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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.11 by dl, Tue Dec 23 19:40:24 2003 UTC vs.
Revision 1.138 by jsr166, Fri Sep 4 19:35:46 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.*;
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
70	<	* threadAssertEquals}, or {@link threadAssertNull}, (not
71	<	* <tt>fail</tt>, <tt>assertTrue</tt>, etc.) It is OK (but not
69	>	* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
70	>	* #threadAssertEquals}, or {@link #threadAssertNull}, (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
76	>	* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
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 62 | 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 79 | 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	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
176	<	*/
177	<	public static void main (String[] args) {
178	<	junit.textui.TestRunner.run (suite());
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	<	* Collects all JSR166 unit tests as one suite
213	<	*/
214	<	public static Test suite ( ) {
215	<	TestSuite suite = new TestSuite("JSR166 Unit Tests");
216	<
217	<	suite.addTest(new TestSuite(AbstractExecutorServiceTest.class));
218	<	suite.addTest(new TestSuite(ArrayBlockingQueueTest.class));
219	<	suite.addTest(new TestSuite(AtomicBooleanTest.class));
220	<	suite.addTest(new TestSuite(AtomicIntegerArrayTest.class));
221	<	suite.addTest(new TestSuite(AtomicIntegerFieldUpdaterTest.class));
222	<	suite.addTest(new TestSuite(AtomicIntegerTest.class));
223	<	suite.addTest(new TestSuite(AtomicLongArrayTest.class));
224	<	suite.addTest(new TestSuite(AtomicLongFieldUpdaterTest.class));
225	<	suite.addTest(new TestSuite(AtomicLongTest.class));
226	<	suite.addTest(new TestSuite(AtomicMarkableReferenceTest.class));
227	<	suite.addTest(new TestSuite(AtomicReferenceArrayTest.class));
228	<	suite.addTest(new TestSuite(AtomicReferenceFieldUpdaterTest.class));
229	<	suite.addTest(new TestSuite(AtomicReferenceTest.class));
230	<	suite.addTest(new TestSuite(AtomicStampedReferenceTest.class));
231	<	suite.addTest(new TestSuite(ConcurrentHashMapTest.class));
232	<	suite.addTest(new TestSuite(ConcurrentLinkedQueueTest.class));
233	<	suite.addTest(new TestSuite(CopyOnWriteArrayListTest.class));
234	<	suite.addTest(new TestSuite(CopyOnWriteArraySetTest.class));
235	<	suite.addTest(new TestSuite(CountDownLatchTest.class));
236	<	suite.addTest(new TestSuite(CyclicBarrierTest.class));
237	<	suite.addTest(new TestSuite(DelayQueueTest.class));
238	<	suite.addTest(new TestSuite(ExchangerTest.class));
239	<	suite.addTest(new TestSuite(ExecutorsTest.class));
240	<	suite.addTest(new TestSuite(ExecutorCompletionServiceTest.class));
241	<	suite.addTest(new TestSuite(FutureTaskTest.class));
242	<	suite.addTest(new TestSuite(LinkedBlockingQueueTest.class));
243	<	suite.addTest(new TestSuite(LinkedListTest.class));
244	<	suite.addTest(new TestSuite(LockSupportTest.class));
245	<	suite.addTest(new TestSuite(PriorityBlockingQueueTest.class));
246	<	suite.addTest(new TestSuite(PriorityQueueTest.class));
131	<	suite.addTest(new TestSuite(ReentrantLockTest.class));
132	<	suite.addTest(new TestSuite(ReentrantReadWriteLockTest.class));
133	<	suite.addTest(new TestSuite(ScheduledExecutorTest.class));
134	<	suite.addTest(new TestSuite(SemaphoreTest.class));
135	<	suite.addTest(new TestSuite(SynchronousQueueTest.class));
136	<	suite.addTest(new TestSuite(SystemTest.class));
137	<	suite.addTest(new TestSuite(ThreadLocalTest.class));
138	<	suite.addTest(new TestSuite(ThreadPoolExecutorTest.class));
139	<	suite.addTest(new TestSuite(ThreadTest.class));
140	<	suite.addTest(new TestSuite(TimeUnitTest.class));
141	<
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	+	return JAVA_CLASS_VERSION >= 53.0
286	+	// As of 2015-09, java9 still uses 52.0 class file version
287	+	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?(9|[0-9][0-9])$");
288	+	}
289	+	public static boolean atLeastJava10() {
290	+	return JAVA_CLASS_VERSION >= 54.0
291	+	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?[0-9][0-9]$");
292	+	}
293	+
294	+	/**
295	+	* Collects all JSR166 unit tests as one suite.
296	+	*/
297	+	public static Test suite() {
298	+	// Java7+ test classes
299	+	TestSuite suite = newTestSuite(
300	+	ForkJoinPoolTest.suite(),
301	+	ForkJoinTaskTest.suite(),
302	+	RecursiveActionTest.suite(),
303	+	RecursiveTaskTest.suite(),
304	+	LinkedTransferQueueTest.suite(),
305	+	PhaserTest.suite(),
306	+	ThreadLocalRandomTest.suite(),
307	+	AbstractExecutorServiceTest.suite(),
308	+	AbstractQueueTest.suite(),
309	+	AbstractQueuedSynchronizerTest.suite(),
310	+	AbstractQueuedLongSynchronizerTest.suite(),
311	+	ArrayBlockingQueueTest.suite(),
312	+	ArrayDequeTest.suite(),
313	+	AtomicBooleanTest.suite(),
314	+	AtomicIntegerArrayTest.suite(),
315	+	AtomicIntegerFieldUpdaterTest.suite(),
316	+	AtomicIntegerTest.suite(),
317	+	AtomicLongArrayTest.suite(),
318	+	AtomicLongFieldUpdaterTest.suite(),
319	+	AtomicLongTest.suite(),
320	+	AtomicMarkableReferenceTest.suite(),
321	+	AtomicReferenceArrayTest.suite(),
322	+	AtomicReferenceFieldUpdaterTest.suite(),
323	+	AtomicReferenceTest.suite(),
324	+	AtomicStampedReferenceTest.suite(),
325	+	ConcurrentHashMapTest.suite(),
326	+	ConcurrentLinkedDequeTest.suite(),
327	+	ConcurrentLinkedQueueTest.suite(),
328	+	ConcurrentSkipListMapTest.suite(),
329	+	ConcurrentSkipListSubMapTest.suite(),
330	+	ConcurrentSkipListSetTest.suite(),
331	+	ConcurrentSkipListSubSetTest.suite(),
332	+	CopyOnWriteArrayListTest.suite(),
333	+	CopyOnWriteArraySetTest.suite(),
334	+	CountDownLatchTest.suite(),
335	+	CyclicBarrierTest.suite(),
336	+	DelayQueueTest.suite(),
337	+	EntryTest.suite(),
338	+	ExchangerTest.suite(),
339	+	ExecutorsTest.suite(),
340	+	ExecutorCompletionServiceTest.suite(),
341	+	FutureTaskTest.suite(),
342	+	LinkedBlockingDequeTest.suite(),
343	+	LinkedBlockingQueueTest.suite(),
344	+	LinkedListTest.suite(),
345	+	LockSupportTest.suite(),
346	+	PriorityBlockingQueueTest.suite(),
347	+	PriorityQueueTest.suite(),
348	+	ReentrantLockTest.suite(),
349	+	ReentrantReadWriteLockTest.suite(),
350	+	ScheduledExecutorTest.suite(),
351	+	ScheduledExecutorSubclassTest.suite(),
352	+	SemaphoreTest.suite(),
353	+	SynchronousQueueTest.suite(),
354	+	SystemTest.suite(),
355	+	ThreadLocalTest.suite(),
356	+	ThreadPoolExecutorTest.suite(),
357	+	ThreadPoolExecutorSubclassTest.suite(),
358	+	ThreadTest.suite(),
359	+	TimeUnitTest.suite(),
360	+	TreeMapTest.suite(),
361	+	TreeSetTest.suite(),
362	+	TreeSubMapTest.suite(),
363	+	TreeSubSetTest.suite());
364	+
365	+	// Java8+ test classes
366	+	if (atLeastJava8()) {
367	+	String[] java8TestClassNames = {
368	+	"Atomic8Test",
369	+	"CompletableFutureTest",
370	+	"ConcurrentHashMap8Test",
371	+	"CountedCompleterTest",
372	+	"DoubleAccumulatorTest",
373	+	"DoubleAdderTest",
374	+	"ForkJoinPool8Test",
375	+	"ForkJoinTask8Test",
376	+	"LongAccumulatorTest",
377	+	"LongAdderTest",
378	+	"SplittableRandomTest",
379	+	"StampedLockTest",
380	+	"ThreadLocalRandom8Test",
381	+	};
382	+	addNamedTestClasses(suite, java8TestClassNames);
383	+	}
384	+
385	+	// Java9+ test classes
386	+	if (atLeastJava9()) {
387	+	String[] java9TestClassNames = {
388	+	// Currently empty
389	+	};
390	+	addNamedTestClasses(suite, java9TestClassNames);
391	+	}
392	+
393	+	return suite;
394	+	}
395	+
396	+	/** Returns list of junit-style test method names in given class. */
397	+	public static ArrayList<String> testMethodNames(Class<?> testClass) {
398	+	Method[] methods = testClass.getDeclaredMethods();
399	+	ArrayList<String> names = new ArrayList<String>(methods.length);
400	+	for (Method method : methods) {
401	+	if (method.getName().startsWith("test")
402	+	&& Modifier.isPublic(method.getModifiers())
403	+	// method.getParameterCount() requires jdk8+
404	+	&& method.getParameterTypes().length == 0) {
405	+	names.add(method.getName());
406	+	}
407	+	}
408	+	return names;
409	+	}
410	+
411	+	/**
412	+	* Returns junit-style testSuite for the given test class, but
413	+	* parameterized by passing extra data to each test.
414	+	*/
415	+	public static <ExtraData> Test parameterizedTestSuite
416	+	(Class<? extends JSR166TestCase> testClass,
417	+	Class<ExtraData> dataClass,
418	+	ExtraData data) {
419	+	try {
420	+	TestSuite suite = new TestSuite();
421	+	Constructor c =
422	+	testClass.getDeclaredConstructor(dataClass, String.class);
423	+	for (String methodName : testMethodNames(testClass))
424	+	suite.addTest((Test) c.newInstance(data, methodName));
425	+	return suite;
426	+	} catch (Exception e) {
427	+	throw new Error(e);
428	+	}
429	+	}
430	+
431	+	/**
432	+	* Returns junit-style testSuite for the jdk8 extension of the
433	+	* given test class, but parameterized by passing extra data to
434	+	* each test.  Uses reflection to allow compilation in jdk7.
435	+	*/
436	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
437	+	(Class<? extends JSR166TestCase> testClass,
438	+	Class<ExtraData> dataClass,
439	+	ExtraData data) {
440	+	if (atLeastJava8()) {
441	+	String name = testClass.getName();
442	+	String name8 = name.replaceAll("Test$", "8Test");
443	+	if (name.equals(name8)) throw new Error(name);
444	+	try {
445	+	return (Test)
446	+	Class.forName(name8)
447	+	.getMethod("testSuite", new Class[] { dataClass })
448	+	.invoke(null, data);
449	+	} catch (Exception e) {
450	+	throw new Error(e);
451	+	}
452	+	} else {
453	+	return new TestSuite();
454	+	}
455	+
456	+	}
457	+
458	+	// Delays for timing-dependent tests, in milliseconds.
459
460		public static long SHORT_DELAY_MS;
461		public static long SMALL_DELAY_MS;
462		public static long MEDIUM_DELAY_MS;
463		public static long LONG_DELAY_MS;
464
151	–
465		/**
466	<	* Return the shortest timed delay. This could
467	<	* be reimplmented to use for example a Property.
468	<	*/
466	>	* Returns the shortest timed delay. This could
467	>	* be reimplemented to use for example a Property.
468	>	*/
469		protected long getShortDelay() {
470	<	return 100;
470	>	return 50;
471		}
472
160	–
473		/**
474	<	* Set delays as multiples of SHORT_DELAY.
474	>	* Sets delays as multiples of SHORT_DELAY.
475		*/
476	<	protected  void setDelays() {
476	>	protected void setDelays() {
477		SHORT_DELAY_MS = getShortDelay();
478	<	SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
478	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
479		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
480	<	LONG_DELAY_MS = SHORT_DELAY_MS * 50;
480	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
481		}
482
483		/**
484	<	* Flag set true if any threadAssert methods fail
484	>	* Returns a timeout in milliseconds to be used in tests that
485	>	* verify that operations block or time out.
486		*/
487	<	volatile boolean threadFailed;
487	>	long timeoutMillis() {
488	>	return SHORT_DELAY_MS / 4;
489	>	}
490	>
491	>	/**
492	>	* Returns a new Date instance representing a time at least
493	>	* delayMillis milliseconds in the future.
494	>	*/
495	>	Date delayedDate(long delayMillis) {
496	>	// Add 1 because currentTimeMillis is known to round into the past.
497	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
498	>	}
499
500		/**
501	<	* Initialize test to indicate that no thread assertions have failed
501	>	* The first exception encountered if any threadAssertXXX method fails.
502		*/
503	<	public void setUp() {
503	>	private final AtomicReference<Throwable> threadFailure
504	>	= new AtomicReference<Throwable>(null);
505	>
506	>	/**
507	>	* Records an exception so that it can be rethrown later in the test
508	>	* harness thread, triggering a test case failure.  Only the first
509	>	* failure is recorded; subsequent calls to this method from within
510	>	* the same test have no effect.
511	>	*/
512	>	public void threadRecordFailure(Throwable t) {
513	>	threadFailure.compareAndSet(null, t);
514	>	}
515	>
516	>	public void setUp() {
517		setDelays();
181	–	threadFailed = false;
518		}
519
520		/**
521	<	* Trigger test case failure if any thread assertions have failed
521	>	* Extra checks that get done for all test cases.
522	>	*
523	>	* Triggers test case failure if any thread assertions have failed,
524	>	* by rethrowing, in the test harness thread, any exception recorded
525	>	* earlier by threadRecordFailure.
526	>	*
527	>	* Triggers test case failure if interrupt status is set in the main thread.
528	>	*/
529	>	public void tearDown() throws Exception {
530	>	Throwable t = threadFailure.getAndSet(null);
531	>	if (t != null) {
532	>	if (t instanceof Error)
533	>	throw (Error) t;
534	>	else if (t instanceof RuntimeException)
535	>	throw (RuntimeException) t;
536	>	else if (t instanceof Exception)
537	>	throw (Exception) t;
538	>	else {
539	>	AssertionFailedError afe =
540	>	new AssertionFailedError(t.toString());
541	>	afe.initCause(t);
542	>	throw afe;
543	>	}
544	>	}
545	>
546	>	if (Thread.interrupted())
547	>	throw new AssertionFailedError("interrupt status set in main thread");
548	>
549	>	checkForkJoinPoolThreadLeaks();
550	>	}
551	>
552	>	/**
553	>	* Finds missing try { ... } finally { joinPool(e); }
554		*/
555	<	public void tearDown() {
556	<	assertFalse(threadFailed);
555	>	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
556	>	Thread[] survivors = new Thread[5];
557	>	int count = Thread.enumerate(survivors);
558	>	for (int i = 0; i < count; i++) {
559	>	Thread thread = survivors[i];
560	>	String name = thread.getName();
561	>	if (name.startsWith("ForkJoinPool-")) {
562	>	// give thread some time to terminate
563	>	thread.join(LONG_DELAY_MS);
564	>	if (!thread.isAlive()) continue;
565	>	throw new AssertionFailedError
566	>	(String.format("Found leaked ForkJoinPool thread test=%s thread=%s%n",
567	>	toString(), name));
568	>	}
569	>	}
570		}
571
572		/**
573	<	* Fail, also setting status to indicate current testcase should fail
574	<	*/
573	>	* Just like fail(reason), but additionally recording (using
574	>	* threadRecordFailure) any AssertionFailedError thrown, so that
575	>	* the current testcase will fail.
576	>	*/
577		public void threadFail(String reason) {
578	<	threadFailed = true;
579	<	fail(reason);
578	>	try {
579	>	fail(reason);
580	>	} catch (AssertionFailedError t) {
581	>	threadRecordFailure(t);
582	>	fail(reason);
583	>	}
584		}
585
586		/**
587	<	* If expression not true, set status to indicate current testcase
588	<	* should fail
589	<	*/
587	>	* Just like assertTrue(b), but additionally recording (using
588	>	* threadRecordFailure) any AssertionFailedError thrown, so that
589	>	* the current testcase will fail.
590	>	*/
591		public void threadAssertTrue(boolean b) {
592	<	if (!b) {
205	<	threadFailed = true;
592	>	try {
593		assertTrue(b);
594	+	} catch (AssertionFailedError t) {
595	+	threadRecordFailure(t);
596	+	throw t;
597		}
598		}
599
600		/**
601	<	* If expression not false, set status to indicate current testcase
602	<	* should fail
603	<	*/
601	>	* Just like assertFalse(b), but additionally recording (using
602	>	* threadRecordFailure) any AssertionFailedError thrown, so that
603	>	* the current testcase will fail.
604	>	*/
605		public void threadAssertFalse(boolean b) {
606	<	if (b) {
216	<	threadFailed = true;
606	>	try {
607		assertFalse(b);
608	+	} catch (AssertionFailedError t) {
609	+	threadRecordFailure(t);
610	+	throw t;
611		}
612		}
613
614		/**
615	<	* If argument not null, set status to indicate current testcase
616	<	* should fail
617	<	*/
615	>	* Just like assertNull(x), but additionally recording (using
616	>	* threadRecordFailure) any AssertionFailedError thrown, so that
617	>	* the current testcase will fail.
618	>	*/
619		public void threadAssertNull(Object x) {
620	<	if (x != null) {
227	<	threadFailed = true;
620	>	try {
621		assertNull(x);
622	+	} catch (AssertionFailedError t) {
623	+	threadRecordFailure(t);
624	+	throw t;
625		}
626		}
627
628		/**
629	<	* If arguments not equal, set status to indicate current testcase
630	<	* should fail
631	<	*/
629	>	* Just like assertEquals(x, y), but additionally recording (using
630	>	* threadRecordFailure) any AssertionFailedError thrown, so that
631	>	* the current testcase will fail.
632	>	*/
633		public void threadAssertEquals(long x, long y) {
634	<	if (x != y) {
238	<	threadFailed = true;
634	>	try {
635		assertEquals(x, y);
636	+	} catch (AssertionFailedError t) {
637	+	threadRecordFailure(t);
638	+	throw t;
639		}
640		}
641
642		/**
643	<	* If arguments not equal, set status to indicate current testcase
644	<	* should fail
645	<	*/
643	>	* Just like assertEquals(x, y), but additionally recording (using
644	>	* threadRecordFailure) any AssertionFailedError thrown, so that
645	>	* the current testcase will fail.
646	>	*/
647		public void threadAssertEquals(Object x, Object y) {
648	<	if (x != y && (x == null || !x.equals(y))) {
249	<	threadFailed = true;
648	>	try {
649		assertEquals(x, y);
650	+	} catch (AssertionFailedError fail) {
651	+	threadRecordFailure(fail);
652	+	throw fail;
653	+	} catch (Throwable fail) {
654	+	threadUnexpectedException(fail);
655		}
656		}
657
658		/**
659	<	* threadFail with message "should throw exception"
660	<	*/
659	>	* Just like assertSame(x, y), but additionally recording (using
660	>	* threadRecordFailure) any AssertionFailedError thrown, so that
661	>	* the current testcase will fail.
662	>	*/
663	>	public void threadAssertSame(Object x, Object y) {
664	>	try {
665	>	assertSame(x, y);
666	>	} catch (AssertionFailedError fail) {
667	>	threadRecordFailure(fail);
668	>	throw fail;
669	>	}
670	>	}
671	>
672	>	/**
673	>	* Calls threadFail with message "should throw exception".
674	>	*/
675		public void threadShouldThrow() {
676	<	threadFailed = true;
259	<	fail("should throw exception");
676	>	threadFail("should throw exception");
677		}
678
679		/**
680	<	* threadFail with message "Unexpected exception"
680	>	* Calls threadFail with message "should throw" + exceptionName.
681		*/
682	<	public void threadUnexpectedException() {
683	<	threadFailed = true;
267	<	fail("Unexpected exception");
682	>	public void threadShouldThrow(String exceptionName) {
683	>	threadFail("should throw " + exceptionName);
684		}
685
686	+	/**
687	+	* Records the given exception using {@link #threadRecordFailure},
688	+	* then rethrows the exception, wrapping it in an
689	+	* AssertionFailedError if necessary.
690	+	*/
691	+	public void threadUnexpectedException(Throwable t) {
692	+	threadRecordFailure(t);
693	+	t.printStackTrace();
694	+	if (t instanceof RuntimeException)
695	+	throw (RuntimeException) t;
696	+	else if (t instanceof Error)
697	+	throw (Error) t;
698	+	else {
699	+	AssertionFailedError afe =
700	+	new AssertionFailedError("unexpected exception: " + t);
701	+	afe.initCause(t);
702	+	throw afe;
703	+	}
704	+	}
705
706		/**
707	<	* Wait out termination of a thread pool or fail doing so
707	>	* Delays, via Thread.sleep, for the given millisecond delay, but
708	>	* if the sleep is shorter than specified, may re-sleep or yield
709	>	* until time elapses.
710		*/
711	<	public void joinPool(ExecutorService exec) {
711	>	static void delay(long millis) throws InterruptedException {
712	>	long startTime = System.nanoTime();
713	>	long ns = millis * 1000 * 1000;
714	>	for (;;) {
715	>	if (millis > 0L)
716	>	Thread.sleep(millis);
717	>	else // too short to sleep
718	>	Thread.yield();
719	>	long d = ns - (System.nanoTime() - startTime);
720	>	if (d > 0L)
721	>	millis = d / (1000 * 1000);
722	>	else
723	>	break;
724	>	}
725	>	}
726	>
727	>	/**
728	>	* Waits out termination of a thread pool or fails doing so.
729	>	*/
730	>	void joinPool(ExecutorService exec) {
731		try {
732		exec.shutdown();
733	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
734	<	} catch(InterruptedException ie) {
735	<	fail("Unexpected exception");
733	>	if (!exec.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS))
734	>	fail("ExecutorService " + exec +
735	>	" did not terminate in a timely manner");
736	>	} catch (SecurityException ok) {
737	>	// Allowed in case test doesn't have privs
738	>	} catch (InterruptedException fail) {
739	>	fail("Unexpected InterruptedException");
740		}
741		}
742
743	+	/**
744	+	* A debugging tool to print all stack traces, as jstack does.
745	+	*/
746	+	static void printAllStackTraces() {
747	+	for (ThreadInfo info :
748	+	ManagementFactory.getThreadMXBean()
749	+	.dumpAllThreads(true, true))
750	+	System.err.print(info);
751	+	}
752
753		/**
754	<	* fail with message "should throw exception"
755	<	*/
754	>	* Checks that thread does not terminate within the default
755	>	* millisecond delay of {@code timeoutMillis()}.
756	>	*/
757	>	void assertThreadStaysAlive(Thread thread) {
758	>	assertThreadStaysAlive(thread, timeoutMillis());
759	>	}
760	>
761	>	/**
762	>	* Checks that thread does not terminate within the given millisecond delay.
763	>	*/
764	>	void assertThreadStaysAlive(Thread thread, long millis) {
765	>	try {
766	>	// No need to optimize the failing case via Thread.join.
767	>	delay(millis);
768	>	assertTrue(thread.isAlive());
769	>	} catch (InterruptedException fail) {
770	>	fail("Unexpected InterruptedException");
771	>	}
772	>	}
773	>
774	>	/**
775	>	* Checks that the threads do not terminate within the default
776	>	* millisecond delay of {@code timeoutMillis()}.
777	>	*/
778	>	void assertThreadsStayAlive(Thread... threads) {
779	>	assertThreadsStayAlive(timeoutMillis(), threads);
780	>	}
781	>
782	>	/**
783	>	* Checks that the threads do not terminate within the given millisecond delay.
784	>	*/
785	>	void assertThreadsStayAlive(long millis, Thread... threads) {
786	>	try {
787	>	// No need to optimize the failing case via Thread.join.
788	>	delay(millis);
789	>	for (Thread thread : threads)
790	>	assertTrue(thread.isAlive());
791	>	} catch (InterruptedException fail) {
792	>	fail("Unexpected InterruptedException");
793	>	}
794	>	}
795	>
796	>	/**
797	>	* Checks that future.get times out, with the default timeout of
798	>	* {@code timeoutMillis()}.
799	>	*/
800	>	void assertFutureTimesOut(Future future) {
801	>	assertFutureTimesOut(future, timeoutMillis());
802	>	}
803	>
804	>	/**
805	>	* Checks that future.get times out, with the given millisecond timeout.
806	>	*/
807	>	void assertFutureTimesOut(Future future, long timeoutMillis) {
808	>	long startTime = System.nanoTime();
809	>	try {
810	>	future.get(timeoutMillis, MILLISECONDS);
811	>	shouldThrow();
812	>	} catch (TimeoutException success) {
813	>	} catch (Exception fail) {
814	>	threadUnexpectedException(fail);
815	>	} finally { future.cancel(true); }
816	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
817	>	}
818	>
819	>	/**
820	>	* Fails with message "should throw exception".
821	>	*/
822		public void shouldThrow() {
823		fail("Should throw exception");
824		}
825
826		/**
827	<	* fail with message "Unexpected exception"
827	>	* Fails with message "should throw " + exceptionName.
828		*/
829	<	public void unexpectedException() {
830	<	fail("Unexpected exception");
829	>	public void shouldThrow(String exceptionName) {
830	>	fail("Should throw " + exceptionName);
831		}
832
298	–
833		/**
834		* The number of elements to place in collections, arrays, etc.
835		*/
836	<	static final int SIZE = 20;
836	>	public static final int SIZE = 20;
837
838		// Some convenient Integer constants
839
840	<	static final Integer zero = new Integer(0);
841	<	static final Integer one = new Integer(1);
842	<	static final Integer two = new Integer(2);
843	<	static final Integer three  = new Integer(3);
844	<	static final Integer four  = new Integer(4);
845	<	static final Integer five  = new Integer(5);
846	<	static final Integer six = new Integer(6);
847	<	static final Integer seven = new Integer(7);
848	<	static final Integer eight = new Integer(8);
849	<	static final Integer nine = new Integer(9);
850	<	static final Integer m1  = new Integer(-1);
851	<	static final Integer m2  = new Integer(-2);
852	<	static final Integer m3  = new Integer(-3);
853	<	static final Integer m4 = new Integer(-4);
854	<	static final Integer m5 = new Integer(-5);
855	<	static final Integer m10 = new Integer(-10);
840	>	public static final Integer zero  = new Integer(0);
841	>	public static final Integer one   = new Integer(1);
842	>	public static final Integer two   = new Integer(2);
843	>	public static final Integer three = new Integer(3);
844	>	public static final Integer four  = new Integer(4);
845	>	public static final Integer five  = new Integer(5);
846	>	public static final Integer six   = new Integer(6);
847	>	public static final Integer seven = new Integer(7);
848	>	public static final Integer eight = new Integer(8);
849	>	public static final Integer nine  = new Integer(9);
850	>	public static final Integer m1  = new Integer(-1);
851	>	public static final Integer m2  = new Integer(-2);
852	>	public static final Integer m3  = new Integer(-3);
853	>	public static final Integer m4  = new Integer(-4);
854	>	public static final Integer m5  = new Integer(-5);
855	>	public static final Integer m6  = new Integer(-6);
856	>	public static final Integer m10 = new Integer(-10);
857	>
858	>	/**
859	>	* Runs Runnable r with a security policy that permits precisely
860	>	* the specified permissions.  If there is no current security
861	>	* manager, the runnable is run twice, both with and without a
862	>	* security manager.  We require that any security manager permit
863	>	* getPolicy/setPolicy.
864	>	*/
865	>	public void runWithPermissions(Runnable r, Permission... permissions) {
866	>	SecurityManager sm = System.getSecurityManager();
867	>	if (sm == null) {
868	>	r.run();
869	>	}
870	>	runWithSecurityManagerWithPermissions(r, permissions);
871	>	}
872
873	+	/**
874	+	* Runs Runnable r with a security policy that permits precisely
875	+	* the specified permissions.  If there is no current security
876	+	* manager, a temporary one is set for the duration of the
877	+	* Runnable.  We require that any security manager permit
878	+	* getPolicy/setPolicy.
879	+	*/
880	+	public void runWithSecurityManagerWithPermissions(Runnable r,
881	+	Permission... permissions) {
882	+	SecurityManager sm = System.getSecurityManager();
883	+	if (sm == null) {
884	+	Policy savedPolicy = Policy.getPolicy();
885	+	try {
886	+	Policy.setPolicy(permissivePolicy());
887	+	System.setSecurityManager(new SecurityManager());
888	+	runWithSecurityManagerWithPermissions(r, permissions);
889	+	} finally {
890	+	System.setSecurityManager(null);
891	+	Policy.setPolicy(savedPolicy);
892	+	}
893	+	} else {
894	+	Policy savedPolicy = Policy.getPolicy();
895	+	AdjustablePolicy policy = new AdjustablePolicy(permissions);
896	+	Policy.setPolicy(policy);
897	+
898	+	try {
899	+	r.run();
900	+	} finally {
901	+	policy.addPermission(new SecurityPermission("setPolicy"));
902	+	Policy.setPolicy(savedPolicy);
903	+	}
904	+	}
905	+	}
906	+
907	+	/**
908	+	* Runs a runnable without any permissions.
909	+	*/
910	+	public void runWithoutPermissions(Runnable r) {
911	+	runWithPermissions(r);
912	+	}
913
914		/**
915		* A security policy where new permissions can be dynamically added
916		* or all cleared.
917		*/
918	<	static class AdjustablePolicy extends java.security.Policy {
918	>	public static class AdjustablePolicy extends java.security.Policy {
919		Permissions perms = new Permissions();
920	<	AdjustablePolicy() { }
920	>	AdjustablePolicy(Permission... permissions) {
921	>	for (Permission permission : permissions)
922	>	perms.add(permission);
923	>	}
924		void addPermission(Permission perm) { perms.add(perm); }
925		void clearPermissions() { perms = new Permissions(); }
926	<	public PermissionCollection getPermissions(CodeSource cs) {
927	<	return perms;
928	<	}
929	<	public PermissionCollection getPermissions(ProtectionDomain pd) {
930	<	return perms;
931	<	}
932	<	public boolean implies(ProtectionDomain pd, Permission p) {
933	<	return perms.implies(p);
934	<	}
935	<	public void refresh() {}
926	>	public PermissionCollection getPermissions(CodeSource cs) {
927	>	return perms;
928	>	}
929	>	public PermissionCollection getPermissions(ProtectionDomain pd) {
930	>	return perms;
931	>	}
932	>	public boolean implies(ProtectionDomain pd, Permission p) {
933	>	return perms.implies(p);
934	>	}
935	>	public void refresh() {}
936	>	public String toString() {
937	>	List<Permission> ps = new ArrayList<Permission>();
938	>	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
939	>	ps.add(e.nextElement());
940	>	return "AdjustablePolicy with permissions " + ps;
941	>	}
942	>	}
943	>
944	>	/**
945	>	* Returns a policy containing all the permissions we ever need.
946	>	*/
947	>	public static Policy permissivePolicy() {
948	>	return new AdjustablePolicy
949	>	// Permissions j.u.c. needs directly
950	>	(new RuntimePermission("modifyThread"),
951	>	new RuntimePermission("getClassLoader"),
952	>	new RuntimePermission("setContextClassLoader"),
953	>	// Permissions needed to change permissions!
954	>	new SecurityPermission("getPolicy"),
955	>	new SecurityPermission("setPolicy"),
956	>	new RuntimePermission("setSecurityManager"),
957	>	// Permissions needed by the junit test harness
958	>	new RuntimePermission("accessDeclaredMembers"),
959	>	new PropertyPermission("*", "read"),
960	>	new java.io.FilePermission("<<ALL FILES>>", "read"));
961		}
962
963	+	/**
964	+	* Sleeps until the given time has elapsed.
965	+	* Throws AssertionFailedError if interrupted.
966	+	*/
967	+	void sleep(long millis) {
968	+	try {
969	+	delay(millis);
970	+	} catch (InterruptedException fail) {
971	+	AssertionFailedError afe =
972	+	new AssertionFailedError("Unexpected InterruptedException");
973	+	afe.initCause(fail);
974	+	throw afe;
975	+	}
976	+	}
977
978	<	// Some convenient Runnable classes
978	>	/**
979	>	* Spin-waits up to the specified number of milliseconds for the given
980	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
981	>	*/
982	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
983	>	long startTime = System.nanoTime();
984	>	for (;;) {
985	>	Thread.State s = thread.getState();
986	>	if (s == Thread.State.BLOCKED ||
987	>	s == Thread.State.WAITING ||
988	>	s == Thread.State.TIMED_WAITING)
989	>	return;
990	>	else if (s == Thread.State.TERMINATED)
991	>	fail("Unexpected thread termination");
992	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
993	>	threadAssertTrue(thread.isAlive());
994	>	return;
995	>	}
996	>	Thread.yield();
997	>	}
998	>	}
999
1000	<	static class NoOpRunnable implements Runnable {
1001	<	public void run() {}
1000	>	/**
1001	>	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
1002	>	* state: BLOCKED, WAITING, or TIMED_WAITING.
1003	>	*/
1004	>	void waitForThreadToEnterWaitState(Thread thread) {
1005	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
1006		}
1007
1008	<	static class NoOpCallable implements Callable {
1009	<	public Object call() { return Boolean.TRUE; }
1008	>	/**
1009	>	* Returns the number of milliseconds since time given by
1010	>	* startNanoTime, which must have been previously returned from a
1011	>	* call to {@link System#nanoTime()}.
1012	>	*/
1013	>	static long millisElapsedSince(long startNanoTime) {
1014	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1015		}
1016
1017	<	static final String TEST_STRING = "a test string";
1017	>	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1018	>	//         long startTime = System.nanoTime();
1019	>	//         try {
1020	>	//             r.run();
1021	>	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1022	>	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1023	>	//             throw new AssertionFailedError("did not return promptly");
1024	>	//     }
1025	>
1026	>	//     void assertTerminatesPromptly(Runnable r) {
1027	>	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1028	>	//     }
1029
1030	<	static class StringTask implements Callable<String> {
1031	<	public String call() { return TEST_STRING; }
1030	>	/**
1031	>	* Checks that timed f.get() returns the expected value, and does not
1032	>	* wait for the timeout to elapse before returning.
1033	>	*/
1034	>	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1035	>	long startTime = System.nanoTime();
1036	>	try {
1037	>	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1038	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1039	>	if (millisElapsedSince(startTime) > timeoutMillis/2)
1040	>	throw new AssertionFailedError("timed get did not return promptly");
1041		}
1042
1043	<	static class NPETask implements Callable<String> {
1044	<	public String call() { throw new NullPointerException(); }
1043	>	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1044	>	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1045		}
1046
1047	<	static class CallableOne implements Callable<Integer> {
1048	<	public Integer call() { return one; }
1047	>	/**
1048	>	* Returns a new started daemon Thread running the given runnable.
1049	>	*/
1050	>	Thread newStartedThread(Runnable runnable) {
1051	>	Thread t = new Thread(runnable);
1052	>	t.setDaemon(true);
1053	>	t.start();
1054	>	return t;
1055		}
1056
1057	<	class ShortRunnable implements Runnable {
1058	<	public void run() {
1059	<	try {
1060	<	Thread.sleep(SHORT_DELAY_MS);
1061	<	}
1062	<	catch(Exception e) {
1063	<	threadUnexpectedException();
1057	>	/**
1058	>	* Waits for the specified time (in milliseconds) for the thread
1059	>	* to terminate (using {@link Thread#join(long)}), else interrupts
1060	>	* the thread (in the hope that it may terminate later) and fails.
1061	>	*/
1062	>	void awaitTermination(Thread t, long timeoutMillis) {
1063	>	try {
1064	>	t.join(timeoutMillis);
1065	>	} catch (InterruptedException fail) {
1066	>	threadUnexpectedException(fail);
1067	>	} finally {
1068	>	if (t.getState() != Thread.State.TERMINATED) {
1069	>	t.interrupt();
1070	>	fail("Test timed out");
1071		}
1072		}
1073		}
1074
1075	<	class ShortInterruptedRunnable implements Runnable {
1076	<	public void run() {
1075	>	/**
1076	>	* Waits for LONG_DELAY_MS milliseconds for the thread to
1077	>	* terminate (using {@link Thread#join(long)}), else interrupts
1078	>	* the thread (in the hope that it may terminate later) and fails.
1079	>	*/
1080	>	void awaitTermination(Thread t) {
1081	>	awaitTermination(t, LONG_DELAY_MS);
1082	>	}
1083	>
1084	>	// Some convenient Runnable classes
1085	>
1086	>	public abstract class CheckedRunnable implements Runnable {
1087	>	protected abstract void realRun() throws Throwable;
1088	>
1089	>	public final void run() {
1090		try {
1091	<	Thread.sleep(SHORT_DELAY_MS);
1092	<	threadShouldThrow();
1093	<	}
387	<	catch(InterruptedException success) {
1091	>	realRun();
1092	>	} catch (Throwable fail) {
1093	>	threadUnexpectedException(fail);
1094		}
1095		}
1096		}
1097
1098	<	class SmallRunnable implements Runnable {
1099	<	public void run() {
1098	>	public abstract class RunnableShouldThrow implements Runnable {
1099	>	protected abstract void realRun() throws Throwable;
1100	>
1101	>	final Class<?> exceptionClass;
1102	>
1103	>	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
1104	>	this.exceptionClass = exceptionClass;
1105	>	}
1106	>
1107	>	public final void run() {
1108		try {
1109	<	Thread.sleep(SMALL_DELAY_MS);
1110	<	}
1111	<	catch(Exception e) {
1112	<	threadUnexpectedException();
1109	>	realRun();
1110	>	threadShouldThrow(exceptionClass.getSimpleName());
1111	>	} catch (Throwable t) {
1112	>	if (! exceptionClass.isInstance(t))
1113	>	threadUnexpectedException(t);
1114		}
1115		}
1116		}
1117
1118	<	class SmallPossiblyInterruptedRunnable implements Runnable {
1119	<	public void run() {
1118	>	public abstract class ThreadShouldThrow extends Thread {
1119	>	protected abstract void realRun() throws Throwable;
1120	>
1121	>	final Class<?> exceptionClass;
1122	>
1123	>	<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) {
1124	>	this.exceptionClass = exceptionClass;
1125	>	}
1126	>
1127	>	public final void run() {
1128		try {
1129	<	Thread.sleep(SMALL_DELAY_MS);
1130	<	}
1131	<	catch(Exception e) {
1129	>	realRun();
1130	>	threadShouldThrow(exceptionClass.getSimpleName());
1131	>	} catch (Throwable t) {
1132	>	if (! exceptionClass.isInstance(t))
1133	>	threadUnexpectedException(t);
1134		}
1135		}
1136		}
1137
1138	<	class SmallCallable implements Callable {
1139	<	public Object call() {
1138	>	public abstract class CheckedInterruptedRunnable implements Runnable {
1139	>	protected abstract void realRun() throws Throwable;
1140	>
1141	>	public final void run() {
1142		try {
1143	<	Thread.sleep(SMALL_DELAY_MS);
1144	<	}
1145	<	catch(Exception e) {
1146	<	threadUnexpectedException();
1143	>	realRun();
1144	>	threadShouldThrow("InterruptedException");
1145	>	} catch (InterruptedException success) {
1146	>	threadAssertFalse(Thread.interrupted());
1147	>	} catch (Throwable fail) {
1148	>	threadUnexpectedException(fail);
1149		}
421	–	return Boolean.TRUE;
1150		}
1151		}
1152
1153	<	class SmallInterruptedRunnable implements Runnable {
1154	<	public void run() {
1153	>	public abstract class CheckedCallable<T> implements Callable<T> {
1154	>	protected abstract T realCall() throws Throwable;
1155	>
1156	>	public final T call() {
1157		try {
1158	<	Thread.sleep(SMALL_DELAY_MS);
1159	<	threadShouldThrow();
1160	<	}
1161	<	catch(InterruptedException success) {
1158	>	return realCall();
1159	>	} catch (Throwable fail) {
1160	>	threadUnexpectedException(fail);
1161	>	return null;
1162		}
1163		}
1164		}
1165
1166	+	public abstract class CheckedInterruptedCallable<T>
1167	+	implements Callable<T> {
1168	+	protected abstract T realCall() throws Throwable;
1169
1170	<	class MediumRunnable implements Runnable {
438	<	public void run() {
1170	>	public final T call() {
1171		try {
1172	<	Thread.sleep(MEDIUM_DELAY_MS);
1173	<	}
1174	<	catch(Exception e) {
1175	<	threadUnexpectedException();
1172	>	T result = realCall();
1173	>	threadShouldThrow("InterruptedException");
1174	>	return result;
1175	>	} catch (InterruptedException success) {
1176	>	threadAssertFalse(Thread.interrupted());
1177	>	} catch (Throwable fail) {
1178	>	threadUnexpectedException(fail);
1179		}
1180	+	return null;
1181		}
1182		}
1183
1184	<	class MediumInterruptedRunnable implements Runnable {
1185	<	public void run() {
1184	>	public static class NoOpRunnable implements Runnable {
1185	>	public void run() {}
1186	>	}
1187	>
1188	>	public static class NoOpCallable implements Callable {
1189	>	public Object call() { return Boolean.TRUE; }
1190	>	}
1191	>
1192	>	public static final String TEST_STRING = "a test string";
1193	>
1194	>	public static class StringTask implements Callable<String> {
1195	>	public String call() { return TEST_STRING; }
1196	>	}
1197	>
1198	>	public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1199	>	return new CheckedCallable<String>() {
1200	>	protected String realCall() {
1201	>	try {
1202	>	latch.await();
1203	>	} catch (InterruptedException quittingTime) {}
1204	>	return TEST_STRING;
1205	>	}};
1206	>	}
1207	>
1208	>	public Runnable awaiter(final CountDownLatch latch) {
1209	>	return new CheckedRunnable() {
1210	>	public void realRun() throws InterruptedException {
1211	>	await(latch);
1212	>	}};
1213	>	}
1214	>
1215	>	public void await(CountDownLatch latch) {
1216	>	try {
1217	>	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1218	>	} catch (Throwable fail) {
1219	>	threadUnexpectedException(fail);
1220	>	}
1221	>	}
1222	>
1223	>	public void await(Semaphore semaphore) {
1224	>	try {
1225	>	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1226	>	} catch (Throwable fail) {
1227	>	threadUnexpectedException(fail);
1228	>	}
1229	>	}
1230	>
1231	>	//     /**
1232	>	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1233	>	//      */
1234	>	//     public void await(AtomicBoolean flag) {
1235	>	//         await(flag, LONG_DELAY_MS);
1236	>	//     }
1237	>
1238	>	//     /**
1239	>	//      * Spin-waits up to the specified timeout until flag becomes true.
1240	>	//      */
1241	>	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1242	>	//         long startTime = System.nanoTime();
1243	>	//         while (!flag.get()) {
1244	>	//             if (millisElapsedSince(startTime) > timeoutMillis)
1245	>	//                 throw new AssertionFailedError("timed out");
1246	>	//             Thread.yield();
1247	>	//         }
1248	>	//     }
1249	>
1250	>	public static class NPETask implements Callable<String> {
1251	>	public String call() { throw new NullPointerException(); }
1252	>	}
1253	>
1254	>	public static class CallableOne implements Callable<Integer> {
1255	>	public Integer call() { return one; }
1256	>	}
1257	>
1258	>	public class ShortRunnable extends CheckedRunnable {
1259	>	protected void realRun() throws Throwable {
1260	>	delay(SHORT_DELAY_MS);
1261	>	}
1262	>	}
1263	>
1264	>	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1265	>	protected void realRun() throws InterruptedException {
1266	>	delay(SHORT_DELAY_MS);
1267	>	}
1268	>	}
1269	>
1270	>	public class SmallRunnable extends CheckedRunnable {
1271	>	protected void realRun() throws Throwable {
1272	>	delay(SMALL_DELAY_MS);
1273	>	}
1274	>	}
1275	>
1276	>	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1277	>	protected void realRun() {
1278		try {
1279	<	Thread.sleep(MEDIUM_DELAY_MS);
1280	<	threadShouldThrow();
453	<	}
454	<	catch(InterruptedException success) {
455	<	}
1279	>	delay(SMALL_DELAY_MS);
1280	>	} catch (InterruptedException ok) {}
1281		}
1282		}
1283
1284	<	class MediumPossiblyInterruptedRunnable implements Runnable {
1285	<	public void run() {
1284	>	public class SmallCallable extends CheckedCallable {
1285	>	protected Object realCall() throws InterruptedException {
1286	>	delay(SMALL_DELAY_MS);
1287	>	return Boolean.TRUE;
1288	>	}
1289	>	}
1290	>
1291	>	public class MediumRunnable extends CheckedRunnable {
1292	>	protected void realRun() throws Throwable {
1293	>	delay(MEDIUM_DELAY_MS);
1294	>	}
1295	>	}
1296	>
1297	>	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1298	>	protected void realRun() throws InterruptedException {
1299	>	delay(MEDIUM_DELAY_MS);
1300	>	}
1301	>	}
1302	>
1303	>	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1304	>	return new CheckedRunnable() {
1305	>	protected void realRun() {
1306	>	try {
1307	>	delay(timeoutMillis);
1308	>	} catch (InterruptedException ok) {}
1309	>	}};
1310	>	}
1311	>
1312	>	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1313	>	protected void realRun() {
1314		try {
1315	<	Thread.sleep(MEDIUM_DELAY_MS);
1316	<	}
1317	<	catch(InterruptedException success) {
1318	<	}
1315	>	delay(MEDIUM_DELAY_MS);
1316	>	} catch (InterruptedException ok) {}
1317	>	}
1318	>	}
1319	>
1320	>	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1321	>	protected void realRun() {
1322	>	try {
1323	>	delay(LONG_DELAY_MS);
1324	>	} catch (InterruptedException ok) {}
1325		}
1326		}
1327
1328		/**
1329		* For use as ThreadFactory in constructors
1330		*/
1331	<	static class SimpleThreadFactory implements ThreadFactory{
1332	<	public Thread newThread(Runnable r){
1331	>	public static class SimpleThreadFactory implements ThreadFactory {
1332	>	public Thread newThread(Runnable r) {
1333		return new Thread(r);
1334	<	}
1334	>	}
1335		}
1336
1337	<	static class TrackedShortRunnable implements Runnable {
1338	<	volatile boolean done = false;
1337	>	public interface TrackedRunnable extends Runnable {
1338	>	boolean isDone();
1339	>	}
1340	>
1341	>	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1342	>	return new TrackedRunnable() {
1343	>	private volatile boolean done = false;
1344	>	public boolean isDone() { return done; }
1345	>	public void run() {
1346	>	try {
1347	>	delay(timeoutMillis);
1348	>	done = true;
1349	>	} catch (InterruptedException ok) {}
1350	>	}
1351	>	};
1352	>	}
1353	>
1354	>	public static class TrackedShortRunnable implements Runnable {
1355	>	public volatile boolean done = false;
1356		public void run() {
1357		try {
1358	<	Thread.sleep(SMALL_DELAY_MS);
1358	>	delay(SHORT_DELAY_MS);
1359		done = true;
1360	<	} catch(Exception e){
485	<	}
1360	>	} catch (InterruptedException ok) {}
1361		}
1362		}
1363
1364	<	static class TrackedMediumRunnable implements Runnable {
1365	<	volatile boolean done = false;
1364	>	public static class TrackedSmallRunnable implements Runnable {
1365	>	public volatile boolean done = false;
1366		public void run() {
1367		try {
1368	<	Thread.sleep(MEDIUM_DELAY_MS);
1368	>	delay(SMALL_DELAY_MS);
1369		done = true;
1370	<	} catch(Exception e){
496	<	}
1370	>	} catch (InterruptedException ok) {}
1371		}
1372		}
1373
1374	<	static class TrackedLongRunnable implements Runnable {
1375	<	volatile boolean done = false;
1374	>	public static class TrackedMediumRunnable implements Runnable {
1375	>	public volatile boolean done = false;
1376		public void run() {
1377		try {
1378	<	Thread.sleep(LONG_DELAY_MS);
1378	>	delay(MEDIUM_DELAY_MS);
1379		done = true;
1380	<	} catch(Exception e){
507	<	}
1380	>	} catch (InterruptedException ok) {}
1381		}
1382		}
1383
1384	<	static class TrackedNoOpRunnable implements Runnable {
1385	<	volatile boolean done = false;
1384	>	public static class TrackedLongRunnable implements Runnable {
1385	>	public volatile boolean done = false;
1386	>	public void run() {
1387	>	try {
1388	>	delay(LONG_DELAY_MS);
1389	>	done = true;
1390	>	} catch (InterruptedException ok) {}
1391	>	}
1392	>	}
1393	>
1394	>	public static class TrackedNoOpRunnable implements Runnable {
1395	>	public volatile boolean done = false;
1396		public void run() {
1397		done = true;
1398		}
1399		}
1400
1401	<	static class TrackedCallable implements Callable {
1402	<	volatile boolean done = false;
1401	>	public static class TrackedCallable implements Callable {
1402	>	public volatile boolean done = false;
1403		public Object call() {
1404		try {
1405	<	Thread.sleep(SMALL_DELAY_MS);
1405	>	delay(SMALL_DELAY_MS);
1406		done = true;
1407	<	} catch(Exception e){
525	<	}
1407	>	} catch (InterruptedException ok) {}
1408		return Boolean.TRUE;
1409		}
1410		}
1411
1412		/**
1413	+	* Analog of CheckedRunnable for RecursiveAction
1414	+	*/
1415	+	public abstract class CheckedRecursiveAction extends RecursiveAction {
1416	+	protected abstract void realCompute() throws Throwable;
1417	+
1418	+	@Override protected final void compute() {
1419	+	try {
1420	+	realCompute();
1421	+	} catch (Throwable fail) {
1422	+	threadUnexpectedException(fail);
1423	+	}
1424	+	}
1425	+	}
1426	+
1427	+	/**
1428	+	* Analog of CheckedCallable for RecursiveTask
1429	+	*/
1430	+	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1431	+	protected abstract T realCompute() throws Throwable;
1432	+
1433	+	@Override protected final T compute() {
1434	+	try {
1435	+	return realCompute();
1436	+	} catch (Throwable fail) {
1437	+	threadUnexpectedException(fail);
1438	+	return null;
1439	+	}
1440	+	}
1441	+	}
1442	+
1443	+	/**
1444		* For use as RejectedExecutionHandler in constructors
1445		*/
1446	<	static class NoOpREHandler implements RejectedExecutionHandler{
1447	<	public void rejectedExecution(Runnable r, ThreadPoolExecutor executor){}
1446	>	public static class NoOpREHandler implements RejectedExecutionHandler {
1447	>	public void rejectedExecution(Runnable r,
1448	>	ThreadPoolExecutor executor) {}
1449	>	}
1450	>
1451	>	/**
1452	>	* A CyclicBarrier that uses timed await and fails with
1453	>	* AssertionFailedErrors instead of throwing checked exceptions.
1454	>	*/
1455	>	public class CheckedBarrier extends CyclicBarrier {
1456	>	public CheckedBarrier(int parties) { super(parties); }
1457	>
1458	>	public int await() {
1459	>	try {
1460	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1461	>	} catch (TimeoutException timedOut) {
1462	>	throw new AssertionFailedError("timed out");
1463	>	} catch (Exception fail) {
1464	>	AssertionFailedError afe =
1465	>	new AssertionFailedError("Unexpected exception: " + fail);
1466	>	afe.initCause(fail);
1467	>	throw afe;
1468	>	}
1469	>	}
1470	>	}
1471	>
1472	>	void checkEmpty(BlockingQueue q) {
1473	>	try {
1474	>	assertTrue(q.isEmpty());
1475	>	assertEquals(0, q.size());
1476	>	assertNull(q.peek());
1477	>	assertNull(q.poll());
1478	>	assertNull(q.poll(0, MILLISECONDS));
1479	>	assertEquals(q.toString(), "[]");
1480	>	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1481	>	assertFalse(q.iterator().hasNext());
1482	>	try {
1483	>	q.element();
1484	>	shouldThrow();
1485	>	} catch (NoSuchElementException success) {}
1486	>	try {
1487	>	q.iterator().next();
1488	>	shouldThrow();
1489	>	} catch (NoSuchElementException success) {}
1490	>	try {
1491	>	q.remove();
1492	>	shouldThrow();
1493	>	} catch (NoSuchElementException success) {}
1494	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1495	>	}
1496	>
1497	>	void assertSerialEquals(Object x, Object y) {
1498	>	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1499	>	}
1500	>
1501	>	void assertNotSerialEquals(Object x, Object y) {
1502	>	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1503	>	}
1504	>
1505	>	byte[] serialBytes(Object o) {
1506	>	try {
1507	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1508	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1509	>	oos.writeObject(o);
1510	>	oos.flush();
1511	>	oos.close();
1512	>	return bos.toByteArray();
1513	>	} catch (Throwable fail) {
1514	>	threadUnexpectedException(fail);
1515	>	return new byte[0];
1516	>	}
1517	>	}
1518	>
1519	>	@SuppressWarnings("unchecked")
1520	>	<T> T serialClone(T o) {
1521	>	try {
1522	>	ObjectInputStream ois = new ObjectInputStream
1523	>	(new ByteArrayInputStream(serialBytes(o)));
1524	>	T clone = (T) ois.readObject();
1525	>	assertSame(o.getClass(), clone.getClass());
1526	>	return clone;
1527	>	} catch (Throwable fail) {
1528	>	threadUnexpectedException(fail);
1529	>	return null;
1530	>	}
1531	>	}
1532	>
1533	>	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1534	>	Runnable... throwingActions) {
1535	>	for (Runnable throwingAction : throwingActions) {
1536	>	boolean threw = false;
1537	>	try { throwingAction.run(); }
1538	>	catch (Throwable t) {
1539	>	threw = true;
1540	>	if (!expectedExceptionClass.isInstance(t)) {
1541	>	AssertionFailedError afe =
1542	>	new AssertionFailedError
1543	>	("Expected " + expectedExceptionClass.getName() +
1544	>	", got " + t.getClass().getName());
1545	>	afe.initCause(t);
1546	>	threadUnexpectedException(afe);
1547	>	}
1548	>	}
1549	>	if (!threw)
1550	>	shouldThrow(expectedExceptionClass.getName());
1551	>	}
1552	>	}
1553	>
1554	>	public void assertIteratorExhausted(Iterator<?> it) {
1555	>	try {
1556	>	it.next();
1557	>	shouldThrow();
1558	>	} catch (NoSuchElementException success) {}
1559	>	assertFalse(it.hasNext());
1560		}
536	–
537	–
1561		}

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