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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.3 by dl, Sat Sep 20 18:20:08 2003 UTC vs.
Revision 1.60 by jsr166, Wed Oct 6 07:49:22 2010 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/licenses/publicdomain
5	>	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	>	* Pat Fisher, Mike Judd.
7		*/
8
9		import junit.framework.*;
10	<	import java.util.*;
10	>	import java.util.PropertyPermission;
11		import java.util.concurrent.*;
12	<	import java.io.*;
13	<
12	>	import java.util.concurrent.atomic.AtomicReference;
13	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
14	>	import java.security.CodeSource;
15	>	import java.security.Permission;
16	>	import java.security.PermissionCollection;
17	>	import java.security.Permissions;
18	>	import java.security.Policy;
19	>	import java.security.ProtectionDomain;
20	>	import java.security.SecurityPermission;
21
22		/**
23	<	* Base class for JSR166 Junit TCK tests.  Defines some constants and
24	<	* utility methods, as well as a simple framework for helping to make
25	<	* sure that assertions failing in generated threads cause the
26	<	* associated test that generated them to itself fail (which JUnit doe
27	<	* not otherwise arrange).  The rules for creating such tests are:
23	>	* Base class for JSR166 Junit TCK tests.  Defines some constants,
24	>	* utility methods and classes, as well as a simple framework for
25	>	* helping to make sure that assertions failing in generated threads
26	>	* cause the associated test that generated them to itself fail (which
27	>	* JUnit does not otherwise arrange).  The rules for creating such
28	>	* tests are:
29		*
30		* <ol>
31		*
32		* <li> All assertions in code running in generated threads must use
33	<	* the forms {@link threadFail} , {@link threadAssertTrue} {@link
34	<	* threadAssertEquals}, or {@link threadAssertNull}, (not
35	<	* <tt>fail</tt>, <tt>assertTrue</tt>, etc.) It is OK (but not
33	>	* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
34	>	* #threadAssertEquals}, or {@link #threadAssertNull}, (not
35	>	* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
36		* particularly recommended) for other code to use these forms too.
37		* Only the most typically used JUnit assertion methods are defined
38		* this way, but enough to live with.</li>
39		*
40	<	* <li> If you override {@link setUp} or {@link tearDown}, make sure
41	<	* to invoke <tt>super.setUp</tt> and <tt>super.tearDown</tt> within
40	>	* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
41	>	* to invoke {@code super.setUp} and {@code super.tearDown} within
42		* them. These methods are used to clear and check for thread
43		* assertion failures.</li>
44		*
45	<	* <li>All delays and timeouts must use one of the constants {@link
46	<	* SHORT_DELAY_MS}, {@link SMALL_DELAY_MS}, {@link MEDIUM_DELAY_MS},
47	<	* {@link LONG_DELAY_MS}. The idea here is that a SHORT is always
48	<	* discriminatable from zero time, and always allows enough time for
49	<	* the small amounts of computation (creating a thread, calling a few
45	>	* <li>All delays and timeouts must use one of the constants {@code
46	>	* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
47	>	* {@code LONG_DELAY_MS}. The idea here is that a SHORT is always
48	>	* discriminable from zero time, and always allows enough time for the
49	>	* small amounts of computation (creating a thread, calling a few
50		* methods, etc) needed to reach a timeout point. Similarly, a SMALL
51		* is always discriminable as larger than SHORT and smaller than
52		* MEDIUM.  And so on. These constants are set to conservative values,
53		* but even so, if there is ever any doubt, they can all be increased
54	<	* in one spot to rerun tests on slower platforms</li>
54	>	* in one spot to rerun tests on slower platforms.</li>
55		*
56		* <li> All threads generated must be joined inside each test case
57	<	* method (or <tt>fail</tt> to do so) before returning from the
58	<	* method. The {@link joinPool} method can be used to do this when
57	>	* method (or {@code fail} to do so) before returning from the
58	>	* method. The {@code joinPool} method can be used to do this when
59		* using Executors.</li>
60		*
61		* </ol>
62	+	*
63	+	* <p> <b>Other notes</b>
64	+	* <ul>
65	+	*
66	+	* <li> Usually, there is one testcase method per JSR166 method
67	+	* covering "normal" operation, and then as many exception-testing
68	+	* methods as there are exceptions the method can throw. Sometimes
69	+	* there are multiple tests per JSR166 method when the different
70	+	* "normal" behaviors differ significantly. And sometimes testcases
71	+	* cover multiple methods when they cannot be tested in
72	+	* isolation.</li>
73	+	*
74	+	* <li> The documentation style for testcases is to provide as javadoc
75	+	* a simple sentence or two describing the property that the testcase
76	+	* method purports to test. The javadocs do not say anything about how
77	+	* the property is tested. To find out, read the code.</li>
78	+	*
79	+	* <li> These tests are "conformance tests", and do not attempt to
80	+	* test throughput, latency, scalability or other performance factors
81	+	* (see the separate "jtreg" tests for a set intended to check these
82	+	* for the most central aspects of functionality.) So, most tests use
83	+	* the smallest sensible numbers of threads, collection sizes, etc
84	+	* needed to check basic conformance.</li>
85	+	*
86	+	* <li>The test classes currently do not declare inclusion in
87	+	* any particular package to simplify things for people integrating
88	+	* them in TCK test suites.</li>
89	+	*
90	+	* <li> As a convenience, the {@code main} of this class (JSR166TestCase)
91	+	* runs all JSR166 unit tests.</li>
92	+	*
93	+	* </ul>
94		*/
95		public class JSR166TestCase extends TestCase {
96	+	private static final boolean useSecurityManager =
97	+	Boolean.getBoolean("jsr166.useSecurityManager");
98	+
99	+	/**
100	+	* Runs all JSR166 unit tests using junit.textui.TestRunner
101	+	*/
102	+	public static void main(String[] args) {
103	+	if (useSecurityManager) {
104	+	System.err.println("Setting a permissive security manager");
105	+	Policy.setPolicy(permissivePolicy());
106	+	System.setSecurityManager(new SecurityManager());
107	+	}
108	+	int iters = (args.length == 0) ? 1 : Integer.parseInt(args[0]);
109	+
110	+	Test s = suite();
111	+	for (int i = 0; i < iters; ++i) {
112	+	junit.textui.TestRunner.run(s);
113	+	System.gc();
114	+	System.runFinalization();
115	+	}
116	+	System.exit(0);
117	+	}
118	+
119	+	public static TestSuite newTestSuite(Object... suiteOrClasses) {
120	+	TestSuite suite = new TestSuite();
121	+	for (Object suiteOrClass : suiteOrClasses) {
122	+	if (suiteOrClass instanceof TestSuite)
123	+	suite.addTest((TestSuite) suiteOrClass);
124	+	else if (suiteOrClass instanceof Class)
125	+	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
126	+	else
127	+	throw new ClassCastException("not a test suite or class");
128	+	}
129	+	return suite;
130	+	}
131	+
132	+	/**
133	+	* Collects all JSR166 unit tests as one suite.
134	+	*/
135	+	public static Test suite() {
136	+	return newTestSuite(
137	+	ForkJoinPoolTest.suite(),
138	+	ForkJoinTaskTest.suite(),
139	+	RecursiveActionTest.suite(),
140	+	RecursiveTaskTest.suite(),
141	+	LinkedTransferQueueTest.suite(),
142	+	PhaserTest.suite(),
143	+	ThreadLocalRandomTest.suite(),
144	+	AbstractExecutorServiceTest.suite(),
145	+	AbstractQueueTest.suite(),
146	+	AbstractQueuedSynchronizerTest.suite(),
147	+	AbstractQueuedLongSynchronizerTest.suite(),
148	+	ArrayBlockingQueueTest.suite(),
149	+	ArrayDequeTest.suite(),
150	+	AtomicBooleanTest.suite(),
151	+	AtomicIntegerArrayTest.suite(),
152	+	AtomicIntegerFieldUpdaterTest.suite(),
153	+	AtomicIntegerTest.suite(),
154	+	AtomicLongArrayTest.suite(),
155	+	AtomicLongFieldUpdaterTest.suite(),
156	+	AtomicLongTest.suite(),
157	+	AtomicMarkableReferenceTest.suite(),
158	+	AtomicReferenceArrayTest.suite(),
159	+	AtomicReferenceFieldUpdaterTest.suite(),
160	+	AtomicReferenceTest.suite(),
161	+	AtomicStampedReferenceTest.suite(),
162	+	ConcurrentHashMapTest.suite(),
163	+	ConcurrentLinkedDequeTest.suite(),
164	+	ConcurrentLinkedQueueTest.suite(),
165	+	ConcurrentSkipListMapTest.suite(),
166	+	ConcurrentSkipListSubMapTest.suite(),
167	+	ConcurrentSkipListSetTest.suite(),
168	+	ConcurrentSkipListSubSetTest.suite(),
169	+	CopyOnWriteArrayListTest.suite(),
170	+	CopyOnWriteArraySetTest.suite(),
171	+	CountDownLatchTest.suite(),
172	+	CyclicBarrierTest.suite(),
173	+	DelayQueueTest.suite(),
174	+	EntryTest.suite(),
175	+	ExchangerTest.suite(),
176	+	ExecutorsTest.suite(),
177	+	ExecutorCompletionServiceTest.suite(),
178	+	FutureTaskTest.suite(),
179	+	LinkedBlockingDequeTest.suite(),
180	+	LinkedBlockingQueueTest.suite(),
181	+	LinkedListTest.suite(),
182	+	LockSupportTest.suite(),
183	+	PriorityBlockingQueueTest.suite(),
184	+	PriorityQueueTest.suite(),
185	+	ReentrantLockTest.suite(),
186	+	ReentrantReadWriteLockTest.suite(),
187	+	ScheduledExecutorTest.suite(),
188	+	ScheduledExecutorSubclassTest.suite(),
189	+	SemaphoreTest.suite(),
190	+	SynchronousQueueTest.suite(),
191	+	SystemTest.suite(),
192	+	ThreadLocalTest.suite(),
193	+	ThreadPoolExecutorTest.suite(),
194	+	ThreadPoolExecutorSubclassTest.suite(),
195	+	ThreadTest.suite(),
196	+	TimeUnitTest.suite(),
197	+	TreeMapTest.suite(),
198	+	TreeSetTest.suite(),
199	+	TreeSubMapTest.suite(),
200	+	TreeSubSetTest.suite());
201	+	}
202	+
203
204		public static long SHORT_DELAY_MS;
205		public static long SMALL_DELAY_MS;
#	Line 60 | Line 208 | public class JSR166TestCase extends Test
208
209
210		/**
211	<	* Return the shortest timed delay. This could
212	<	* be reimplmented to use for example a Property.
213	<	*/
211	>	* Returns the shortest timed delay. This could
212	>	* be reimplemented to use for example a Property.
213	>	*/
214		protected long getShortDelay() {
215		return 50;
216		}
217
218
219		/**
220	<	* Set delays as multiples fo SHORT_DELAY.
220	>	* Sets delays as multiples of SHORT_DELAY.
221		*/
222	<	protected  void setDelays() {
222	>	protected void setDelays() {
223		SHORT_DELAY_MS = getShortDelay();
224	<	SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
224	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
225		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
226	<	LONG_DELAY_MS = SHORT_DELAY_MS * 50;
226	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 50;
227		}
228
229		/**
230	<	* Flag set true if any threadAssert methods fail
230	>	* The first exception encountered if any threadAssertXXX method fails.
231		*/
232	<	protected volatile boolean threadFailed;
232	>	private final AtomicReference<Throwable> threadFailure
233	>	= new AtomicReference<Throwable>(null);
234
235		/**
236	<	* Initialize test to indicat that no thread assertions have failed
236	>	* Records an exception so that it can be rethrown later in the test
237	>	* harness thread, triggering a test case failure.  Only the first
238	>	* failure is recorded; subsequent calls to this method from within
239	>	* the same test have no effect.
240		*/
241	<	public void setUp() {
241	>	public void threadRecordFailure(Throwable t) {
242	>	threadFailure.compareAndSet(null, t);
243	>	}
244	>
245	>	public void setUp() {
246		setDelays();
91	–	threadFailed = false;
247		}
248
249		/**
250	<	* Trigger test case failure if any thread assertions have failed
250	>	* Triggers test case failure if any thread assertions have failed,
251	>	* by rethrowing, in the test harness thread, any exception recorded
252	>	* earlier by threadRecordFailure.
253		*/
254	<	public void tearDown() {
255	<	assertFalse(threadFailed);
254	>	public void tearDown() throws Exception {
255	>	Throwable t = threadFailure.get();
256	>	if (t != null) {
257	>	if (t instanceof Error)
258	>	throw (Error) t;
259	>	else if (t instanceof RuntimeException)
260	>	throw (RuntimeException) t;
261	>	else if (t instanceof Exception)
262	>	throw (Exception) t;
263	>	else {
264	>	AssertionFailedError afe =
265	>	new AssertionFailedError(t.toString());
266	>	afe.initCause(t);
267	>	throw afe;
268	>	}
269	>	}
270		}
271
272	+	/**
273	+	* Just like fail(reason), but additionally recording (using
274	+	* threadRecordFailure) any AssertionFailedError thrown, so that
275	+	* the current testcase will fail.
276	+	*/
277		public void threadFail(String reason) {
278	<	threadFailed = true;
279	<	fail(reason);
278	>	try {
279	>	fail(reason);
280	>	} catch (AssertionFailedError t) {
281	>	threadRecordFailure(t);
282	>	fail(reason);
283	>	}
284		}
285
286	+	/**
287	+	* Just like assertTrue(b), but additionally recording (using
288	+	* threadRecordFailure) any AssertionFailedError thrown, so that
289	+	* the current testcase will fail.
290	+	*/
291		public void threadAssertTrue(boolean b) {
292	<	if (!b) {
108	<	threadFailed = true;
292	>	try {
293		assertTrue(b);
294	+	} catch (AssertionFailedError t) {
295	+	threadRecordFailure(t);
296	+	throw t;
297		}
298		}
299	+
300	+	/**
301	+	* Just like assertFalse(b), but additionally recording (using
302	+	* threadRecordFailure) any AssertionFailedError thrown, so that
303	+	* the current testcase will fail.
304	+	*/
305		public void threadAssertFalse(boolean b) {
306	<	if (b) {
114	<	threadFailed = true;
306	>	try {
307		assertFalse(b);
308	+	} catch (AssertionFailedError t) {
309	+	threadRecordFailure(t);
310	+	throw t;
311		}
312		}
313	+
314	+	/**
315	+	* Just like assertNull(x), but additionally recording (using
316	+	* threadRecordFailure) any AssertionFailedError thrown, so that
317	+	* the current testcase will fail.
318	+	*/
319		public void threadAssertNull(Object x) {
320	<	if (x != null) {
120	<	threadFailed = true;
320	>	try {
321		assertNull(x);
322	+	} catch (AssertionFailedError t) {
323	+	threadRecordFailure(t);
324	+	throw t;
325		}
326		}
327	+
328	+	/**
329	+	* Just like assertEquals(x, y), but additionally recording (using
330	+	* threadRecordFailure) any AssertionFailedError thrown, so that
331	+	* the current testcase will fail.
332	+	*/
333		public void threadAssertEquals(long x, long y) {
334	<	if (x != y) {
126	<	threadFailed = true;
334	>	try {
335		assertEquals(x, y);
336	+	} catch (AssertionFailedError t) {
337	+	threadRecordFailure(t);
338	+	throw t;
339		}
340		}
341	+
342	+	/**
343	+	* Just like assertEquals(x, y), but additionally recording (using
344	+	* threadRecordFailure) any AssertionFailedError thrown, so that
345	+	* the current testcase will fail.
346	+	*/
347		public void threadAssertEquals(Object x, Object y) {
348	<	if (x != y && (x == null || !x.equals(y))) {
132	<	threadFailed = true;
348	>	try {
349		assertEquals(x, y);
350	+	} catch (AssertionFailedError t) {
351	+	threadRecordFailure(t);
352	+	throw t;
353	+	} catch (Throwable t) {
354	+	threadUnexpectedException(t);
355	+	}
356	+	}
357	+
358	+	/**
359	+	* Just like assertSame(x, y), but additionally recording (using
360	+	* threadRecordFailure) any AssertionFailedError thrown, so that
361	+	* the current testcase will fail.
362	+	*/
363	+	public void threadAssertSame(Object x, Object y) {
364	+	try {
365	+	assertSame(x, y);
366	+	} catch (AssertionFailedError t) {
367	+	threadRecordFailure(t);
368	+	throw t;
369		}
370		}
371
372	+	/**
373	+	* Calls threadFail with message "should throw exception".
374	+	*/
375		public void threadShouldThrow() {
376	<	threadFailed = true;
139	<	fail("should throw exception");
376	>	threadFail("should throw exception");
377		}
378
379	<	public void threadUnexpectedException() {
380	<	threadFailed = true;
381	<	fail("Unexpected exception");
379	>	/**
380	>	* Calls threadFail with message "should throw" + exceptionName.
381	>	*/
382	>	public void threadShouldThrow(String exceptionName) {
383	>	threadFail("should throw " + exceptionName);
384		}
385
386	+	/**
387	+	* Records the given exception using {@link #threadRecordFailure},
388	+	* then rethrows the exception, wrapping it in an
389	+	* AssertionFailedError if necessary.
390	+	*/
391	+	public void threadUnexpectedException(Throwable t) {
392	+	threadRecordFailure(t);
393	+	t.printStackTrace();
394	+	if (t instanceof RuntimeException)
395	+	throw (RuntimeException) t;
396	+	else if (t instanceof Error)
397	+	throw (Error) t;
398	+	else {
399	+	AssertionFailedError afe =
400	+	new AssertionFailedError("unexpected exception: " + t);
401	+	t.initCause(t);
402	+	throw afe;
403	+	}
404	+	}
405
406		/**
407	<	* Wait out termination of a thread pool or fail doing so
407	>	* Waits out termination of a thread pool or fails doing so.
408		*/
409		public void joinPool(ExecutorService exec) {
410		try {
411		exec.shutdown();
412	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
413	<	} catch(InterruptedException ie) {
414	<	fail("Unexpected exception");
412	>	assertTrue("ExecutorService did not terminate in a timely manner",
413	>	exec.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
414	>	} catch (SecurityException ok) {
415	>	// Allowed in case test doesn't have privs
416	>	} catch (InterruptedException ie) {
417	>	fail("Unexpected InterruptedException");
418		}
419		}
420
421	<
421	>
422	>	/**
423	>	* Fails with message "should throw exception".
424	>	*/
425		public void shouldThrow() {
426		fail("Should throw exception");
427		}
428
429	<	public void unexpectedException() {
430	<	fail("Unexpected exception");
429	>	/**
430	>	* Fails with message "should throw " + exceptionName.
431	>	*/
432	>	public void shouldThrow(String exceptionName) {
433	>	fail("Should throw " + exceptionName);
434		}
435
169	–
436		/**
437		* The number of elements to place in collections, arrays, etc.
438		*/
#	Line 174 | Line 440 | public class JSR166TestCase extends Test
440
441		// Some convenient Integer constants
442
443	<	public static final Integer zero = new Integer(0);
444	<	public static final Integer one = new Integer(1);
445	<	public static final Integer two = new Integer(2);
446	<	public static final Integer three  = new Integer(3);
443	>	public static final Integer zero  = new Integer(0);
444	>	public static final Integer one   = new Integer(1);
445	>	public static final Integer two   = new Integer(2);
446	>	public static final Integer three = new Integer(3);
447		public static final Integer four  = new Integer(4);
448		public static final Integer five  = new Integer(5);
449	<	public static final Integer six = new Integer(6);
449	>	public static final Integer six   = new Integer(6);
450		public static final Integer seven = new Integer(7);
451		public static final Integer eight = new Integer(8);
452	<	public static final Integer nine = new Integer(9);
452	>	public static final Integer nine  = new Integer(9);
453		public static final Integer m1  = new Integer(-1);
454		public static final Integer m2  = new Integer(-2);
455		public static final Integer m3  = new Integer(-3);
456	<	public static final Integer m4 = new Integer(-4);
457	<	public static final Integer m5 = new Integer(-5);
456	>	public static final Integer m4  = new Integer(-4);
457	>	public static final Integer m5  = new Integer(-5);
458	>	public static final Integer m6  = new Integer(-6);
459		public static final Integer m10 = new Integer(-10);
460
461
462	<	// Some convenient Runnable classes
462	>	/**
463	>	* Runs Runnable r with a security policy that permits precisely
464	>	* the specified permissions.  If there is no current security
465	>	* manager, the runnable is run twice, both with and without a
466	>	* security manager.  We require that any security manager permit
467	>	* getPolicy/setPolicy.
468	>	*/
469	>	public void runWithPermissions(Runnable r, Permission... permissions) {
470	>	SecurityManager sm = System.getSecurityManager();
471	>	if (sm == null) {
472	>	r.run();
473	>	Policy savedPolicy = Policy.getPolicy();
474	>	try {
475	>	Policy.setPolicy(permissivePolicy());
476	>	System.setSecurityManager(new SecurityManager());
477	>	runWithPermissions(r, permissions);
478	>	} finally {
479	>	System.setSecurityManager(null);
480	>	Policy.setPolicy(savedPolicy);
481	>	}
482	>	} else {
483	>	Policy savedPolicy = Policy.getPolicy();
484	>	AdjustablePolicy policy = new AdjustablePolicy(permissions);
485	>	Policy.setPolicy(policy);
486
487	<	public static class NoOpRunnable implements Runnable {
488	<	public void run() {}
487	>	try {
488	>	r.run();
489	>	} finally {
490	>	policy.addPermission(new SecurityPermission("setPolicy"));
491	>	Policy.setPolicy(savedPolicy);
492	>	}
493	>	}
494		}
495
496	<	public static class NoOpCallable implements Callable {
497	<	public Object call() { return Boolean.TRUE; }
496	>	/**
497	>	* Runs a runnable without any permissions.
498	>	*/
499	>	public void runWithoutPermissions(Runnable r) {
500	>	runWithPermissions(r);
501		}
502
503	<	public class ShortRunnable implements Runnable {
504	<	public void run() {
503	>	/**
504	>	* A security policy where new permissions can be dynamically added
505	>	* or all cleared.
506	>	*/
507	>	public static class AdjustablePolicy extends java.security.Policy {
508	>	Permissions perms = new Permissions();
509	>	AdjustablePolicy(Permission... permissions) {
510	>	for (Permission permission : permissions)
511	>	perms.add(permission);
512	>	}
513	>	void addPermission(Permission perm) { perms.add(perm); }
514	>	void clearPermissions() { perms = new Permissions(); }
515	>	public PermissionCollection getPermissions(CodeSource cs) {
516	>	return perms;
517	>	}
518	>	public PermissionCollection getPermissions(ProtectionDomain pd) {
519	>	return perms;
520	>	}
521	>	public boolean implies(ProtectionDomain pd, Permission p) {
522	>	return perms.implies(p);
523	>	}
524	>	public void refresh() {}
525	>	}
526	>
527	>	/**
528	>	* Returns a policy containing all the permissions we ever need.
529	>	*/
530	>	public static Policy permissivePolicy() {
531	>	return new AdjustablePolicy
532	>	// Permissions j.u.c. needs directly
533	>	(new RuntimePermission("modifyThread"),
534	>	new RuntimePermission("getClassLoader"),
535	>	new RuntimePermission("setContextClassLoader"),
536	>	// Permissions needed to change permissions!
537	>	new SecurityPermission("getPolicy"),
538	>	new SecurityPermission("setPolicy"),
539	>	new RuntimePermission("setSecurityManager"),
540	>	// Permissions needed by the junit test harness
541	>	new RuntimePermission("accessDeclaredMembers"),
542	>	new PropertyPermission("*", "read"),
543	>	new java.io.FilePermission("<<ALL FILES>>", "read"));
544	>	}
545	>
546	>	/**
547	>	* Sleeps until the given time has elapsed.
548	>	* Throws AssertionFailedError if interrupted.
549	>	*/
550	>	void sleep(long millis) {
551	>	try {
552	>	Thread.sleep(millis);
553	>	} catch (InterruptedException ie) {
554	>	AssertionFailedError afe =
555	>	new AssertionFailedError("Unexpected InterruptedException");
556	>	afe.initCause(ie);
557	>	throw afe;
558	>	}
559	>	}
560	>
561	>	/**
562	>	* Sleeps until the timeout has elapsed, or interrupted.
563	>	* Does <em>NOT</em> throw InterruptedException.
564	>	*/
565	>	void sleepTillInterrupted(long timeoutMillis) {
566	>	try {
567	>	Thread.sleep(timeoutMillis);
568	>	} catch (InterruptedException wakeup) {}
569	>	}
570	>
571	>	/**
572	>	* Returns a new started daemon Thread running the given runnable.
573	>	*/
574	>	Thread newStartedThread(Runnable runnable) {
575	>	Thread t = new Thread(runnable);
576	>	t.setDaemon(true);
577	>	t.start();
578	>	return t;
579	>	}
580	>
581	>	/**
582	>	* Waits for the specified time (in milliseconds) for the thread
583	>	* to terminate (using {@link Thread#join(long)}), else interrupts
584	>	* the thread (in the hope that it may terminate later) and fails.
585	>	*/
586	>	void awaitTermination(Thread t, long timeoutMillis) {
587	>	try {
588	>	t.join(timeoutMillis);
589	>	} catch (InterruptedException ie) {
590	>	threadUnexpectedException(ie);
591	>	} finally {
592	>	if (t.isAlive()) {
593	>	t.interrupt();
594	>	fail("Test timed out");
595	>	}
596	>	}
597	>	}
598	>
599	>	// Some convenient Runnable classes
600	>
601	>	public abstract class CheckedRunnable implements Runnable {
602	>	protected abstract void realRun() throws Throwable;
603	>
604	>	public final void run() {
605		try {
606	<	Thread.sleep(SHORT_DELAY_MS);
606	>	realRun();
607	>	} catch (Throwable t) {
608	>	threadUnexpectedException(t);
609		}
610	<	catch(Exception e) {
611	<	threadUnexpectedException();
610	>	}
611	>	}
612	>
613	>	public abstract class RunnableShouldThrow implements Runnable {
614	>	protected abstract void realRun() throws Throwable;
615	>
616	>	final Class<?> exceptionClass;
617	>
618	>	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
619	>	this.exceptionClass = exceptionClass;
620	>	}
621	>
622	>	public final void run() {
623	>	try {
624	>	realRun();
625	>	threadShouldThrow(exceptionClass.getSimpleName());
626	>	} catch (Throwable t) {
627	>	if (! exceptionClass.isInstance(t))
628	>	threadUnexpectedException(t);
629		}
630		}
631		}
632
633	<	public class ShortInterruptedRunnable implements Runnable {
634	<	public void run() {
633	>	public abstract class ThreadShouldThrow extends Thread {
634	>	protected abstract void realRun() throws Throwable;
635	>
636	>	final Class<?> exceptionClass;
637	>
638	>	<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) {
639	>	this.exceptionClass = exceptionClass;
640	>	}
641	>
642	>	public final void run() {
643		try {
644	<	Thread.sleep(SHORT_DELAY_MS);
645	<	threadShouldThrow();
644	>	realRun();
645	>	threadShouldThrow(exceptionClass.getSimpleName());
646	>	} catch (Throwable t) {
647	>	if (! exceptionClass.isInstance(t))
648	>	threadUnexpectedException(t);
649		}
650	<	catch(InterruptedException success) {
650	>	}
651	>	}
652	>
653	>	public abstract class CheckedInterruptedRunnable implements Runnable {
654	>	protected abstract void realRun() throws Throwable;
655	>
656	>	public final void run() {
657	>	try {
658	>	realRun();
659	>	threadShouldThrow("InterruptedException");
660	>	} catch (InterruptedException success) {
661	>	} catch (Throwable t) {
662	>	threadUnexpectedException(t);
663		}
664		}
665		}
666
667	<	public class SmallRunnable implements Runnable {
668	<	public void run() {
667	>	public abstract class CheckedCallable<T> implements Callable<T> {
668	>	protected abstract T realCall() throws Throwable;
669	>
670	>	public final T call() {
671		try {
672	<	Thread.sleep(SMALL_DELAY_MS);
672	>	return realCall();
673	>	} catch (Throwable t) {
674	>	threadUnexpectedException(t);
675	>	return null;
676		}
677	<	catch(Exception e) {
678	<	threadUnexpectedException();
677	>	}
678	>	}
679	>
680	>	public abstract class CheckedInterruptedCallable<T>
681	>	implements Callable<T> {
682	>	protected abstract T realCall() throws Throwable;
683	>
684	>	public final T call() {
685	>	try {
686	>	T result = realCall();
687	>	threadShouldThrow("InterruptedException");
688	>	return result;
689	>	} catch (InterruptedException success) {
690	>	} catch (Throwable t) {
691	>	threadUnexpectedException(t);
692		}
693	+	return null;
694		}
695		}
696
697	<	public class SmallCallable implements Callable {
698	<	public Object call() {
697	>	public static class NoOpRunnable implements Runnable {
698	>	public void run() {}
699	>	}
700	>
701	>	public static class NoOpCallable implements Callable {
702	>	public Object call() { return Boolean.TRUE; }
703	>	}
704	>
705	>	public static final String TEST_STRING = "a test string";
706	>
707	>	public static class StringTask implements Callable<String> {
708	>	public String call() { return TEST_STRING; }
709	>	}
710	>
711	>	public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
712	>	return new CheckedCallable<String>() {
713	>	public String realCall() {
714	>	try {
715	>	latch.await();
716	>	} catch (InterruptedException quittingTime) {}
717	>	return TEST_STRING;
718	>	}};
719	>	}
720	>
721	>	public static class NPETask implements Callable<String> {
722	>	public String call() { throw new NullPointerException(); }
723	>	}
724	>
725	>	public static class CallableOne implements Callable<Integer> {
726	>	public Integer call() { return one; }
727	>	}
728	>
729	>	public class ShortRunnable extends CheckedRunnable {
730	>	protected void realRun() throws Throwable {
731	>	Thread.sleep(SHORT_DELAY_MS);
732	>	}
733	>	}
734	>
735	>	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
736	>	protected void realRun() throws InterruptedException {
737	>	Thread.sleep(SHORT_DELAY_MS);
738	>	}
739	>	}
740	>
741	>	public class SmallRunnable extends CheckedRunnable {
742	>	protected void realRun() throws Throwable {
743	>	Thread.sleep(SMALL_DELAY_MS);
744	>	}
745	>	}
746	>
747	>	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
748	>	protected void realRun() {
749		try {
750		Thread.sleep(SMALL_DELAY_MS);
751	<	}
752	<	catch(Exception e) {
753	<	threadUnexpectedException();
754	<	}
751	>	} catch (InterruptedException ok) {}
752	>	}
753	>	}
754	>
755	>	public class SmallCallable extends CheckedCallable {
756	>	protected Object realCall() throws InterruptedException {
757	>	Thread.sleep(SMALL_DELAY_MS);
758		return Boolean.TRUE;
759		}
760		}
761
762	<	public class SmallInterruptedRunnable implements Runnable {
762	>	public class MediumRunnable extends CheckedRunnable {
763	>	protected void realRun() throws Throwable {
764	>	Thread.sleep(MEDIUM_DELAY_MS);
765	>	}
766	>	}
767	>
768	>	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
769	>	protected void realRun() throws InterruptedException {
770	>	Thread.sleep(MEDIUM_DELAY_MS);
771	>	}
772	>	}
773	>
774	>	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
775	>	protected void realRun() {
776	>	try {
777	>	Thread.sleep(MEDIUM_DELAY_MS);
778	>	} catch (InterruptedException ok) {}
779	>	}
780	>	}
781	>
782	>	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
783	>	protected void realRun() {
784	>	try {
785	>	Thread.sleep(LONG_DELAY_MS);
786	>	} catch (InterruptedException ok) {}
787	>	}
788	>	}
789	>
790	>	/**
791	>	* For use as ThreadFactory in constructors
792	>	*/
793	>	public static class SimpleThreadFactory implements ThreadFactory {
794	>	public Thread newThread(Runnable r) {
795	>	return new Thread(r);
796	>	}
797	>	}
798	>
799	>	public static class TrackedShortRunnable implements Runnable {
800	>	public volatile boolean done = false;
801		public void run() {
802		try {
803		Thread.sleep(SMALL_DELAY_MS);
804	<	threadShouldThrow();
805	<	}
256	<	catch(InterruptedException success) {
257	<	}
804	>	done = true;
805	>	} catch (InterruptedException ok) {}
806		}
807		}
808
809	<
810	<	public class MediumRunnable implements Runnable {
809	>	public static class TrackedMediumRunnable implements Runnable {
810	>	public volatile boolean done = false;
811		public void run() {
812		try {
813		Thread.sleep(MEDIUM_DELAY_MS);
814	<	}
815	<	catch(Exception e) {
268	<	threadUnexpectedException();
269	<	}
814	>	done = true;
815	>	} catch (InterruptedException ok) {}
816		}
817		}
818
819	<	public class MediumInterruptedRunnable implements Runnable {
819	>	public static class TrackedLongRunnable implements Runnable {
820	>	public volatile boolean done = false;
821		public void run() {
822		try {
823	<	Thread.sleep(MEDIUM_DELAY_MS);
824	<	threadShouldThrow();
825	<	}
279	<	catch(InterruptedException success) {
280	<	}
823	>	Thread.sleep(LONG_DELAY_MS);
824	>	done = true;
825	>	} catch (InterruptedException ok) {}
826		}
827		}
828
829	<	public class MediumPossiblyInterruptedRunnable implements Runnable {
829	>	public static class TrackedNoOpRunnable implements Runnable {
830	>	public volatile boolean done = false;
831		public void run() {
832	+	done = true;
833	+	}
834	+	}
835	+
836	+	public static class TrackedCallable implements Callable {
837	+	public volatile boolean done = false;
838	+	public Object call() {
839		try {
840	<	Thread.sleep(MEDIUM_DELAY_MS);
840	>	Thread.sleep(SMALL_DELAY_MS);
841	>	done = true;
842	>	} catch (InterruptedException ok) {}
843	>	return Boolean.TRUE;
844	>	}
845	>	}
846	>
847	>	/**
848	>	* Analog of CheckedRunnable for RecursiveAction
849	>	*/
850	>	public abstract class CheckedRecursiveAction extends RecursiveAction {
851	>	protected abstract void realCompute() throws Throwable;
852	>
853	>	public final void compute() {
854	>	try {
855	>	realCompute();
856	>	} catch (Throwable t) {
857	>	threadUnexpectedException(t);
858		}
859	<	catch(InterruptedException success) {
859	>	}
860	>	}
861	>
862	>	/**
863	>	* Analog of CheckedCallable for RecursiveTask
864	>	*/
865	>	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
866	>	protected abstract T realCompute() throws Throwable;
867	>
868	>	public final T compute() {
869	>	try {
870	>	return realCompute();
871	>	} catch (Throwable t) {
872	>	threadUnexpectedException(t);
873	>	return null;
874	>	}
875	>	}
876	>	}
877	>
878	>	/**
879	>	* For use as RejectedExecutionHandler in constructors
880	>	*/
881	>	public static class NoOpREHandler implements RejectedExecutionHandler {
882	>	public void rejectedExecution(Runnable r,
883	>	ThreadPoolExecutor executor) {}
884	>	}
885	>
886	>	/**
887	>	* A CyclicBarrier that fails with AssertionFailedErrors instead
888	>	* of throwing checked exceptions.
889	>	*/
890	>	public class CheckedBarrier extends CyclicBarrier {
891	>	public CheckedBarrier(int parties) { super(parties); }
892	>
893	>	public int await() {
894	>	try {
895	>	return super.await();
896	>	} catch (Exception e) {
897	>	AssertionFailedError afe =
898	>	new AssertionFailedError("Unexpected exception: " + e);
899	>	afe.initCause(e);
900	>	throw afe;
901		}
902		}
903		}
904	<
904	>
905		}

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