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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.5 by dl, Fri Sep 26 15:33:13 2003 UTC vs.
Revision 1.75 by jsr166, Tue May 3 06:08:49 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,
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 doe not otherwise arrange).  The rules for creating such
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
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 61 | 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 of 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	<	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();
92	–	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	<	* Fail, also setting status to indicate current testcase should fail
313	<	*/
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	<	* If expression not true, set status to indicate current testcase
327	<	* should fail
328	<	*/
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) {
116	<	threadFailed = true;
331	>	try {
332		assertTrue(b);
333	+	} catch (AssertionFailedError t) {
334	+	threadRecordFailure(t);
335	+	throw t;
336		}
337		}
338
339		/**
340	<	* If expression not false, set status to indicate current testcase
341	<	* should fail
342	<	*/
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) {
127	<	threadFailed = true;
345	>	try {
346		assertFalse(b);
347	+	} catch (AssertionFailedError t) {
348	+	threadRecordFailure(t);
349	+	throw t;
350		}
351		}
352
353		/**
354	<	* If argument not null, set status to indicate current testcase
355	<	* should fail
356	<	*/
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) {
138	<	threadFailed = true;
359	>	try {
360		assertNull(x);
361	+	} catch (AssertionFailedError t) {
362	+	threadRecordFailure(t);
363	+	throw t;
364		}
365		}
366
367		/**
368	<	* If arguments not equal, set status to indicate current testcase
369	<	* should fail
370	<	*/
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) {
149	<	threadFailed = true;
373	>	try {
374		assertEquals(x, y);
375	+	} catch (AssertionFailedError t) {
376	+	threadRecordFailure(t);
377	+	throw t;
378		}
379		}
380
381		/**
382	<	* If arguments not equal, set status to indicate current testcase
383	<	* should fail
384	<	*/
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))) {
160	<	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	<	* threadFail with message "should throw exception"
399	<	*/
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;
170	<	fail("should throw exception");
415	>	threadFail("should throw exception");
416		}
417
418		/**
419	<	* threadFail with message "Unexpected exception"
419	>	* Calls threadFail with message "should throw" + exceptionName.
420		*/
421	<	public void threadUnexpectedException() {
422	<	threadFailed = true;
178	<	fail("Unexpected exception");
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	<	* Wait out termination of a thread pool or fail doing so
446	>	* Waits out termination of a thread pool or fails doing so.
447		*/
448		public void joinPool(ExecutorService exec) {
449		try {
450		exec.shutdown();
451	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
452	<	} catch(InterruptedException ie) {
453	<	fail("Unexpected exception");
451	>	assertTrue("ExecutorService did not terminate in a timely manner",
452	>	exec.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS));
453	>	} catch (SecurityException ok) {
454	>	// Allowed in case test doesn't have privs
455	>	} catch (InterruptedException ie) {
456	>	fail("Unexpected InterruptedException");
457		}
458		}
459
460
461		/**
462	<	* fail with message "should throw exception"
463	<	*/
462	>	* Fails with message "should throw exception".
463	>	*/
464		public void shouldThrow() {
465		fail("Should throw exception");
466		}
467
468		/**
469	<	* fail with message "Unexpected exception"
469	>	* Fails with message "should throw " + exceptionName.
470		*/
471	<	public void unexpectedException() {
472	<	fail("Unexpected exception");
471	>	public void shouldThrow(String exceptionName) {
472	>	fail("Should throw " + exceptionName);
473		}
474
209	–
475		/**
476		* The number of elements to place in collections, arrays, etc.
477		*/
478	<	static final int SIZE = 20;
478	>	public static final int SIZE = 20;
479
480		// Some convenient Integer constants
481
482	<	static final Integer zero = new Integer(0);
483	<	static final Integer one = new Integer(1);
484	<	static final Integer two = new Integer(2);
485	<	static final Integer three  = new Integer(3);
486	<	static final Integer four  = new Integer(4);
487	<	static final Integer five  = new Integer(5);
488	<	static final Integer six = new Integer(6);
489	<	static final Integer seven = new Integer(7);
490	<	static final Integer eight = new Integer(8);
491	<	static final Integer nine = new Integer(9);
492	<	static final Integer m1  = new Integer(-1);
493	<	static final Integer m2  = new Integer(-2);
494	<	static final Integer m3  = new Integer(-3);
495	<	static final Integer m4 = new Integer(-4);
496	<	static final Integer m5 = new Integer(-5);
497	<	static final Integer m10 = new Integer(-10);
482	>	public static final Integer zero  = new Integer(0);
483	>	public static final Integer one   = new Integer(1);
484	>	public static final Integer two   = new Integer(2);
485	>	public static final Integer three = new Integer(3);
486	>	public static final Integer four  = new Integer(4);
487	>	public static final Integer five  = new Integer(5);
488	>	public static final Integer six   = new Integer(6);
489	>	public static final Integer seven = new Integer(7);
490	>	public static final Integer eight = new Integer(8);
491	>	public static final Integer nine  = new Integer(9);
492	>	public static final Integer m1  = new Integer(-1);
493	>	public static final Integer m2  = new Integer(-2);
494	>	public static final Integer m3  = new Integer(-3);
495	>	public static final Integer m4  = new Integer(-4);
496	>	public static final Integer m5  = new Integer(-5);
497	>	public static final Integer m6  = new Integer(-6);
498	>	public static final Integer m10 = new Integer(-10);
499
500
501	<	// Some convenient Runnable classes
501	>	/**
502	>	* Runs Runnable r with a security policy that permits precisely
503	>	* the specified permissions.  If there is no current security
504	>	* manager, the runnable is run twice, both with and without a
505	>	* security manager.  We require that any security manager permit
506	>	* getPolicy/setPolicy.
507	>	*/
508	>	public void runWithPermissions(Runnable r, Permission... permissions) {
509	>	SecurityManager sm = System.getSecurityManager();
510	>	if (sm == null) {
511	>	r.run();
512	>	Policy savedPolicy = Policy.getPolicy();
513	>	try {
514	>	Policy.setPolicy(permissivePolicy());
515	>	System.setSecurityManager(new SecurityManager());
516	>	runWithPermissions(r, permissions);
517	>	} finally {
518	>	System.setSecurityManager(null);
519	>	Policy.setPolicy(savedPolicy);
520	>	}
521	>	} else {
522	>	Policy savedPolicy = Policy.getPolicy();
523	>	AdjustablePolicy policy = new AdjustablePolicy(permissions);
524	>	Policy.setPolicy(policy);
525
526	<	static class NoOpRunnable implements Runnable {
527	<	public void run() {}
526	>	try {
527	>	r.run();
528	>	} finally {
529	>	policy.addPermission(new SecurityPermission("setPolicy"));
530	>	Policy.setPolicy(savedPolicy);
531	>	}
532	>	}
533		}
534
535	<	static class NoOpCallable implements Callable {
536	<	public Object call() { return Boolean.TRUE; }
535	>	/**
536	>	* Runs a runnable without any permissions.
537	>	*/
538	>	public void runWithoutPermissions(Runnable r) {
539	>	runWithPermissions(r);
540		}
541
542	<	class ShortRunnable implements Runnable {
543	<	public void run() {
544	<	try {
545	<	Thread.sleep(SHORT_DELAY_MS);
542	>	/**
543	>	* A security policy where new permissions can be dynamically added
544	>	* or all cleared.
545	>	*/
546	>	public static class AdjustablePolicy extends java.security.Policy {
547	>	Permissions perms = new Permissions();
548	>	AdjustablePolicy(Permission... permissions) {
549	>	for (Permission permission : permissions)
550	>	perms.add(permission);
551	>	}
552	>	void addPermission(Permission perm) { perms.add(perm); }
553	>	void clearPermissions() { perms = new Permissions(); }
554	>	public PermissionCollection getPermissions(CodeSource cs) {
555	>	return perms;
556	>	}
557	>	public PermissionCollection getPermissions(ProtectionDomain pd) {
558	>	return perms;
559	>	}
560	>	public boolean implies(ProtectionDomain pd, Permission p) {
561	>	return perms.implies(p);
562	>	}
563	>	public void refresh() {}
564	>	}
565	>
566	>	/**
567	>	* Returns a policy containing all the permissions we ever need.
568	>	*/
569	>	public static Policy permissivePolicy() {
570	>	return new AdjustablePolicy
571	>	// Permissions j.u.c. needs directly
572	>	(new RuntimePermission("modifyThread"),
573	>	new RuntimePermission("getClassLoader"),
574	>	new RuntimePermission("setContextClassLoader"),
575	>	// Permissions needed to change permissions!
576	>	new SecurityPermission("getPolicy"),
577	>	new SecurityPermission("setPolicy"),
578	>	new RuntimePermission("setSecurityManager"),
579	>	// Permissions needed by the junit test harness
580	>	new RuntimePermission("accessDeclaredMembers"),
581	>	new PropertyPermission("*", "read"),
582	>	new java.io.FilePermission("<<ALL FILES>>", "read"));
583	>	}
584	>
585	>	/**
586	>	* Sleeps until the given time has elapsed.
587	>	* Throws AssertionFailedError if interrupted.
588	>	*/
589	>	void sleep(long millis) {
590	>	try {
591	>	Thread.sleep(millis);
592	>	} catch (InterruptedException ie) {
593	>	AssertionFailedError afe =
594	>	new AssertionFailedError("Unexpected InterruptedException");
595	>	afe.initCause(ie);
596	>	throw afe;
597	>	}
598	>	}
599	>
600	>	/**
601	>	* Sleeps until the timeout has elapsed, or interrupted.
602	>	* Does <em>NOT</em> throw InterruptedException.
603	>	*/
604	>	void sleepTillInterrupted(long timeoutMillis) {
605	>	try {
606	>	Thread.sleep(timeoutMillis);
607	>	} catch (InterruptedException wakeup) {}
608	>	}
609	>
610	>	/**
611	>	* Waits up to the specified number of milliseconds for the given
612	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
613	>	*/
614	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
615	>	long timeoutNanos = timeoutMillis * 1000L * 1000L;
616	>	long t0 = System.nanoTime();
617	>	for (;;) {
618	>	Thread.State s = thread.getState();
619	>	if (s == Thread.State.BLOCKED ||
620	>	s == Thread.State.WAITING ||
621	>	s == Thread.State.TIMED_WAITING)
622	>	return;
623	>	else if (s == Thread.State.TERMINATED)
624	>	fail("Unexpected thread termination");
625	>	else if (System.nanoTime() - t0 > timeoutNanos) {
626	>	threadAssertTrue(thread.isAlive());
627	>	return;
628		}
629	<	catch(Exception e) {
630	<	threadUnexpectedException();
629	>	Thread.yield();
630	>	}
631	>	}
632	>
633	>	/**
634	>	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
635	>	* state: BLOCKED, WAITING, or TIMED_WAITING.
636	>	*/
637	>	void waitForThreadToEnterWaitState(Thread thread) {
638	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
639	>	}
640	>
641	>	/**
642	>	* Returns the number of milliseconds since time given by
643	>	* startNanoTime, which must have been previously returned from a
644	>	* call to {@link System.nanoTime()}.
645	>	*/
646	>	long millisElapsedSince(long startNanoTime) {
647	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
648	>	}
649	>
650	>	/**
651	>	* Returns a new started daemon Thread running the given runnable.
652	>	*/
653	>	Thread newStartedThread(Runnable runnable) {
654	>	Thread t = new Thread(runnable);
655	>	t.setDaemon(true);
656	>	t.start();
657	>	return t;
658	>	}
659	>
660	>	/**
661	>	* Waits for the specified time (in milliseconds) for the thread
662	>	* to terminate (using {@link Thread#join(long)}), else interrupts
663	>	* the thread (in the hope that it may terminate later) and fails.
664	>	*/
665	>	void awaitTermination(Thread t, long timeoutMillis) {
666	>	try {
667	>	t.join(timeoutMillis);
668	>	} catch (InterruptedException ie) {
669	>	threadUnexpectedException(ie);
670	>	} finally {
671	>	if (t.isAlive()) {
672	>	t.interrupt();
673	>	fail("Test timed out");
674		}
675		}
676		}
677
678	<	class ShortInterruptedRunnable implements Runnable {
679	<	public void run() {
678	>	/**
679	>	* Waits for LONG_DELAY_MS milliseconds for the thread to
680	>	* terminate (using {@link Thread#join(long)}), else interrupts
681	>	* the thread (in the hope that it may terminate later) and fails.
682	>	*/
683	>	void awaitTermination(Thread t) {
684	>	awaitTermination(t, LONG_DELAY_MS);
685	>	}
686	>
687	>	// Some convenient Runnable classes
688	>
689	>	public abstract class CheckedRunnable implements Runnable {
690	>	protected abstract void realRun() throws Throwable;
691	>
692	>	public final void run() {
693		try {
694	<	Thread.sleep(SHORT_DELAY_MS);
695	<	threadShouldThrow();
696	<	}
262	<	catch(InterruptedException success) {
694	>	realRun();
695	>	} catch (Throwable t) {
696	>	threadUnexpectedException(t);
697		}
698		}
699		}
700
701	<	class SmallRunnable implements Runnable {
702	<	public void run() {
701	>	public abstract class RunnableShouldThrow implements Runnable {
702	>	protected abstract void realRun() throws Throwable;
703	>
704	>	final Class<?> exceptionClass;
705	>
706	>	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
707	>	this.exceptionClass = exceptionClass;
708	>	}
709	>
710	>	public final void run() {
711		try {
712	<	Thread.sleep(SMALL_DELAY_MS);
713	<	}
714	<	catch(Exception e) {
715	<	threadUnexpectedException();
712	>	realRun();
713	>	threadShouldThrow(exceptionClass.getSimpleName());
714	>	} catch (Throwable t) {
715	>	if (! exceptionClass.isInstance(t))
716	>	threadUnexpectedException(t);
717		}
718		}
719		}
720
721	<	class SmallCallable implements Callable {
722	<	public Object call() {
721	>	public abstract class ThreadShouldThrow extends Thread {
722	>	protected abstract void realRun() throws Throwable;
723	>
724	>	final Class<?> exceptionClass;
725	>
726	>	<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) {
727	>	this.exceptionClass = exceptionClass;
728	>	}
729	>
730	>	public final void run() {
731		try {
732	<	Thread.sleep(SMALL_DELAY_MS);
733	<	}
734	<	catch(Exception e) {
735	<	threadUnexpectedException();
732	>	realRun();
733	>	threadShouldThrow(exceptionClass.getSimpleName());
734	>	} catch (Throwable t) {
735	>	if (! exceptionClass.isInstance(t))
736	>	threadUnexpectedException(t);
737		}
286	–	return Boolean.TRUE;
738		}
739		}
740
741	<	class SmallInterruptedRunnable implements Runnable {
742	<	public void run() {
741	>	public abstract class CheckedInterruptedRunnable implements Runnable {
742	>	protected abstract void realRun() throws Throwable;
743	>
744	>	public final void run() {
745		try {
746	<	Thread.sleep(SMALL_DELAY_MS);
747	<	threadShouldThrow();
748	<	}
749	<	catch(InterruptedException success) {
746	>	realRun();
747	>	threadShouldThrow("InterruptedException");
748	>	} catch (InterruptedException success) {
749	>	} catch (Throwable t) {
750	>	threadUnexpectedException(t);
751		}
752		}
753		}
754
755	+	public abstract class CheckedCallable<T> implements Callable<T> {
756	+	protected abstract T realCall() throws Throwable;
757
758	<	class MediumRunnable implements Runnable {
303	<	public void run() {
758	>	public final T call() {
759		try {
760	<	Thread.sleep(MEDIUM_DELAY_MS);
761	<	}
762	<	catch(Exception e) {
763	<	threadUnexpectedException();
760	>	return realCall();
761	>	} catch (Throwable t) {
762	>	threadUnexpectedException(t);
763	>	return null;
764		}
765		}
766		}
767
768	<	class MediumInterruptedRunnable implements Runnable {
769	<	public void run() {
768	>	public abstract class CheckedInterruptedCallable<T>
769	>	implements Callable<T> {
770	>	protected abstract T realCall() throws Throwable;
771	>
772	>	public final T call() {
773		try {
774	<	Thread.sleep(MEDIUM_DELAY_MS);
775	<	threadShouldThrow();
776	<	}
777	<	catch(InterruptedException success) {
774	>	T result = realCall();
775	>	threadShouldThrow("InterruptedException");
776	>	return result;
777	>	} catch (InterruptedException success) {
778	>	} catch (Throwable t) {
779	>	threadUnexpectedException(t);
780		}
781	+	return null;
782		}
783		}
784
785	<	class MediumPossiblyInterruptedRunnable implements Runnable {
786	<	public void run() {
785	>	public static class NoOpRunnable implements Runnable {
786	>	public void run() {}
787	>	}
788	>
789	>	public static class NoOpCallable implements Callable {
790	>	public Object call() { return Boolean.TRUE; }
791	>	}
792	>
793	>	public static final String TEST_STRING = "a test string";
794	>
795	>	public static class StringTask implements Callable<String> {
796	>	public String call() { return TEST_STRING; }
797	>	}
798	>
799	>	public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
800	>	return new CheckedCallable<String>() {
801	>	protected String realCall() {
802	>	try {
803	>	latch.await();
804	>	} catch (InterruptedException quittingTime) {}
805	>	return TEST_STRING;
806	>	}};
807	>	}
808	>
809	>	public Runnable awaiter(final CountDownLatch latch) {
810	>	return new CheckedRunnable() {
811	>	public void realRun() throws InterruptedException {
812	>	latch.await();
813	>	}};
814	>	}
815	>
816	>	public static class NPETask implements Callable<String> {
817	>	public String call() { throw new NullPointerException(); }
818	>	}
819	>
820	>	public static class CallableOne implements Callable<Integer> {
821	>	public Integer call() { return one; }
822	>	}
823	>
824	>	public class ShortRunnable extends CheckedRunnable {
825	>	protected void realRun() throws Throwable {
826	>	Thread.sleep(SHORT_DELAY_MS);
827	>	}
828	>	}
829	>
830	>	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
831	>	protected void realRun() throws InterruptedException {
832	>	Thread.sleep(SHORT_DELAY_MS);
833	>	}
834	>	}
835	>
836	>	public class SmallRunnable extends CheckedRunnable {
837	>	protected void realRun() throws Throwable {
838	>	Thread.sleep(SMALL_DELAY_MS);
839	>	}
840	>	}
841	>
842	>	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
843	>	protected void realRun() {
844	>	try {
845	>	Thread.sleep(SMALL_DELAY_MS);
846	>	} catch (InterruptedException ok) {}
847	>	}
848	>	}
849	>
850	>	public class SmallCallable extends CheckedCallable {
851	>	protected Object realCall() throws InterruptedException {
852	>	Thread.sleep(SMALL_DELAY_MS);
853	>	return Boolean.TRUE;
854	>	}
855	>	}
856	>
857	>	public class MediumRunnable extends CheckedRunnable {
858	>	protected void realRun() throws Throwable {
859	>	Thread.sleep(MEDIUM_DELAY_MS);
860	>	}
861	>	}
862	>
863	>	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
864	>	protected void realRun() throws InterruptedException {
865	>	Thread.sleep(MEDIUM_DELAY_MS);
866	>	}
867	>	}
868	>
869	>	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
870	>	return new CheckedRunnable() {
871	>	protected void realRun() {
872	>	try {
873	>	Thread.sleep(timeoutMillis);
874	>	} catch (InterruptedException ok) {}
875	>	}};
876	>	}
877	>
878	>	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
879	>	protected void realRun() {
880		try {
881		Thread.sleep(MEDIUM_DELAY_MS);
882	<	}
883	<	catch(InterruptedException success) {
884	<	}
882	>	} catch (InterruptedException ok) {}
883	>	}
884	>	}
885	>
886	>	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
887	>	protected void realRun() {
888	>	try {
889	>	Thread.sleep(LONG_DELAY_MS);
890	>	} catch (InterruptedException ok) {}
891		}
892		}
893
894		/**
895		* For use as ThreadFactory in constructors
896		*/
897	<	static class SimpleThreadFactory implements ThreadFactory{
898	<	public Thread newThread(Runnable r){
897	>	public static class SimpleThreadFactory implements ThreadFactory {
898	>	public Thread newThread(Runnable r) {
899		return new Thread(r);
900	<	}
900	>	}
901	>	}
902	>
903	>	public interface TrackedRunnable extends Runnable {
904	>	boolean isDone();
905	>	}
906	>
907	>	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
908	>	return new TrackedRunnable() {
909	>	private volatile boolean done = false;
910	>	public boolean isDone() { return done; }
911	>	public void run() {
912	>	try {
913	>	Thread.sleep(timeoutMillis);
914	>	done = true;
915	>	} catch (InterruptedException ok) {}
916	>	}
917	>	};
918	>	}
919	>
920	>	public static class TrackedShortRunnable implements Runnable {
921	>	public volatile boolean done = false;
922	>	public void run() {
923	>	try {
924	>	Thread.sleep(SHORT_DELAY_MS);
925	>	done = true;
926	>	} catch (InterruptedException ok) {}
927	>	}
928		}
929
930	<	static class TrackedRunnable implements Runnable {
931	<	volatile boolean done = false;
930	>	public static class TrackedSmallRunnable implements Runnable {
931	>	public volatile boolean done = false;
932		public void run() {
933		try {
934		Thread.sleep(SMALL_DELAY_MS);
935		done = true;
936	<	} catch(Exception e){
937	<	}
936	>	} catch (InterruptedException ok) {}
937	>	}
938	>	}
939	>
940	>	public static class TrackedMediumRunnable implements Runnable {
941	>	public volatile boolean done = false;
942	>	public void run() {
943	>	try {
944	>	Thread.sleep(MEDIUM_DELAY_MS);
945	>	done = true;
946	>	} catch (InterruptedException ok) {}
947	>	}
948	>	}
949	>
950	>	public static class TrackedLongRunnable implements Runnable {
951	>	public volatile boolean done = false;
952	>	public void run() {
953	>	try {
954	>	Thread.sleep(LONG_DELAY_MS);
955	>	done = true;
956	>	} catch (InterruptedException ok) {}
957	>	}
958	>	}
959	>
960	>	public static class TrackedNoOpRunnable implements Runnable {
961	>	public volatile boolean done = false;
962	>	public void run() {
963	>	done = true;
964		}
965		}
966
967	<	static class TrackedCallable implements Callable {
968	<	volatile boolean done = false;
967	>	public static class TrackedCallable implements Callable {
968	>	public volatile boolean done = false;
969		public Object call() {
970		try {
971		Thread.sleep(SMALL_DELAY_MS);
972		done = true;
973	<	} catch(Exception e){
361	<	}
973	>	} catch (InterruptedException ok) {}
974		return Boolean.TRUE;
975		}
976		}
977
978		/**
979	+	* Analog of CheckedRunnable for RecursiveAction
980	+	*/
981	+	public abstract class CheckedRecursiveAction extends RecursiveAction {
982	+	protected abstract void realCompute() throws Throwable;
983	+
984	+	public final void compute() {
985	+	try {
986	+	realCompute();
987	+	} catch (Throwable t) {
988	+	threadUnexpectedException(t);
989	+	}
990	+	}
991	+	}
992	+
993	+	/**
994	+	* Analog of CheckedCallable for RecursiveTask
995	+	*/
996	+	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
997	+	protected abstract T realCompute() throws Throwable;
998	+
999	+	public final T compute() {
1000	+	try {
1001	+	return realCompute();
1002	+	} catch (Throwable t) {
1003	+	threadUnexpectedException(t);
1004	+	return null;
1005	+	}
1006	+	}
1007	+	}
1008	+
1009	+	/**
1010		* For use as RejectedExecutionHandler in constructors
1011		*/
1012	<	static class NoOpREHandler implements RejectedExecutionHandler{
1013	<	public void rejectedExecution(Runnable r, ThreadPoolExecutor executor){}
1012	>	public static class NoOpREHandler implements RejectedExecutionHandler {
1013	>	public void rejectedExecution(Runnable r,
1014	>	ThreadPoolExecutor executor) {}
1015	>	}
1016	>
1017	>	/**
1018	>	* A CyclicBarrier that fails with AssertionFailedErrors instead
1019	>	* of throwing checked exceptions.
1020	>	*/
1021	>	public class CheckedBarrier extends CyclicBarrier {
1022	>	public CheckedBarrier(int parties) { super(parties); }
1023	>
1024	>	public int await() {
1025	>	try {
1026	>	return super.await();
1027	>	} catch (Exception e) {
1028	>	AssertionFailedError afe =
1029	>	new AssertionFailedError("Unexpected exception: " + e);
1030	>	afe.initCause(e);
1031	>	throw afe;
1032	>	}
1033	>	}
1034		}
1035	<
1036	<
1035	>
1036	>	public void checkEmpty(BlockingQueue q) {
1037	>	try {
1038	>	assertTrue(q.isEmpty());
1039	>	assertEquals(0, q.size());
1040	>	assertNull(q.peek());
1041	>	assertNull(q.poll());
1042	>	assertNull(q.poll(0, MILLISECONDS));
1043	>	assertEquals(q.toString(), "[]");
1044	>	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1045	>	assertFalse(q.iterator().hasNext());
1046	>	try {
1047	>	q.element();
1048	>	shouldThrow();
1049	>	} catch (NoSuchElementException success) {}
1050	>	try {
1051	>	q.iterator().next();
1052	>	shouldThrow();
1053	>	} catch (NoSuchElementException success) {}
1054	>	try {
1055	>	q.remove();
1056	>	shouldThrow();
1057	>	} catch (NoSuchElementException success) {}
1058	>	} catch (InterruptedException ie) {
1059	>	threadUnexpectedException(ie);
1060	>	}
1061	>	}
1062	>
1063		}

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