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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.14 by dl, Sun Dec 28 21:56:18 2003 UTC vs.
Revision 1.65 by jsr166, Thu Oct 21 23:22:49 2010 UTC

#	Line 2 | Line 2
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.
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	<	import java.security.*;
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,
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 doe not otherwise arrange).  The rules for creating such
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 <tt>
46	<	* SHORT_DELAY_MS</tt>, <tt> SMALL_DELAY_MS</tt>, <tt> MEDIUM_DELAY_MS</tt>,
47	<	* <tt> LONG_DELAY_MS</tt>. The idea here is that a SHORT is always
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 <tt> joinPool</tt> 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>
#	Line 63 | Line 70 | import java.security.*;
70		* "normal" behaviors differ significantly. And sometimes testcases
71		* cover multiple methods when they cannot be tested in
72		* isolation.</li>
73	<	*
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
#	Line 80 | Line 87 | import java.security.*;
87		* any particular package to simplify things for people integrating
88		* them in TCK test suites.</li>
89		*
90	<	* <li> As a convenience, the <tt>main</tt> of this class (JSR166TestCase)
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	+	protected static final boolean expensiveTests =
100	+	Boolean.getBoolean("jsr166.expensiveTests");
101	+
102		/**
103	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
104	<	*/
105	<	public static void main (String[] args) {
106	<	junit.textui.TestRunner.run (suite());
103	>	* If true, report on stdout all "slow" tests, that is, ones that
104	>	* take more than profileThreshold milliseconds to execute.
105	>	*/
106	>	private static final boolean profileTests =
107	>	Boolean.getBoolean("jsr166.profileTests");
108	>
109	>	/**
110	>	* The number of milliseconds that tests are permitted for
111	>	* execution without being reported, when profileTests is set.
112	>	*/
113	>	private static final long profileThreshold =
114	>	Long.getLong("jsr166.profileThreshold", 100);
115	>
116	>	protected void runTest() throws Throwable {
117	>	if (profileTests)
118	>	runTestProfiled();
119	>	else
120	>	super.runTest();
121	>	}
122	>
123	>	protected void runTestProfiled() throws Throwable {
124	>	long t0 = System.nanoTime();
125	>	try {
126	>	super.runTest();
127	>	} finally {
128	>	long elapsedMillis =
129	>	(System.nanoTime() - t0) / (1000L * 1000L);
130	>	if (elapsedMillis >= profileThreshold)
131	>	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
132	>	}
133		}
134
135		/**
136	<	* Collects all JSR166 unit tests as one suite
137	<	*/
138	<	public static Test suite ( ) {
139	<	TestSuite suite = new TestSuite("JSR166 Unit Tests");
140	<
141	<	suite.addTest(new TestSuite(AbstractExecutorServiceTest.class));
142	<	suite.addTest(new TestSuite(AbstractQueuedSynchronizerTest.class));
143	<	suite.addTest(new TestSuite(ArrayBlockingQueueTest.class));
144	<	suite.addTest(new TestSuite(AtomicBooleanTest.class));
145	<	suite.addTest(new TestSuite(AtomicIntegerArrayTest.class));
146	<	suite.addTest(new TestSuite(AtomicIntegerFieldUpdaterTest.class));
147	<	suite.addTest(new TestSuite(AtomicIntegerTest.class));
148	<	suite.addTest(new TestSuite(AtomicLongArrayTest.class));
149	<	suite.addTest(new TestSuite(AtomicLongFieldUpdaterTest.class));
150	<	suite.addTest(new TestSuite(AtomicLongTest.class));
151	<	suite.addTest(new TestSuite(AtomicMarkableReferenceTest.class));
152	<	suite.addTest(new TestSuite(AtomicReferenceArrayTest.class));
153	<	suite.addTest(new TestSuite(AtomicReferenceFieldUpdaterTest.class));
154	<	suite.addTest(new TestSuite(AtomicReferenceTest.class));
155	<	suite.addTest(new TestSuite(AtomicStampedReferenceTest.class));
156	<	suite.addTest(new TestSuite(ConcurrentHashMapTest.class));
157	<	suite.addTest(new TestSuite(ConcurrentLinkedQueueTest.class));
158	<	suite.addTest(new TestSuite(CopyOnWriteArrayListTest.class));
159	<	suite.addTest(new TestSuite(CopyOnWriteArraySetTest.class));
160	<	suite.addTest(new TestSuite(CountDownLatchTest.class));
161	<	suite.addTest(new TestSuite(CyclicBarrierTest.class));
162	<	suite.addTest(new TestSuite(DelayQueueTest.class));
163	<	suite.addTest(new TestSuite(ExchangerTest.class));
164	<	suite.addTest(new TestSuite(ExecutorsTest.class));
126	<	suite.addTest(new TestSuite(ExecutorCompletionServiceTest.class));
127	<	suite.addTest(new TestSuite(FutureTaskTest.class));
128	<	suite.addTest(new TestSuite(LinkedBlockingQueueTest.class));
129	<	suite.addTest(new TestSuite(LinkedListTest.class));
130	<	suite.addTest(new TestSuite(LockSupportTest.class));
131	<	suite.addTest(new TestSuite(PriorityBlockingQueueTest.class));
132	<	suite.addTest(new TestSuite(PriorityQueueTest.class));
133	<	suite.addTest(new TestSuite(ReentrantLockTest.class));
134	<	suite.addTest(new TestSuite(ReentrantReadWriteLockTest.class));
135	<	suite.addTest(new TestSuite(ScheduledExecutorTest.class));
136	<	suite.addTest(new TestSuite(SemaphoreTest.class));
137	<	suite.addTest(new TestSuite(SynchronousQueueTest.class));
138	<	suite.addTest(new TestSuite(SystemTest.class));
139	<	suite.addTest(new TestSuite(ThreadLocalTest.class));
140	<	suite.addTest(new TestSuite(ThreadPoolExecutorTest.class));
141	<	suite.addTest(new TestSuite(ThreadTest.class));
142	<	suite.addTest(new TestSuite(TimeUnitTest.class));
143	<
136	>	* Runs all JSR166 unit tests using junit.textui.TestRunner
137	>	*/
138	>	public static void main(String[] args) {
139	>	if (useSecurityManager) {
140	>	System.err.println("Setting a permissive security manager");
141	>	Policy.setPolicy(permissivePolicy());
142	>	System.setSecurityManager(new SecurityManager());
143	>	}
144	>	int iters = (args.length == 0) ? 1 : Integer.parseInt(args[0]);
145	>
146	>	Test s = suite();
147	>	for (int i = 0; i < iters; ++i) {
148	>	junit.textui.TestRunner.run(s);
149	>	System.gc();
150	>	System.runFinalization();
151	>	}
152	>	System.exit(0);
153	>	}
154	>
155	>	public static TestSuite newTestSuite(Object... suiteOrClasses) {
156	>	TestSuite suite = new TestSuite();
157	>	for (Object suiteOrClass : suiteOrClasses) {
158	>	if (suiteOrClass instanceof TestSuite)
159	>	suite.addTest((TestSuite) suiteOrClass);
160	>	else if (suiteOrClass instanceof Class)
161	>	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
162	>	else
163	>	throw new ClassCastException("not a test suite or class");
164	>	}
165		return suite;
166		}
167
168	+	/**
169	+	* Collects all JSR166 unit tests as one suite.
170	+	*/
171	+	public static Test suite() {
172	+	return newTestSuite(
173	+	ForkJoinPoolTest.suite(),
174	+	ForkJoinTaskTest.suite(),
175	+	RecursiveActionTest.suite(),
176	+	RecursiveTaskTest.suite(),
177	+	LinkedTransferQueueTest.suite(),
178	+	PhaserTest.suite(),
179	+	ThreadLocalRandomTest.suite(),
180	+	AbstractExecutorServiceTest.suite(),
181	+	AbstractQueueTest.suite(),
182	+	AbstractQueuedSynchronizerTest.suite(),
183	+	AbstractQueuedLongSynchronizerTest.suite(),
184	+	ArrayBlockingQueueTest.suite(),
185	+	ArrayDequeTest.suite(),
186	+	AtomicBooleanTest.suite(),
187	+	AtomicIntegerArrayTest.suite(),
188	+	AtomicIntegerFieldUpdaterTest.suite(),
189	+	AtomicIntegerTest.suite(),
190	+	AtomicLongArrayTest.suite(),
191	+	AtomicLongFieldUpdaterTest.suite(),
192	+	AtomicLongTest.suite(),
193	+	AtomicMarkableReferenceTest.suite(),
194	+	AtomicReferenceArrayTest.suite(),
195	+	AtomicReferenceFieldUpdaterTest.suite(),
196	+	AtomicReferenceTest.suite(),
197	+	AtomicStampedReferenceTest.suite(),
198	+	ConcurrentHashMapTest.suite(),
199	+	ConcurrentLinkedDequeTest.suite(),
200	+	ConcurrentLinkedQueueTest.suite(),
201	+	ConcurrentSkipListMapTest.suite(),
202	+	ConcurrentSkipListSubMapTest.suite(),
203	+	ConcurrentSkipListSetTest.suite(),
204	+	ConcurrentSkipListSubSetTest.suite(),
205	+	CopyOnWriteArrayListTest.suite(),
206	+	CopyOnWriteArraySetTest.suite(),
207	+	CountDownLatchTest.suite(),
208	+	CyclicBarrierTest.suite(),
209	+	DelayQueueTest.suite(),
210	+	EntryTest.suite(),
211	+	ExchangerTest.suite(),
212	+	ExecutorsTest.suite(),
213	+	ExecutorCompletionServiceTest.suite(),
214	+	FutureTaskTest.suite(),
215	+	LinkedBlockingDequeTest.suite(),
216	+	LinkedBlockingQueueTest.suite(),
217	+	LinkedListTest.suite(),
218	+	LockSupportTest.suite(),
219	+	PriorityBlockingQueueTest.suite(),
220	+	PriorityQueueTest.suite(),
221	+	ReentrantLockTest.suite(),
222	+	ReentrantReadWriteLockTest.suite(),
223	+	ScheduledExecutorTest.suite(),
224	+	ScheduledExecutorSubclassTest.suite(),
225	+	SemaphoreTest.suite(),
226	+	SynchronousQueueTest.suite(),
227	+	SystemTest.suite(),
228	+	ThreadLocalTest.suite(),
229	+	ThreadPoolExecutorTest.suite(),
230	+	ThreadPoolExecutorSubclassTest.suite(),
231	+	ThreadTest.suite(),
232	+	TimeUnitTest.suite(),
233	+	TreeMapTest.suite(),
234	+	TreeSetTest.suite(),
235	+	TreeSubMapTest.suite(),
236	+	TreeSubSetTest.suite());
237	+	}
238	+
239
240		public static long SHORT_DELAY_MS;
241		public static long SMALL_DELAY_MS;
#	Line 152 | Line 244 | public class JSR166TestCase extends Test
244
245
246		/**
247	<	* Return the shortest timed delay. This could
248	<	* be reimplmented to use for example a Property.
249	<	*/
247	>	* Returns the shortest timed delay. This could
248	>	* be reimplemented to use for example a Property.
249	>	*/
250		protected long getShortDelay() {
251	<	return 100;
251	>	return 50;
252		}
253
254
255		/**
256	<	* Set delays as multiples of SHORT_DELAY.
256	>	* Sets delays as multiples of SHORT_DELAY.
257		*/
258	<	protected  void setDelays() {
258	>	protected void setDelays() {
259		SHORT_DELAY_MS = getShortDelay();
260	<	SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
260	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
261		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
262	<	LONG_DELAY_MS = SHORT_DELAY_MS * 50;
262	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 50;
263		}
264
265		/**
266	<	* Flag set true if any threadAssert methods fail
266	>	* The first exception encountered if any threadAssertXXX method fails.
267		*/
268	<	volatile boolean threadFailed;
268	>	private final AtomicReference<Throwable> threadFailure
269	>	= new AtomicReference<Throwable>(null);
270
271		/**
272	<	* Initialize test to indicate that no thread assertions have failed
272	>	* Records an exception so that it can be rethrown later in the test
273	>	* harness thread, triggering a test case failure.  Only the first
274	>	* failure is recorded; subsequent calls to this method from within
275	>	* the same test have no effect.
276		*/
277	<	public void setUp() {
277	>	public void threadRecordFailure(Throwable t) {
278	>	threadFailure.compareAndSet(null, t);
279	>	}
280	>
281	>	public void setUp() {
282		setDelays();
183	–	threadFailed = false;
283		}
284
285		/**
286	<	* Trigger test case failure if any thread assertions have failed
287	<	*/
288	<	public void tearDown() {
289	<	assertFalse(threadFailed);
286	>	* Triggers test case failure if any thread assertions have failed,
287	>	* by rethrowing, in the test harness thread, any exception recorded
288	>	* earlier by threadRecordFailure.
289	>	*/
290	>	public void tearDown() throws Exception {
291	>	Throwable t = threadFailure.get();
292	>	if (t != null) {
293	>	if (t instanceof Error)
294	>	throw (Error) t;
295	>	else if (t instanceof RuntimeException)
296	>	throw (RuntimeException) t;
297	>	else if (t instanceof Exception)
298	>	throw (Exception) t;
299	>	else {
300	>	AssertionFailedError afe =
301	>	new AssertionFailedError(t.toString());
302	>	afe.initCause(t);
303	>	throw afe;
304	>	}
305	>	}
306		}
307
308		/**
309	<	* Fail, also setting status to indicate current testcase should fail
310	<	*/
309	>	* Just like fail(reason), but additionally recording (using
310	>	* threadRecordFailure) any AssertionFailedError thrown, so that
311	>	* the current testcase will fail.
312	>	*/
313		public void threadFail(String reason) {
314	<	threadFailed = true;
315	<	fail(reason);
314	>	try {
315	>	fail(reason);
316	>	} catch (AssertionFailedError t) {
317	>	threadRecordFailure(t);
318	>	fail(reason);
319	>	}
320		}
321
322		/**
323	<	* If expression not true, set status to indicate current testcase
324	<	* should fail
325	<	*/
323	>	* Just like assertTrue(b), but additionally recording (using
324	>	* threadRecordFailure) any AssertionFailedError thrown, so that
325	>	* the current testcase will fail.
326	>	*/
327		public void threadAssertTrue(boolean b) {
328	<	if (!b) {
207	<	threadFailed = true;
328	>	try {
329		assertTrue(b);
330	+	} catch (AssertionFailedError t) {
331	+	threadRecordFailure(t);
332	+	throw t;
333		}
334		}
335
336		/**
337	<	* If expression not false, set status to indicate current testcase
338	<	* should fail
339	<	*/
337	>	* Just like assertFalse(b), but additionally recording (using
338	>	* threadRecordFailure) any AssertionFailedError thrown, so that
339	>	* the current testcase will fail.
340	>	*/
341		public void threadAssertFalse(boolean b) {
342	<	if (b) {
218	<	threadFailed = true;
342	>	try {
343		assertFalse(b);
344	+	} catch (AssertionFailedError t) {
345	+	threadRecordFailure(t);
346	+	throw t;
347		}
348		}
349
350		/**
351	<	* If argument not null, set status to indicate current testcase
352	<	* should fail
353	<	*/
351	>	* Just like assertNull(x), but additionally recording (using
352	>	* threadRecordFailure) any AssertionFailedError thrown, so that
353	>	* the current testcase will fail.
354	>	*/
355		public void threadAssertNull(Object x) {
356	<	if (x != null) {
229	<	threadFailed = true;
356	>	try {
357		assertNull(x);
358	+	} catch (AssertionFailedError t) {
359	+	threadRecordFailure(t);
360	+	throw t;
361		}
362		}
363
364		/**
365	<	* If arguments not equal, set status to indicate current testcase
366	<	* should fail
367	<	*/
365	>	* Just like assertEquals(x, y), but additionally recording (using
366	>	* threadRecordFailure) any AssertionFailedError thrown, so that
367	>	* the current testcase will fail.
368	>	*/
369		public void threadAssertEquals(long x, long y) {
370	<	if (x != y) {
240	<	threadFailed = true;
370	>	try {
371		assertEquals(x, y);
372	+	} catch (AssertionFailedError t) {
373	+	threadRecordFailure(t);
374	+	throw t;
375		}
376		}
377
378		/**
379	<	* If arguments not equal, set status to indicate current testcase
380	<	* should fail
381	<	*/
379	>	* Just like assertEquals(x, y), but additionally recording (using
380	>	* threadRecordFailure) any AssertionFailedError thrown, so that
381	>	* the current testcase will fail.
382	>	*/
383		public void threadAssertEquals(Object x, Object y) {
384	<	if (x != y && (x == null || !x.equals(y))) {
251	<	threadFailed = true;
384	>	try {
385		assertEquals(x, y);
386	+	} catch (AssertionFailedError t) {
387	+	threadRecordFailure(t);
388	+	throw t;
389	+	} catch (Throwable t) {
390	+	threadUnexpectedException(t);
391		}
392		}
393
394		/**
395	<	* threadFail with message "should throw exception"
396	<	*/
395	>	* Just like assertSame(x, y), but additionally recording (using
396	>	* threadRecordFailure) any AssertionFailedError thrown, so that
397	>	* the current testcase will fail.
398	>	*/
399	>	public void threadAssertSame(Object x, Object y) {
400	>	try {
401	>	assertSame(x, y);
402	>	} catch (AssertionFailedError t) {
403	>	threadRecordFailure(t);
404	>	throw t;
405	>	}
406	>	}
407	>
408	>	/**
409	>	* Calls threadFail with message "should throw exception".
410	>	*/
411		public void threadShouldThrow() {
412	<	threadFailed = true;
261	<	fail("should throw exception");
412	>	threadFail("should throw exception");
413		}
414
415		/**
416	<	* threadFail with message "Unexpected exception"
416	>	* Calls threadFail with message "should throw" + exceptionName.
417		*/
418	<	public void threadUnexpectedException() {
419	<	threadFailed = true;
269	<	fail("Unexpected exception");
418	>	public void threadShouldThrow(String exceptionName) {
419	>	threadFail("should throw " + exceptionName);
420		}
421
422	+	/**
423	+	* Records the given exception using {@link #threadRecordFailure},
424	+	* then rethrows the exception, wrapping it in an
425	+	* AssertionFailedError if necessary.
426	+	*/
427	+	public void threadUnexpectedException(Throwable t) {
428	+	threadRecordFailure(t);
429	+	t.printStackTrace();
430	+	if (t instanceof RuntimeException)
431	+	throw (RuntimeException) t;
432	+	else if (t instanceof Error)
433	+	throw (Error) t;
434	+	else {
435	+	AssertionFailedError afe =
436	+	new AssertionFailedError("unexpected exception: " + t);
437	+	t.initCause(t);
438	+	throw afe;
439	+	}
440	+	}
441
442		/**
443	<	* Wait out termination of a thread pool or fail doing so
443	>	* Waits out termination of a thread pool or fails doing so.
444		*/
445		public void joinPool(ExecutorService exec) {
446		try {
447		exec.shutdown();
448	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
449	<	} catch(InterruptedException ie) {
450	<	fail("Unexpected exception");
448	>	assertTrue("ExecutorService did not terminate in a timely manner",
449	>	exec.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
450	>	} catch (SecurityException ok) {
451	>	// Allowed in case test doesn't have privs
452	>	} catch (InterruptedException ie) {
453	>	fail("Unexpected InterruptedException");
454		}
455		}
456
457
458		/**
459	<	* fail with message "should throw exception"
460	<	*/
459	>	* Fails with message "should throw exception".
460	>	*/
461		public void shouldThrow() {
462		fail("Should throw exception");
463		}
464
465		/**
466	<	* fail with message "Unexpected exception"
466	>	* Fails with message "should throw " + exceptionName.
467		*/
468	<	public void unexpectedException() {
469	<	fail("Unexpected exception");
468	>	public void shouldThrow(String exceptionName) {
469	>	fail("Should throw " + exceptionName);
470		}
471
300	–
472		/**
473		* The number of elements to place in collections, arrays, etc.
474		*/
475	<	static final int SIZE = 20;
475	>	public static final int SIZE = 20;
476
477		// Some convenient Integer constants
478
479	<	static final Integer zero = new Integer(0);
480	<	static final Integer one = new Integer(1);
481	<	static final Integer two = new Integer(2);
482	<	static final Integer three  = new Integer(3);
483	<	static final Integer four  = new Integer(4);
484	<	static final Integer five  = new Integer(5);
485	<	static final Integer six = new Integer(6);
486	<	static final Integer seven = new Integer(7);
487	<	static final Integer eight = new Integer(8);
488	<	static final Integer nine = new Integer(9);
489	<	static final Integer m1  = new Integer(-1);
490	<	static final Integer m2  = new Integer(-2);
491	<	static final Integer m3  = new Integer(-3);
492	<	static final Integer m4 = new Integer(-4);
493	<	static final Integer m5 = new Integer(-5);
494	<	static final Integer m10 = new Integer(-10);
479	>	public static final Integer zero  = new Integer(0);
480	>	public static final Integer one   = new Integer(1);
481	>	public static final Integer two   = new Integer(2);
482	>	public static final Integer three = new Integer(3);
483	>	public static final Integer four  = new Integer(4);
484	>	public static final Integer five  = new Integer(5);
485	>	public static final Integer six   = new Integer(6);
486	>	public static final Integer seven = new Integer(7);
487	>	public static final Integer eight = new Integer(8);
488	>	public static final Integer nine  = new Integer(9);
489	>	public static final Integer m1  = new Integer(-1);
490	>	public static final Integer m2  = new Integer(-2);
491	>	public static final Integer m3  = new Integer(-3);
492	>	public static final Integer m4  = new Integer(-4);
493	>	public static final Integer m5  = new Integer(-5);
494	>	public static final Integer m6  = new Integer(-6);
495	>	public static final Integer m10 = new Integer(-10);
496
497
498		/**
499	+	* Runs Runnable r with a security policy that permits precisely
500	+	* the specified permissions.  If there is no current security
501	+	* manager, the runnable is run twice, both with and without a
502	+	* security manager.  We require that any security manager permit
503	+	* getPolicy/setPolicy.
504	+	*/
505	+	public void runWithPermissions(Runnable r, Permission... permissions) {
506	+	SecurityManager sm = System.getSecurityManager();
507	+	if (sm == null) {
508	+	r.run();
509	+	Policy savedPolicy = Policy.getPolicy();
510	+	try {
511	+	Policy.setPolicy(permissivePolicy());
512	+	System.setSecurityManager(new SecurityManager());
513	+	runWithPermissions(r, permissions);
514	+	} finally {
515	+	System.setSecurityManager(null);
516	+	Policy.setPolicy(savedPolicy);
517	+	}
518	+	} else {
519	+	Policy savedPolicy = Policy.getPolicy();
520	+	AdjustablePolicy policy = new AdjustablePolicy(permissions);
521	+	Policy.setPolicy(policy);
522	+
523	+	try {
524	+	r.run();
525	+	} finally {
526	+	policy.addPermission(new SecurityPermission("setPolicy"));
527	+	Policy.setPolicy(savedPolicy);
528	+	}
529	+	}
530	+	}
531	+
532	+	/**
533	+	* Runs a runnable without any permissions.
534	+	*/
535	+	public void runWithoutPermissions(Runnable r) {
536	+	runWithPermissions(r);
537	+	}
538	+
539	+	/**
540		* A security policy where new permissions can be dynamically added
541		* or all cleared.
542		*/
543	<	static class AdjustablePolicy extends java.security.Policy {
543	>	public static class AdjustablePolicy extends java.security.Policy {
544		Permissions perms = new Permissions();
545	<	AdjustablePolicy() { }
545	>	AdjustablePolicy(Permission... permissions) {
546	>	for (Permission permission : permissions)
547	>	perms.add(permission);
548	>	}
549		void addPermission(Permission perm) { perms.add(perm); }
550		void clearPermissions() { perms = new Permissions(); }
551	<	public PermissionCollection getPermissions(CodeSource cs) {
552	<	return perms;
553	<	}
554	<	public PermissionCollection getPermissions(ProtectionDomain pd) {
555	<	return perms;
556	<	}
557	<	public boolean implies(ProtectionDomain pd, Permission p) {
558	<	return perms.implies(p);
559	<	}
560	<	public void refresh() {}
551	>	public PermissionCollection getPermissions(CodeSource cs) {
552	>	return perms;
553	>	}
554	>	public PermissionCollection getPermissions(ProtectionDomain pd) {
555	>	return perms;
556	>	}
557	>	public boolean implies(ProtectionDomain pd, Permission p) {
558	>	return perms.implies(p);
559	>	}
560	>	public void refresh() {}
561		}
562
563	<
564	<	// Some convenient Runnable classes
565	<
566	<	static class NoOpRunnable implements Runnable {
567	<	public void run() {}
563	>	/**
564	>	* Returns a policy containing all the permissions we ever need.
565	>	*/
566	>	public static Policy permissivePolicy() {
567	>	return new AdjustablePolicy
568	>	// Permissions j.u.c. needs directly
569	>	(new RuntimePermission("modifyThread"),
570	>	new RuntimePermission("getClassLoader"),
571	>	new RuntimePermission("setContextClassLoader"),
572	>	// Permissions needed to change permissions!
573	>	new SecurityPermission("getPolicy"),
574	>	new SecurityPermission("setPolicy"),
575	>	new RuntimePermission("setSecurityManager"),
576	>	// Permissions needed by the junit test harness
577	>	new RuntimePermission("accessDeclaredMembers"),
578	>	new PropertyPermission("*", "read"),
579	>	new java.io.FilePermission("<<ALL FILES>>", "read"));
580		}
581
582	<	static class NoOpCallable implements Callable {
583	<	public Object call() { return Boolean.TRUE; }
582	>	/**
583	>	* Sleeps until the given time has elapsed.
584	>	* Throws AssertionFailedError if interrupted.
585	>	*/
586	>	void sleep(long millis) {
587	>	try {
588	>	Thread.sleep(millis);
589	>	} catch (InterruptedException ie) {
590	>	AssertionFailedError afe =
591	>	new AssertionFailedError("Unexpected InterruptedException");
592	>	afe.initCause(ie);
593	>	throw afe;
594	>	}
595		}
596
597	<	static final String TEST_STRING = "a test string";
598	<
599	<	static class StringTask implements Callable<String> {
600	<	public String call() { return TEST_STRING; }
597	>	/**
598	>	* Sleeps until the timeout has elapsed, or interrupted.
599	>	* Does <em>NOT</em> throw InterruptedException.
600	>	*/
601	>	void sleepTillInterrupted(long timeoutMillis) {
602	>	try {
603	>	Thread.sleep(timeoutMillis);
604	>	} catch (InterruptedException wakeup) {}
605		}
606
607	<	static class NPETask implements Callable<String> {
608	<	public String call() { throw new NullPointerException(); }
607	>	/**
608	>	* Waits up to the specified number of milliseconds for the given
609	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
610	>	*/
611	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
612	>	long timeoutNanos = timeoutMillis * 1000L * 1000L;
613	>	long t0 = System.nanoTime();
614	>	for (;;) {
615	>	Thread.State s = thread.getState();
616	>	if (s == Thread.State.BLOCKED ||
617	>	s == Thread.State.WAITING ||
618	>	s == Thread.State.TIMED_WAITING ||
619	>	System.nanoTime() - t0 > timeoutNanos)
620	>	return;
621	>	Thread.yield();
622	>	}
623		}
624
625	<	static class CallableOne implements Callable<Integer> {
626	<	public Integer call() { return one; }
625	>	/**
626	>	* Returns a new started daemon Thread running the given runnable.
627	>	*/
628	>	Thread newStartedThread(Runnable runnable) {
629	>	Thread t = new Thread(runnable);
630	>	t.setDaemon(true);
631	>	t.start();
632	>	return t;
633		}
634
635	<	class ShortRunnable implements Runnable {
636	<	public void run() {
637	<	try {
638	<	Thread.sleep(SHORT_DELAY_MS);
639	<	}
640	<	catch(Exception e) {
641	<	threadUnexpectedException();
635	>	/**
636	>	* Waits for the specified time (in milliseconds) for the thread
637	>	* to terminate (using {@link Thread#join(long)}), else interrupts
638	>	* the thread (in the hope that it may terminate later) and fails.
639	>	*/
640	>	void awaitTermination(Thread t, long timeoutMillis) {
641	>	try {
642	>	t.join(timeoutMillis);
643	>	} catch (InterruptedException ie) {
644	>	threadUnexpectedException(ie);
645	>	} finally {
646	>	if (t.isAlive()) {
647	>	t.interrupt();
648	>	fail("Test timed out");
649		}
650		}
651		}
652
653	<	class ShortInterruptedRunnable implements Runnable {
654	<	public void run() {
653	>	// Some convenient Runnable classes
654	>
655	>	public abstract class CheckedRunnable implements Runnable {
656	>	protected abstract void realRun() throws Throwable;
657	>
658	>	public final void run() {
659		try {
660	<	Thread.sleep(SHORT_DELAY_MS);
661	<	threadShouldThrow();
662	<	}
389	<	catch(InterruptedException success) {
660	>	realRun();
661	>	} catch (Throwable t) {
662	>	threadUnexpectedException(t);
663		}
664		}
665		}
666
667	<	class SmallRunnable implements Runnable {
668	<	public void run() {
667	>	public abstract class RunnableShouldThrow implements Runnable {
668	>	protected abstract void realRun() throws Throwable;
669	>
670	>	final Class<?> exceptionClass;
671	>
672	>	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
673	>	this.exceptionClass = exceptionClass;
674	>	}
675	>
676	>	public final void run() {
677		try {
678	<	Thread.sleep(SMALL_DELAY_MS);
679	<	}
680	<	catch(Exception e) {
681	<	threadUnexpectedException();
678	>	realRun();
679	>	threadShouldThrow(exceptionClass.getSimpleName());
680	>	} catch (Throwable t) {
681	>	if (! exceptionClass.isInstance(t))
682	>	threadUnexpectedException(t);
683		}
684		}
685		}
686
687	<	class SmallPossiblyInterruptedRunnable implements Runnable {
688	<	public void run() {
687	>	public abstract class ThreadShouldThrow extends Thread {
688	>	protected abstract void realRun() throws Throwable;
689	>
690	>	final Class<?> exceptionClass;
691	>
692	>	<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) {
693	>	this.exceptionClass = exceptionClass;
694	>	}
695	>
696	>	public final void run() {
697		try {
698	<	Thread.sleep(SMALL_DELAY_MS);
699	<	}
700	<	catch(Exception e) {
698	>	realRun();
699	>	threadShouldThrow(exceptionClass.getSimpleName());
700	>	} catch (Throwable t) {
701	>	if (! exceptionClass.isInstance(t))
702	>	threadUnexpectedException(t);
703		}
704		}
705		}
706
707	<	class SmallCallable implements Callable {
708	<	public Object call() {
707	>	public abstract class CheckedInterruptedRunnable implements Runnable {
708	>	protected abstract void realRun() throws Throwable;
709	>
710	>	public final void run() {
711		try {
712	<	Thread.sleep(SMALL_DELAY_MS);
712	>	realRun();
713	>	threadShouldThrow("InterruptedException");
714	>	} catch (InterruptedException success) {
715	>	} catch (Throwable t) {
716	>	threadUnexpectedException(t);
717		}
420	–	catch(Exception e) {
421	–	threadUnexpectedException();
422	–	}
423	–	return Boolean.TRUE;
718		}
719		}
720
721	<	class SmallInterruptedRunnable implements Runnable {
722	<	public void run() {
721	>	public abstract class CheckedCallable<T> implements Callable<T> {
722	>	protected abstract T realCall() throws Throwable;
723	>
724	>	public final T call() {
725		try {
726	<	Thread.sleep(SMALL_DELAY_MS);
727	<	threadShouldThrow();
728	<	}
729	<	catch(InterruptedException success) {
726	>	return realCall();
727	>	} catch (Throwable t) {
728	>	threadUnexpectedException(t);
729	>	return null;
730		}
731		}
732		}
733
734	+	public abstract class CheckedInterruptedCallable<T>
735	+	implements Callable<T> {
736	+	protected abstract T realCall() throws Throwable;
737
738	<	class MediumRunnable implements Runnable {
440	<	public void run() {
738	>	public final T call() {
739		try {
740	<	Thread.sleep(MEDIUM_DELAY_MS);
741	<	}
742	<	catch(Exception e) {
743	<	threadUnexpectedException();
740	>	T result = realCall();
741	>	threadShouldThrow("InterruptedException");
742	>	return result;
743	>	} catch (InterruptedException success) {
744	>	} catch (Throwable t) {
745	>	threadUnexpectedException(t);
746		}
747	+	return null;
748		}
749		}
750
751	<	class MediumInterruptedRunnable implements Runnable {
752	<	public void run() {
751	>	public static class NoOpRunnable implements Runnable {
752	>	public void run() {}
753	>	}
754	>
755	>	public static class NoOpCallable implements Callable {
756	>	public Object call() { return Boolean.TRUE; }
757	>	}
758	>
759	>	public static final String TEST_STRING = "a test string";
760	>
761	>	public static class StringTask implements Callable<String> {
762	>	public String call() { return TEST_STRING; }
763	>	}
764	>
765	>	public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
766	>	return new CheckedCallable<String>() {
767	>	protected String realCall() {
768	>	try {
769	>	latch.await();
770	>	} catch (InterruptedException quittingTime) {}
771	>	return TEST_STRING;
772	>	}};
773	>	}
774	>
775	>	public static class NPETask implements Callable<String> {
776	>	public String call() { throw new NullPointerException(); }
777	>	}
778	>
779	>	public static class CallableOne implements Callable<Integer> {
780	>	public Integer call() { return one; }
781	>	}
782	>
783	>	public class ShortRunnable extends CheckedRunnable {
784	>	protected void realRun() throws Throwable {
785	>	Thread.sleep(SHORT_DELAY_MS);
786	>	}
787	>	}
788	>
789	>	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
790	>	protected void realRun() throws InterruptedException {
791	>	Thread.sleep(SHORT_DELAY_MS);
792	>	}
793	>	}
794	>
795	>	public class SmallRunnable extends CheckedRunnable {
796	>	protected void realRun() throws Throwable {
797	>	Thread.sleep(SMALL_DELAY_MS);
798	>	}
799	>	}
800	>
801	>	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
802	>	protected void realRun() {
803		try {
804	<	Thread.sleep(MEDIUM_DELAY_MS);
805	<	threadShouldThrow();
455	<	}
456	<	catch(InterruptedException success) {
457	<	}
804	>	Thread.sleep(SMALL_DELAY_MS);
805	>	} catch (InterruptedException ok) {}
806		}
807		}
808
809	<	class MediumPossiblyInterruptedRunnable implements Runnable {
810	<	public void run() {
809	>	public class SmallCallable extends CheckedCallable {
810	>	protected Object realCall() throws InterruptedException {
811	>	Thread.sleep(SMALL_DELAY_MS);
812	>	return Boolean.TRUE;
813	>	}
814	>	}
815	>
816	>	public class MediumRunnable extends CheckedRunnable {
817	>	protected void realRun() throws Throwable {
818	>	Thread.sleep(MEDIUM_DELAY_MS);
819	>	}
820	>	}
821	>
822	>	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
823	>	protected void realRun() throws InterruptedException {
824	>	Thread.sleep(MEDIUM_DELAY_MS);
825	>	}
826	>	}
827	>
828	>	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
829	>	return new CheckedRunnable() {
830	>	protected void realRun() {
831	>	try {
832	>	Thread.sleep(timeoutMillis);
833	>	} catch (InterruptedException ok) {}
834	>	}};
835	>	}
836	>
837	>	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
838	>	protected void realRun() {
839		try {
840		Thread.sleep(MEDIUM_DELAY_MS);
841	<	}
466	<	catch(InterruptedException success) {
467	<	}
841	>	} catch (InterruptedException ok) {}
842		}
843		}
844
845	<	class LongPossiblyInterruptedRunnable implements Runnable {
846	<	public void run() {
845	>	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
846	>	protected void realRun() {
847		try {
848		Thread.sleep(LONG_DELAY_MS);
849	<	}
476	<	catch(InterruptedException success) {
477	<	}
849	>	} catch (InterruptedException ok) {}
850		}
851		}
852
853		/**
854		* For use as ThreadFactory in constructors
855		*/
856	<	static class SimpleThreadFactory implements ThreadFactory{
857	<	public Thread newThread(Runnable r){
856	>	public static class SimpleThreadFactory implements ThreadFactory {
857	>	public Thread newThread(Runnable r) {
858		return new Thread(r);
859	<	}
859	>	}
860	>	}
861	>
862	>	public interface TrackedRunnable extends Runnable {
863	>	boolean isDone();
864		}
865
866	<	static class TrackedShortRunnable implements Runnable {
867	<	volatile boolean done = false;
866	>	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
867	>	return new TrackedRunnable() {
868	>	private volatile boolean done = false;
869	>	public boolean isDone() { return done; }
870	>	public void run() {
871	>	try {
872	>	Thread.sleep(timeoutMillis);
873	>	done = true;
874	>	} catch (InterruptedException ok) {}
875	>	}
876	>	};
877	>	}
878	>
879	>	public static class TrackedShortRunnable implements Runnable {
880	>	public volatile boolean done = false;
881	>	public void run() {
882	>	try {
883	>	Thread.sleep(SHORT_DELAY_MS);
884	>	done = true;
885	>	} catch (InterruptedException ok) {}
886	>	}
887	>	}
888	>
889	>	public static class TrackedSmallRunnable implements Runnable {
890	>	public volatile boolean done = false;
891		public void run() {
892		try {
893		Thread.sleep(SMALL_DELAY_MS);
894		done = true;
895	<	} catch(Exception e){
497	<	}
895	>	} catch (InterruptedException ok) {}
896		}
897		}
898
899	<	static class TrackedMediumRunnable implements Runnable {
900	<	volatile boolean done = false;
899	>	public static class TrackedMediumRunnable implements Runnable {
900	>	public volatile boolean done = false;
901		public void run() {
902		try {
903		Thread.sleep(MEDIUM_DELAY_MS);
904		done = true;
905	<	} catch(Exception e){
508	<	}
905	>	} catch (InterruptedException ok) {}
906		}
907		}
908
909	<	static class TrackedLongRunnable implements Runnable {
910	<	volatile boolean done = false;
909	>	public static class TrackedLongRunnable implements Runnable {
910	>	public volatile boolean done = false;
911		public void run() {
912		try {
913		Thread.sleep(LONG_DELAY_MS);
914		done = true;
915	<	} catch(Exception e){
519	<	}
915	>	} catch (InterruptedException ok) {}
916		}
917		}
918
919	<	static class TrackedNoOpRunnable implements Runnable {
920	<	volatile boolean done = false;
919	>	public static class TrackedNoOpRunnable implements Runnable {
920	>	public volatile boolean done = false;
921		public void run() {
922		done = true;
923		}
924		}
925
926	<	static class TrackedCallable implements Callable {
927	<	volatile boolean done = false;
926	>	public static class TrackedCallable implements Callable {
927	>	public volatile boolean done = false;
928		public Object call() {
929		try {
930		Thread.sleep(SMALL_DELAY_MS);
931		done = true;
932	<	} catch(Exception e){
537	<	}
932	>	} catch (InterruptedException ok) {}
933		return Boolean.TRUE;
934		}
935		}
936
937	+	/**
938	+	* Analog of CheckedRunnable for RecursiveAction
939	+	*/
940	+	public abstract class CheckedRecursiveAction extends RecursiveAction {
941	+	protected abstract void realCompute() throws Throwable;
942	+
943	+	public final void compute() {
944	+	try {
945	+	realCompute();
946	+	} catch (Throwable t) {
947	+	threadUnexpectedException(t);
948	+	}
949	+	}
950	+	}
951	+
952	+	/**
953	+	* Analog of CheckedCallable for RecursiveTask
954	+	*/
955	+	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
956	+	protected abstract T realCompute() throws Throwable;
957	+
958	+	public final T compute() {
959	+	try {
960	+	return realCompute();
961	+	} catch (Throwable t) {
962	+	threadUnexpectedException(t);
963	+	return null;
964	+	}
965	+	}
966	+	}
967
968		/**
969		* For use as RejectedExecutionHandler in constructors
970		*/
971	<	static class NoOpREHandler implements RejectedExecutionHandler{
972	<	public void rejectedExecution(Runnable r, ThreadPoolExecutor executor){}
971	>	public static class NoOpREHandler implements RejectedExecutionHandler {
972	>	public void rejectedExecution(Runnable r,
973	>	ThreadPoolExecutor executor) {}
974		}
975	<
976	<
975	>
976	>	/**
977	>	* A CyclicBarrier that fails with AssertionFailedErrors instead
978	>	* of throwing checked exceptions.
979	>	*/
980	>	public class CheckedBarrier extends CyclicBarrier {
981	>	public CheckedBarrier(int parties) { super(parties); }
982	>
983	>	public int await() {
984	>	try {
985	>	return super.await();
986	>	} catch (Exception e) {
987	>	AssertionFailedError afe =
988	>	new AssertionFailedError("Unexpected exception: " + e);
989	>	afe.initCause(e);
990	>	throw afe;
991	>	}
992	>	}
993	>	}
994	>
995		}

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