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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.4 by dl, Thu Sep 25 11:02:41 2003 UTC vs.
Revision 1.76 by dl, Fri May 6 11:22:07 2011 UTC

#	Line 1 | Line 1
1		/*
2	<	* Written by members of JCP JSR-166 Expert Group and released to the
3	<	* public domain. Use, modify, and redistribute this code in any way
4	<	* without acknowledgement. Other contributors include Andrew Wright,
5	<	* Jeffrey Hayes, Pat Fischer, Mike Judd.
2	>	* Written by Doug Lea with assistance from members of JCP JSR-166
3	>	* Expert Group and released to the public domain, as explained at
4	>	* http://creativecommons.org/publicdomain/zero/1.0/
5	>	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	>	* Pat Fisher, Mike Judd.
7		*/
8
9		import junit.framework.*;
10	<	import java.util.*;
10	>	import java.util.Arrays;
11	>	import java.util.NoSuchElementException;
12	>	import java.util.PropertyPermission;
13		import java.util.concurrent.*;
14	<	import java.io.*;
15	<
14	>	import java.util.concurrent.atomic.AtomicReference;
15	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
16	>	import static java.util.concurrent.TimeUnit.NANOSECONDS;
17	>	import java.security.CodeSource;
18	>	import java.security.Permission;
19	>	import java.security.PermissionCollection;
20	>	import java.security.Permissions;
21	>	import java.security.Policy;
22	>	import java.security.ProtectionDomain;
23	>	import java.security.SecurityPermission;
24
25		/**
26	<	* Base class for JSR166 Junit TCK tests.  Defines some constants and
27	<	* utility methods, as well as a simple framework for helping to make
28	<	* sure that assertions failing in generated threads cause the
29	<	* associated test that generated them to itself fail (which JUnit doe
30	<	* not otherwise arrange).  The rules for creating such tests are:
26	>	* Base class for JSR166 Junit TCK tests.  Defines some constants,
27	>	* utility methods and classes, as well as a simple framework for
28	>	* helping to make sure that assertions failing in generated threads
29	>	* cause the associated test that generated them to itself fail (which
30	>	* JUnit does not otherwise arrange).  The rules for creating such
31	>	* tests are:
32		*
33		* <ol>
34		*
35		* <li> All assertions in code running in generated threads must use
36	<	* the forms {@link threadFail} , {@link threadAssertTrue} {@link
37	<	* threadAssertEquals}, or {@link threadAssertNull}, (not
38	<	* <tt>fail</tt>, <tt>assertTrue</tt>, etc.) It is OK (but not
36	>	* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
37	>	* #threadAssertEquals}, or {@link #threadAssertNull}, (not
38	>	* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
39		* particularly recommended) for other code to use these forms too.
40		* Only the most typically used JUnit assertion methods are defined
41		* this way, but enough to live with.</li>
42		*
43	<	* <li> If you override {@link setUp} or {@link tearDown}, make sure
44	<	* to invoke <tt>super.setUp</tt> and <tt>super.tearDown</tt> within
43	>	* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
44	>	* to invoke {@code super.setUp} and {@code super.tearDown} within
45		* them. These methods are used to clear and check for thread
46		* assertion failures.</li>
47		*
48	<	* <li>All delays and timeouts must use one of the constants {@link
49	<	* SHORT_DELAY_MS}, {@link SMALL_DELAY_MS}, {@link MEDIUM_DELAY_MS},
50	<	* {@link LONG_DELAY_MS}. The idea here is that a SHORT is always
51	<	* discriminatable from zero time, and always allows enough time for
52	<	* the small amounts of computation (creating a thread, calling a few
48	>	* <li>All delays and timeouts must use one of the constants {@code
49	>	* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
50	>	* {@code LONG_DELAY_MS}. The idea here is that a SHORT is always
51	>	* discriminable from zero time, and always allows enough time for the
52	>	* small amounts of computation (creating a thread, calling a few
53		* methods, etc) needed to reach a timeout point. Similarly, a SMALL
54		* is always discriminable as larger than SHORT and smaller than
55		* MEDIUM.  And so on. These constants are set to conservative values,
56		* but even so, if there is ever any doubt, they can all be increased
57	<	* in one spot to rerun tests on slower platforms</li>
57	>	* in one spot to rerun tests on slower platforms.</li>
58		*
59		* <li> All threads generated must be joined inside each test case
60	<	* method (or <tt>fail</tt> to do so) before returning from the
61	<	* method. The {@link joinPool} method can be used to do this when
60	>	* method (or {@code fail} to do so) before returning from the
61	>	* method. The {@code joinPool} method can be used to do this when
62		* using Executors.</li>
63		*
64		* </ol>
65	+	*
66	+	* <p> <b>Other notes</b>
67	+	* <ul>
68	+	*
69	+	* <li> Usually, there is one testcase method per JSR166 method
70	+	* covering "normal" operation, and then as many exception-testing
71	+	* methods as there are exceptions the method can throw. Sometimes
72	+	* there are multiple tests per JSR166 method when the different
73	+	* "normal" behaviors differ significantly. And sometimes testcases
74	+	* cover multiple methods when they cannot be tested in
75	+	* isolation.</li>
76	+	*
77	+	* <li> The documentation style for testcases is to provide as javadoc
78	+	* a simple sentence or two describing the property that the testcase
79	+	* method purports to test. The javadocs do not say anything about how
80	+	* the property is tested. To find out, read the code.</li>
81	+	*
82	+	* <li> These tests are "conformance tests", and do not attempt to
83	+	* test throughput, latency, scalability or other performance factors
84	+	* (see the separate "jtreg" tests for a set intended to check these
85	+	* for the most central aspects of functionality.) So, most tests use
86	+	* the smallest sensible numbers of threads, collection sizes, etc
87	+	* needed to check basic conformance.</li>
88	+	*
89	+	* <li>The test classes currently do not declare inclusion in
90	+	* any particular package to simplify things for people integrating
91	+	* them in TCK test suites.</li>
92	+	*
93	+	* <li> As a convenience, the {@code main} of this class (JSR166TestCase)
94	+	* runs all JSR166 unit tests.</li>
95	+	*
96	+	* </ul>
97		*/
98		public class JSR166TestCase extends TestCase {
99	+	private static final boolean useSecurityManager =
100	+	Boolean.getBoolean("jsr166.useSecurityManager");
101	+
102	+	protected static final boolean expensiveTests =
103	+	Boolean.getBoolean("jsr166.expensiveTests");
104	+
105	+	/**
106	+	* If true, report on stdout all "slow" tests, that is, ones that
107	+	* take more than profileThreshold milliseconds to execute.
108	+	*/
109	+	private static final boolean profileTests =
110	+	Boolean.getBoolean("jsr166.profileTests");
111	+
112	+	/**
113	+	* The number of milliseconds that tests are permitted for
114	+	* execution without being reported, when profileTests is set.
115	+	*/
116	+	private static final long profileThreshold =
117	+	Long.getLong("jsr166.profileThreshold", 100);
118	+
119	+	protected void runTest() throws Throwable {
120	+	if (profileTests)
121	+	runTestProfiled();
122	+	else
123	+	super.runTest();
124	+	}
125	+
126	+	protected void runTestProfiled() throws Throwable {
127	+	long t0 = System.nanoTime();
128	+	try {
129	+	super.runTest();
130	+	} finally {
131	+	long elapsedMillis =
132	+	(System.nanoTime() - t0) / (1000L * 1000L);
133	+	if (elapsedMillis >= profileThreshold)
134	+	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
135	+	}
136	+	}
137	+
138	+	/**
139	+	* Runs all JSR166 unit tests using junit.textui.TestRunner
140	+	*/
141	+	public static void main(String[] args) {
142	+	if (useSecurityManager) {
143	+	System.err.println("Setting a permissive security manager");
144	+	Policy.setPolicy(permissivePolicy());
145	+	System.setSecurityManager(new SecurityManager());
146	+	}
147	+	int iters = (args.length == 0) ? 1 : Integer.parseInt(args[0]);
148	+
149	+	Test s = suite();
150	+	for (int i = 0; i < iters; ++i) {
151	+	junit.textui.TestRunner.run(s);
152	+	System.gc();
153	+	System.runFinalization();
154	+	}
155	+	System.exit(0);
156	+	}
157	+
158	+	public static TestSuite newTestSuite(Object... suiteOrClasses) {
159	+	TestSuite suite = new TestSuite();
160	+	for (Object suiteOrClass : suiteOrClasses) {
161	+	if (suiteOrClass instanceof TestSuite)
162	+	suite.addTest((TestSuite) suiteOrClass);
163	+	else if (suiteOrClass instanceof Class)
164	+	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
165	+	else
166	+	throw new ClassCastException("not a test suite or class");
167	+	}
168	+	return suite;
169	+	}
170	+
171	+	/**
172	+	* Collects all JSR166 unit tests as one suite.
173	+	*/
174	+	public static Test suite() {
175	+	return newTestSuite(
176	+	ForkJoinPoolTest.suite(),
177	+	ForkJoinTaskTest.suite(),
178	+	RecursiveActionTest.suite(),
179	+	RecursiveTaskTest.suite(),
180	+	LinkedTransferQueueTest.suite(),
181	+	PhaserTest.suite(),
182	+	ThreadLocalRandomTest.suite(),
183	+	AbstractExecutorServiceTest.suite(),
184	+	AbstractQueueTest.suite(),
185	+	AbstractQueuedSynchronizerTest.suite(),
186	+	AbstractQueuedLongSynchronizerTest.suite(),
187	+	ArrayBlockingQueueTest.suite(),
188	+	ArrayDequeTest.suite(),
189	+	AtomicBooleanTest.suite(),
190	+	AtomicIntegerArrayTest.suite(),
191	+	AtomicIntegerFieldUpdaterTest.suite(),
192	+	AtomicIntegerTest.suite(),
193	+	AtomicLongArrayTest.suite(),
194	+	AtomicLongFieldUpdaterTest.suite(),
195	+	AtomicLongTest.suite(),
196	+	AtomicMarkableReferenceTest.suite(),
197	+	AtomicReferenceArrayTest.suite(),
198	+	AtomicReferenceFieldUpdaterTest.suite(),
199	+	AtomicReferenceTest.suite(),
200	+	AtomicStampedReferenceTest.suite(),
201	+	ConcurrentHashMapTest.suite(),
202	+	ConcurrentLinkedDequeTest.suite(),
203	+	ConcurrentLinkedQueueTest.suite(),
204	+	ConcurrentSkipListMapTest.suite(),
205	+	ConcurrentSkipListSubMapTest.suite(),
206	+	ConcurrentSkipListSetTest.suite(),
207	+	ConcurrentSkipListSubSetTest.suite(),
208	+	CopyOnWriteArrayListTest.suite(),
209	+	CopyOnWriteArraySetTest.suite(),
210	+	CountDownLatchTest.suite(),
211	+	CyclicBarrierTest.suite(),
212	+	DelayQueueTest.suite(),
213	+	EntryTest.suite(),
214	+	ExchangerTest.suite(),
215	+	ExecutorsTest.suite(),
216	+	ExecutorCompletionServiceTest.suite(),
217	+	FutureTaskTest.suite(),
218	+	LinkedBlockingDequeTest.suite(),
219	+	LinkedBlockingQueueTest.suite(),
220	+	LinkedListTest.suite(),
221	+	LockSupportTest.suite(),
222	+	PriorityBlockingQueueTest.suite(),
223	+	PriorityQueueTest.suite(),
224	+	ReentrantLockTest.suite(),
225	+	ReentrantReadWriteLockTest.suite(),
226	+	ScheduledExecutorTest.suite(),
227	+	ScheduledExecutorSubclassTest.suite(),
228	+	SemaphoreTest.suite(),
229	+	SynchronousQueueTest.suite(),
230	+	SystemTest.suite(),
231	+	ThreadLocalTest.suite(),
232	+	ThreadPoolExecutorTest.suite(),
233	+	ThreadPoolExecutorSubclassTest.suite(),
234	+	ThreadTest.suite(),
235	+	TimeUnitTest.suite(),
236	+	TreeMapTest.suite(),
237	+	TreeSetTest.suite(),
238	+	TreeSubMapTest.suite(),
239	+	TreeSubSetTest.suite());
240	+	}
241	+
242
243		public static long SHORT_DELAY_MS;
244		public static long SMALL_DELAY_MS;
#	Line 60 | Line 247 | public class JSR166TestCase extends Test
247
248
249		/**
250	<	* Return the shortest timed delay. This could
251	<	* be reimplmented to use for example a Property.
252	<	*/
250	>	* Returns the shortest timed delay. This could
251	>	* be reimplemented to use for example a Property.
252	>	*/
253		protected long getShortDelay() {
254	<	return 100;
254	>	return 50;
255		}
256
257
258		/**
259	<	* Set delays as multiples fo SHORT_DELAY.
259	>	* Sets delays as multiples of SHORT_DELAY.
260		*/
261	<	protected  void setDelays() {
261	>	protected void setDelays() {
262		SHORT_DELAY_MS = getShortDelay();
263	<	SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
263	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
264		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
265	<	LONG_DELAY_MS = SHORT_DELAY_MS * 50;
265	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
266		}
267
268		/**
269	<	* Flag set true if any threadAssert methods fail
269	>	* The first exception encountered if any threadAssertXXX method fails.
270		*/
271	<	protected volatile boolean threadFailed;
271	>	private final AtomicReference<Throwable> threadFailure
272	>	= new AtomicReference<Throwable>(null);
273
274		/**
275	<	* Initialize test to indicate that no thread assertions have failed
275	>	* Records an exception so that it can be rethrown later in the test
276	>	* harness thread, triggering a test case failure.  Only the first
277	>	* failure is recorded; subsequent calls to this method from within
278	>	* the same test have no effect.
279		*/
280	<	public void setUp() {
280	>	public void threadRecordFailure(Throwable t) {
281	>	threadFailure.compareAndSet(null, t);
282	>	}
283	>
284	>	public void setUp() {
285		setDelays();
91	–	threadFailed = false;
286		}
287
288		/**
289	<	* Trigger test case failure if any thread assertions have failed
289	>	* Triggers test case failure if any thread assertions have failed,
290	>	* by rethrowing, in the test harness thread, any exception recorded
291	>	* earlier by threadRecordFailure.
292		*/
293	<	public void tearDown() {
294	<	assertFalse(threadFailed);
293	>	public void tearDown() throws Exception {
294	>	Throwable t = threadFailure.getAndSet(null);
295	>	if (t != null) {
296	>	if (t instanceof Error)
297	>	throw (Error) t;
298	>	else if (t instanceof RuntimeException)
299	>	throw (RuntimeException) t;
300	>	else if (t instanceof Exception)
301	>	throw (Exception) t;
302	>	else {
303	>	AssertionFailedError afe =
304	>	new AssertionFailedError(t.toString());
305	>	afe.initCause(t);
306	>	throw afe;
307	>	}
308	>	}
309		}
310
311	+	/**
312	+	* Just like fail(reason), but additionally recording (using
313	+	* threadRecordFailure) any AssertionFailedError thrown, so that
314	+	* the current testcase will fail.
315	+	*/
316		public void threadFail(String reason) {
317	<	threadFailed = true;
318	<	fail(reason);
317	>	try {
318	>	fail(reason);
319	>	} catch (AssertionFailedError t) {
320	>	threadRecordFailure(t);
321	>	fail(reason);
322	>	}
323		}
324
325	+	/**
326	+	* Just like assertTrue(b), but additionally recording (using
327	+	* threadRecordFailure) any AssertionFailedError thrown, so that
328	+	* the current testcase will fail.
329	+	*/
330		public void threadAssertTrue(boolean b) {
331	<	if (!b) {
108	<	threadFailed = true;
331	>	try {
332		assertTrue(b);
333	+	} catch (AssertionFailedError t) {
334	+	threadRecordFailure(t);
335	+	throw t;
336		}
337		}
338	+
339	+	/**
340	+	* Just like assertFalse(b), but additionally recording (using
341	+	* threadRecordFailure) any AssertionFailedError thrown, so that
342	+	* the current testcase will fail.
343	+	*/
344		public void threadAssertFalse(boolean b) {
345	<	if (b) {
114	<	threadFailed = true;
345	>	try {
346		assertFalse(b);
347	+	} catch (AssertionFailedError t) {
348	+	threadRecordFailure(t);
349	+	throw t;
350		}
351		}
352	+
353	+	/**
354	+	* Just like assertNull(x), but additionally recording (using
355	+	* threadRecordFailure) any AssertionFailedError thrown, so that
356	+	* the current testcase will fail.
357	+	*/
358		public void threadAssertNull(Object x) {
359	<	if (x != null) {
120	<	threadFailed = true;
359	>	try {
360		assertNull(x);
361	+	} catch (AssertionFailedError t) {
362	+	threadRecordFailure(t);
363	+	throw t;
364		}
365		}
366	+
367	+	/**
368	+	* Just like assertEquals(x, y), but additionally recording (using
369	+	* threadRecordFailure) any AssertionFailedError thrown, so that
370	+	* the current testcase will fail.
371	+	*/
372		public void threadAssertEquals(long x, long y) {
373	<	if (x != y) {
126	<	threadFailed = true;
373	>	try {
374		assertEquals(x, y);
375	+	} catch (AssertionFailedError t) {
376	+	threadRecordFailure(t);
377	+	throw t;
378		}
379		}
380	+
381	+	/**
382	+	* Just like assertEquals(x, y), but additionally recording (using
383	+	* threadRecordFailure) any AssertionFailedError thrown, so that
384	+	* the current testcase will fail.
385	+	*/
386		public void threadAssertEquals(Object x, Object y) {
387	<	if (x != y && (x == null || !x.equals(y))) {
132	<	threadFailed = true;
387	>	try {
388		assertEquals(x, y);
389	+	} catch (AssertionFailedError t) {
390	+	threadRecordFailure(t);
391	+	throw t;
392	+	} catch (Throwable t) {
393	+	threadUnexpectedException(t);
394		}
395		}
396
397	+	/**
398	+	* Just like assertSame(x, y), but additionally recording (using
399	+	* threadRecordFailure) any AssertionFailedError thrown, so that
400	+	* the current testcase will fail.
401	+	*/
402	+	public void threadAssertSame(Object x, Object y) {
403	+	try {
404	+	assertSame(x, y);
405	+	} catch (AssertionFailedError t) {
406	+	threadRecordFailure(t);
407	+	throw t;
408	+	}
409	+	}
410	+
411	+	/**
412	+	* Calls threadFail with message "should throw exception".
413	+	*/
414		public void threadShouldThrow() {
415	<	threadFailed = true;
139	<	fail("should throw exception");
415	>	threadFail("should throw exception");
416		}
417
418	<	public void threadUnexpectedException() {
419	<	threadFailed = true;
420	<	fail("Unexpected exception");
418	>	/**
419	>	* Calls threadFail with message "should throw" + exceptionName.
420	>	*/
421	>	public void threadShouldThrow(String exceptionName) {
422	>	threadFail("should throw " + exceptionName);
423		}
424
425	+	/**
426	+	* Records the given exception using {@link #threadRecordFailure},
427	+	* then rethrows the exception, wrapping it in an
428	+	* AssertionFailedError if necessary.
429	+	*/
430	+	public void threadUnexpectedException(Throwable t) {
431	+	threadRecordFailure(t);
432	+	t.printStackTrace();
433	+	if (t instanceof RuntimeException)
434	+	throw (RuntimeException) t;
435	+	else if (t instanceof Error)
436	+	throw (Error) t;
437	+	else {
438	+	AssertionFailedError afe =
439	+	new AssertionFailedError("unexpected exception: " + t);
440	+	t.initCause(t);
441	+	throw afe;
442	+	}
443	+	}
444	+
445	+	/**
446	+	* Delays, via Thread.sleep for the given millisecond delay, but
447	+	* if the sleep is shorter than specified, may re-sleep or yield
448	+	* until time elapses.
449	+	*/
450	+	public static void delay(long ms) throws InterruptedException {
451	+	long startTime = System.nanoTime();
452	+	long ns = ms * 1000 * 1000;
453	+	for (;;) {
454	+	if (ms > 0L)
455	+	Thread.sleep(ms);
456	+	else // too short to sleep
457	+	Thread.yield();
458	+	long d = ns - (System.nanoTime() - startTime);
459	+	if (d > 0L)
460	+	ms = d / (1000 * 1000);
461	+	else
462	+	break;
463	+	}
464	+	}
465
466		/**
467	<	* Wait out termination of a thread pool or fail doing so
467	>	* Waits out termination of a thread pool or fails doing so.
468		*/
469		public void joinPool(ExecutorService exec) {
470		try {
471		exec.shutdown();
472	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
473	<	} catch(InterruptedException ie) {
474	<	fail("Unexpected exception");
472	>	assertTrue("ExecutorService did not terminate in a timely manner",
473	>	exec.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS));
474	>	} catch (SecurityException ok) {
475	>	// Allowed in case test doesn't have privs
476	>	} catch (InterruptedException ie) {
477	>	fail("Unexpected InterruptedException");
478		}
479		}
480
481	<
481	>
482	>	/**
483	>	* Fails with message "should throw exception".
484	>	*/
485		public void shouldThrow() {
486		fail("Should throw exception");
487		}
488
489	<	public void unexpectedException() {
490	<	fail("Unexpected exception");
489	>	/**
490	>	* Fails with message "should throw " + exceptionName.
491	>	*/
492	>	public void shouldThrow(String exceptionName) {
493	>	fail("Should throw " + exceptionName);
494		}
495
169	–
496		/**
497		* The number of elements to place in collections, arrays, etc.
498		*/
#	Line 174 | Line 500 | public class JSR166TestCase extends Test
500
501		// Some convenient Integer constants
502
503	<	public static final Integer zero = new Integer(0);
504	<	public static final Integer one = new Integer(1);
505	<	public static final Integer two = new Integer(2);
506	<	public static final Integer three  = new Integer(3);
503	>	public static final Integer zero  = new Integer(0);
504	>	public static final Integer one   = new Integer(1);
505	>	public static final Integer two   = new Integer(2);
506	>	public static final Integer three = new Integer(3);
507		public static final Integer four  = new Integer(4);
508		public static final Integer five  = new Integer(5);
509	<	public static final Integer six = new Integer(6);
509	>	public static final Integer six   = new Integer(6);
510		public static final Integer seven = new Integer(7);
511		public static final Integer eight = new Integer(8);
512	<	public static final Integer nine = new Integer(9);
512	>	public static final Integer nine  = new Integer(9);
513		public static final Integer m1  = new Integer(-1);
514		public static final Integer m2  = new Integer(-2);
515		public static final Integer m3  = new Integer(-3);
516	<	public static final Integer m4 = new Integer(-4);
517	<	public static final Integer m5 = new Integer(-5);
516	>	public static final Integer m4  = new Integer(-4);
517	>	public static final Integer m5  = new Integer(-5);
518	>	public static final Integer m6  = new Integer(-6);
519		public static final Integer m10 = new Integer(-10);
520
521
522	<	// Some convenient Runnable classes
522	>	/**
523	>	* Runs Runnable r with a security policy that permits precisely
524	>	* the specified permissions.  If there is no current security
525	>	* manager, the runnable is run twice, both with and without a
526	>	* security manager.  We require that any security manager permit
527	>	* getPolicy/setPolicy.
528	>	*/
529	>	public void runWithPermissions(Runnable r, Permission... permissions) {
530	>	SecurityManager sm = System.getSecurityManager();
531	>	if (sm == null) {
532	>	r.run();
533	>	Policy savedPolicy = Policy.getPolicy();
534	>	try {
535	>	Policy.setPolicy(permissivePolicy());
536	>	System.setSecurityManager(new SecurityManager());
537	>	runWithPermissions(r, permissions);
538	>	} finally {
539	>	System.setSecurityManager(null);
540	>	Policy.setPolicy(savedPolicy);
541	>	}
542	>	} else {
543	>	Policy savedPolicy = Policy.getPolicy();
544	>	AdjustablePolicy policy = new AdjustablePolicy(permissions);
545	>	Policy.setPolicy(policy);
546
547	<	public static class NoOpRunnable implements Runnable {
548	<	public void run() {}
547	>	try {
548	>	r.run();
549	>	} finally {
550	>	policy.addPermission(new SecurityPermission("setPolicy"));
551	>	Policy.setPolicy(savedPolicy);
552	>	}
553	>	}
554		}
555
556	<	public static class NoOpCallable implements Callable {
557	<	public Object call() { return Boolean.TRUE; }
556	>	/**
557	>	* Runs a runnable without any permissions.
558	>	*/
559	>	public void runWithoutPermissions(Runnable r) {
560	>	runWithPermissions(r);
561		}
562
563	<	public class ShortRunnable implements Runnable {
564	<	public void run() {
565	<	try {
566	<	Thread.sleep(SHORT_DELAY_MS);
563	>	/**
564	>	* A security policy where new permissions can be dynamically added
565	>	* or all cleared.
566	>	*/
567	>	public static class AdjustablePolicy extends java.security.Policy {
568	>	Permissions perms = new Permissions();
569	>	AdjustablePolicy(Permission... permissions) {
570	>	for (Permission permission : permissions)
571	>	perms.add(permission);
572	>	}
573	>	void addPermission(Permission perm) { perms.add(perm); }
574	>	void clearPermissions() { perms = new Permissions(); }
575	>	public PermissionCollection getPermissions(CodeSource cs) {
576	>	return perms;
577	>	}
578	>	public PermissionCollection getPermissions(ProtectionDomain pd) {
579	>	return perms;
580	>	}
581	>	public boolean implies(ProtectionDomain pd, Permission p) {
582	>	return perms.implies(p);
583	>	}
584	>	public void refresh() {}
585	>	}
586	>
587	>	/**
588	>	* Returns a policy containing all the permissions we ever need.
589	>	*/
590	>	public static Policy permissivePolicy() {
591	>	return new AdjustablePolicy
592	>	// Permissions j.u.c. needs directly
593	>	(new RuntimePermission("modifyThread"),
594	>	new RuntimePermission("getClassLoader"),
595	>	new RuntimePermission("setContextClassLoader"),
596	>	// Permissions needed to change permissions!
597	>	new SecurityPermission("getPolicy"),
598	>	new SecurityPermission("setPolicy"),
599	>	new RuntimePermission("setSecurityManager"),
600	>	// Permissions needed by the junit test harness
601	>	new RuntimePermission("accessDeclaredMembers"),
602	>	new PropertyPermission("*", "read"),
603	>	new java.io.FilePermission("<<ALL FILES>>", "read"));
604	>	}
605	>
606	>	/**
607	>	* Sleeps until the given time has elapsed.
608	>	* Throws AssertionFailedError if interrupted.
609	>	*/
610	>	void sleep(long millis) {
611	>	try {
612	>	delay(millis);
613	>	} catch (InterruptedException ie) {
614	>	AssertionFailedError afe =
615	>	new AssertionFailedError("Unexpected InterruptedException");
616	>	afe.initCause(ie);
617	>	throw afe;
618	>	}
619	>	}
620	>
621	>	/**
622	>	* Sleeps until the timeout has elapsed, or interrupted.
623	>	* Does <em>NOT</em> throw InterruptedException.
624	>	*/
625	>	void sleepTillInterrupted(long timeoutMillis) {
626	>	try {
627	>	Thread.sleep(timeoutMillis);
628	>	} catch (InterruptedException wakeup) {}
629	>	}
630	>
631	>	/**
632	>	* Waits up to the specified number of milliseconds for the given
633	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
634	>	*/
635	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
636	>	long timeoutNanos = timeoutMillis * 1000L * 1000L;
637	>	long t0 = System.nanoTime();
638	>	for (;;) {
639	>	Thread.State s = thread.getState();
640	>	if (s == Thread.State.BLOCKED ||
641	>	s == Thread.State.WAITING ||
642	>	s == Thread.State.TIMED_WAITING)
643	>	return;
644	>	else if (s == Thread.State.TERMINATED)
645	>	fail("Unexpected thread termination");
646	>	else if (System.nanoTime() - t0 > timeoutNanos) {
647	>	threadAssertTrue(thread.isAlive());
648	>	return;
649		}
650	<	catch(Exception e) {
651	<	threadUnexpectedException();
650	>	Thread.yield();
651	>	}
652	>	}
653	>
654	>	/**
655	>	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
656	>	* state: BLOCKED, WAITING, or TIMED_WAITING.
657	>	*/
658	>	void waitForThreadToEnterWaitState(Thread thread) {
659	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
660	>	}
661	>
662	>	/**
663	>	* Returns the number of milliseconds since time given by
664	>	* startNanoTime, which must have been previously returned from a
665	>	* call to {@link System.nanoTime()}.
666	>	*/
667	>	long millisElapsedSince(long startNanoTime) {
668	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
669	>	}
670	>
671	>	/**
672	>	* Returns a new started daemon Thread running the given runnable.
673	>	*/
674	>	Thread newStartedThread(Runnable runnable) {
675	>	Thread t = new Thread(runnable);
676	>	t.setDaemon(true);
677	>	t.start();
678	>	return t;
679	>	}
680	>
681	>	/**
682	>	* Waits for the specified time (in milliseconds) for the thread
683	>	* to terminate (using {@link Thread#join(long)}), else interrupts
684	>	* the thread (in the hope that it may terminate later) and fails.
685	>	*/
686	>	void awaitTermination(Thread t, long timeoutMillis) {
687	>	try {
688	>	t.join(timeoutMillis);
689	>	} catch (InterruptedException ie) {
690	>	threadUnexpectedException(ie);
691	>	} finally {
692	>	if (t.isAlive()) {
693	>	t.interrupt();
694	>	fail("Test timed out");
695		}
696		}
697		}
698
699	<	public class ShortInterruptedRunnable implements Runnable {
700	<	public void run() {
699	>	/**
700	>	* Waits for LONG_DELAY_MS milliseconds for the thread to
701	>	* terminate (using {@link Thread#join(long)}), else interrupts
702	>	* the thread (in the hope that it may terminate later) and fails.
703	>	*/
704	>	void awaitTermination(Thread t) {
705	>	awaitTermination(t, LONG_DELAY_MS);
706	>	}
707	>
708	>	// Some convenient Runnable classes
709	>
710	>	public abstract class CheckedRunnable implements Runnable {
711	>	protected abstract void realRun() throws Throwable;
712	>
713	>	public final void run() {
714		try {
715	<	Thread.sleep(SHORT_DELAY_MS);
716	<	threadShouldThrow();
715	>	realRun();
716	>	} catch (Throwable t) {
717	>	threadUnexpectedException(t);
718		}
719	<	catch(InterruptedException success) {
719	>	}
720	>	}
721	>
722	>	public abstract class RunnableShouldThrow implements Runnable {
723	>	protected abstract void realRun() throws Throwable;
724	>
725	>	final Class<?> exceptionClass;
726	>
727	>	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
728	>	this.exceptionClass = exceptionClass;
729	>	}
730	>
731	>	public final void run() {
732	>	try {
733	>	realRun();
734	>	threadShouldThrow(exceptionClass.getSimpleName());
735	>	} catch (Throwable t) {
736	>	if (! exceptionClass.isInstance(t))
737	>	threadUnexpectedException(t);
738		}
739		}
740		}
741
742	<	public class SmallRunnable implements Runnable {
743	<	public void run() {
742	>	public abstract class ThreadShouldThrow extends Thread {
743	>	protected abstract void realRun() throws Throwable;
744	>
745	>	final Class<?> exceptionClass;
746	>
747	>	<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) {
748	>	this.exceptionClass = exceptionClass;
749	>	}
750	>
751	>	public final void run() {
752		try {
753	<	Thread.sleep(SMALL_DELAY_MS);
753	>	realRun();
754	>	threadShouldThrow(exceptionClass.getSimpleName());
755	>	} catch (Throwable t) {
756	>	if (! exceptionClass.isInstance(t))
757	>	threadUnexpectedException(t);
758		}
759	<	catch(Exception e) {
760	<	threadUnexpectedException();
759	>	}
760	>	}
761	>
762	>	public abstract class CheckedInterruptedRunnable implements Runnable {
763	>	protected abstract void realRun() throws Throwable;
764	>
765	>	public final void run() {
766	>	try {
767	>	realRun();
768	>	threadShouldThrow("InterruptedException");
769	>	} catch (InterruptedException success) {
770	>	} catch (Throwable t) {
771	>	threadUnexpectedException(t);
772		}
773		}
774		}
775
776	<	public class SmallCallable implements Callable {
777	<	public Object call() {
776	>	public abstract class CheckedCallable<T> implements Callable<T> {
777	>	protected abstract T realCall() throws Throwable;
778	>
779	>	public final T call() {
780		try {
781	<	Thread.sleep(SMALL_DELAY_MS);
781	>	return realCall();
782	>	} catch (Throwable t) {
783	>	threadUnexpectedException(t);
784	>	return null;
785		}
786	<	catch(Exception e) {
787	<	threadUnexpectedException();
786	>	}
787	>	}
788	>
789	>	public abstract class CheckedInterruptedCallable<T>
790	>	implements Callable<T> {
791	>	protected abstract T realCall() throws Throwable;
792	>
793	>	public final T call() {
794	>	try {
795	>	T result = realCall();
796	>	threadShouldThrow("InterruptedException");
797	>	return result;
798	>	} catch (InterruptedException success) {
799	>	} catch (Throwable t) {
800	>	threadUnexpectedException(t);
801		}
802	+	return null;
803	+	}
804	+	}
805	+
806	+	public static class NoOpRunnable implements Runnable {
807	+	public void run() {}
808	+	}
809	+
810	+	public static class NoOpCallable implements Callable {
811	+	public Object call() { return Boolean.TRUE; }
812	+	}
813	+
814	+	public static final String TEST_STRING = "a test string";
815	+
816	+	public static class StringTask implements Callable<String> {
817	+	public String call() { return TEST_STRING; }
818	+	}
819	+
820	+	public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
821	+	return new CheckedCallable<String>() {
822	+	protected String realCall() {
823	+	try {
824	+	latch.await();
825	+	} catch (InterruptedException quittingTime) {}
826	+	return TEST_STRING;
827	+	}};
828	+	}
829	+
830	+	public Runnable awaiter(final CountDownLatch latch) {
831	+	return new CheckedRunnable() {
832	+	public void realRun() throws InterruptedException {
833	+	latch.await();
834	+	}};
835	+	}
836	+
837	+	public static class NPETask implements Callable<String> {
838	+	public String call() { throw new NullPointerException(); }
839	+	}
840	+
841	+	public static class CallableOne implements Callable<Integer> {
842	+	public Integer call() { return one; }
843	+	}
844	+
845	+	public class ShortRunnable extends CheckedRunnable {
846	+	protected void realRun() throws Throwable {
847	+	delay(SHORT_DELAY_MS);
848	+	}
849	+	}
850	+
851	+	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
852	+	protected void realRun() throws InterruptedException {
853	+	delay(SHORT_DELAY_MS);
854	+	}
855	+	}
856	+
857	+	public class SmallRunnable extends CheckedRunnable {
858	+	protected void realRun() throws Throwable {
859	+	delay(SMALL_DELAY_MS);
860	+	}
861	+	}
862	+
863	+	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
864	+	protected void realRun() {
865	+	try {
866	+	delay(SMALL_DELAY_MS);
867	+	} catch (InterruptedException ok) {}
868	+	}
869	+	}
870	+
871	+	public class SmallCallable extends CheckedCallable {
872	+	protected Object realCall() throws InterruptedException {
873	+	delay(SMALL_DELAY_MS);
874		return Boolean.TRUE;
875		}
876		}
877
878	<	public class SmallInterruptedRunnable implements Runnable {
878	>	public class MediumRunnable extends CheckedRunnable {
879	>	protected void realRun() throws Throwable {
880	>	delay(MEDIUM_DELAY_MS);
881	>	}
882	>	}
883	>
884	>	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
885	>	protected void realRun() throws InterruptedException {
886	>	delay(MEDIUM_DELAY_MS);
887	>	}
888	>	}
889	>
890	>	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
891	>	return new CheckedRunnable() {
892	>	protected void realRun() {
893	>	try {
894	>	delay(timeoutMillis);
895	>	} catch (InterruptedException ok) {}
896	>	}};
897	>	}
898	>
899	>	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
900	>	protected void realRun() {
901	>	try {
902	>	delay(MEDIUM_DELAY_MS);
903	>	} catch (InterruptedException ok) {}
904	>	}
905	>	}
906	>
907	>	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
908	>	protected void realRun() {
909	>	try {
910	>	delay(LONG_DELAY_MS);
911	>	} catch (InterruptedException ok) {}
912	>	}
913	>	}
914	>
915	>	/**
916	>	* For use as ThreadFactory in constructors
917	>	*/
918	>	public static class SimpleThreadFactory implements ThreadFactory {
919	>	public Thread newThread(Runnable r) {
920	>	return new Thread(r);
921	>	}
922	>	}
923	>
924	>	public interface TrackedRunnable extends Runnable {
925	>	boolean isDone();
926	>	}
927	>
928	>	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
929	>	return new TrackedRunnable() {
930	>	private volatile boolean done = false;
931	>	public boolean isDone() { return done; }
932	>	public void run() {
933	>	try {
934	>	delay(timeoutMillis);
935	>	done = true;
936	>	} catch (InterruptedException ok) {}
937	>	}
938	>	};
939	>	}
940	>
941	>	public static class TrackedShortRunnable implements Runnable {
942	>	public volatile boolean done = false;
943		public void run() {
944		try {
945	<	Thread.sleep(SMALL_DELAY_MS);
946	<	threadShouldThrow();
947	<	}
256	<	catch(InterruptedException success) {
257	<	}
945	>	delay(SHORT_DELAY_MS);
946	>	done = true;
947	>	} catch (InterruptedException ok) {}
948		}
949		}
950
951	+	public static class TrackedSmallRunnable implements Runnable {
952	+	public volatile boolean done = false;
953	+	public void run() {
954	+	try {
955	+	delay(SMALL_DELAY_MS);
956	+	done = true;
957	+	} catch (InterruptedException ok) {}
958	+	}
959	+	}
960
961	<	public class MediumRunnable implements Runnable {
961	>	public static class TrackedMediumRunnable implements Runnable {
962	>	public volatile boolean done = false;
963		public void run() {
964		try {
965	<	Thread.sleep(MEDIUM_DELAY_MS);
966	<	}
967	<	catch(Exception e) {
268	<	threadUnexpectedException();
269	<	}
965	>	delay(MEDIUM_DELAY_MS);
966	>	done = true;
967	>	} catch (InterruptedException ok) {}
968		}
969		}
970
971	<	public class MediumInterruptedRunnable implements Runnable {
971	>	public static class TrackedLongRunnable implements Runnable {
972	>	public volatile boolean done = false;
973		public void run() {
974		try {
975	<	Thread.sleep(MEDIUM_DELAY_MS);
976	<	threadShouldThrow();
977	<	}
279	<	catch(InterruptedException success) {
280	<	}
975	>	delay(LONG_DELAY_MS);
976	>	done = true;
977	>	} catch (InterruptedException ok) {}
978		}
979		}
980
981	<	public class MediumPossiblyInterruptedRunnable implements Runnable {
981	>	public static class TrackedNoOpRunnable implements Runnable {
982	>	public volatile boolean done = false;
983		public void run() {
984	+	done = true;
985	+	}
986	+	}
987	+
988	+	public static class TrackedCallable implements Callable {
989	+	public volatile boolean done = false;
990	+	public Object call() {
991	+	try {
992	+	delay(SMALL_DELAY_MS);
993	+	done = true;
994	+	} catch (InterruptedException ok) {}
995	+	return Boolean.TRUE;
996	+	}
997	+	}
998	+
999	+	/**
1000	+	* Analog of CheckedRunnable for RecursiveAction
1001	+	*/
1002	+	public abstract class CheckedRecursiveAction extends RecursiveAction {
1003	+	protected abstract void realCompute() throws Throwable;
1004	+
1005	+	public final void compute() {
1006		try {
1007	<	Thread.sleep(MEDIUM_DELAY_MS);
1007	>	realCompute();
1008	>	} catch (Throwable t) {
1009	>	threadUnexpectedException(t);
1010		}
1011	<	catch(InterruptedException success) {
1011	>	}
1012	>	}
1013	>
1014	>	/**
1015	>	* Analog of CheckedCallable for RecursiveTask
1016	>	*/
1017	>	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1018	>	protected abstract T realCompute() throws Throwable;
1019	>
1020	>	public final T compute() {
1021	>	try {
1022	>	return realCompute();
1023	>	} catch (Throwable t) {
1024	>	threadUnexpectedException(t);
1025	>	return null;
1026	>	}
1027	>	}
1028	>	}
1029	>
1030	>	/**
1031	>	* For use as RejectedExecutionHandler in constructors
1032	>	*/
1033	>	public static class NoOpREHandler implements RejectedExecutionHandler {
1034	>	public void rejectedExecution(Runnable r,
1035	>	ThreadPoolExecutor executor) {}
1036	>	}
1037	>
1038	>	/**
1039	>	* A CyclicBarrier that fails with AssertionFailedErrors instead
1040	>	* of throwing checked exceptions.
1041	>	*/
1042	>	public class CheckedBarrier extends CyclicBarrier {
1043	>	public CheckedBarrier(int parties) { super(parties); }
1044	>
1045	>	public int await() {
1046	>	try {
1047	>	return super.await();
1048	>	} catch (Exception e) {
1049	>	AssertionFailedError afe =
1050	>	new AssertionFailedError("Unexpected exception: " + e);
1051	>	afe.initCause(e);
1052	>	throw afe;
1053		}
1054		}
1055		}
1056	<
1056	>
1057	>	public void checkEmpty(BlockingQueue q) {
1058	>	try {
1059	>	assertTrue(q.isEmpty());
1060	>	assertEquals(0, q.size());
1061	>	assertNull(q.peek());
1062	>	assertNull(q.poll());
1063	>	assertNull(q.poll(0, MILLISECONDS));
1064	>	assertEquals(q.toString(), "[]");
1065	>	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1066	>	assertFalse(q.iterator().hasNext());
1067	>	try {
1068	>	q.element();
1069	>	shouldThrow();
1070	>	} catch (NoSuchElementException success) {}
1071	>	try {
1072	>	q.iterator().next();
1073	>	shouldThrow();
1074	>	} catch (NoSuchElementException success) {}
1075	>	try {
1076	>	q.remove();
1077	>	shouldThrow();
1078	>	} catch (NoSuchElementException success) {}
1079	>	} catch (InterruptedException ie) {
1080	>	threadUnexpectedException(ie);
1081	>	}
1082	>	}
1083	>
1084		}

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