233	>	}
1234	>
1235	>	public abstract class CheckedInterruptedCallable<T>
1236	>	implements Callable<T> {
1237	>	protected abstract T realCall() throws Throwable;
1238	>
1239	>	public final T call() {
1240	>	try {
1241	>	T result = realCall();
1242	>	threadShouldThrow("InterruptedException");
1243	>	return result;
1244	>	} catch (InterruptedException success) {
1245	>	threadAssertFalse(Thread.interrupted());
1246	>	} catch (Throwable fail) {
1247	>	threadUnexpectedException(fail);
1248		}
1249	+	return null;
1250	+	}
1251	+	}
1252	+
1253	+	public static class NoOpRunnable implements Runnable {
1254	+	public void run() {}
1255	+	}
1256	+
1257	+	public static class NoOpCallable implements Callable {
1258	+	public Object call() { return Boolean.TRUE; }
1259	+	}
1260	+
1261	+	public static final String TEST_STRING = "a test string";
1262	+
1263	+	public static class StringTask implements Callable<String> {
1264	+	final String value;
1265	+	public StringTask() { this(TEST_STRING); }
1266	+	public StringTask(String value) { this.value = value; }
1267	+	public String call() { return value; }
1268	+	}
1269	+
1270	+	public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1271	+	return new CheckedCallable<String>() {
1272	+	protected String realCall() {
1273	+	try {
1274	+	latch.await();
1275	+	} catch (InterruptedException quittingTime) {}
1276	+	return TEST_STRING;
1277	+	}};
1278	+	}
1279	+
1280	+	public Runnable countDowner(final CountDownLatch latch) {
1281	+	return new CheckedRunnable() {
1282	+	public void realRun() throws InterruptedException {
1283	+	latch.countDown();
1284	+	}};
1285	+	}
1286	+
1287	+	public Runnable awaiter(final CountDownLatch latch) {
1288	+	return new CheckedRunnable() {
1289	+	public void realRun() throws InterruptedException {
1290	+	await(latch);
1291	+	}};
1292	+	}
1293	+
1294	+	public void await(CountDownLatch latch) {
1295	+	try {
1296	+	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1297	+	} catch (Throwable fail) {
1298	+	threadUnexpectedException(fail);
1299	+	}
1300	+	}
1301	+
1302	+	public void await(Semaphore semaphore) {
1303	+	try {
1304	+	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1305	+	} catch (Throwable fail) {
1306	+	threadUnexpectedException(fail);
1307	+	}
1308	+	}
1309	+
1310	+	//     /**
1311	+	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1312	+	//      */
1313	+	//     public void await(AtomicBoolean flag) {
1314	+	//         await(flag, LONG_DELAY_MS);
1315	+	//     }
1316	+
1317	+	//     /**
1318	+	//      * Spin-waits up to the specified timeout until flag becomes true.
1319	+	//      */
1320	+	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1321	+	//         long startTime = System.nanoTime();
1322	+	//         while (!flag.get()) {
1323	+	//             if (millisElapsedSince(startTime) > timeoutMillis)
1324	+	//                 throw new AssertionFailedError("timed out");
1325	+	//             Thread.yield();
1326	+	//         }
1327	+	//     }
1328	+
1329	+	public static class NPETask implements Callable<String> {
1330	+	public String call() { throw new NullPointerException(); }
1331	+	}
1332	+
1333	+	public static class CallableOne implements Callable<Integer> {
1334	+	public Integer call() { return one; }
1335	+	}
1336	+
1337	+	public class ShortRunnable extends CheckedRunnable {
1338	+	protected void realRun() throws Throwable {
1339	+	delay(SHORT_DELAY_MS);
1340	+	}
1341	+	}
1342	+
1343	+	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1344	+	protected void realRun() throws InterruptedException {
1345	+	delay(SHORT_DELAY_MS);
1346	+	}
1347	+	}
1348	+
1349	+	public class SmallRunnable extends CheckedRunnable {
1350	+	protected void realRun() throws Throwable {
1351	+	delay(SMALL_DELAY_MS);
1352	+	}
1353	+	}
1354	+
1355	+	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1356	+	protected void realRun() {
1357	+	try {
1358	+	delay(SMALL_DELAY_MS);
1359	+	} catch (InterruptedException ok) {}
1360	+	}
1361	+	}
1362	+
1363	+	public class SmallCallable extends CheckedCallable {
1364	+	protected Object realCall() throws InterruptedException {
1365	+	delay(SMALL_DELAY_MS);
1366		return Boolean.TRUE;
1367		}
1368		}
1369
1370	<	public class SmallInterruptedRunnable implements Runnable {
1370	>	public class MediumRunnable extends CheckedRunnable {
1371	>	protected void realRun() throws Throwable {
1372	>	delay(MEDIUM_DELAY_MS);
1373	>	}
1374	>	}
1375	>
1376	>	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1377	>	protected void realRun() throws InterruptedException {
1378	>	delay(MEDIUM_DELAY_MS);
1379	>	}
1380	>	}
1381	>
1382	>	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1383	>	return new CheckedRunnable() {
1384	>	protected void realRun() {
1385	>	try {
1386	>	delay(timeoutMillis);
1387	>	} catch (InterruptedException ok) {}
1388	>	}};
1389	>	}
1390	>
1391	>	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1392	>	protected void realRun() {
1393	>	try {
1394	>	delay(MEDIUM_DELAY_MS);
1395	>	} catch (InterruptedException ok) {}
1396	>	}
1397	>	}
1398	>
1399	>	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1400	>	protected void realRun() {
1401	>	try {
1402	>	delay(LONG_DELAY_MS);
1403	>	} catch (InterruptedException ok) {}
1404	>	}
1405	>	}
1406	>
1407	>	/**
1408	>	* For use as ThreadFactory in constructors
1409	>	*/
1410	>	public static class SimpleThreadFactory implements ThreadFactory {
1411	>	public Thread newThread(Runnable r) {
1412	>	return new Thread(r);
1413	>	}
1414	>	}
1415	>
1416	>	public interface TrackedRunnable extends Runnable {
1417	>	boolean isDone();
1418	>	}
1419	>
1420	>	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1421	>	return new TrackedRunnable() {
1422	>	private volatile boolean done = false;
1423	>	public boolean isDone() { return done; }
1424	>	public void run() {
1425	>	try {
1426	>	delay(timeoutMillis);
1427	>	done = true;
1428	>	} catch (InterruptedException ok) {}
1429	>	}
1430	>	};
1431	>	}
1432	>
1433	>	public static class TrackedShortRunnable implements Runnable {
1434	>	public volatile boolean done = false;
1435		public void run() {
1436		try {
1437	<	Thread.sleep(SMALL_DELAY_MS);
1438	<	threadShouldThrow();
1439	<	}
256	<	catch(InterruptedException success) {
257	<	}
1437	>	delay(SHORT_DELAY_MS);
1438	>	done = true;
1439	>	} catch (InterruptedException ok) {}
1440		}
1441		}
1442
1443	+	public static class TrackedSmallRunnable implements Runnable {
1444	+	public volatile boolean done = false;
1445	+	public void run() {
1446	+	try {
1447	+	delay(SMALL_DELAY_MS);
1448	+	done = true;
1449	+	} catch (InterruptedException ok) {}
1450	+	}
1451	+	}
1452
1453	<	public class MediumRunnable implements Runnable {
1453	>	public static class TrackedMediumRunnable implements Runnable {
1454	>	public volatile boolean done = false;
1455		public void run() {
1456		try {
1457	<	Thread.sleep(MEDIUM_DELAY_MS);
1458	<	}
1459	<	catch(Exception e) {
1460	<	threadUnexpectedException();
1461	<	}
1457	>	delay(MEDIUM_DELAY_MS);
1458	>	done = true;
1459	>	} catch (InterruptedException ok) {}
1460	>	}
1461	>	}
1462	>
1463	>	public static class TrackedLongRunnable implements Runnable {
1464	>	public volatile boolean done = false;
1465	>	public void run() {
1466	>	try {
1467	>	delay(LONG_DELAY_MS);
1468	>	done = true;
1469	>	} catch (InterruptedException ok) {}
1470		}
1471		}
1472
1473	<	public class MediumInterruptedRunnable implements Runnable {
1473	>	public static class TrackedNoOpRunnable implements Runnable {
1474	>	public volatile boolean done = false;
1475		public void run() {
1476	+	done = true;
1477	+	}
1478	+	}
1479	+
1480	+	public static class TrackedCallable implements Callable {
1481	+	public volatile boolean done = false;
1482	+	public Object call() {
1483		try {
1484	<	Thread.sleep(MEDIUM_DELAY_MS);
1485	<	threadShouldThrow();
1484	>	delay(SMALL_DELAY_MS);
1485	>	done = true;
1486	>	} catch (InterruptedException ok) {}
1487	>	return Boolean.TRUE;
1488	>	}
1489	>	}
1490	>
1491	>	/**
1492	>	* Analog of CheckedRunnable for RecursiveAction
1493	>	*/
1494	>	public abstract class CheckedRecursiveAction extends RecursiveAction {
1495	>	protected abstract void realCompute() throws Throwable;
1496	>
1497	>	@Override protected final void compute() {
1498	>	try {
1499	>	realCompute();
1500	>	} catch (Throwable fail) {
1501	>	threadUnexpectedException(fail);
1502		}
1503	<	catch(InterruptedException success) {
1503	>	}
1504	>	}
1505	>
1506	>	/**
1507	>	* Analog of CheckedCallable for RecursiveTask
1508	>	*/
1509	>	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1510	>	protected abstract T realCompute() throws Throwable;
1511	>
1512	>	@Override protected final T compute() {
1513	>	try {
1514	>	return realCompute();
1515	>	} catch (Throwable fail) {
1516	>	threadUnexpectedException(fail);
1517	>	return null;
1518		}
1519		}
1520		}
1521
1522	<	public class MediumPossiblyInterruptedRunnable implements Runnable {
1523	<	public void run() {
1522	>	/**
1523	>	* For use as RejectedExecutionHandler in constructors
1524	>	*/
1525	>	public static class NoOpREHandler implements RejectedExecutionHandler {
1526	>	public void rejectedExecution(Runnable r,
1527	>	ThreadPoolExecutor executor) {}
1528	>	}
1529	>
1530	>	/**
1531	>	* A CyclicBarrier that uses timed await and fails with
1532	>	* AssertionFailedErrors instead of throwing checked exceptions.
1533	>	*/
1534	>	public class CheckedBarrier extends CyclicBarrier {
1535	>	public CheckedBarrier(int parties) { super(parties); }
1536	>
1537	>	public int await() {
1538		try {
1539	<	Thread.sleep(MEDIUM_DELAY_MS);
1539	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1540	>	} catch (TimeoutException timedOut) {
1541	>	throw new AssertionFailedError("timed out");
1542	>	} catch (Exception fail) {
1543	>	AssertionFailedError afe =
1544	>	new AssertionFailedError("Unexpected exception: " + fail);
1545	>	afe.initCause(fail);
1546	>	throw afe;
1547		}
1548	<	catch(InterruptedException success) {
1548	>	}
1549	>	}
1550	>
1551	>	void checkEmpty(BlockingQueue q) {
1552	>	try {
1553	>	assertTrue(q.isEmpty());
1554	>	assertEquals(0, q.size());
1555	>	assertNull(q.peek());
1556	>	assertNull(q.poll());
1557	>	assertNull(q.poll(0, MILLISECONDS));
1558	>	assertEquals(q.toString(), "[]");
1559	>	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1560	>	assertFalse(q.iterator().hasNext());
1561	>	try {
1562	>	q.element();
1563	>	shouldThrow();
1564	>	} catch (NoSuchElementException success) {}
1565	>	try {
1566	>	q.iterator().next();
1567	>	shouldThrow();
1568	>	} catch (NoSuchElementException success) {}
1569	>	try {
1570	>	q.remove();
1571	>	shouldThrow();
1572	>	} catch (NoSuchElementException success) {}
1573	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1574	>	}
1575	>
1576	>	void assertSerialEquals(Object x, Object y) {
1577	>	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1578	>	}
1579	>
1580	>	void assertNotSerialEquals(Object x, Object y) {
1581	>	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1582	>	}
1583	>
1584	>	byte[] serialBytes(Object o) {
1585	>	try {
1586	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1587	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1588	>	oos.writeObject(o);
1589	>	oos.flush();
1590	>	oos.close();
1591	>	return bos.toByteArray();
1592	>	} catch (Throwable fail) {
1593	>	threadUnexpectedException(fail);
1594	>	return new byte[0];
1595	>	}
1596	>	}
1597	>
1598	>	@SuppressWarnings("unchecked")
1599	>	<T> T serialClone(T o) {
1600	>	try {
1601	>	ObjectInputStream ois = new ObjectInputStream
1602	>	(new ByteArrayInputStream(serialBytes(o)));
1603	>	T clone = (T) ois.readObject();
1604	>	assertSame(o.getClass(), clone.getClass());
1605	>	return clone;
1606	>	} catch (Throwable fail) {
1607	>	threadUnexpectedException(fail);
1608	>	return null;
1609	>	}
1610	>	}
1611	>
1612	>	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1613	>	Runnable... throwingActions) {
1614	>	for (Runnable throwingAction : throwingActions) {
1615	>	boolean threw = false;
1616	>	try { throwingAction.run(); }
1617	>	catch (Throwable t) {
1618	>	threw = true;
1619	>	if (!expectedExceptionClass.isInstance(t)) {
1620	>	AssertionFailedError afe =
1621	>	new AssertionFailedError
1622	>	("Expected " + expectedExceptionClass.getName() +
1623	>	", got " + t.getClass().getName());
1624	>	afe.initCause(t);
1625	>	threadUnexpectedException(afe);
1626	>	}
1627		}
1628	+	if (!threw)
1629	+	shouldThrow(expectedExceptionClass.getName());
1630		}
1631		}
1632	<
1632	>
1633	>	public void assertIteratorExhausted(Iterator<?> it) {
1634	>	try {
1635	>	it.next();
1636	>	shouldThrow();
1637	>	} catch (NoSuchElementException success) {}
1638	>	assertFalse(it.hasNext());
1639	>	}
1640		}

Diff Legend

–	Removed lines
+	Added lines
<	Changed lines
>	Changed lines