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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.11 by dl, Tue Dec 23 19:40:24 2003 UTC vs.
Revision 1.61 by jsr166, Mon Oct 11 03:54:10 2010 UTC

#	Line 1 | Line 1
1		/*
2	<	* Written by members of JCP JSR-166 Expert Group and released to the
3	<	* public domain. Use, modify, and redistribute this code in any way
4	<	* without acknowledgement. Other contributors include Andrew Wright,
5	<	* Jeffrey Hayes, Pat Fischer, Mike Judd.
2	>	* Written by Doug Lea with assistance from members of JCP JSR-166
3	>	* Expert Group and released to the public domain, as explained at
4	>	* http://creativecommons.org/licenses/publicdomain
5	>	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	>	* Pat Fisher, Mike Judd.
7		*/
8
9		import junit.framework.*;
10	<	import java.util.*;
10	>	import java.util.PropertyPermission;
11		import java.util.concurrent.*;
12	<	import java.io.*;
13	<	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 62 | 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 79 | 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		/**
100	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
101	<	*/
102	<	public static void main (String[] args) {
103	<	junit.textui.TestRunner.run (suite());
100	>	* If true, report on stdout all "slow" tests, that is, ones that
101	>	* take more than profileThreshold milliseconds to execute.
102	>	*/
103	>	private static final boolean profileTests =
104	>	Boolean.getBoolean("jsr166.profileTests");
105	>
106	>	/**
107	>	* The number of milliseconds that tests are permitted for
108	>	* execution without being reported, when profileTests is set.
109	>	*/
110	>	private static final long profileThreshold =
111	>	Long.getLong("jsr166.profileThreshold", 100);
112	>
113	>	protected void runTest() throws Throwable {
114	>	if (profileTests)
115	>	runTestProfiled();
116	>	else
117	>	super.runTest();
118		}
119
120	+	protected void runTestProfiled() throws Throwable {
121	+	long t0 = System.nanoTime();
122	+	try {
123	+	super.runTest();
124	+	} finally {
125	+	long elapsedMillis =
126	+	(System.nanoTime() - t0) / (1000L * 1000L);
127	+	if (elapsedMillis >= profileThreshold)
128	+	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
129	+	}
130	+	}
131	+
132		/**
133	<	* Collects all JSR166 unit tests as one suite
134	<	*/
135	<	public static Test suite ( ) {
136	<	TestSuite suite = new TestSuite("JSR166 Unit Tests");
137	<
138	<	suite.addTest(new TestSuite(AbstractExecutorServiceTest.class));
139	<	suite.addTest(new TestSuite(ArrayBlockingQueueTest.class));
140	<	suite.addTest(new TestSuite(AtomicBooleanTest.class));
141	<	suite.addTest(new TestSuite(AtomicIntegerArrayTest.class));
142	<	suite.addTest(new TestSuite(AtomicIntegerFieldUpdaterTest.class));
143	<	suite.addTest(new TestSuite(AtomicIntegerTest.class));
144	<	suite.addTest(new TestSuite(AtomicLongArrayTest.class));
145	<	suite.addTest(new TestSuite(AtomicLongFieldUpdaterTest.class));
146	<	suite.addTest(new TestSuite(AtomicLongTest.class));
147	<	suite.addTest(new TestSuite(AtomicMarkableReferenceTest.class));
148	<	suite.addTest(new TestSuite(AtomicReferenceArrayTest.class));
149	<	suite.addTest(new TestSuite(AtomicReferenceFieldUpdaterTest.class));
150	<	suite.addTest(new TestSuite(AtomicReferenceTest.class));
151	<	suite.addTest(new TestSuite(AtomicStampedReferenceTest.class));
152	<	suite.addTest(new TestSuite(ConcurrentHashMapTest.class));
153	<	suite.addTest(new TestSuite(ConcurrentLinkedQueueTest.class));
154	<	suite.addTest(new TestSuite(CopyOnWriteArrayListTest.class));
155	<	suite.addTest(new TestSuite(CopyOnWriteArraySetTest.class));
156	<	suite.addTest(new TestSuite(CountDownLatchTest.class));
157	<	suite.addTest(new TestSuite(CyclicBarrierTest.class));
158	<	suite.addTest(new TestSuite(DelayQueueTest.class));
159	<	suite.addTest(new TestSuite(ExchangerTest.class));
160	<	suite.addTest(new TestSuite(ExecutorsTest.class));
161	<	suite.addTest(new TestSuite(ExecutorCompletionServiceTest.class));
125	<	suite.addTest(new TestSuite(FutureTaskTest.class));
126	<	suite.addTest(new TestSuite(LinkedBlockingQueueTest.class));
127	<	suite.addTest(new TestSuite(LinkedListTest.class));
128	<	suite.addTest(new TestSuite(LockSupportTest.class));
129	<	suite.addTest(new TestSuite(PriorityBlockingQueueTest.class));
130	<	suite.addTest(new TestSuite(PriorityQueueTest.class));
131	<	suite.addTest(new TestSuite(ReentrantLockTest.class));
132	<	suite.addTest(new TestSuite(ReentrantReadWriteLockTest.class));
133	<	suite.addTest(new TestSuite(ScheduledExecutorTest.class));
134	<	suite.addTest(new TestSuite(SemaphoreTest.class));
135	<	suite.addTest(new TestSuite(SynchronousQueueTest.class));
136	<	suite.addTest(new TestSuite(SystemTest.class));
137	<	suite.addTest(new TestSuite(ThreadLocalTest.class));
138	<	suite.addTest(new TestSuite(ThreadPoolExecutorTest.class));
139	<	suite.addTest(new TestSuite(ThreadTest.class));
140	<	suite.addTest(new TestSuite(TimeUnitTest.class));
141	<
133	>	* Runs all JSR166 unit tests using junit.textui.TestRunner
134	>	*/
135	>	public static void main(String[] args) {
136	>	if (useSecurityManager) {
137	>	System.err.println("Setting a permissive security manager");
138	>	Policy.setPolicy(permissivePolicy());
139	>	System.setSecurityManager(new SecurityManager());
140	>	}
141	>	int iters = (args.length == 0) ? 1 : Integer.parseInt(args[0]);
142	>
143	>	Test s = suite();
144	>	for (int i = 0; i < iters; ++i) {
145	>	junit.textui.TestRunner.run(s);
146	>	System.gc();
147	>	System.runFinalization();
148	>	}
149	>	System.exit(0);
150	>	}
151	>
152	>	public static TestSuite newTestSuite(Object... suiteOrClasses) {
153	>	TestSuite suite = new TestSuite();
154	>	for (Object suiteOrClass : suiteOrClasses) {
155	>	if (suiteOrClass instanceof TestSuite)
156	>	suite.addTest((TestSuite) suiteOrClass);
157	>	else if (suiteOrClass instanceof Class)
158	>	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
159	>	else
160	>	throw new ClassCastException("not a test suite or class");
161	>	}
162		return suite;
163		}
164
165	+	/**
166	+	* Collects all JSR166 unit tests as one suite.
167	+	*/
168	+	public static Test suite() {
169	+	return newTestSuite(
170	+	ForkJoinPoolTest.suite(),
171	+	ForkJoinTaskTest.suite(),
172	+	RecursiveActionTest.suite(),
173	+	RecursiveTaskTest.suite(),
174	+	LinkedTransferQueueTest.suite(),
175	+	PhaserTest.suite(),
176	+	ThreadLocalRandomTest.suite(),
177	+	AbstractExecutorServiceTest.suite(),
178	+	AbstractQueueTest.suite(),
179	+	AbstractQueuedSynchronizerTest.suite(),
180	+	AbstractQueuedLongSynchronizerTest.suite(),
181	+	ArrayBlockingQueueTest.suite(),
182	+	ArrayDequeTest.suite(),
183	+	AtomicBooleanTest.suite(),
184	+	AtomicIntegerArrayTest.suite(),
185	+	AtomicIntegerFieldUpdaterTest.suite(),
186	+	AtomicIntegerTest.suite(),
187	+	AtomicLongArrayTest.suite(),
188	+	AtomicLongFieldUpdaterTest.suite(),
189	+	AtomicLongTest.suite(),
190	+	AtomicMarkableReferenceTest.suite(),
191	+	AtomicReferenceArrayTest.suite(),
192	+	AtomicReferenceFieldUpdaterTest.suite(),
193	+	AtomicReferenceTest.suite(),
194	+	AtomicStampedReferenceTest.suite(),
195	+	ConcurrentHashMapTest.suite(),
196	+	ConcurrentLinkedDequeTest.suite(),
197	+	ConcurrentLinkedQueueTest.suite(),
198	+	ConcurrentSkipListMapTest.suite(),
199	+	ConcurrentSkipListSubMapTest.suite(),
200	+	ConcurrentSkipListSetTest.suite(),
201	+	ConcurrentSkipListSubSetTest.suite(),
202	+	CopyOnWriteArrayListTest.suite(),
203	+	CopyOnWriteArraySetTest.suite(),
204	+	CountDownLatchTest.suite(),
205	+	CyclicBarrierTest.suite(),
206	+	DelayQueueTest.suite(),
207	+	EntryTest.suite(),
208	+	ExchangerTest.suite(),
209	+	ExecutorsTest.suite(),
210	+	ExecutorCompletionServiceTest.suite(),
211	+	FutureTaskTest.suite(),
212	+	LinkedBlockingDequeTest.suite(),
213	+	LinkedBlockingQueueTest.suite(),
214	+	LinkedListTest.suite(),
215	+	LockSupportTest.suite(),
216	+	PriorityBlockingQueueTest.suite(),
217	+	PriorityQueueTest.suite(),
218	+	ReentrantLockTest.suite(),
219	+	ReentrantReadWriteLockTest.suite(),
220	+	ScheduledExecutorTest.suite(),
221	+	ScheduledExecutorSubclassTest.suite(),
222	+	SemaphoreTest.suite(),
223	+	SynchronousQueueTest.suite(),
224	+	SystemTest.suite(),
225	+	ThreadLocalTest.suite(),
226	+	ThreadPoolExecutorTest.suite(),
227	+	ThreadPoolExecutorSubclassTest.suite(),
228	+	ThreadTest.suite(),
229	+	TimeUnitTest.suite(),
230	+	TreeMapTest.suite(),
231	+	TreeSetTest.suite(),
232	+	TreeSubMapTest.suite(),
233	+	TreeSubSetTest.suite());
234	+	}
235	+
236
237		public static long SHORT_DELAY_MS;
238		public static long SMALL_DELAY_MS;
#	Line 150 | Line 241 | public class JSR166TestCase extends Test
241
242
243		/**
244	<	* Return the shortest timed delay. This could
245	<	* be reimplmented to use for example a Property.
246	<	*/
244	>	* Returns the shortest timed delay. This could
245	>	* be reimplemented to use for example a Property.
246	>	*/
247		protected long getShortDelay() {
248	<	return 100;
248	>	return 50;
249		}
250
251
252		/**
253	<	* Set delays as multiples of SHORT_DELAY.
253	>	* Sets delays as multiples of SHORT_DELAY.
254		*/
255	<	protected  void setDelays() {
255	>	protected void setDelays() {
256		SHORT_DELAY_MS = getShortDelay();
257	<	SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
257	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
258		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
259	<	LONG_DELAY_MS = SHORT_DELAY_MS * 50;
259	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 50;
260		}
261
262		/**
263	<	* Flag set true if any threadAssert methods fail
263	>	* The first exception encountered if any threadAssertXXX method fails.
264		*/
265	<	volatile boolean threadFailed;
265	>	private final AtomicReference<Throwable> threadFailure
266	>	= new AtomicReference<Throwable>(null);
267
268		/**
269	<	* Initialize test to indicate that no thread assertions have failed
269	>	* Records an exception so that it can be rethrown later in the test
270	>	* harness thread, triggering a test case failure.  Only the first
271	>	* failure is recorded; subsequent calls to this method from within
272	>	* the same test have no effect.
273		*/
274	<	public void setUp() {
274	>	public void threadRecordFailure(Throwable t) {
275	>	threadFailure.compareAndSet(null, t);
276	>	}
277	>
278	>	public void setUp() {
279		setDelays();
181	–	threadFailed = false;
280		}
281
282		/**
283	<	* Trigger test case failure if any thread assertions have failed
284	<	*/
285	<	public void tearDown() {
286	<	assertFalse(threadFailed);
283	>	* Triggers test case failure if any thread assertions have failed,
284	>	* by rethrowing, in the test harness thread, any exception recorded
285	>	* earlier by threadRecordFailure.
286	>	*/
287	>	public void tearDown() throws Exception {
288	>	Throwable t = threadFailure.get();
289	>	if (t != null) {
290	>	if (t instanceof Error)
291	>	throw (Error) t;
292	>	else if (t instanceof RuntimeException)
293	>	throw (RuntimeException) t;
294	>	else if (t instanceof Exception)
295	>	throw (Exception) t;
296	>	else {
297	>	AssertionFailedError afe =
298	>	new AssertionFailedError(t.toString());
299	>	afe.initCause(t);
300	>	throw afe;
301	>	}
302	>	}
303		}
304
305		/**
306	<	* Fail, also setting status to indicate current testcase should fail
307	<	*/
306	>	* Just like fail(reason), but additionally recording (using
307	>	* threadRecordFailure) any AssertionFailedError thrown, so that
308	>	* the current testcase will fail.
309	>	*/
310		public void threadFail(String reason) {
311	<	threadFailed = true;
312	<	fail(reason);
311	>	try {
312	>	fail(reason);
313	>	} catch (AssertionFailedError t) {
314	>	threadRecordFailure(t);
315	>	fail(reason);
316	>	}
317		}
318
319		/**
320	<	* If expression not true, set status to indicate current testcase
321	<	* should fail
322	<	*/
320	>	* Just like assertTrue(b), but additionally recording (using
321	>	* threadRecordFailure) any AssertionFailedError thrown, so that
322	>	* the current testcase will fail.
323	>	*/
324		public void threadAssertTrue(boolean b) {
325	<	if (!b) {
205	<	threadFailed = true;
325	>	try {
326		assertTrue(b);
327	+	} catch (AssertionFailedError t) {
328	+	threadRecordFailure(t);
329	+	throw t;
330		}
331		}
332
333		/**
334	<	* If expression not false, set status to indicate current testcase
335	<	* should fail
336	<	*/
334	>	* Just like assertFalse(b), but additionally recording (using
335	>	* threadRecordFailure) any AssertionFailedError thrown, so that
336	>	* the current testcase will fail.
337	>	*/
338		public void threadAssertFalse(boolean b) {
339	<	if (b) {
216	<	threadFailed = true;
339	>	try {
340		assertFalse(b);
341	+	} catch (AssertionFailedError t) {
342	+	threadRecordFailure(t);
343	+	throw t;
344		}
345		}
346
347		/**
348	<	* If argument not null, set status to indicate current testcase
349	<	* should fail
350	<	*/
348	>	* Just like assertNull(x), but additionally recording (using
349	>	* threadRecordFailure) any AssertionFailedError thrown, so that
350	>	* the current testcase will fail.
351	>	*/
352		public void threadAssertNull(Object x) {
353	<	if (x != null) {
227	<	threadFailed = true;
353	>	try {
354		assertNull(x);
355	+	} catch (AssertionFailedError t) {
356	+	threadRecordFailure(t);
357	+	throw t;
358		}
359		}
360
361		/**
362	<	* If arguments not equal, set status to indicate current testcase
363	<	* should fail
364	<	*/
362	>	* Just like assertEquals(x, y), but additionally recording (using
363	>	* threadRecordFailure) any AssertionFailedError thrown, so that
364	>	* the current testcase will fail.
365	>	*/
366		public void threadAssertEquals(long x, long y) {
367	<	if (x != y) {
238	<	threadFailed = true;
367	>	try {
368		assertEquals(x, y);
369	+	} catch (AssertionFailedError t) {
370	+	threadRecordFailure(t);
371	+	throw t;
372		}
373		}
374
375		/**
376	<	* If arguments not equal, set status to indicate current testcase
377	<	* should fail
378	<	*/
376	>	* Just like assertEquals(x, y), but additionally recording (using
377	>	* threadRecordFailure) any AssertionFailedError thrown, so that
378	>	* the current testcase will fail.
379	>	*/
380		public void threadAssertEquals(Object x, Object y) {
381	<	if (x != y && (x == null || !x.equals(y))) {
249	<	threadFailed = true;
381	>	try {
382		assertEquals(x, y);
383	+	} catch (AssertionFailedError t) {
384	+	threadRecordFailure(t);
385	+	throw t;
386	+	} catch (Throwable t) {
387	+	threadUnexpectedException(t);
388		}
389		}
390
391		/**
392	<	* threadFail with message "should throw exception"
393	<	*/
392	>	* Just like assertSame(x, y), but additionally recording (using
393	>	* threadRecordFailure) any AssertionFailedError thrown, so that
394	>	* the current testcase will fail.
395	>	*/
396	>	public void threadAssertSame(Object x, Object y) {
397	>	try {
398	>	assertSame(x, y);
399	>	} catch (AssertionFailedError t) {
400	>	threadRecordFailure(t);
401	>	throw t;
402	>	}
403	>	}
404	>
405	>	/**
406	>	* Calls threadFail with message "should throw exception".
407	>	*/
408		public void threadShouldThrow() {
409	<	threadFailed = true;
259	<	fail("should throw exception");
409	>	threadFail("should throw exception");
410		}
411
412		/**
413	<	* threadFail with message "Unexpected exception"
413	>	* Calls threadFail with message "should throw" + exceptionName.
414		*/
415	<	public void threadUnexpectedException() {
416	<	threadFailed = true;
267	<	fail("Unexpected exception");
415	>	public void threadShouldThrow(String exceptionName) {
416	>	threadFail("should throw " + exceptionName);
417		}
418
419	+	/**
420	+	* Records the given exception using {@link #threadRecordFailure},
421	+	* then rethrows the exception, wrapping it in an
422	+	* AssertionFailedError if necessary.
423	+	*/
424	+	public void threadUnexpectedException(Throwable t) {
425	+	threadRecordFailure(t);
426	+	t.printStackTrace();
427	+	if (t instanceof RuntimeException)
428	+	throw (RuntimeException) t;
429	+	else if (t instanceof Error)
430	+	throw (Error) t;
431	+	else {
432	+	AssertionFailedError afe =
433	+	new AssertionFailedError("unexpected exception: " + t);
434	+	t.initCause(t);
435	+	throw afe;
436	+	}
437	+	}
438
439		/**
440	<	* Wait out termination of a thread pool or fail doing so
440	>	* Waits out termination of a thread pool or fails doing so.
441		*/
442		public void joinPool(ExecutorService exec) {
443		try {
444		exec.shutdown();
445	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
446	<	} catch(InterruptedException ie) {
447	<	fail("Unexpected exception");
445	>	assertTrue("ExecutorService did not terminate in a timely manner",
446	>	exec.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
447	>	} catch (SecurityException ok) {
448	>	// Allowed in case test doesn't have privs
449	>	} catch (InterruptedException ie) {
450	>	fail("Unexpected InterruptedException");
451		}
452		}
453
454
455		/**
456	<	* fail with message "should throw exception"
457	<	*/
456	>	* Fails with message "should throw exception".
457	>	*/
458		public void shouldThrow() {
459		fail("Should throw exception");
460		}
461
462		/**
463	<	* fail with message "Unexpected exception"
463	>	* Fails with message "should throw " + exceptionName.
464		*/
465	<	public void unexpectedException() {
466	<	fail("Unexpected exception");
465	>	public void shouldThrow(String exceptionName) {
466	>	fail("Should throw " + exceptionName);
467		}
468
298	–
469		/**
470		* The number of elements to place in collections, arrays, etc.
471		*/
472	<	static final int SIZE = 20;
472	>	public static final int SIZE = 20;
473
474		// Some convenient Integer constants
475
476	<	static final Integer zero = new Integer(0);
477	<	static final Integer one = new Integer(1);
478	<	static final Integer two = new Integer(2);
479	<	static final Integer three  = new Integer(3);
480	<	static final Integer four  = new Integer(4);
481	<	static final Integer five  = new Integer(5);
482	<	static final Integer six = new Integer(6);
483	<	static final Integer seven = new Integer(7);
484	<	static final Integer eight = new Integer(8);
485	<	static final Integer nine = new Integer(9);
486	<	static final Integer m1  = new Integer(-1);
487	<	static final Integer m2  = new Integer(-2);
488	<	static final Integer m3  = new Integer(-3);
489	<	static final Integer m4 = new Integer(-4);
490	<	static final Integer m5 = new Integer(-5);
491	<	static final Integer m10 = new Integer(-10);
476	>	public static final Integer zero  = new Integer(0);
477	>	public static final Integer one   = new Integer(1);
478	>	public static final Integer two   = new Integer(2);
479	>	public static final Integer three = new Integer(3);
480	>	public static final Integer four  = new Integer(4);
481	>	public static final Integer five  = new Integer(5);
482	>	public static final Integer six   = new Integer(6);
483	>	public static final Integer seven = new Integer(7);
484	>	public static final Integer eight = new Integer(8);
485	>	public static final Integer nine  = new Integer(9);
486	>	public static final Integer m1  = new Integer(-1);
487	>	public static final Integer m2  = new Integer(-2);
488	>	public static final Integer m3  = new Integer(-3);
489	>	public static final Integer m4  = new Integer(-4);
490	>	public static final Integer m5  = new Integer(-5);
491	>	public static final Integer m6  = new Integer(-6);
492	>	public static final Integer m10 = new Integer(-10);
493
494
495		/**
496	+	* Runs Runnable r with a security policy that permits precisely
497	+	* the specified permissions.  If there is no current security
498	+	* manager, the runnable is run twice, both with and without a
499	+	* security manager.  We require that any security manager permit
500	+	* getPolicy/setPolicy.
501	+	*/
502	+	public void runWithPermissions(Runnable r, Permission... permissions) {
503	+	SecurityManager sm = System.getSecurityManager();
504	+	if (sm == null) {
505	+	r.run();
506	+	Policy savedPolicy = Policy.getPolicy();
507	+	try {
508	+	Policy.setPolicy(permissivePolicy());
509	+	System.setSecurityManager(new SecurityManager());
510	+	runWithPermissions(r, permissions);
511	+	} finally {
512	+	System.setSecurityManager(null);
513	+	Policy.setPolicy(savedPolicy);
514	+	}
515	+	} else {
516	+	Policy savedPolicy = Policy.getPolicy();
517	+	AdjustablePolicy policy = new AdjustablePolicy(permissions);
518	+	Policy.setPolicy(policy);
519	+
520	+	try {
521	+	r.run();
522	+	} finally {
523	+	policy.addPermission(new SecurityPermission("setPolicy"));
524	+	Policy.setPolicy(savedPolicy);
525	+	}
526	+	}
527	+	}
528	+
529	+	/**
530	+	* Runs a runnable without any permissions.
531	+	*/
532	+	public void runWithoutPermissions(Runnable r) {
533	+	runWithPermissions(r);
534	+	}
535	+
536	+	/**
537		* A security policy where new permissions can be dynamically added
538		* or all cleared.
539		*/
540	<	static class AdjustablePolicy extends java.security.Policy {
540	>	public static class AdjustablePolicy extends java.security.Policy {
541		Permissions perms = new Permissions();
542	<	AdjustablePolicy() { }
542	>	AdjustablePolicy(Permission... permissions) {
543	>	for (Permission permission : permissions)
544	>	perms.add(permission);
545	>	}
546		void addPermission(Permission perm) { perms.add(perm); }
547		void clearPermissions() { perms = new Permissions(); }
548	<	public PermissionCollection getPermissions(CodeSource cs) {
549	<	return perms;
550	<	}
551	<	public PermissionCollection getPermissions(ProtectionDomain pd) {
552	<	return perms;
553	<	}
554	<	public boolean implies(ProtectionDomain pd, Permission p) {
555	<	return perms.implies(p);
556	<	}
557	<	public void refresh() {}
548	>	public PermissionCollection getPermissions(CodeSource cs) {
549	>	return perms;
550	>	}
551	>	public PermissionCollection getPermissions(ProtectionDomain pd) {
552	>	return perms;
553	>	}
554	>	public boolean implies(ProtectionDomain pd, Permission p) {
555	>	return perms.implies(p);
556	>	}
557	>	public void refresh() {}
558		}
559
560	<
561	<	// Some convenient Runnable classes
562	<
563	<	static class NoOpRunnable implements Runnable {
564	<	public void run() {}
560	>	/**
561	>	* Returns a policy containing all the permissions we ever need.
562	>	*/
563	>	public static Policy permissivePolicy() {
564	>	return new AdjustablePolicy
565	>	// Permissions j.u.c. needs directly
566	>	(new RuntimePermission("modifyThread"),
567	>	new RuntimePermission("getClassLoader"),
568	>	new RuntimePermission("setContextClassLoader"),
569	>	// Permissions needed to change permissions!
570	>	new SecurityPermission("getPolicy"),
571	>	new SecurityPermission("setPolicy"),
572	>	new RuntimePermission("setSecurityManager"),
573	>	// Permissions needed by the junit test harness
574	>	new RuntimePermission("accessDeclaredMembers"),
575	>	new PropertyPermission("*", "read"),
576	>	new java.io.FilePermission("<<ALL FILES>>", "read"));
577		}
578
579	<	static class NoOpCallable implements Callable {
580	<	public Object call() { return Boolean.TRUE; }
579	>	/**
580	>	* Sleeps until the given time has elapsed.
581	>	* Throws AssertionFailedError if interrupted.
582	>	*/
583	>	void sleep(long millis) {
584	>	try {
585	>	Thread.sleep(millis);
586	>	} catch (InterruptedException ie) {
587	>	AssertionFailedError afe =
588	>	new AssertionFailedError("Unexpected InterruptedException");
589	>	afe.initCause(ie);
590	>	throw afe;
591	>	}
592		}
593
594	<	static final String TEST_STRING = "a test string";
595	<
596	<	static class StringTask implements Callable<String> {
597	<	public String call() { return TEST_STRING; }
594	>	/**
595	>	* Sleeps until the timeout has elapsed, or interrupted.
596	>	* Does <em>NOT</em> throw InterruptedException.
597	>	*/
598	>	void sleepTillInterrupted(long timeoutMillis) {
599	>	try {
600	>	Thread.sleep(timeoutMillis);
601	>	} catch (InterruptedException wakeup) {}
602		}
603
604	<	static class NPETask implements Callable<String> {
605	<	public String call() { throw new NullPointerException(); }
604	>	/**
605	>	* Returns a new started daemon Thread running the given runnable.
606	>	*/
607	>	Thread newStartedThread(Runnable runnable) {
608	>	Thread t = new Thread(runnable);
609	>	t.setDaemon(true);
610	>	t.start();
611	>	return t;
612		}
613
614	<	static class CallableOne implements Callable<Integer> {
615	<	public Integer call() { return one; }
614	>	/**
615	>	* Waits for the specified time (in milliseconds) for the thread
616	>	* to terminate (using {@link Thread#join(long)}), else interrupts
617	>	* the thread (in the hope that it may terminate later) and fails.
618	>	*/
619	>	void awaitTermination(Thread t, long timeoutMillis) {
620	>	try {
621	>	t.join(timeoutMillis);
622	>	} catch (InterruptedException ie) {
623	>	threadUnexpectedException(ie);
624	>	} finally {
625	>	if (t.isAlive()) {
626	>	t.interrupt();
627	>	fail("Test timed out");
628	>	}
629	>	}
630		}
631
632	<	class ShortRunnable implements Runnable {
633	<	public void run() {
632	>	// Some convenient Runnable classes
633	>
634	>	public abstract class CheckedRunnable implements Runnable {
635	>	protected abstract void realRun() throws Throwable;
636	>
637	>	public final void run() {
638		try {
639	<	Thread.sleep(SHORT_DELAY_MS);
640	<	}
641	<	catch(Exception e) {
376	<	threadUnexpectedException();
639	>	realRun();
640	>	} catch (Throwable t) {
641	>	threadUnexpectedException(t);
642		}
643		}
644		}
645
646	<	class ShortInterruptedRunnable implements Runnable {
647	<	public void run() {
646	>	public abstract class RunnableShouldThrow implements Runnable {
647	>	protected abstract void realRun() throws Throwable;
648	>
649	>	final Class<?> exceptionClass;
650	>
651	>	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
652	>	this.exceptionClass = exceptionClass;
653	>	}
654	>
655	>	public final void run() {
656		try {
657	<	Thread.sleep(SHORT_DELAY_MS);
658	<	threadShouldThrow();
659	<	}
660	<	catch(InterruptedException success) {
657	>	realRun();
658	>	threadShouldThrow(exceptionClass.getSimpleName());
659	>	} catch (Throwable t) {
660	>	if (! exceptionClass.isInstance(t))
661	>	threadUnexpectedException(t);
662		}
663		}
664		}
665
666	<	class SmallRunnable implements Runnable {
667	<	public void run() {
666	>	public abstract class ThreadShouldThrow extends Thread {
667	>	protected abstract void realRun() throws Throwable;
668	>
669	>	final Class<?> exceptionClass;
670	>
671	>	<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) {
672	>	this.exceptionClass = exceptionClass;
673	>	}
674	>
675	>	public final void run() {
676		try {
677	<	Thread.sleep(SMALL_DELAY_MS);
678	<	}
679	<	catch(Exception e) {
680	<	threadUnexpectedException();
677	>	realRun();
678	>	threadShouldThrow(exceptionClass.getSimpleName());
679	>	} catch (Throwable t) {
680	>	if (! exceptionClass.isInstance(t))
681	>	threadUnexpectedException(t);
682		}
683		}
684		}
685
686	<	class SmallPossiblyInterruptedRunnable implements Runnable {
687	<	public void run() {
686	>	public abstract class CheckedInterruptedRunnable implements Runnable {
687	>	protected abstract void realRun() throws Throwable;
688	>
689	>	public final void run() {
690		try {
691	<	Thread.sleep(SMALL_DELAY_MS);
692	<	}
693	<	catch(Exception e) {
691	>	realRun();
692	>	threadShouldThrow("InterruptedException");
693	>	} catch (InterruptedException success) {
694	>	} catch (Throwable t) {
695	>	threadUnexpectedException(t);
696		}
697		}
698		}
699
700	<	class SmallCallable implements Callable {
701	<	public Object call() {
700	>	public abstract class CheckedCallable<T> implements Callable<T> {
701	>	protected abstract T realCall() throws Throwable;
702	>
703	>	public final T call() {
704		try {
705	<	Thread.sleep(SMALL_DELAY_MS);
705	>	return realCall();
706	>	} catch (Throwable t) {
707	>	threadUnexpectedException(t);
708	>	return null;
709		}
418	–	catch(Exception e) {
419	–	threadUnexpectedException();
420	–	}
421	–	return Boolean.TRUE;
710		}
711		}
712
713	<	class SmallInterruptedRunnable implements Runnable {
714	<	public void run() {
713	>	public abstract class CheckedInterruptedCallable<T>
714	>	implements Callable<T> {
715	>	protected abstract T realCall() throws Throwable;
716	>
717	>	public final T call() {
718		try {
719	<	Thread.sleep(SMALL_DELAY_MS);
720	<	threadShouldThrow();
721	<	}
722	<	catch(InterruptedException success) {
719	>	T result = realCall();
720	>	threadShouldThrow("InterruptedException");
721	>	return result;
722	>	} catch (InterruptedException success) {
723	>	} catch (Throwable t) {
724	>	threadUnexpectedException(t);
725		}
726	+	return null;
727		}
728		}
729
730	+	public static class NoOpRunnable implements Runnable {
731	+	public void run() {}
732	+	}
733
734	<	class MediumRunnable implements Runnable {
735	<	public void run() {
734	>	public static class NoOpCallable implements Callable {
735	>	public Object call() { return Boolean.TRUE; }
736	>	}
737	>
738	>	public static final String TEST_STRING = "a test string";
739	>
740	>	public static class StringTask implements Callable<String> {
741	>	public String call() { return TEST_STRING; }
742	>	}
743	>
744	>	public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
745	>	return new CheckedCallable<String>() {
746	>	public String realCall() {
747	>	try {
748	>	latch.await();
749	>	} catch (InterruptedException quittingTime) {}
750	>	return TEST_STRING;
751	>	}};
752	>	}
753	>
754	>	public static class NPETask implements Callable<String> {
755	>	public String call() { throw new NullPointerException(); }
756	>	}
757	>
758	>	public static class CallableOne implements Callable<Integer> {
759	>	public Integer call() { return one; }
760	>	}
761	>
762	>	public class ShortRunnable extends CheckedRunnable {
763	>	protected void realRun() throws Throwable {
764	>	Thread.sleep(SHORT_DELAY_MS);
765	>	}
766	>	}
767	>
768	>	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
769	>	protected void realRun() throws InterruptedException {
770	>	Thread.sleep(SHORT_DELAY_MS);
771	>	}
772	>	}
773	>
774	>	public class SmallRunnable extends CheckedRunnable {
775	>	protected void realRun() throws Throwable {
776	>	Thread.sleep(SMALL_DELAY_MS);
777	>	}
778	>	}
779	>
780	>	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
781	>	protected void realRun() {
782		try {
783	<	Thread.sleep(MEDIUM_DELAY_MS);
784	<	}
442	<	catch(Exception e) {
443	<	threadUnexpectedException();
444	<	}
783	>	Thread.sleep(SMALL_DELAY_MS);
784	>	} catch (InterruptedException ok) {}
785		}
786		}
787
788	<	class MediumInterruptedRunnable implements Runnable {
789	<	public void run() {
788	>	public class SmallCallable extends CheckedCallable {
789	>	protected Object realCall() throws InterruptedException {
790	>	Thread.sleep(SMALL_DELAY_MS);
791	>	return Boolean.TRUE;
792	>	}
793	>	}
794	>
795	>	public class MediumRunnable extends CheckedRunnable {
796	>	protected void realRun() throws Throwable {
797	>	Thread.sleep(MEDIUM_DELAY_MS);
798	>	}
799	>	}
800	>
801	>	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
802	>	protected void realRun() throws InterruptedException {
803	>	Thread.sleep(MEDIUM_DELAY_MS);
804	>	}
805	>	}
806	>
807	>	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
808	>	protected void realRun() {
809		try {
810		Thread.sleep(MEDIUM_DELAY_MS);
811	<	threadShouldThrow();
453	<	}
454	<	catch(InterruptedException success) {
455	<	}
811	>	} catch (InterruptedException ok) {}
812		}
813		}
814
815	<	class MediumPossiblyInterruptedRunnable implements Runnable {
816	<	public void run() {
815	>	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
816	>	protected void realRun() {
817		try {
818	<	Thread.sleep(MEDIUM_DELAY_MS);
819	<	}
464	<	catch(InterruptedException success) {
465	<	}
818	>	Thread.sleep(LONG_DELAY_MS);
819	>	} catch (InterruptedException ok) {}
820		}
821		}
822
823		/**
824		* For use as ThreadFactory in constructors
825		*/
826	<	static class SimpleThreadFactory implements ThreadFactory{
827	<	public Thread newThread(Runnable r){
826	>	public static class SimpleThreadFactory implements ThreadFactory {
827	>	public Thread newThread(Runnable r) {
828		return new Thread(r);
829	<	}
829	>	}
830	>	}
831	>
832	>	public interface TrackedRunnable extends Runnable {
833	>	boolean isDone();
834		}
835
836	<	static class TrackedShortRunnable implements Runnable {
837	<	volatile boolean done = false;
836	>	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
837	>	return new TrackedRunnable() {
838	>	private volatile boolean done = false;
839	>	public boolean isDone() { return done; }
840	>	public void run() {
841	>	try {
842	>	Thread.sleep(timeoutMillis);
843	>	done = true;
844	>	} catch (InterruptedException ok) {}
845	>	}
846	>	};
847	>	}
848	>
849	>	public static class TrackedShortRunnable implements Runnable {
850	>	public volatile boolean done = false;
851	>	public void run() {
852	>	try {
853	>	Thread.sleep(SHORT_DELAY_MS);
854	>	done = true;
855	>	} catch (InterruptedException ok) {}
856	>	}
857	>	}
858	>
859	>	public static class TrackedSmallRunnable implements Runnable {
860	>	public volatile boolean done = false;
861		public void run() {
862		try {
863		Thread.sleep(SMALL_DELAY_MS);
864		done = true;
865	<	} catch(Exception e){
485	<	}
865	>	} catch (InterruptedException ok) {}
866		}
867		}
868
869	<	static class TrackedMediumRunnable implements Runnable {
870	<	volatile boolean done = false;
869	>	public static class TrackedMediumRunnable implements Runnable {
870	>	public volatile boolean done = false;
871		public void run() {
872		try {
873		Thread.sleep(MEDIUM_DELAY_MS);
874		done = true;
875	<	} catch(Exception e){
496	<	}
875	>	} catch (InterruptedException ok) {}
876		}
877		}
878
879	<	static class TrackedLongRunnable implements Runnable {
880	<	volatile boolean done = false;
879	>	public static class TrackedLongRunnable implements Runnable {
880	>	public volatile boolean done = false;
881		public void run() {
882		try {
883		Thread.sleep(LONG_DELAY_MS);
884		done = true;
885	<	} catch(Exception e){
507	<	}
885	>	} catch (InterruptedException ok) {}
886		}
887		}
888
889	<	static class TrackedNoOpRunnable implements Runnable {
890	<	volatile boolean done = false;
889	>	public static class TrackedNoOpRunnable implements Runnable {
890	>	public volatile boolean done = false;
891		public void run() {
892		done = true;
893		}
894		}
895
896	<	static class TrackedCallable implements Callable {
897	<	volatile boolean done = false;
896	>	public static class TrackedCallable implements Callable {
897	>	public volatile boolean done = false;
898		public Object call() {
899		try {
900		Thread.sleep(SMALL_DELAY_MS);
901		done = true;
902	<	} catch(Exception e){
525	<	}
902	>	} catch (InterruptedException ok) {}
903		return Boolean.TRUE;
904		}
905		}
906
907		/**
908	+	* Analog of CheckedRunnable for RecursiveAction
909	+	*/
910	+	public abstract class CheckedRecursiveAction extends RecursiveAction {
911	+	protected abstract void realCompute() throws Throwable;
912	+
913	+	public final void compute() {
914	+	try {
915	+	realCompute();
916	+	} catch (Throwable t) {
917	+	threadUnexpectedException(t);
918	+	}
919	+	}
920	+	}
921	+
922	+	/**
923	+	* Analog of CheckedCallable for RecursiveTask
924	+	*/
925	+	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
926	+	protected abstract T realCompute() throws Throwable;
927	+
928	+	public final T compute() {
929	+	try {
930	+	return realCompute();
931	+	} catch (Throwable t) {
932	+	threadUnexpectedException(t);
933	+	return null;
934	+	}
935	+	}
936	+	}
937	+
938	+	/**
939		* For use as RejectedExecutionHandler in constructors
940		*/
941	<	static class NoOpREHandler implements RejectedExecutionHandler{
942	<	public void rejectedExecution(Runnable r, ThreadPoolExecutor executor){}
941	>	public static class NoOpREHandler implements RejectedExecutionHandler {
942	>	public void rejectedExecution(Runnable r,
943	>	ThreadPoolExecutor executor) {}
944		}
945	<
946	<
945	>
946	>	/**
947	>	* A CyclicBarrier that fails with AssertionFailedErrors instead
948	>	* of throwing checked exceptions.
949	>	*/
950	>	public class CheckedBarrier extends CyclicBarrier {
951	>	public CheckedBarrier(int parties) { super(parties); }
952	>
953	>	public int await() {
954	>	try {
955	>	return super.await();
956	>	} catch (Exception e) {
957	>	AssertionFailedError afe =
958	>	new AssertionFailedError("Unexpected exception: " + e);
959	>	afe.initCause(e);
960	>	throw afe;
961	>	}
962	>	}
963	>	}
964	>
965		}

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