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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 1.61 by jsr166, Mon Oct 11 03:54:10 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	+	* If true, report on stdout all "slow" tests, that is, ones that
101	+	* take more than profileThreshold milliseconds to execute.
102	+	*/
103	+	private static final boolean profileTests =
104	+	Boolean.getBoolean("jsr166.profileTests");
105	+
106	+	/**
107	+	* The number of milliseconds that tests are permitted for
108	+	* execution without being reported, when profileTests is set.
109	+	*/
110	+	private static final long profileThreshold =
111	+	Long.getLong("jsr166.profileThreshold", 100);
112	+
113	+	protected void runTest() throws Throwable {
114	+	if (profileTests)
115	+	runTestProfiled();
116	+	else
117	+	super.runTest();
118	+	}
119	+
120	+	protected void runTestProfiled() throws Throwable {
121	+	long t0 = System.nanoTime();
122	+	try {
123	+	super.runTest();
124	+	} finally {
125	+	long elapsedMillis =
126	+	(System.nanoTime() - t0) / (1000L * 1000L);
127	+	if (elapsedMillis >= profileThreshold)
128	+	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
129	+	}
130	+	}
131	+
132	+	/**
133	+	* Runs all JSR166 unit tests using junit.textui.TestRunner
134	+	*/
135	+	public static void main(String[] args) {
136	+	if (useSecurityManager) {
137	+	System.err.println("Setting a permissive security manager");
138	+	Policy.setPolicy(permissivePolicy());
139	+	System.setSecurityManager(new SecurityManager());
140	+	}
141	+	int iters = (args.length == 0) ? 1 : Integer.parseInt(args[0]);
142	+
143	+	Test s = suite();
144	+	for (int i = 0; i < iters; ++i) {
145	+	junit.textui.TestRunner.run(s);
146	+	System.gc();
147	+	System.runFinalization();
148	+	}
149	+	System.exit(0);
150	+	}
151	+
152	+	public static TestSuite newTestSuite(Object... suiteOrClasses) {
153	+	TestSuite suite = new TestSuite();
154	+	for (Object suiteOrClass : suiteOrClasses) {
155	+	if (suiteOrClass instanceof TestSuite)
156	+	suite.addTest((TestSuite) suiteOrClass);
157	+	else if (suiteOrClass instanceof Class)
158	+	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
159	+	else
160	+	throw new ClassCastException("not a test suite or class");
161	+	}
162	+	return suite;
163	+	}
164	+
165	+	/**
166	+	* Collects all JSR166 unit tests as one suite.
167	+	*/
168	+	public static Test suite() {
169	+	return newTestSuite(
170	+	ForkJoinPoolTest.suite(),
171	+	ForkJoinTaskTest.suite(),
172	+	RecursiveActionTest.suite(),
173	+	RecursiveTaskTest.suite(),
174	+	LinkedTransferQueueTest.suite(),
175	+	PhaserTest.suite(),
176	+	ThreadLocalRandomTest.suite(),
177	+	AbstractExecutorServiceTest.suite(),
178	+	AbstractQueueTest.suite(),
179	+	AbstractQueuedSynchronizerTest.suite(),
180	+	AbstractQueuedLongSynchronizerTest.suite(),
181	+	ArrayBlockingQueueTest.suite(),
182	+	ArrayDequeTest.suite(),
183	+	AtomicBooleanTest.suite(),
184	+	AtomicIntegerArrayTest.suite(),
185	+	AtomicIntegerFieldUpdaterTest.suite(),
186	+	AtomicIntegerTest.suite(),
187	+	AtomicLongArrayTest.suite(),
188	+	AtomicLongFieldUpdaterTest.suite(),
189	+	AtomicLongTest.suite(),
190	+	AtomicMarkableReferenceTest.suite(),
191	+	AtomicReferenceArrayTest.suite(),
192	+	AtomicReferenceFieldUpdaterTest.suite(),
193	+	AtomicReferenceTest.suite(),
194	+	AtomicStampedReferenceTest.suite(),
195	+	ConcurrentHashMapTest.suite(),
196	+	ConcurrentLinkedDequeTest.suite(),
197	+	ConcurrentLinkedQueueTest.suite(),
198	+	ConcurrentSkipListMapTest.suite(),
199	+	ConcurrentSkipListSubMapTest.suite(),
200	+	ConcurrentSkipListSetTest.suite(),
201	+	ConcurrentSkipListSubSetTest.suite(),
202	+	CopyOnWriteArrayListTest.suite(),
203	+	CopyOnWriteArraySetTest.suite(),
204	+	CountDownLatchTest.suite(),
205	+	CyclicBarrierTest.suite(),
206	+	DelayQueueTest.suite(),
207	+	EntryTest.suite(),
208	+	ExchangerTest.suite(),
209	+	ExecutorsTest.suite(),
210	+	ExecutorCompletionServiceTest.suite(),
211	+	FutureTaskTest.suite(),
212	+	LinkedBlockingDequeTest.suite(),
213	+	LinkedBlockingQueueTest.suite(),
214	+	LinkedListTest.suite(),
215	+	LockSupportTest.suite(),
216	+	PriorityBlockingQueueTest.suite(),
217	+	PriorityQueueTest.suite(),
218	+	ReentrantLockTest.suite(),
219	+	ReentrantReadWriteLockTest.suite(),
220	+	ScheduledExecutorTest.suite(),
221	+	ScheduledExecutorSubclassTest.suite(),
222	+	SemaphoreTest.suite(),
223	+	SynchronousQueueTest.suite(),
224	+	SystemTest.suite(),
225	+	ThreadLocalTest.suite(),
226	+	ThreadPoolExecutorTest.suite(),
227	+	ThreadPoolExecutorSubclassTest.suite(),
228	+	ThreadTest.suite(),
229	+	TimeUnitTest.suite(),
230	+	TreeMapTest.suite(),
231	+	TreeSetTest.suite(),
232	+	TreeSubMapTest.suite(),
233	+	TreeSubSetTest.suite());
234	+	}
235	+
236
237		public static long SHORT_DELAY_MS;
238		public static long SMALL_DELAY_MS;
#	Line 60 | Line 241 | public class JSR166TestCase extends Test
241
242
243		/**
244	<	* Return the shortest timed delay. This could
245	<	* be reimplmented to use for example a Property.
246	<	*/
244	>	* Returns the shortest timed delay. This could
245	>	* be reimplemented to use for example a Property.
246	>	*/
247		protected long getShortDelay() {
248		return 50;
249		}
250
251
252		/**
253	<	* Set delays as multiples fo SHORT_DELAY.
253	>	* Sets delays as multiples of SHORT_DELAY.
254		*/
255	<	protected  void setDelays() {
255	>	protected void setDelays() {
256		SHORT_DELAY_MS = getShortDelay();
257	<	SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
257	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
258		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
259	<	LONG_DELAY_MS = SHORT_DELAY_MS * 50;
259	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 50;
260		}
261
262		/**
263	<	* Flag set true if any threadAssert methods fail
263	>	* The first exception encountered if any threadAssertXXX method fails.
264		*/
265	<	protected volatile boolean threadFailed;
265	>	private final AtomicReference<Throwable> threadFailure
266	>	= new AtomicReference<Throwable>(null);
267
268		/**
269	<	* Initialize test to indicat that no thread assertions have failed
269	>	* Records an exception so that it can be rethrown later in the test
270	>	* harness thread, triggering a test case failure.  Only the first
271	>	* failure is recorded; subsequent calls to this method from within
272	>	* the same test have no effect.
273		*/
274	<	public void setUp() {
274	>	public void threadRecordFailure(Throwable t) {
275	>	threadFailure.compareAndSet(null, t);
276	>	}
277	>
278	>	public void setUp() {
279		setDelays();
91	–	threadFailed = false;
280		}
281
282		/**
283	<	* Trigger test case failure if any thread assertions have failed
283	>	* Triggers test case failure if any thread assertions have failed,
284	>	* by rethrowing, in the test harness thread, any exception recorded
285	>	* earlier by threadRecordFailure.
286		*/
287	<	public void tearDown() {
288	<	assertFalse(threadFailed);
287	>	public void tearDown() throws Exception {
288	>	Throwable t = threadFailure.get();
289	>	if (t != null) {
290	>	if (t instanceof Error)
291	>	throw (Error) t;
292	>	else if (t instanceof RuntimeException)
293	>	throw (RuntimeException) t;
294	>	else if (t instanceof Exception)
295	>	throw (Exception) t;
296	>	else {
297	>	AssertionFailedError afe =
298	>	new AssertionFailedError(t.toString());
299	>	afe.initCause(t);
300	>	throw afe;
301	>	}
302	>	}
303		}
304
305	+	/**
306	+	* Just like fail(reason), but additionally recording (using
307	+	* threadRecordFailure) any AssertionFailedError thrown, so that
308	+	* the current testcase will fail.
309	+	*/
310		public void threadFail(String reason) {
311	<	threadFailed = true;
312	<	fail(reason);
311	>	try {
312	>	fail(reason);
313	>	} catch (AssertionFailedError t) {
314	>	threadRecordFailure(t);
315	>	fail(reason);
316	>	}
317		}
318
319	+	/**
320	+	* Just like assertTrue(b), but additionally recording (using
321	+	* threadRecordFailure) any AssertionFailedError thrown, so that
322	+	* the current testcase will fail.
323	+	*/
324		public void threadAssertTrue(boolean b) {
325	<	if (!b) {
108	<	threadFailed = true;
325	>	try {
326		assertTrue(b);
327	+	} catch (AssertionFailedError t) {
328	+	threadRecordFailure(t);
329	+	throw t;
330		}
331		}
332	+
333	+	/**
334	+	* Just like assertFalse(b), but additionally recording (using
335	+	* threadRecordFailure) any AssertionFailedError thrown, so that
336	+	* the current testcase will fail.
337	+	*/
338		public void threadAssertFalse(boolean b) {
339	<	if (b) {
114	<	threadFailed = true;
339	>	try {
340		assertFalse(b);
341	+	} catch (AssertionFailedError t) {
342	+	threadRecordFailure(t);
343	+	throw t;
344		}
345		}
346	+
347	+	/**
348	+	* Just like assertNull(x), but additionally recording (using
349	+	* threadRecordFailure) any AssertionFailedError thrown, so that
350	+	* the current testcase will fail.
351	+	*/
352		public void threadAssertNull(Object x) {
353	<	if (x != null) {
120	<	threadFailed = true;
353	>	try {
354		assertNull(x);
355	+	} catch (AssertionFailedError t) {
356	+	threadRecordFailure(t);
357	+	throw t;
358		}
359		}
360	+
361	+	/**
362	+	* Just like assertEquals(x, y), but additionally recording (using
363	+	* threadRecordFailure) any AssertionFailedError thrown, so that
364	+	* the current testcase will fail.
365	+	*/
366		public void threadAssertEquals(long x, long y) {
367	<	if (x != y) {
126	<	threadFailed = true;
367	>	try {
368		assertEquals(x, y);
369	+	} catch (AssertionFailedError t) {
370	+	threadRecordFailure(t);
371	+	throw t;
372		}
373		}
374	+
375	+	/**
376	+	* Just like assertEquals(x, y), but additionally recording (using
377	+	* threadRecordFailure) any AssertionFailedError thrown, so that
378	+	* the current testcase will fail.
379	+	*/
380		public void threadAssertEquals(Object x, Object y) {
381	<	if (x != y && (x == null || !x.equals(y))) {
132	<	threadFailed = true;
381	>	try {
382		assertEquals(x, y);
383	+	} catch (AssertionFailedError t) {
384	+	threadRecordFailure(t);
385	+	throw t;
386	+	} catch (Throwable t) {
387	+	threadUnexpectedException(t);
388		}
389		}
390
391	+	/**
392	+	* Just like assertSame(x, y), but additionally recording (using
393	+	* threadRecordFailure) any AssertionFailedError thrown, so that
394	+	* the current testcase will fail.
395	+	*/
396	+	public void threadAssertSame(Object x, Object y) {
397	+	try {
398	+	assertSame(x, y);
399	+	} catch (AssertionFailedError t) {
400	+	threadRecordFailure(t);
401	+	throw t;
402	+	}
403	+	}
404	+
405	+	/**
406	+	* Calls threadFail with message "should throw exception".
407	+	*/
408		public void threadShouldThrow() {
409	<	threadFailed = true;
139	<	fail("should throw exception");
409	>	threadFail("should throw exception");
410		}
411
412	<	public void threadUnexpectedException() {
413	<	threadFailed = true;
414	<	fail("Unexpected exception");
412	>	/**
413	>	* Calls threadFail with message "should throw" + exceptionName.
414	>	*/
415	>	public void threadShouldThrow(String exceptionName) {
416	>	threadFail("should throw " + exceptionName);
417		}
418
419	+	/**
420	+	* Records the given exception using {@link #threadRecordFailure},
421	+	* then rethrows the exception, wrapping it in an
422	+	* AssertionFailedError if necessary.
423	+	*/
424	+	public void threadUnexpectedException(Throwable t) {
425	+	threadRecordFailure(t);
426	+	t.printStackTrace();
427	+	if (t instanceof RuntimeException)
428	+	throw (RuntimeException) t;
429	+	else if (t instanceof Error)
430	+	throw (Error) t;
431	+	else {
432	+	AssertionFailedError afe =
433	+	new AssertionFailedError("unexpected exception: " + t);
434	+	t.initCause(t);
435	+	throw afe;
436	+	}
437	+	}
438
439		/**
440	<	* Wait out termination of a thread pool or fail doing so
440	>	* Waits out termination of a thread pool or fails doing so.
441		*/
442		public void joinPool(ExecutorService exec) {
443		try {
444		exec.shutdown();
445	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
446	<	} catch(InterruptedException ie) {
447	<	fail("Unexpected exception");
445	>	assertTrue("ExecutorService did not terminate in a timely manner",
446	>	exec.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
447	>	} catch (SecurityException ok) {
448	>	// Allowed in case test doesn't have privs
449	>	} catch (InterruptedException ie) {
450	>	fail("Unexpected InterruptedException");
451		}
452		}
453
454	<
454	>
455	>	/**
456	>	* Fails with message "should throw exception".
457	>	*/
458		public void shouldThrow() {
459		fail("Should throw exception");
460		}
461
462	<	public void unexpectedException() {
463	<	fail("Unexpected exception");
462	>	/**
463	>	* Fails with message "should throw " + exceptionName.
464	>	*/
465	>	public void shouldThrow(String exceptionName) {
466	>	fail("Should throw " + exceptionName);
467		}
468
169	–
469		/**
470		* The number of elements to place in collections, arrays, etc.
471		*/
#	Line 174 | Line 473 | public class JSR166TestCase extends Test
473
474		// Some convenient Integer constants
475
476	<	public static final Integer zero = new Integer(0);
477	<	public static final Integer one = new Integer(1);
478	<	public static final Integer two = new Integer(2);
479	<	public static final Integer three  = new Integer(3);
476	>	public static final Integer zero  = new Integer(0);
477	>	public static final Integer one   = new Integer(1);
478	>	public static final Integer two   = new Integer(2);
479	>	public static final Integer three = new Integer(3);
480		public static final Integer four  = new Integer(4);
481		public static final Integer five  = new Integer(5);
482	<	public static final Integer six = new Integer(6);
482	>	public static final Integer six   = new Integer(6);
483		public static final Integer seven = new Integer(7);
484		public static final Integer eight = new Integer(8);
485	<	public static final Integer nine = new Integer(9);
485	>	public static final Integer nine  = new Integer(9);
486		public static final Integer m1  = new Integer(-1);
487		public static final Integer m2  = new Integer(-2);
488		public static final Integer m3  = new Integer(-3);
489	<	public static final Integer m4 = new Integer(-4);
490	<	public static final Integer m5 = new Integer(-5);
489	>	public static final Integer m4  = new Integer(-4);
490	>	public static final Integer m5  = new Integer(-5);
491	>	public static final Integer m6  = new Integer(-6);
492		public static final Integer m10 = new Integer(-10);
493
494
495	<	// Some convenient Runnable classes
495	>	/**
496	>	* Runs Runnable r with a security policy that permits precisely
497	>	* the specified permissions.  If there is no current security
498	>	* manager, the runnable is run twice, both with and without a
499	>	* security manager.  We require that any security manager permit
500	>	* getPolicy/setPolicy.
501	>	*/
502	>	public void runWithPermissions(Runnable r, Permission... permissions) {
503	>	SecurityManager sm = System.getSecurityManager();
504	>	if (sm == null) {
505	>	r.run();
506	>	Policy savedPolicy = Policy.getPolicy();
507	>	try {
508	>	Policy.setPolicy(permissivePolicy());
509	>	System.setSecurityManager(new SecurityManager());
510	>	runWithPermissions(r, permissions);
511	>	} finally {
512	>	System.setSecurityManager(null);
513	>	Policy.setPolicy(savedPolicy);
514	>	}
515	>	} else {
516	>	Policy savedPolicy = Policy.getPolicy();
517	>	AdjustablePolicy policy = new AdjustablePolicy(permissions);
518	>	Policy.setPolicy(policy);
519
520	<	public static class NoOpRunnable implements Runnable {
521	<	public void run() {}
520	>	try {
521	>	r.run();
522	>	} finally {
523	>	policy.addPermission(new SecurityPermission("setPolicy"));
524	>	Policy.setPolicy(savedPolicy);
525	>	}
526	>	}
527		}
528
529	<	public static class NoOpCallable implements Callable {
530	<	public Object call() { return Boolean.TRUE; }
529	>	/**
530	>	* Runs a runnable without any permissions.
531	>	*/
532	>	public void runWithoutPermissions(Runnable r) {
533	>	runWithPermissions(r);
534		}
535
536	<	public class ShortRunnable implements Runnable {
537	<	public void run() {
536	>	/**
537	>	* A security policy where new permissions can be dynamically added
538	>	* or all cleared.
539	>	*/
540	>	public static class AdjustablePolicy extends java.security.Policy {
541	>	Permissions perms = new Permissions();
542	>	AdjustablePolicy(Permission... permissions) {
543	>	for (Permission permission : permissions)
544	>	perms.add(permission);
545	>	}
546	>	void addPermission(Permission perm) { perms.add(perm); }
547	>	void clearPermissions() { perms = new Permissions(); }
548	>	public PermissionCollection getPermissions(CodeSource cs) {
549	>	return perms;
550	>	}
551	>	public PermissionCollection getPermissions(ProtectionDomain pd) {
552	>	return perms;
553	>	}
554	>	public boolean implies(ProtectionDomain pd, Permission p) {
555	>	return perms.implies(p);
556	>	}
557	>	public void refresh() {}
558	>	}
559	>
560	>	/**
561	>	* Returns a policy containing all the permissions we ever need.
562	>	*/
563	>	public static Policy permissivePolicy() {
564	>	return new AdjustablePolicy
565	>	// Permissions j.u.c. needs directly
566	>	(new RuntimePermission("modifyThread"),
567	>	new RuntimePermission("getClassLoader"),
568	>	new RuntimePermission("setContextClassLoader"),
569	>	// Permissions needed to change permissions!
570	>	new SecurityPermission("getPolicy"),
571	>	new SecurityPermission("setPolicy"),
572	>	new RuntimePermission("setSecurityManager"),
573	>	// Permissions needed by the junit test harness
574	>	new RuntimePermission("accessDeclaredMembers"),
575	>	new PropertyPermission("*", "read"),
576	>	new java.io.FilePermission("<<ALL FILES>>", "read"));
577	>	}
578	>
579	>	/**
580	>	* Sleeps until the given time has elapsed.
581	>	* Throws AssertionFailedError if interrupted.
582	>	*/
583	>	void sleep(long millis) {
584	>	try {
585	>	Thread.sleep(millis);
586	>	} catch (InterruptedException ie) {
587	>	AssertionFailedError afe =
588	>	new AssertionFailedError("Unexpected InterruptedException");
589	>	afe.initCause(ie);
590	>	throw afe;
591	>	}
592	>	}
593	>
594	>	/**
595	>	* Sleeps until the timeout has elapsed, or interrupted.
596	>	* Does <em>NOT</em> throw InterruptedException.
597	>	*/
598	>	void sleepTillInterrupted(long timeoutMillis) {
599	>	try {
600	>	Thread.sleep(timeoutMillis);
601	>	} catch (InterruptedException wakeup) {}
602	>	}
603	>
604	>	/**
605	>	* Returns a new started daemon Thread running the given runnable.
606	>	*/
607	>	Thread newStartedThread(Runnable runnable) {
608	>	Thread t = new Thread(runnable);
609	>	t.setDaemon(true);
610	>	t.start();
611	>	return t;
612	>	}
613	>
614	>	/**
615	>	* Waits for the specified time (in milliseconds) for the thread
616	>	* to terminate (using {@link Thread#join(long)}), else interrupts
617	>	* the thread (in the hope that it may terminate later) and fails.
618	>	*/
619	>	void awaitTermination(Thread t, long timeoutMillis) {
620	>	try {
621	>	t.join(timeoutMillis);
622	>	} catch (InterruptedException ie) {
623	>	threadUnexpectedException(ie);
624	>	} finally {
625	>	if (t.isAlive()) {
626	>	t.interrupt();
627	>	fail("Test timed out");
628	>	}
629	>	}
630	>	}
631	>
632	>	// Some convenient Runnable classes
633	>
634	>	public abstract class CheckedRunnable implements Runnable {
635	>	protected abstract void realRun() throws Throwable;
636	>
637	>	public final void run() {
638		try {
639	<	Thread.sleep(SHORT_DELAY_MS);
639	>	realRun();
640	>	} catch (Throwable t) {
641	>	threadUnexpectedException(t);
642		}
643	<	catch(Exception e) {
644	<	threadUnexpectedException();
643	>	}
644	>	}
645	>
646	>	public abstract class RunnableShouldThrow implements Runnable {
647	>	protected abstract void realRun() throws Throwable;
648	>
649	>	final Class<?> exceptionClass;
650	>
651	>	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
652	>	this.exceptionClass = exceptionClass;
653	>	}
654	>
655	>	public final void run() {
656	>	try {
657	>	realRun();
658	>	threadShouldThrow(exceptionClass.getSimpleName());
659	>	} catch (Throwable t) {
660	>	if (! exceptionClass.isInstance(t))
661	>	threadUnexpectedException(t);
662		}
663		}
664		}
665
666	<	public class ShortInterruptedRunnable implements Runnable {
667	<	public void run() {
666	>	public abstract class ThreadShouldThrow extends Thread {
667	>	protected abstract void realRun() throws Throwable;
668	>
669	>	final Class<?> exceptionClass;
670	>
671	>	<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) {
672	>	this.exceptionClass = exceptionClass;
673	>	}
674	>
675	>	public final void run() {
676		try {
677	<	Thread.sleep(SHORT_DELAY_MS);
678	<	threadShouldThrow();
677	>	realRun();
678	>	threadShouldThrow(exceptionClass.getSimpleName());
679	>	} catch (Throwable t) {
680	>	if (! exceptionClass.isInstance(t))
681	>	threadUnexpectedException(t);
682		}
683	<	catch(InterruptedException success) {
683	>	}
684	>	}
685	>
686	>	public abstract class CheckedInterruptedRunnable implements Runnable {
687	>	protected abstract void realRun() throws Throwable;
688	>
689	>	public final void run() {
690	>	try {
691	>	realRun();
692	>	threadShouldThrow("InterruptedException");
693	>	} catch (InterruptedException success) {
694	>	} catch (Throwable t) {
695	>	threadUnexpectedException(t);
696		}
697		}
698		}
699
700	<	public class SmallRunnable implements Runnable {
701	<	public void run() {
700	>	public abstract class CheckedCallable<T> implements Callable<T> {
701	>	protected abstract T realCall() throws Throwable;
702	>
703	>	public final T call() {
704		try {
705	<	Thread.sleep(SMALL_DELAY_MS);
705	>	return realCall();
706	>	} catch (Throwable t) {
707	>	threadUnexpectedException(t);
708	>	return null;
709		}
710	<	catch(Exception e) {
711	<	threadUnexpectedException();
710	>	}
711	>	}
712	>
713	>	public abstract class CheckedInterruptedCallable<T>
714	>	implements Callable<T> {
715	>	protected abstract T realCall() throws Throwable;
716	>
717	>	public final T call() {
718	>	try {
719	>	T result = realCall();
720	>	threadShouldThrow("InterruptedException");
721	>	return result;
722	>	} catch (InterruptedException success) {
723	>	} catch (Throwable t) {
724	>	threadUnexpectedException(t);
725		}
726	+	return null;
727		}
728		}
729
730	<	public class SmallCallable implements Callable {
731	<	public Object call() {
730	>	public static class NoOpRunnable implements Runnable {
731	>	public void run() {}
732	>	}
733	>
734	>	public static class NoOpCallable implements Callable {
735	>	public Object call() { return Boolean.TRUE; }
736	>	}
737	>
738	>	public static final String TEST_STRING = "a test string";
739	>
740	>	public static class StringTask implements Callable<String> {
741	>	public String call() { return TEST_STRING; }
742	>	}
743	>
744	>	public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
745	>	return new CheckedCallable<String>() {
746	>	public String realCall() {
747	>	try {
748	>	latch.await();
749	>	} catch (InterruptedException quittingTime) {}
750	>	return TEST_STRING;
751	>	}};
752	>	}
753	>
754	>	public static class NPETask implements Callable<String> {
755	>	public String call() { throw new NullPointerException(); }
756	>	}
757	>
758	>	public static class CallableOne implements Callable<Integer> {
759	>	public Integer call() { return one; }
760	>	}
761	>
762	>	public class ShortRunnable extends CheckedRunnable {
763	>	protected void realRun() throws Throwable {
764	>	Thread.sleep(SHORT_DELAY_MS);
765	>	}
766	>	}
767	>
768	>	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
769	>	protected void realRun() throws InterruptedException {
770	>	Thread.sleep(SHORT_DELAY_MS);
771	>	}
772	>	}
773	>
774	>	public class SmallRunnable extends CheckedRunnable {
775	>	protected void realRun() throws Throwable {
776	>	Thread.sleep(SMALL_DELAY_MS);
777	>	}
778	>	}
779	>
780	>	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
781	>	protected void realRun() {
782		try {
783		Thread.sleep(SMALL_DELAY_MS);
784	<	}
785	<	catch(Exception e) {
786	<	threadUnexpectedException();
787	<	}
784	>	} catch (InterruptedException ok) {}
785	>	}
786	>	}
787	>
788	>	public class SmallCallable extends CheckedCallable {
789	>	protected Object realCall() throws InterruptedException {
790	>	Thread.sleep(SMALL_DELAY_MS);
791		return Boolean.TRUE;
792		}
793		}
794
795	<	public class SmallInterruptedRunnable implements Runnable {
795	>	public class MediumRunnable extends CheckedRunnable {
796	>	protected void realRun() throws Throwable {
797	>	Thread.sleep(MEDIUM_DELAY_MS);
798	>	}
799	>	}
800	>
801	>	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
802	>	protected void realRun() throws InterruptedException {
803	>	Thread.sleep(MEDIUM_DELAY_MS);
804	>	}
805	>	}
806	>
807	>	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
808	>	protected void realRun() {
809	>	try {
810	>	Thread.sleep(MEDIUM_DELAY_MS);
811	>	} catch (InterruptedException ok) {}
812	>	}
813	>	}
814	>
815	>	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
816	>	protected void realRun() {
817	>	try {
818	>	Thread.sleep(LONG_DELAY_MS);
819	>	} catch (InterruptedException ok) {}
820	>	}
821	>	}
822	>
823	>	/**
824	>	* For use as ThreadFactory in constructors
825	>	*/
826	>	public static class SimpleThreadFactory implements ThreadFactory {
827	>	public Thread newThread(Runnable r) {
828	>	return new Thread(r);
829	>	}
830	>	}
831	>
832	>	public interface TrackedRunnable extends Runnable {
833	>	boolean isDone();
834	>	}
835	>
836	>	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
837	>	return new TrackedRunnable() {
838	>	private volatile boolean done = false;
839	>	public boolean isDone() { return done; }
840	>	public void run() {
841	>	try {
842	>	Thread.sleep(timeoutMillis);
843	>	done = true;
844	>	} catch (InterruptedException ok) {}
845	>	}
846	>	};
847	>	}
848	>
849	>	public static class TrackedShortRunnable implements Runnable {
850	>	public volatile boolean done = false;
851		public void run() {
852		try {
853	<	Thread.sleep(SMALL_DELAY_MS);
854	<	threadShouldThrow();
855	<	}
256	<	catch(InterruptedException success) {
257	<	}
853	>	Thread.sleep(SHORT_DELAY_MS);
854	>	done = true;
855	>	} catch (InterruptedException ok) {}
856		}
857		}
858
859	+	public static class TrackedSmallRunnable implements Runnable {
860	+	public volatile boolean done = false;
861	+	public void run() {
862	+	try {
863	+	Thread.sleep(SMALL_DELAY_MS);
864	+	done = true;
865	+	} catch (InterruptedException ok) {}
866	+	}
867	+	}
868
869	<	public class MediumRunnable implements Runnable {
869	>	public static class TrackedMediumRunnable implements Runnable {
870	>	public volatile boolean done = false;
871		public void run() {
872		try {
873		Thread.sleep(MEDIUM_DELAY_MS);
874	<	}
875	<	catch(Exception e) {
268	<	threadUnexpectedException();
269	<	}
874	>	done = true;
875	>	} catch (InterruptedException ok) {}
876		}
877		}
878
879	<	public class MediumInterruptedRunnable implements Runnable {
879	>	public static class TrackedLongRunnable implements Runnable {
880	>	public volatile boolean done = false;
881		public void run() {
882		try {
883	<	Thread.sleep(MEDIUM_DELAY_MS);
884	<	threadShouldThrow();
885	<	}
279	<	catch(InterruptedException success) {
280	<	}
883	>	Thread.sleep(LONG_DELAY_MS);
884	>	done = true;
885	>	} catch (InterruptedException ok) {}
886		}
887		}
888
889	<	public class MediumPossiblyInterruptedRunnable implements Runnable {
889	>	public static class TrackedNoOpRunnable implements Runnable {
890	>	public volatile boolean done = false;
891		public void run() {
892	+	done = true;
893	+	}
894	+	}
895	+
896	+	public static class TrackedCallable implements Callable {
897	+	public volatile boolean done = false;
898	+	public Object call() {
899		try {
900	<	Thread.sleep(MEDIUM_DELAY_MS);
900	>	Thread.sleep(SMALL_DELAY_MS);
901	>	done = true;
902	>	} catch (InterruptedException ok) {}
903	>	return Boolean.TRUE;
904	>	}
905	>	}
906	>
907	>	/**
908	>	* Analog of CheckedRunnable for RecursiveAction
909	>	*/
910	>	public abstract class CheckedRecursiveAction extends RecursiveAction {
911	>	protected abstract void realCompute() throws Throwable;
912	>
913	>	public final void compute() {
914	>	try {
915	>	realCompute();
916	>	} catch (Throwable t) {
917	>	threadUnexpectedException(t);
918	>	}
919	>	}
920	>	}
921	>
922	>	/**
923	>	* Analog of CheckedCallable for RecursiveTask
924	>	*/
925	>	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
926	>	protected abstract T realCompute() throws Throwable;
927	>
928	>	public final T compute() {
929	>	try {
930	>	return realCompute();
931	>	} catch (Throwable t) {
932	>	threadUnexpectedException(t);
933	>	return null;
934		}
935	<	catch(InterruptedException success) {
935	>	}
936	>	}
937	>
938	>	/**
939	>	* For use as RejectedExecutionHandler in constructors
940	>	*/
941	>	public static class NoOpREHandler implements RejectedExecutionHandler {
942	>	public void rejectedExecution(Runnable r,
943	>	ThreadPoolExecutor executor) {}
944	>	}
945	>
946	>	/**
947	>	* A CyclicBarrier that fails with AssertionFailedErrors instead
948	>	* of throwing checked exceptions.
949	>	*/
950	>	public class CheckedBarrier extends CyclicBarrier {
951	>	public CheckedBarrier(int parties) { super(parties); }
952	>
953	>	public int await() {
954	>	try {
955	>	return super.await();
956	>	} catch (Exception e) {
957	>	AssertionFailedError afe =
958	>	new AssertionFailedError("Unexpected exception: " + e);
959	>	afe.initCause(e);
960	>	throw afe;
961		}
962		}
963		}
964	<
964	>
965		}

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