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Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.18 by dl, Fri Jan 9 15:39:10 2004 UTC vs.
Revision 1.136 by jsr166, Fri Sep 4 18:16:28 2015 UTC

#	Line 1 | Line 1
1		/*
2		* Written by Doug Lea with assistance from members of JCP JSR-166
3		* Expert Group and released to the public domain, as explained at
4	<	* http://creativecommons.org/licenses/publicdomain
5	<	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	<	* Pat Fisher, Mike Judd.
4	>	* http://creativecommons.org/publicdomain/zero/1.0/
5	>	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	>	* Pat Fisher, Mike Judd.
7		*/
8
9	<	import junit.framework.*;
10	<	import java.util.*;
11	<	import java.util.concurrent.*;
12	<	import java.io.*;
13	<	import java.security.*;
9	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
10	>	import static java.util.concurrent.TimeUnit.NANOSECONDS;
11	>
12	>	import java.io.ByteArrayInputStream;
13	>	import java.io.ByteArrayOutputStream;
14	>	import java.io.ObjectInputStream;
15	>	import java.io.ObjectOutputStream;
16	>	import java.lang.management.ManagementFactory;
17	>	import java.lang.management.ThreadInfo;
18	>	import java.lang.reflect.Constructor;
19	>	import java.lang.reflect.Method;
20	>	import java.lang.reflect.Modifier;
21	>	import java.security.CodeSource;
22	>	import java.security.Permission;
23	>	import java.security.PermissionCollection;
24	>	import java.security.Permissions;
25	>	import java.security.Policy;
26	>	import java.security.ProtectionDomain;
27	>	import java.security.SecurityPermission;
28	>	import java.util.ArrayList;
29	>	import java.util.Arrays;
30	>	import java.util.Date;
31	>	import java.util.Enumeration;
32	>	import java.util.Iterator;
33	>	import java.util.List;
34	>	import java.util.NoSuchElementException;
35	>	import java.util.PropertyPermission;
36	>	import java.util.concurrent.BlockingQueue;
37	>	import java.util.concurrent.Callable;
38	>	import java.util.concurrent.CountDownLatch;
39	>	import java.util.concurrent.CyclicBarrier;
40	>	import java.util.concurrent.ExecutorService;
41	>	import java.util.concurrent.Future;
42	>	import java.util.concurrent.RecursiveAction;
43	>	import java.util.concurrent.RecursiveTask;
44	>	import java.util.concurrent.RejectedExecutionHandler;
45	>	import java.util.concurrent.Semaphore;
46	>	import java.util.concurrent.ThreadFactory;
47	>	import java.util.concurrent.ThreadPoolExecutor;
48	>	import java.util.concurrent.TimeoutException;
49	>	import java.util.concurrent.atomic.AtomicReference;
50	>	import java.util.regex.Pattern;
51	>
52	>	import junit.framework.AssertionFailedError;
53	>	import junit.framework.Test;
54	>	import junit.framework.TestCase;
55	>	import junit.framework.TestResult;
56	>	import junit.framework.TestSuite;
57
58		/**
59		* Base class for JSR166 Junit TCK tests.  Defines some constants,
60		* utility methods and classes, as well as a simple framework for
61		* helping to make sure that assertions failing in generated threads
62		* cause the associated test that generated them to itself fail (which
63	<	* JUnit doe not otherwise arrange).  The rules for creating such
63	>	* JUnit does not otherwise arrange).  The rules for creating such
64		* tests are:
65		*
66		* <ol>
67		*
68		* <li> All assertions in code running in generated threads must use
69	<	* the forms {@link #threadFail} , {@link #threadAssertTrue} {@link
69	>	* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
70		* #threadAssertEquals}, or {@link #threadAssertNull}, (not
71	<	* <tt>fail</tt>, <tt>assertTrue</tt>, etc.) It is OK (but not
71	>	* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
72		* particularly recommended) for other code to use these forms too.
73		* Only the most typically used JUnit assertion methods are defined
74		* this way, but enough to live with.</li>
75		*
76		* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
77	<	* to invoke <tt>super.setUp</tt> and <tt>super.tearDown</tt> within
77	>	* to invoke {@code super.setUp} and {@code super.tearDown} within
78		* them. These methods are used to clear and check for thread
79		* assertion failures.</li>
80		*
81	<	* <li>All delays and timeouts must use one of the constants <tt>
82	<	* SHORT_DELAY_MS</tt>, <tt> SMALL_DELAY_MS</tt>, <tt> MEDIUM_DELAY_MS</tt>,
83	<	* <tt> LONG_DELAY_MS</tt>. The idea here is that a SHORT is always
81	>	* <li>All delays and timeouts must use one of the constants {@code
82	>	* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
83	>	* {@code LONG_DELAY_MS}. The idea here is that a SHORT is always
84		* discriminable from zero time, and always allows enough time for the
85		* small amounts of computation (creating a thread, calling a few
86		* methods, etc) needed to reach a timeout point. Similarly, a SMALL
87		* is always discriminable as larger than SHORT and smaller than
88		* MEDIUM.  And so on. These constants are set to conservative values,
89		* but even so, if there is ever any doubt, they can all be increased
90	<	* in one spot to rerun tests on slower platforms</li>
90	>	* in one spot to rerun tests on slower platforms.</li>
91		*
92		* <li> All threads generated must be joined inside each test case
93	<	* method (or <tt>fail</tt> to do so) before returning from the
94	<	* method. The <tt> joinPool</tt> method can be used to do this when
93	>	* method (or {@code fail} to do so) before returning from the
94	>	* method. The {@code joinPool} method can be used to do this when
95		* using Executors.</li>
96		*
97		* </ol>
98		*
99	<	* <p> <b>Other notes</b>
99	>	* <p><b>Other notes</b>
100		* <ul>
101		*
102		* <li> Usually, there is one testcase method per JSR166 method
#	Line 63 | Line 106 | import java.security.*;
106		* "normal" behaviors differ significantly. And sometimes testcases
107		* cover multiple methods when they cannot be tested in
108		* isolation.</li>
109	<	*
109	>	*
110		* <li> The documentation style for testcases is to provide as javadoc
111		* a simple sentence or two describing the property that the testcase
112		* method purports to test. The javadocs do not say anything about how
#	Line 80 | Line 123 | import java.security.*;
123		* any particular package to simplify things for people integrating
124		* them in TCK test suites.</li>
125		*
126	<	* <li> As a convenience, the <tt>main</tt> of this class (JSR166TestCase)
126	>	* <li> As a convenience, the {@code main} of this class (JSR166TestCase)
127		* runs all JSR166 unit tests.</li>
128		*
129		* </ul>
130		*/
131		public class JSR166TestCase extends TestCase {
132	+	private static final boolean useSecurityManager =
133	+	Boolean.getBoolean("jsr166.useSecurityManager");
134	+
135	+	protected static final boolean expensiveTests =
136	+	Boolean.getBoolean("jsr166.expensiveTests");
137	+
138	+	/**
139	+	* If true, also run tests that are not part of the official tck
140	+	* because they test unspecified implementation details.
141	+	*/
142	+	protected static final boolean testImplementationDetails =
143	+	Boolean.getBoolean("jsr166.testImplementationDetails");
144	+
145	+	/**
146	+	* If true, report on stdout all "slow" tests, that is, ones that
147	+	* take more than profileThreshold milliseconds to execute.
148	+	*/
149	+	private static final boolean profileTests =
150	+	Boolean.getBoolean("jsr166.profileTests");
151	+
152	+	/**
153	+	* The number of milliseconds that tests are permitted for
154	+	* execution without being reported, when profileTests is set.
155	+	*/
156	+	private static final long profileThreshold =
157	+	Long.getLong("jsr166.profileThreshold", 100);
158	+
159	+	/**
160	+	* The number of repetitions per test (for tickling rare bugs).
161	+	*/
162	+	private static final int runsPerTest =
163	+	Integer.getInteger("jsr166.runsPerTest", 1);
164	+
165	+	/**
166	+	* The number of repetitions of the test suite (for finding leaks?).
167	+	*/
168	+	private static final int suiteRuns =
169	+	Integer.getInteger("jsr166.suiteRuns", 1);
170	+
171	+	public JSR166TestCase() { super(); }
172	+	public JSR166TestCase(String name) { super(name); }
173	+
174	+	/**
175	+	* A filter for tests to run, matching strings of the form
176	+	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
177	+	* Usefully combined with jsr166.runsPerTest.
178	+	*/
179	+	private static final Pattern methodFilter = methodFilter();
180	+
181	+	private static Pattern methodFilter() {
182	+	String regex = System.getProperty("jsr166.methodFilter");
183	+	return (regex == null) ? null : Pattern.compile(regex);
184	+	}
185	+
186	+	protected void runTest() throws Throwable {
187	+	if (methodFilter == null
188	+	|| methodFilter.matcher(toString()).find()) {
189	+	for (int i = 0; i < runsPerTest; i++) {
190	+	if (profileTests)
191	+	runTestProfiled();
192	+	else
193	+	super.runTest();
194	+	}
195	+	}
196	+	}
197	+
198	+	protected void runTestProfiled() throws Throwable {
199	+	// Warmup run, notably to trigger all needed classloading.
200	+	super.runTest();
201	+	long t0 = System.nanoTime();
202	+	try {
203	+	super.runTest();
204	+	} finally {
205	+	long elapsedMillis = millisElapsedSince(t0);
206	+	if (elapsedMillis >= profileThreshold)
207	+	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
208	+	}
209	+	}
210	+
211		/**
212	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
213	<	*/
214	<	public static void main (String[] args) {
215	<	int iters = 1;
216	<	if (args.length > 0)
217	<	iters = Integer.parseInt(args[0]);
218	<	Test s = suite();
219	<	for (int i = 0; i < iters; ++i)
220	<	junit.textui.TestRunner.run (s);
212	>	* Runs all JSR166 unit tests using junit.textui.TestRunner.
213	>	*/
214	>	public static void main(String[] args) {
215	>	main(suite(), args);
216	>	}
217	>
218	>	/**
219	>	* Runs all unit tests in the given test suite.
220	>	* Actual behavior influenced by jsr166.* system properties.
221	>	*/
222	>	static void main(Test suite, String[] args) {
223	>	if (useSecurityManager) {
224	>	System.err.println("Setting a permissive security manager");
225	>	Policy.setPolicy(permissivePolicy());
226	>	System.setSecurityManager(new SecurityManager());
227	>	}
228	>	for (int i = 0; i < suiteRuns; i++) {
229	>	TestResult result = junit.textui.TestRunner.run(suite);
230	>	if (!result.wasSuccessful())
231	>	System.exit(1);
232	>	System.gc();
233	>	System.runFinalization();
234	>	}
235	>	}
236	>
237	>	public static TestSuite newTestSuite(Object... suiteOrClasses) {
238	>	TestSuite suite = new TestSuite();
239	>	for (Object suiteOrClass : suiteOrClasses) {
240	>	if (suiteOrClass instanceof TestSuite)
241	>	suite.addTest((TestSuite) suiteOrClass);
242	>	else if (suiteOrClass instanceof Class)
243	>	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
244	>	else
245	>	throw new ClassCastException("not a test suite or class");
246	>	}
247	>	return suite;
248	>	}
249	>
250	>	public static void addNamedTestClasses(TestSuite suite,
251	>	String... testClassNames) {
252	>	for (String testClassName : testClassNames) {
253	>	try {
254	>	Class<?> testClass = Class.forName(testClassName);
255	>	Method m = testClass.getDeclaredMethod("suite",
256	>	new Class<?>[0]);
257	>	suite.addTest(newTestSuite((Test)m.invoke(null)));
258	>	} catch (Exception e) {
259	>	throw new Error("Missing test class", e);
260	>	}
261	>	}
262	>	}
263	>
264	>	public static final double JAVA_CLASS_VERSION;
265	>	public static final String JAVA_SPECIFICATION_VERSION;
266	>	static {
267	>	try {
268	>	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
269	>	new java.security.PrivilegedAction<Double>() {
270	>	public Double run() {
271	>	return Double.valueOf(System.getProperty("java.class.version"));}});
272	>	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
273	>	new java.security.PrivilegedAction<String>() {
274	>	public String run() {
275	>	return System.getProperty("java.specification.version");}});
276	>	} catch (Throwable t) {
277	>	throw new Error(t);
278	>	}
279	>	}
280	>
281	>	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
282	>	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
283	>	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
284	>	public static boolean atLeastJava9() {
285	>	// As of 2015-09, java9 still uses 52.0 class file version
286	>	return JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?(9|[0-9][0-9])$");
287	>	}
288	>	// public static boolean atLeastJava9() { return JAVA_CLASS_VERSION >= 53.0; }
289	>	public static boolean atLeastJava10() {
290	>	return JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?[0-9][0-9]$");
291		}
292
293		/**
294	<	* Collects all JSR166 unit tests as one suite
295	<	*/
296	<	public static Test suite ( ) {
297	<	TestSuite suite = new TestSuite("JSR166 Unit Tests");
298	<
299	<	suite.addTest(new TestSuite(AbstractExecutorServiceTest.class));
300	<	suite.addTest(new TestSuite(AbstractQueuedSynchronizerTest.class));
301	<	suite.addTest(new TestSuite(ArrayBlockingQueueTest.class));
302	<	suite.addTest(new TestSuite(AtomicBooleanTest.class));
303	<	suite.addTest(new TestSuite(AtomicIntegerArrayTest.class));
304	<	suite.addTest(new TestSuite(AtomicIntegerFieldUpdaterTest.class));
305	<	suite.addTest(new TestSuite(AtomicIntegerTest.class));
306	<	suite.addTest(new TestSuite(AtomicLongArrayTest.class));
307	<	suite.addTest(new TestSuite(AtomicLongFieldUpdaterTest.class));
308	<	suite.addTest(new TestSuite(AtomicLongTest.class));
309	<	suite.addTest(new TestSuite(AtomicMarkableReferenceTest.class));
310	<	suite.addTest(new TestSuite(AtomicReferenceArrayTest.class));
311	<	suite.addTest(new TestSuite(AtomicReferenceFieldUpdaterTest.class));
312	<	suite.addTest(new TestSuite(AtomicReferenceTest.class));
313	<	suite.addTest(new TestSuite(AtomicStampedReferenceTest.class));
314	<	suite.addTest(new TestSuite(ConcurrentHashMapTest.class));
315	<	suite.addTest(new TestSuite(ConcurrentLinkedQueueTest.class));
316	<	suite.addTest(new TestSuite(CopyOnWriteArrayListTest.class));
317	<	suite.addTest(new TestSuite(CopyOnWriteArraySetTest.class));
318	<	suite.addTest(new TestSuite(CountDownLatchTest.class));
319	<	suite.addTest(new TestSuite(CyclicBarrierTest.class));
320	<	suite.addTest(new TestSuite(DelayQueueTest.class));
321	<	suite.addTest(new TestSuite(ExchangerTest.class));
322	<	suite.addTest(new TestSuite(ExecutorsTest.class));
323	<	suite.addTest(new TestSuite(ExecutorCompletionServiceTest.class));
324	<	suite.addTest(new TestSuite(FutureTaskTest.class));
325	<	suite.addTest(new TestSuite(LinkedBlockingQueueTest.class));
326	<	suite.addTest(new TestSuite(LinkedListTest.class));
327	<	suite.addTest(new TestSuite(LockSupportTest.class));
328	<	suite.addTest(new TestSuite(PriorityBlockingQueueTest.class));
329	<	suite.addTest(new TestSuite(PriorityQueueTest.class));
330	<	suite.addTest(new TestSuite(ReentrantLockTest.class));
331	<	suite.addTest(new TestSuite(ReentrantReadWriteLockTest.class));
332	<	suite.addTest(new TestSuite(ScheduledExecutorTest.class));
333	<	suite.addTest(new TestSuite(SemaphoreTest.class));
334	<	suite.addTest(new TestSuite(SynchronousQueueTest.class));
335	<	suite.addTest(new TestSuite(SystemTest.class));
336	<	suite.addTest(new TestSuite(ThreadLocalTest.class));
337	<	suite.addTest(new TestSuite(ThreadPoolExecutorTest.class));
338	<	suite.addTest(new TestSuite(ThreadTest.class));
339	<	suite.addTest(new TestSuite(TimeUnitTest.class));
340	<
294	>	* Collects all JSR166 unit tests as one suite.
295	>	*/
296	>	public static Test suite() {
297	>	// Java7+ test classes
298	>	TestSuite suite = newTestSuite(
299	>	ForkJoinPoolTest.suite(),
300	>	ForkJoinTaskTest.suite(),
301	>	RecursiveActionTest.suite(),
302	>	RecursiveTaskTest.suite(),
303	>	LinkedTransferQueueTest.suite(),
304	>	PhaserTest.suite(),
305	>	ThreadLocalRandomTest.suite(),
306	>	AbstractExecutorServiceTest.suite(),
307	>	AbstractQueueTest.suite(),
308	>	AbstractQueuedSynchronizerTest.suite(),
309	>	AbstractQueuedLongSynchronizerTest.suite(),
310	>	ArrayBlockingQueueTest.suite(),
311	>	ArrayDequeTest.suite(),
312	>	AtomicBooleanTest.suite(),
313	>	AtomicIntegerArrayTest.suite(),
314	>	AtomicIntegerFieldUpdaterTest.suite(),
315	>	AtomicIntegerTest.suite(),
316	>	AtomicLongArrayTest.suite(),
317	>	AtomicLongFieldUpdaterTest.suite(),
318	>	AtomicLongTest.suite(),
319	>	AtomicMarkableReferenceTest.suite(),
320	>	AtomicReferenceArrayTest.suite(),
321	>	AtomicReferenceFieldUpdaterTest.suite(),
322	>	AtomicReferenceTest.suite(),
323	>	AtomicStampedReferenceTest.suite(),
324	>	ConcurrentHashMapTest.suite(),
325	>	ConcurrentLinkedDequeTest.suite(),
326	>	ConcurrentLinkedQueueTest.suite(),
327	>	ConcurrentSkipListMapTest.suite(),
328	>	ConcurrentSkipListSubMapTest.suite(),
329	>	ConcurrentSkipListSetTest.suite(),
330	>	ConcurrentSkipListSubSetTest.suite(),
331	>	CopyOnWriteArrayListTest.suite(),
332	>	CopyOnWriteArraySetTest.suite(),
333	>	CountDownLatchTest.suite(),
334	>	CyclicBarrierTest.suite(),
335	>	DelayQueueTest.suite(),
336	>	EntryTest.suite(),
337	>	ExchangerTest.suite(),
338	>	ExecutorsTest.suite(),
339	>	ExecutorCompletionServiceTest.suite(),
340	>	FutureTaskTest.suite(),
341	>	LinkedBlockingDequeTest.suite(),
342	>	LinkedBlockingQueueTest.suite(),
343	>	LinkedListTest.suite(),
344	>	LockSupportTest.suite(),
345	>	PriorityBlockingQueueTest.suite(),
346	>	PriorityQueueTest.suite(),
347	>	ReentrantLockTest.suite(),
348	>	ReentrantReadWriteLockTest.suite(),
349	>	ScheduledExecutorTest.suite(),
350	>	ScheduledExecutorSubclassTest.suite(),
351	>	SemaphoreTest.suite(),
352	>	SynchronousQueueTest.suite(),
353	>	SystemTest.suite(),
354	>	ThreadLocalTest.suite(),
355	>	ThreadPoolExecutorTest.suite(),
356	>	ThreadPoolExecutorSubclassTest.suite(),
357	>	ThreadTest.suite(),
358	>	TimeUnitTest.suite(),
359	>	TreeMapTest.suite(),
360	>	TreeSetTest.suite(),
361	>	TreeSubMapTest.suite(),
362	>	TreeSubSetTest.suite());
363	>
364	>	// Java8+ test classes
365	>	if (atLeastJava8()) {
366	>	String[] java8TestClassNames = {
367	>	"Atomic8Test",
368	>	"CompletableFutureTest",
369	>	"ConcurrentHashMap8Test",
370	>	"CountedCompleterTest",
371	>	"DoubleAccumulatorTest",
372	>	"DoubleAdderTest",
373	>	"ForkJoinPool8Test",
374	>	"ForkJoinTask8Test",
375	>	"LongAccumulatorTest",
376	>	"LongAdderTest",
377	>	"SplittableRandomTest",
378	>	"StampedLockTest",
379	>	"ThreadLocalRandom8Test",
380	>	};
381	>	addNamedTestClasses(suite, java8TestClassNames);
382	>	}
383	>
384	>	// Java9+ test classes
385	>	if (atLeastJava9()) {
386	>	String[] java9TestClassNames = {
387	>	"ThreadPoolExecutor9Test",
388	>	};
389	>	addNamedTestClasses(suite, java9TestClassNames);
390	>	}
391	>
392		return suite;
393		}
394
395	+	/** Returns list of junit-style test method names in given class. */
396	+	public static ArrayList<String> testMethodNames(Class<?> testClass) {
397	+	Method[] methods = testClass.getDeclaredMethods();
398	+	ArrayList<String> names = new ArrayList<String>(methods.length);
399	+	for (Method method : methods) {
400	+	if (method.getName().startsWith("test")
401	+	&& Modifier.isPublic(method.getModifiers())
402	+	// method.getParameterCount() requires jdk8+
403	+	&& method.getParameterTypes().length == 0) {
404	+	names.add(method.getName());
405	+	}
406	+	}
407	+	return names;
408	+	}
409	+
410	+	/**
411	+	* Returns junit-style testSuite for the given test class, but
412	+	* parameterized by passing extra data to each test.
413	+	*/
414	+	public static <ExtraData> Test parameterizedTestSuite
415	+	(Class<? extends JSR166TestCase> testClass,
416	+	Class<ExtraData> dataClass,
417	+	ExtraData data) {
418	+	try {
419	+	TestSuite suite = new TestSuite();
420	+	Constructor c =
421	+	testClass.getDeclaredConstructor(dataClass, String.class);
422	+	for (String methodName : testMethodNames(testClass))
423	+	suite.addTest((Test) c.newInstance(data, methodName));
424	+	return suite;
425	+	} catch (Exception e) {
426	+	throw new Error(e);
427	+	}
428	+	}
429	+
430	+	/**
431	+	* Returns junit-style testSuite for the jdk8 extension of the
432	+	* given test class, but parameterized by passing extra data to
433	+	* each test.  Uses reflection to allow compilation in jdk7.
434	+	*/
435	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
436	+	(Class<? extends JSR166TestCase> testClass,
437	+	Class<ExtraData> dataClass,
438	+	ExtraData data) {
439	+	if (atLeastJava8()) {
440	+	String name = testClass.getName();
441	+	String name8 = name.replaceAll("Test$", "8Test");
442	+	if (name.equals(name8)) throw new Error(name);
443	+	try {
444	+	return (Test)
445	+	Class.forName(name8)
446	+	.getMethod("testSuite", new Class[] { dataClass })
447	+	.invoke(null, data);
448	+	} catch (Exception e) {
449	+	throw new Error(e);
450	+	}
451	+	} else {
452	+	return new TestSuite();
453	+	}
454	+
455	+	}
456	+
457	+	// Delays for timing-dependent tests, in milliseconds.
458
459		public static long SHORT_DELAY_MS;
460		public static long SMALL_DELAY_MS;
461		public static long MEDIUM_DELAY_MS;
462		public static long LONG_DELAY_MS;
463
158	–
464		/**
465	<	* Return the shortest timed delay. This could
465	>	* Returns the shortest timed delay. This could
466		* be reimplemented to use for example a Property.
467	<	*/
467	>	*/
468		protected long getShortDelay() {
469	<	return 10;
469	>	return 50;
470		}
471
167	–
472		/**
473	<	* Set delays as multiples of SHORT_DELAY.
473	>	* Sets delays as multiples of SHORT_DELAY.
474		*/
475	<	protected  void setDelays() {
475	>	protected void setDelays() {
476		SHORT_DELAY_MS = getShortDelay();
477	<	SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
477	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
478		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
479	<	LONG_DELAY_MS = SHORT_DELAY_MS * 50;
479	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
480		}
481
482		/**
483	<	* Flag set true if any threadAssert methods fail
483	>	* Returns a timeout in milliseconds to be used in tests that
484	>	* verify that operations block or time out.
485		*/
486	<	volatile boolean threadFailed;
486	>	long timeoutMillis() {
487	>	return SHORT_DELAY_MS / 4;
488	>	}
489
490		/**
491	<	* Initialize test to indicate that no thread assertions have failed
491	>	* Returns a new Date instance representing a time at least
492	>	* delayMillis milliseconds in the future.
493		*/
494	<	public void setUp() {
494	>	Date delayedDate(long delayMillis) {
495	>	// Add 1 because currentTimeMillis is known to round into the past.
496	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
497	>	}
498	>
499	>	/**
500	>	* The first exception encountered if any threadAssertXXX method fails.
501	>	*/
502	>	private final AtomicReference<Throwable> threadFailure
503	>	= new AtomicReference<Throwable>(null);
504	>
505	>	/**
506	>	* Records an exception so that it can be rethrown later in the test
507	>	* harness thread, triggering a test case failure.  Only the first
508	>	* failure is recorded; subsequent calls to this method from within
509	>	* the same test have no effect.
510	>	*/
511	>	public void threadRecordFailure(Throwable t) {
512	>	threadFailure.compareAndSet(null, t);
513	>	}
514	>
515	>	public void setUp() {
516		setDelays();
188	–	threadFailed = false;
517		}
518
519		/**
520	<	* Trigger test case failure if any thread assertions have failed
520	>	* Extra checks that get done for all test cases.
521	>	*
522	>	* Triggers test case failure if any thread assertions have failed,
523	>	* by rethrowing, in the test harness thread, any exception recorded
524	>	* earlier by threadRecordFailure.
525	>	*
526	>	* Triggers test case failure if interrupt status is set in the main thread.
527	>	*/
528	>	public void tearDown() throws Exception {
529	>	Throwable t = threadFailure.getAndSet(null);
530	>	if (t != null) {
531	>	if (t instanceof Error)
532	>	throw (Error) t;
533	>	else if (t instanceof RuntimeException)
534	>	throw (RuntimeException) t;
535	>	else if (t instanceof Exception)
536	>	throw (Exception) t;
537	>	else {
538	>	AssertionFailedError afe =
539	>	new AssertionFailedError(t.toString());
540	>	afe.initCause(t);
541	>	throw afe;
542	>	}
543	>	}
544	>
545	>	if (Thread.interrupted())
546	>	throw new AssertionFailedError("interrupt status set in main thread");
547	>
548	>	checkForkJoinPoolThreadLeaks();
549	>	}
550	>
551	>	/**
552	>	* Finds missing try { ... } finally { joinPool(e); }
553		*/
554	<	public void tearDown() {
555	<	assertFalse(threadFailed);
554	>	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
555	>	Thread[] survivors = new Thread[5];
556	>	int count = Thread.enumerate(survivors);
557	>	for (int i = 0; i < count; i++) {
558	>	Thread thread = survivors[i];
559	>	String name = thread.getName();
560	>	if (name.startsWith("ForkJoinPool-")) {
561	>	// give thread some time to terminate
562	>	thread.join(LONG_DELAY_MS);
563	>	if (!thread.isAlive()) continue;
564	>	throw new AssertionFailedError
565	>	(String.format("Found leaked ForkJoinPool thread test=%s thread=%s%n",
566	>	toString(), name));
567	>	}
568	>	}
569		}
570
571		/**
572	<	* Fail, also setting status to indicate current testcase should fail
573	<	*/
572	>	* Just like fail(reason), but additionally recording (using
573	>	* threadRecordFailure) any AssertionFailedError thrown, so that
574	>	* the current testcase will fail.
575	>	*/
576		public void threadFail(String reason) {
577	<	threadFailed = true;
578	<	fail(reason);
577	>	try {
578	>	fail(reason);
579	>	} catch (AssertionFailedError t) {
580	>	threadRecordFailure(t);
581	>	fail(reason);
582	>	}
583		}
584
585		/**
586	<	* If expression not true, set status to indicate current testcase
587	<	* should fail
588	<	*/
586	>	* Just like assertTrue(b), but additionally recording (using
587	>	* threadRecordFailure) any AssertionFailedError thrown, so that
588	>	* the current testcase will fail.
589	>	*/
590		public void threadAssertTrue(boolean b) {
591	<	if (!b) {
212	<	threadFailed = true;
591	>	try {
592		assertTrue(b);
593	+	} catch (AssertionFailedError t) {
594	+	threadRecordFailure(t);
595	+	throw t;
596		}
597		}
598
599		/**
600	<	* If expression not false, set status to indicate current testcase
601	<	* should fail
602	<	*/
600	>	* Just like assertFalse(b), but additionally recording (using
601	>	* threadRecordFailure) any AssertionFailedError thrown, so that
602	>	* the current testcase will fail.
603	>	*/
604		public void threadAssertFalse(boolean b) {
605	<	if (b) {
223	<	threadFailed = true;
605	>	try {
606		assertFalse(b);
607	+	} catch (AssertionFailedError t) {
608	+	threadRecordFailure(t);
609	+	throw t;
610		}
611		}
612
613		/**
614	<	* If argument not null, set status to indicate current testcase
615	<	* should fail
616	<	*/
614	>	* Just like assertNull(x), but additionally recording (using
615	>	* threadRecordFailure) any AssertionFailedError thrown, so that
616	>	* the current testcase will fail.
617	>	*/
618		public void threadAssertNull(Object x) {
619	<	if (x != null) {
234	<	threadFailed = true;
619	>	try {
620		assertNull(x);
621	+	} catch (AssertionFailedError t) {
622	+	threadRecordFailure(t);
623	+	throw t;
624		}
625		}
626
627		/**
628	<	* If arguments not equal, set status to indicate current testcase
629	<	* should fail
630	<	*/
628	>	* Just like assertEquals(x, y), but additionally recording (using
629	>	* threadRecordFailure) any AssertionFailedError thrown, so that
630	>	* the current testcase will fail.
631	>	*/
632		public void threadAssertEquals(long x, long y) {
633	<	if (x != y) {
245	<	threadFailed = true;
633	>	try {
634		assertEquals(x, y);
635	+	} catch (AssertionFailedError t) {
636	+	threadRecordFailure(t);
637	+	throw t;
638		}
639		}
640
641		/**
642	<	* If arguments not equal, set status to indicate current testcase
643	<	* should fail
644	<	*/
642	>	* Just like assertEquals(x, y), but additionally recording (using
643	>	* threadRecordFailure) any AssertionFailedError thrown, so that
644	>	* the current testcase will fail.
645	>	*/
646		public void threadAssertEquals(Object x, Object y) {
647	<	if (x != y && (x == null || !x.equals(y))) {
256	<	threadFailed = true;
647	>	try {
648		assertEquals(x, y);
649	+	} catch (AssertionFailedError fail) {
650	+	threadRecordFailure(fail);
651	+	throw fail;
652	+	} catch (Throwable fail) {
653	+	threadUnexpectedException(fail);
654	+	}
655	+	}
656	+
657	+	/**
658	+	* Just like assertSame(x, y), but additionally recording (using
659	+	* threadRecordFailure) any AssertionFailedError thrown, so that
660	+	* the current testcase will fail.
661	+	*/
662	+	public void threadAssertSame(Object x, Object y) {
663	+	try {
664	+	assertSame(x, y);
665	+	} catch (AssertionFailedError fail) {
666	+	threadRecordFailure(fail);
667	+	throw fail;
668		}
669		}
670
671		/**
672	<	* threadFail with message "should throw exception"
673	<	*/
672	>	* Calls threadFail with message "should throw exception".
673	>	*/
674		public void threadShouldThrow() {
675	<	threadFailed = true;
266	<	fail("should throw exception");
675	>	threadFail("should throw exception");
676		}
677
678		/**
679	<	* threadFail with message "Unexpected exception"
679	>	* Calls threadFail with message "should throw" + exceptionName.
680		*/
681	<	public void threadUnexpectedException() {
682	<	threadFailed = true;
274	<	fail("Unexpected exception");
681	>	public void threadShouldThrow(String exceptionName) {
682	>	threadFail("should throw " + exceptionName);
683		}
684
685	+	/**
686	+	* Records the given exception using {@link #threadRecordFailure},
687	+	* then rethrows the exception, wrapping it in an
688	+	* AssertionFailedError if necessary.
689	+	*/
690	+	public void threadUnexpectedException(Throwable t) {
691	+	threadRecordFailure(t);
692	+	t.printStackTrace();
693	+	if (t instanceof RuntimeException)
694	+	throw (RuntimeException) t;
695	+	else if (t instanceof Error)
696	+	throw (Error) t;
697	+	else {
698	+	AssertionFailedError afe =
699	+	new AssertionFailedError("unexpected exception: " + t);
700	+	afe.initCause(t);
701	+	throw afe;
702	+	}
703	+	}
704
705		/**
706	<	* Wait out termination of a thread pool or fail doing so
706	>	* Delays, via Thread.sleep, for the given millisecond delay, but
707	>	* if the sleep is shorter than specified, may re-sleep or yield
708	>	* until time elapses.
709		*/
710	<	public void joinPool(ExecutorService exec) {
710	>	static void delay(long millis) throws InterruptedException {
711	>	long startTime = System.nanoTime();
712	>	long ns = millis * 1000 * 1000;
713	>	for (;;) {
714	>	if (millis > 0L)
715	>	Thread.sleep(millis);
716	>	else // too short to sleep
717	>	Thread.yield();
718	>	long d = ns - (System.nanoTime() - startTime);
719	>	if (d > 0L)
720	>	millis = d / (1000 * 1000);
721	>	else
722	>	break;
723	>	}
724	>	}
725	>
726	>	/**
727	>	* Waits out termination of a thread pool or fails doing so.
728	>	*/
729	>	void joinPool(ExecutorService exec) {
730		try {
731		exec.shutdown();
732	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
733	<	} catch(InterruptedException ie) {
734	<	fail("Unexpected exception");
732	>	if (!exec.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS))
733	>	fail("ExecutorService " + exec +
734	>	" did not terminate in a timely manner");
735	>	} catch (SecurityException ok) {
736	>	// Allowed in case test doesn't have privs
737	>	} catch (InterruptedException fail) {
738	>	fail("Unexpected InterruptedException");
739	>	}
740	>	}
741	>
742	>	/**
743	>	* A debugging tool to print all stack traces, as jstack does.
744	>	*/
745	>	static void printAllStackTraces() {
746	>	for (ThreadInfo info :
747	>	ManagementFactory.getThreadMXBean()
748	>	.dumpAllThreads(true, true))
749	>	System.err.print(info);
750	>	}
751	>
752	>	/**
753	>	* Checks that thread does not terminate within the default
754	>	* millisecond delay of {@code timeoutMillis()}.
755	>	*/
756	>	void assertThreadStaysAlive(Thread thread) {
757	>	assertThreadStaysAlive(thread, timeoutMillis());
758	>	}
759	>
760	>	/**
761	>	* Checks that thread does not terminate within the given millisecond delay.
762	>	*/
763	>	void assertThreadStaysAlive(Thread thread, long millis) {
764	>	try {
765	>	// No need to optimize the failing case via Thread.join.
766	>	delay(millis);
767	>	assertTrue(thread.isAlive());
768	>	} catch (InterruptedException fail) {
769	>	fail("Unexpected InterruptedException");
770		}
771		}
772
773	+	/**
774	+	* Checks that the threads do not terminate within the default
775	+	* millisecond delay of {@code timeoutMillis()}.
776	+	*/
777	+	void assertThreadsStayAlive(Thread... threads) {
778	+	assertThreadsStayAlive(timeoutMillis(), threads);
779	+	}
780
781		/**
782	<	* fail with message "should throw exception"
783	<	*/
782	>	* Checks that the threads do not terminate within the given millisecond delay.
783	>	*/
784	>	void assertThreadsStayAlive(long millis, Thread... threads) {
785	>	try {
786	>	// No need to optimize the failing case via Thread.join.
787	>	delay(millis);
788	>	for (Thread thread : threads)
789	>	assertTrue(thread.isAlive());
790	>	} catch (InterruptedException fail) {
791	>	fail("Unexpected InterruptedException");
792	>	}
793	>	}
794	>
795	>	/**
796	>	* Checks that future.get times out, with the default timeout of
797	>	* {@code timeoutMillis()}.
798	>	*/
799	>	void assertFutureTimesOut(Future future) {
800	>	assertFutureTimesOut(future, timeoutMillis());
801	>	}
802	>
803	>	/**
804	>	* Checks that future.get times out, with the given millisecond timeout.
805	>	*/
806	>	void assertFutureTimesOut(Future future, long timeoutMillis) {
807	>	long startTime = System.nanoTime();
808	>	try {
809	>	future.get(timeoutMillis, MILLISECONDS);
810	>	shouldThrow();
811	>	} catch (TimeoutException success) {
812	>	} catch (Exception fail) {
813	>	threadUnexpectedException(fail);
814	>	} finally { future.cancel(true); }
815	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
816	>	}
817	>
818	>	/**
819	>	* Fails with message "should throw exception".
820	>	*/
821		public void shouldThrow() {
822		fail("Should throw exception");
823		}
824
825		/**
826	<	* fail with message "Unexpected exception"
826	>	* Fails with message "should throw " + exceptionName.
827		*/
828	<	public void unexpectedException() {
829	<	fail("Unexpected exception");
828	>	public void shouldThrow(String exceptionName) {
829	>	fail("Should throw " + exceptionName);
830		}
831
305	–
832		/**
833		* The number of elements to place in collections, arrays, etc.
834		*/
835	<	static final int SIZE = 20;
835	>	public static final int SIZE = 20;
836
837		// Some convenient Integer constants
838
839	<	static final Integer zero = new Integer(0);
840	<	static final Integer one = new Integer(1);
841	<	static final Integer two = new Integer(2);
842	<	static final Integer three  = new Integer(3);
843	<	static final Integer four  = new Integer(4);
844	<	static final Integer five  = new Integer(5);
845	<	static final Integer six = new Integer(6);
846	<	static final Integer seven = new Integer(7);
847	<	static final Integer eight = new Integer(8);
848	<	static final Integer nine = new Integer(9);
849	<	static final Integer m1  = new Integer(-1);
850	<	static final Integer m2  = new Integer(-2);
851	<	static final Integer m3  = new Integer(-3);
852	<	static final Integer m4 = new Integer(-4);
853	<	static final Integer m5 = new Integer(-5);
854	<	static final Integer m10 = new Integer(-10);
839	>	public static final Integer zero  = new Integer(0);
840	>	public static final Integer one   = new Integer(1);
841	>	public static final Integer two   = new Integer(2);
842	>	public static final Integer three = new Integer(3);
843	>	public static final Integer four  = new Integer(4);
844	>	public static final Integer five  = new Integer(5);
845	>	public static final Integer six   = new Integer(6);
846	>	public static final Integer seven = new Integer(7);
847	>	public static final Integer eight = new Integer(8);
848	>	public static final Integer nine  = new Integer(9);
849	>	public static final Integer m1  = new Integer(-1);
850	>	public static final Integer m2  = new Integer(-2);
851	>	public static final Integer m3  = new Integer(-3);
852	>	public static final Integer m4  = new Integer(-4);
853	>	public static final Integer m5  = new Integer(-5);
854	>	public static final Integer m6  = new Integer(-6);
855	>	public static final Integer m10 = new Integer(-10);
856	>
857	>	/**
858	>	* Runs Runnable r with a security policy that permits precisely
859	>	* the specified permissions.  If there is no current security
860	>	* manager, the runnable is run twice, both with and without a
861	>	* security manager.  We require that any security manager permit
862	>	* getPolicy/setPolicy.
863	>	*/
864	>	public void runWithPermissions(Runnable r, Permission... permissions) {
865	>	SecurityManager sm = System.getSecurityManager();
866	>	if (sm == null) {
867	>	r.run();
868	>	}
869	>	runWithSecurityManagerWithPermissions(r, permissions);
870	>	}
871	>
872	>	/**
873	>	* Runs Runnable r with a security policy that permits precisely
874	>	* the specified permissions.  If there is no current security
875	>	* manager, a temporary one is set for the duration of the
876	>	* Runnable.  We require that any security manager permit
877	>	* getPolicy/setPolicy.
878	>	*/
879	>	public void runWithSecurityManagerWithPermissions(Runnable r,
880	>	Permission... permissions) {
881	>	SecurityManager sm = System.getSecurityManager();
882	>	if (sm == null) {
883	>	Policy savedPolicy = Policy.getPolicy();
884	>	try {
885	>	Policy.setPolicy(permissivePolicy());
886	>	System.setSecurityManager(new SecurityManager());
887	>	runWithSecurityManagerWithPermissions(r, permissions);
888	>	} finally {
889	>	System.setSecurityManager(null);
890	>	Policy.setPolicy(savedPolicy);
891	>	}
892	>	} else {
893	>	Policy savedPolicy = Policy.getPolicy();
894	>	AdjustablePolicy policy = new AdjustablePolicy(permissions);
895	>	Policy.setPolicy(policy);
896
897	+	try {
898	+	r.run();
899	+	} finally {
900	+	policy.addPermission(new SecurityPermission("setPolicy"));
901	+	Policy.setPolicy(savedPolicy);
902	+	}
903	+	}
904	+	}
905	+
906	+	/**
907	+	* Runs a runnable without any permissions.
908	+	*/
909	+	public void runWithoutPermissions(Runnable r) {
910	+	runWithPermissions(r);
911	+	}
912
913		/**
914		* A security policy where new permissions can be dynamically added
915		* or all cleared.
916		*/
917	<	static class AdjustablePolicy extends java.security.Policy {
917	>	public static class AdjustablePolicy extends java.security.Policy {
918		Permissions perms = new Permissions();
919	<	AdjustablePolicy() { }
919	>	AdjustablePolicy(Permission... permissions) {
920	>	for (Permission permission : permissions)
921	>	perms.add(permission);
922	>	}
923		void addPermission(Permission perm) { perms.add(perm); }
924		void clearPermissions() { perms = new Permissions(); }
925	<	public PermissionCollection getPermissions(CodeSource cs) {
926	<	return perms;
927	<	}
928	<	public PermissionCollection getPermissions(ProtectionDomain pd) {
929	<	return perms;
930	<	}
931	<	public boolean implies(ProtectionDomain pd, Permission p) {
932	<	return perms.implies(p);
933	<	}
934	<	public void refresh() {}
925	>	public PermissionCollection getPermissions(CodeSource cs) {
926	>	return perms;
927	>	}
928	>	public PermissionCollection getPermissions(ProtectionDomain pd) {
929	>	return perms;
930	>	}
931	>	public boolean implies(ProtectionDomain pd, Permission p) {
932	>	return perms.implies(p);
933	>	}
934	>	public void refresh() {}
935	>	public String toString() {
936	>	List<Permission> ps = new ArrayList<Permission>();
937	>	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
938	>	ps.add(e.nextElement());
939	>	return "AdjustablePolicy with permissions " + ps;
940	>	}
941		}
942
943	+	/**
944	+	* Returns a policy containing all the permissions we ever need.
945	+	*/
946	+	public static Policy permissivePolicy() {
947	+	return new AdjustablePolicy
948	+	// Permissions j.u.c. needs directly
949	+	(new RuntimePermission("modifyThread"),
950	+	new RuntimePermission("getClassLoader"),
951	+	new RuntimePermission("setContextClassLoader"),
952	+	// Permissions needed to change permissions!
953	+	new SecurityPermission("getPolicy"),
954	+	new SecurityPermission("setPolicy"),
955	+	new RuntimePermission("setSecurityManager"),
956	+	// Permissions needed by the junit test harness
957	+	new RuntimePermission("accessDeclaredMembers"),
958	+	new PropertyPermission("*", "read"),
959	+	new java.io.FilePermission("<<ALL FILES>>", "read"));
960	+	}
961
962	<	// Some convenient Runnable classes
962	>	/**
963	>	* Sleeps until the given time has elapsed.
964	>	* Throws AssertionFailedError if interrupted.
965	>	*/
966	>	void sleep(long millis) {
967	>	try {
968	>	delay(millis);
969	>	} catch (InterruptedException fail) {
970	>	AssertionFailedError afe =
971	>	new AssertionFailedError("Unexpected InterruptedException");
972	>	afe.initCause(fail);
973	>	throw afe;
974	>	}
975	>	}
976
977	<	static class NoOpRunnable implements Runnable {
978	<	public void run() {}
977	>	/**
978	>	* Spin-waits up to the specified number of milliseconds for the given
979	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
980	>	*/
981	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
982	>	long startTime = System.nanoTime();
983	>	for (;;) {
984	>	Thread.State s = thread.getState();
985	>	if (s == Thread.State.BLOCKED ||
986	>	s == Thread.State.WAITING ||
987	>	s == Thread.State.TIMED_WAITING)
988	>	return;
989	>	else if (s == Thread.State.TERMINATED)
990	>	fail("Unexpected thread termination");
991	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
992	>	threadAssertTrue(thread.isAlive());
993	>	return;
994	>	}
995	>	Thread.yield();
996	>	}
997		}
998
999	<	static class NoOpCallable implements Callable {
1000	<	public Object call() { return Boolean.TRUE; }
999	>	/**
1000	>	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
1001	>	* state: BLOCKED, WAITING, or TIMED_WAITING.
1002	>	*/
1003	>	void waitForThreadToEnterWaitState(Thread thread) {
1004	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
1005		}
1006
1007	<	static final String TEST_STRING = "a test string";
1007	>	/**
1008	>	* Returns the number of milliseconds since time given by
1009	>	* startNanoTime, which must have been previously returned from a
1010	>	* call to {@link System#nanoTime()}.
1011	>	*/
1012	>	static long millisElapsedSince(long startNanoTime) {
1013	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1014	>	}
1015
1016	<	static class StringTask implements Callable<String> {
1017	<	public String call() { return TEST_STRING; }
1016	>	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1017	>	//         long startTime = System.nanoTime();
1018	>	//         try {
1019	>	//             r.run();
1020	>	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1021	>	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1022	>	//             throw new AssertionFailedError("did not return promptly");
1023	>	//     }
1024	>
1025	>	//     void assertTerminatesPromptly(Runnable r) {
1026	>	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1027	>	//     }
1028	>
1029	>	/**
1030	>	* Checks that timed f.get() returns the expected value, and does not
1031	>	* wait for the timeout to elapse before returning.
1032	>	*/
1033	>	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1034	>	long startTime = System.nanoTime();
1035	>	try {
1036	>	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1037	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1038	>	if (millisElapsedSince(startTime) > timeoutMillis/2)
1039	>	throw new AssertionFailedError("timed get did not return promptly");
1040		}
1041
1042	<	static class NPETask implements Callable<String> {
1043	<	public String call() { throw new NullPointerException(); }
1042	>	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1043	>	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1044		}
1045
1046	<	static class CallableOne implements Callable<Integer> {
1047	<	public Integer call() { return one; }
1046	>	/**
1047	>	* Returns a new started daemon Thread running the given runnable.
1048	>	*/
1049	>	Thread newStartedThread(Runnable runnable) {
1050	>	Thread t = new Thread(runnable);
1051	>	t.setDaemon(true);
1052	>	t.start();
1053	>	return t;
1054		}
1055
1056	<	class ShortRunnable implements Runnable {
1057	<	public void run() {
1058	<	try {
1059	<	Thread.sleep(SHORT_DELAY_MS);
1060	<	}
1061	<	catch(Exception e) {
1062	<	threadUnexpectedException();
1056	>	/**
1057	>	* Waits for the specified time (in milliseconds) for the thread
1058	>	* to terminate (using {@link Thread#join(long)}), else interrupts
1059	>	* the thread (in the hope that it may terminate later) and fails.
1060	>	*/
1061	>	void awaitTermination(Thread t, long timeoutMillis) {
1062	>	try {
1063	>	t.join(timeoutMillis);
1064	>	} catch (InterruptedException fail) {
1065	>	threadUnexpectedException(fail);
1066	>	} finally {
1067	>	if (t.getState() != Thread.State.TERMINATED) {
1068	>	t.interrupt();
1069	>	fail("Test timed out");
1070		}
1071		}
1072		}
1073
1074	<	class ShortInterruptedRunnable implements Runnable {
1075	<	public void run() {
1074	>	/**
1075	>	* Waits for LONG_DELAY_MS milliseconds for the thread to
1076	>	* terminate (using {@link Thread#join(long)}), else interrupts
1077	>	* the thread (in the hope that it may terminate later) and fails.
1078	>	*/
1079	>	void awaitTermination(Thread t) {
1080	>	awaitTermination(t, LONG_DELAY_MS);
1081	>	}
1082	>
1083	>	// Some convenient Runnable classes
1084	>
1085	>	public abstract class CheckedRunnable implements Runnable {
1086	>	protected abstract void realRun() throws Throwable;
1087	>
1088	>	public final void run() {
1089		try {
1090	<	Thread.sleep(SHORT_DELAY_MS);
1091	<	threadShouldThrow();
1092	<	}
394	<	catch(InterruptedException success) {
1090	>	realRun();
1091	>	} catch (Throwable fail) {
1092	>	threadUnexpectedException(fail);
1093		}
1094		}
1095		}
1096
1097	<	class SmallRunnable implements Runnable {
1098	<	public void run() {
1097	>	public abstract class RunnableShouldThrow implements Runnable {
1098	>	protected abstract void realRun() throws Throwable;
1099	>
1100	>	final Class<?> exceptionClass;
1101	>
1102	>	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
1103	>	this.exceptionClass = exceptionClass;
1104	>	}
1105	>
1106	>	public final void run() {
1107		try {
1108	<	Thread.sleep(SMALL_DELAY_MS);
1109	<	}
1110	<	catch(Exception e) {
1111	<	threadUnexpectedException();
1108	>	realRun();
1109	>	threadShouldThrow(exceptionClass.getSimpleName());
1110	>	} catch (Throwable t) {
1111	>	if (! exceptionClass.isInstance(t))
1112	>	threadUnexpectedException(t);
1113		}
1114		}
1115		}
1116
1117	<	class SmallPossiblyInterruptedRunnable implements Runnable {
1118	<	public void run() {
1117	>	public abstract class ThreadShouldThrow extends Thread {
1118	>	protected abstract void realRun() throws Throwable;
1119	>
1120	>	final Class<?> exceptionClass;
1121	>
1122	>	<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) {
1123	>	this.exceptionClass = exceptionClass;
1124	>	}
1125	>
1126	>	public final void run() {
1127		try {
1128	<	Thread.sleep(SMALL_DELAY_MS);
1129	<	}
1130	<	catch(Exception e) {
1128	>	realRun();
1129	>	threadShouldThrow(exceptionClass.getSimpleName());
1130	>	} catch (Throwable t) {
1131	>	if (! exceptionClass.isInstance(t))
1132	>	threadUnexpectedException(t);
1133		}
1134		}
1135		}
1136
1137	<	class SmallCallable implements Callable {
1138	<	public Object call() {
1137	>	public abstract class CheckedInterruptedRunnable implements Runnable {
1138	>	protected abstract void realRun() throws Throwable;
1139	>
1140	>	public final void run() {
1141		try {
1142	<	Thread.sleep(SMALL_DELAY_MS);
1143	<	}
1144	<	catch(Exception e) {
1145	<	threadUnexpectedException();
1142	>	realRun();
1143	>	threadShouldThrow("InterruptedException");
1144	>	} catch (InterruptedException success) {
1145	>	threadAssertFalse(Thread.interrupted());
1146	>	} catch (Throwable fail) {
1147	>	threadUnexpectedException(fail);
1148		}
428	–	return Boolean.TRUE;
1149		}
1150		}
1151
1152	<	class SmallInterruptedRunnable implements Runnable {
1153	<	public void run() {
1152	>	public abstract class CheckedCallable<T> implements Callable<T> {
1153	>	protected abstract T realCall() throws Throwable;
1154	>
1155	>	public final T call() {
1156		try {
1157	<	Thread.sleep(SMALL_DELAY_MS);
1158	<	threadShouldThrow();
1159	<	}
1160	<	catch(InterruptedException success) {
1157	>	return realCall();
1158	>	} catch (Throwable fail) {
1159	>	threadUnexpectedException(fail);
1160	>	return null;
1161		}
1162		}
1163		}
1164
1165	+	public abstract class CheckedInterruptedCallable<T>
1166	+	implements Callable<T> {
1167	+	protected abstract T realCall() throws Throwable;
1168
1169	<	class MediumRunnable implements Runnable {
445	<	public void run() {
1169	>	public final T call() {
1170		try {
1171	<	Thread.sleep(MEDIUM_DELAY_MS);
1172	<	}
1173	<	catch(Exception e) {
1174	<	threadUnexpectedException();
1171	>	T result = realCall();
1172	>	threadShouldThrow("InterruptedException");
1173	>	return result;
1174	>	} catch (InterruptedException success) {
1175	>	threadAssertFalse(Thread.interrupted());
1176	>	} catch (Throwable fail) {
1177	>	threadUnexpectedException(fail);
1178		}
1179	+	return null;
1180		}
1181		}
1182
1183	<	class MediumInterruptedRunnable implements Runnable {
1184	<	public void run() {
1183	>	public static class NoOpRunnable implements Runnable {
1184	>	public void run() {}
1185	>	}
1186	>
1187	>	public static class NoOpCallable implements Callable {
1188	>	public Object call() { return Boolean.TRUE; }
1189	>	}
1190	>
1191	>	public static final String TEST_STRING = "a test string";
1192	>
1193	>	public static class StringTask implements Callable<String> {
1194	>	public String call() { return TEST_STRING; }
1195	>	}
1196	>
1197	>	public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1198	>	return new CheckedCallable<String>() {
1199	>	protected String realCall() {
1200	>	try {
1201	>	latch.await();
1202	>	} catch (InterruptedException quittingTime) {}
1203	>	return TEST_STRING;
1204	>	}};
1205	>	}
1206	>
1207	>	public Runnable awaiter(final CountDownLatch latch) {
1208	>	return new CheckedRunnable() {
1209	>	public void realRun() throws InterruptedException {
1210	>	await(latch);
1211	>	}};
1212	>	}
1213	>
1214	>	public void await(CountDownLatch latch) {
1215	>	try {
1216	>	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1217	>	} catch (Throwable fail) {
1218	>	threadUnexpectedException(fail);
1219	>	}
1220	>	}
1221	>
1222	>	public void await(Semaphore semaphore) {
1223	>	try {
1224	>	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1225	>	} catch (Throwable fail) {
1226	>	threadUnexpectedException(fail);
1227	>	}
1228	>	}
1229	>
1230	>	//     /**
1231	>	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1232	>	//      */
1233	>	//     public void await(AtomicBoolean flag) {
1234	>	//         await(flag, LONG_DELAY_MS);
1235	>	//     }
1236	>
1237	>	//     /**
1238	>	//      * Spin-waits up to the specified timeout until flag becomes true.
1239	>	//      */
1240	>	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1241	>	//         long startTime = System.nanoTime();
1242	>	//         while (!flag.get()) {
1243	>	//             if (millisElapsedSince(startTime) > timeoutMillis)
1244	>	//                 throw new AssertionFailedError("timed out");
1245	>	//             Thread.yield();
1246	>	//         }
1247	>	//     }
1248	>
1249	>	public static class NPETask implements Callable<String> {
1250	>	public String call() { throw new NullPointerException(); }
1251	>	}
1252	>
1253	>	public static class CallableOne implements Callable<Integer> {
1254	>	public Integer call() { return one; }
1255	>	}
1256	>
1257	>	public class ShortRunnable extends CheckedRunnable {
1258	>	protected void realRun() throws Throwable {
1259	>	delay(SHORT_DELAY_MS);
1260	>	}
1261	>	}
1262	>
1263	>	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1264	>	protected void realRun() throws InterruptedException {
1265	>	delay(SHORT_DELAY_MS);
1266	>	}
1267	>	}
1268	>
1269	>	public class SmallRunnable extends CheckedRunnable {
1270	>	protected void realRun() throws Throwable {
1271	>	delay(SMALL_DELAY_MS);
1272	>	}
1273	>	}
1274	>
1275	>	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1276	>	protected void realRun() {
1277		try {
1278	<	Thread.sleep(MEDIUM_DELAY_MS);
1279	<	threadShouldThrow();
460	<	}
461	<	catch(InterruptedException success) {
462	<	}
1278	>	delay(SMALL_DELAY_MS);
1279	>	} catch (InterruptedException ok) {}
1280		}
1281		}
1282
1283	<	class MediumPossiblyInterruptedRunnable implements Runnable {
1284	<	public void run() {
1283	>	public class SmallCallable extends CheckedCallable {
1284	>	protected Object realCall() throws InterruptedException {
1285	>	delay(SMALL_DELAY_MS);
1286	>	return Boolean.TRUE;
1287	>	}
1288	>	}
1289	>
1290	>	public class MediumRunnable extends CheckedRunnable {
1291	>	protected void realRun() throws Throwable {
1292	>	delay(MEDIUM_DELAY_MS);
1293	>	}
1294	>	}
1295	>
1296	>	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1297	>	protected void realRun() throws InterruptedException {
1298	>	delay(MEDIUM_DELAY_MS);
1299	>	}
1300	>	}
1301	>
1302	>	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1303	>	return new CheckedRunnable() {
1304	>	protected void realRun() {
1305	>	try {
1306	>	delay(timeoutMillis);
1307	>	} catch (InterruptedException ok) {}
1308	>	}};
1309	>	}
1310	>
1311	>	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1312	>	protected void realRun() {
1313		try {
1314	<	Thread.sleep(MEDIUM_DELAY_MS);
1315	<	}
471	<	catch(InterruptedException success) {
472	<	}
1314	>	delay(MEDIUM_DELAY_MS);
1315	>	} catch (InterruptedException ok) {}
1316		}
1317		}
1318
1319	<	class LongPossiblyInterruptedRunnable implements Runnable {
1320	<	public void run() {
1319	>	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1320	>	protected void realRun() {
1321		try {
1322	<	Thread.sleep(LONG_DELAY_MS);
1323	<	}
481	<	catch(InterruptedException success) {
482	<	}
1322	>	delay(LONG_DELAY_MS);
1323	>	} catch (InterruptedException ok) {}
1324		}
1325		}
1326
1327		/**
1328		* For use as ThreadFactory in constructors
1329		*/
1330	<	static class SimpleThreadFactory implements ThreadFactory{
1331	<	public Thread newThread(Runnable r){
1330	>	public static class SimpleThreadFactory implements ThreadFactory {
1331	>	public Thread newThread(Runnable r) {
1332		return new Thread(r);
1333	<	}
1333	>	}
1334		}
1335
1336	<	static class TrackedShortRunnable implements Runnable {
1337	<	volatile boolean done = false;
1336	>	public interface TrackedRunnable extends Runnable {
1337	>	boolean isDone();
1338	>	}
1339	>
1340	>	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1341	>	return new TrackedRunnable() {
1342	>	private volatile boolean done = false;
1343	>	public boolean isDone() { return done; }
1344	>	public void run() {
1345	>	try {
1346	>	delay(timeoutMillis);
1347	>	done = true;
1348	>	} catch (InterruptedException ok) {}
1349	>	}
1350	>	};
1351	>	}
1352	>
1353	>	public static class TrackedShortRunnable implements Runnable {
1354	>	public volatile boolean done = false;
1355		public void run() {
1356		try {
1357	<	Thread.sleep(SMALL_DELAY_MS);
1357	>	delay(SHORT_DELAY_MS);
1358		done = true;
1359	<	} catch(Exception e){
502	<	}
1359	>	} catch (InterruptedException ok) {}
1360		}
1361		}
1362
1363	<	static class TrackedMediumRunnable implements Runnable {
1364	<	volatile boolean done = false;
1363	>	public static class TrackedSmallRunnable implements Runnable {
1364	>	public volatile boolean done = false;
1365		public void run() {
1366		try {
1367	<	Thread.sleep(MEDIUM_DELAY_MS);
1367	>	delay(SMALL_DELAY_MS);
1368		done = true;
1369	<	} catch(Exception e){
513	<	}
1369	>	} catch (InterruptedException ok) {}
1370		}
1371		}
1372
1373	<	static class TrackedLongRunnable implements Runnable {
1374	<	volatile boolean done = false;
1373	>	public static class TrackedMediumRunnable implements Runnable {
1374	>	public volatile boolean done = false;
1375		public void run() {
1376		try {
1377	<	Thread.sleep(LONG_DELAY_MS);
1377	>	delay(MEDIUM_DELAY_MS);
1378		done = true;
1379	<	} catch(Exception e){
524	<	}
1379	>	} catch (InterruptedException ok) {}
1380		}
1381		}
1382
1383	<	static class TrackedNoOpRunnable implements Runnable {
1384	<	volatile boolean done = false;
1383	>	public static class TrackedLongRunnable implements Runnable {
1384	>	public volatile boolean done = false;
1385	>	public void run() {
1386	>	try {
1387	>	delay(LONG_DELAY_MS);
1388	>	done = true;
1389	>	} catch (InterruptedException ok) {}
1390	>	}
1391	>	}
1392	>
1393	>	public static class TrackedNoOpRunnable implements Runnable {
1394	>	public volatile boolean done = false;
1395		public void run() {
1396		done = true;
1397		}
1398		}
1399
1400	<	static class TrackedCallable implements Callable {
1401	<	volatile boolean done = false;
1400	>	public static class TrackedCallable implements Callable {
1401	>	public volatile boolean done = false;
1402		public Object call() {
1403		try {
1404	<	Thread.sleep(SMALL_DELAY_MS);
1404	>	delay(SMALL_DELAY_MS);
1405		done = true;
1406	<	} catch(Exception e){
542	<	}
1406	>	} catch (InterruptedException ok) {}
1407		return Boolean.TRUE;
1408		}
1409		}
1410
1411	+	/**
1412	+	* Analog of CheckedRunnable for RecursiveAction
1413	+	*/
1414	+	public abstract class CheckedRecursiveAction extends RecursiveAction {
1415	+	protected abstract void realCompute() throws Throwable;
1416	+
1417	+	@Override protected final void compute() {
1418	+	try {
1419	+	realCompute();
1420	+	} catch (Throwable fail) {
1421	+	threadUnexpectedException(fail);
1422	+	}
1423	+	}
1424	+	}
1425	+
1426	+	/**
1427	+	* Analog of CheckedCallable for RecursiveTask
1428	+	*/
1429	+	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1430	+	protected abstract T realCompute() throws Throwable;
1431	+
1432	+	@Override protected final T compute() {
1433	+	try {
1434	+	return realCompute();
1435	+	} catch (Throwable fail) {
1436	+	threadUnexpectedException(fail);
1437	+	return null;
1438	+	}
1439	+	}
1440	+	}
1441
1442		/**
1443		* For use as RejectedExecutionHandler in constructors
1444		*/
1445	<	static class NoOpREHandler implements RejectedExecutionHandler{
1446	<	public void rejectedExecution(Runnable r, ThreadPoolExecutor executor){}
1445	>	public static class NoOpREHandler implements RejectedExecutionHandler {
1446	>	public void rejectedExecution(Runnable r,
1447	>	ThreadPoolExecutor executor) {}
1448	>	}
1449	>
1450	>	/**
1451	>	* A CyclicBarrier that uses timed await and fails with
1452	>	* AssertionFailedErrors instead of throwing checked exceptions.
1453	>	*/
1454	>	public class CheckedBarrier extends CyclicBarrier {
1455	>	public CheckedBarrier(int parties) { super(parties); }
1456	>
1457	>	public int await() {
1458	>	try {
1459	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1460	>	} catch (TimeoutException timedOut) {
1461	>	throw new AssertionFailedError("timed out");
1462	>	} catch (Exception fail) {
1463	>	AssertionFailedError afe =
1464	>	new AssertionFailedError("Unexpected exception: " + fail);
1465	>	afe.initCause(fail);
1466	>	throw afe;
1467	>	}
1468	>	}
1469	>	}
1470	>
1471	>	void checkEmpty(BlockingQueue q) {
1472	>	try {
1473	>	assertTrue(q.isEmpty());
1474	>	assertEquals(0, q.size());
1475	>	assertNull(q.peek());
1476	>	assertNull(q.poll());
1477	>	assertNull(q.poll(0, MILLISECONDS));
1478	>	assertEquals(q.toString(), "[]");
1479	>	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1480	>	assertFalse(q.iterator().hasNext());
1481	>	try {
1482	>	q.element();
1483	>	shouldThrow();
1484	>	} catch (NoSuchElementException success) {}
1485	>	try {
1486	>	q.iterator().next();
1487	>	shouldThrow();
1488	>	} catch (NoSuchElementException success) {}
1489	>	try {
1490	>	q.remove();
1491	>	shouldThrow();
1492	>	} catch (NoSuchElementException success) {}
1493	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1494	>	}
1495	>
1496	>	void assertSerialEquals(Object x, Object y) {
1497	>	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1498	>	}
1499	>
1500	>	void assertNotSerialEquals(Object x, Object y) {
1501	>	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1502	>	}
1503	>
1504	>	byte[] serialBytes(Object o) {
1505	>	try {
1506	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1507	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1508	>	oos.writeObject(o);
1509	>	oos.flush();
1510	>	oos.close();
1511	>	return bos.toByteArray();
1512	>	} catch (Throwable fail) {
1513	>	threadUnexpectedException(fail);
1514	>	return new byte[0];
1515	>	}
1516	>	}
1517	>
1518	>	@SuppressWarnings("unchecked")
1519	>	<T> T serialClone(T o) {
1520	>	try {
1521	>	ObjectInputStream ois = new ObjectInputStream
1522	>	(new ByteArrayInputStream(serialBytes(o)));
1523	>	T clone = (T) ois.readObject();
1524	>	assertSame(o.getClass(), clone.getClass());
1525	>	return clone;
1526	>	} catch (Throwable fail) {
1527	>	threadUnexpectedException(fail);
1528	>	return null;
1529	>	}
1530	>	}
1531	>
1532	>	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1533	>	Runnable... throwingActions) {
1534	>	for (Runnable throwingAction : throwingActions) {
1535	>	boolean threw = false;
1536	>	try { throwingAction.run(); }
1537	>	catch (Throwable t) {
1538	>	threw = true;
1539	>	if (!expectedExceptionClass.isInstance(t)) {
1540	>	AssertionFailedError afe =
1541	>	new AssertionFailedError
1542	>	("Expected " + expectedExceptionClass.getName() +
1543	>	", got " + t.getClass().getName());
1544	>	afe.initCause(t);
1545	>	threadUnexpectedException(afe);
1546	>	}
1547	>	}
1548	>	if (!threw)
1549	>	shouldThrow(expectedExceptionClass.getName());
1550	>	}
1551	>	}
1552	>
1553	>	public void assertIteratorExhausted(Iterator<?> it) {
1554	>	try {
1555	>	it.next();
1556	>	shouldThrow();
1557	>	} catch (NoSuchElementException success) {}
1558	>	assertFalse(it.hasNext());
1559		}
554	–
555	–
1560		}

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