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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.7 by dl, Sat Oct 25 16:02:13 2003 UTC vs.
Revision 1.67 by jsr166, Fri Oct 29 06:58:56 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 static java.util.concurrent.TimeUnit.NANOSECONDS;
15	>	import java.security.CodeSource;
16	>	import java.security.Permission;
17	>	import java.security.PermissionCollection;
18	>	import java.security.Permissions;
19	>	import java.security.Policy;
20	>	import java.security.ProtectionDomain;
21	>	import java.security.SecurityPermission;
22
23		/**
24		* Base class for JSR166 Junit TCK tests.  Defines some constants,
25		* utility methods and classes, as well as a simple framework for
26		* helping to make sure that assertions failing in generated threads
27		* cause the associated test that generated them to itself fail (which
28	<	* JUnit doe not otherwise arrange).  The rules for creating such
28	>	* JUnit does not otherwise arrange).  The rules for creating such
29		* tests are:
30		*
31		* <ol>
32		*
33		* <li> All assertions in code running in generated threads must use
34	<	* the forms {@link threadFail} , {@link threadAssertTrue} {@link
35	<	* threadAssertEquals}, or {@link threadAssertNull}, (not
36	<	* <tt>fail</tt>, <tt>assertTrue</tt>, etc.) It is OK (but not
34	>	* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
35	>	* #threadAssertEquals}, or {@link #threadAssertNull}, (not
36	>	* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
37		* particularly recommended) for other code to use these forms too.
38		* Only the most typically used JUnit assertion methods are defined
39		* this way, but enough to live with.</li>
40		*
41	<	* <li> If you override {@link setUp} or {@link tearDown}, make sure
42	<	* to invoke <tt>super.setUp</tt> and <tt>super.tearDown</tt> within
41	>	* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
42	>	* to invoke {@code super.setUp} and {@code super.tearDown} within
43		* them. These methods are used to clear and check for thread
44		* assertion failures.</li>
45		*
46	<	* <li>All delays and timeouts must use one of the constants <tt>
47	<	* SHORT_DELAY_MS</tt>, <tt> SMALL_DELAY_MS</tt>, <tt> MEDIUM_DELAY_MS</tt>,
48	<	* <tt> LONG_DELAY_MS</tt>. The idea here is that a SHORT is always
46	>	* <li>All delays and timeouts must use one of the constants {@code
47	>	* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
48	>	* {@code LONG_DELAY_MS}. The idea here is that a SHORT is always
49		* discriminable from zero time, and always allows enough time for the
50		* small amounts of computation (creating a thread, calling a few
51		* methods, etc) needed to reach a timeout point. Similarly, a SMALL
52		* is always discriminable as larger than SHORT and smaller than
53		* MEDIUM.  And so on. These constants are set to conservative values,
54		* but even so, if there is ever any doubt, they can all be increased
55	<	* in one spot to rerun tests on slower platforms</li>
55	>	* in one spot to rerun tests on slower platforms.</li>
56		*
57		* <li> All threads generated must be joined inside each test case
58	<	* method (or <tt>fail</tt> to do so) before returning from the
59	<	* method. The <tt> joinPool</tt> method can be used to do this when
58	>	* method (or {@code fail} to do so) before returning from the
59	>	* method. The {@code joinPool} method can be used to do this when
60		* using Executors.</li>
61		*
62		* </ol>
#	Line 62 | Line 71 | import java.security.*;
71		* "normal" behaviors differ significantly. And sometimes testcases
72		* cover multiple methods when they cannot be tested in
73		* isolation.</li>
74	<	*
74	>	*
75		* <li> The documentation style for testcases is to provide as javadoc
76		* a simple sentence or two describing the property that the testcase
77		* method purports to test. The javadocs do not say anything about how
#	Line 79 | Line 88 | import java.security.*;
88		* any particular package to simplify things for people integrating
89		* them in TCK test suites.</li>
90		*
91	<	* <li> As a convenience, the <tt>main</tt> of this class (JSR166TestCase)
91	>	* <li> As a convenience, the {@code main} of this class (JSR166TestCase)
92		* runs all JSR166 unit tests.</li>
93		*
94		* </ul>
95		*/
96		public class JSR166TestCase extends TestCase {
97	+	private static final boolean useSecurityManager =
98	+	Boolean.getBoolean("jsr166.useSecurityManager");
99	+
100	+	protected static final boolean expensiveTests =
101	+	Boolean.getBoolean("jsr166.expensiveTests");
102	+
103		/**
104	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
105	<	*/
106	<	public static void main (String[] args) {
107	<	junit.textui.TestRunner.run (suite());
104	>	* If true, report on stdout all "slow" tests, that is, ones that
105	>	* take more than profileThreshold milliseconds to execute.
106	>	*/
107	>	private static final boolean profileTests =
108	>	Boolean.getBoolean("jsr166.profileTests");
109	>
110	>	/**
111	>	* The number of milliseconds that tests are permitted for
112	>	* execution without being reported, when profileTests is set.
113	>	*/
114	>	private static final long profileThreshold =
115	>	Long.getLong("jsr166.profileThreshold", 100);
116	>
117	>	protected void runTest() throws Throwable {
118	>	if (profileTests)
119	>	runTestProfiled();
120	>	else
121	>	super.runTest();
122	>	}
123	>
124	>	protected void runTestProfiled() throws Throwable {
125	>	long t0 = System.nanoTime();
126	>	try {
127	>	super.runTest();
128	>	} finally {
129	>	long elapsedMillis =
130	>	(System.nanoTime() - t0) / (1000L * 1000L);
131	>	if (elapsedMillis >= profileThreshold)
132	>	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
133	>	}
134		}
135
136		/**
137	<	* Collects all JSR166 unit tests as one suite
138	<	*/
139	<	public static Test suite ( ) {
140	<	TestSuite suite = new TestSuite("JSR166 Unit Tests");
141	<
142	<	suite.addTest(new TestSuite(ArrayBlockingQueueTest.class));
143	<	suite.addTest(new TestSuite(AtomicBooleanTest.class));
144	<	suite.addTest(new TestSuite(AtomicIntegerArrayTest.class));
145	<	suite.addTest(new TestSuite(AtomicIntegerFieldUpdaterTest.class));
146	<	suite.addTest(new TestSuite(AtomicIntegerTest.class));
147	<	suite.addTest(new TestSuite(AtomicLongArrayTest.class));
148	<	suite.addTest(new TestSuite(AtomicLongFieldUpdaterTest.class));
149	<	suite.addTest(new TestSuite(AtomicLongTest.class));
150	<	suite.addTest(new TestSuite(AtomicMarkableReferenceTest.class));
151	<	suite.addTest(new TestSuite(AtomicReferenceArrayTest.class));
152	<	suite.addTest(new TestSuite(AtomicReferenceFieldUpdaterTest.class));
153	<	suite.addTest(new TestSuite(AtomicReferenceTest.class));
154	<	suite.addTest(new TestSuite(AtomicStampedReferenceTest.class));
155	<	suite.addTest(new TestSuite(CancellableTaskTest.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));
165	<	suite.addTest(new TestSuite(FairSemaphoreTest.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(PrivilegedFutureTaskTest.class));
132	<	suite.addTest(new TestSuite(ReentrantLockTest.class));
133	<	suite.addTest(new TestSuite(ReentrantReadWriteLockTest.class));
134	<	suite.addTest(new TestSuite(ScheduledExecutorTest.class));
135	<	suite.addTest(new TestSuite(SemaphoreTest.class));
136	<	suite.addTest(new TestSuite(SynchronousQueueTest.class));
137	<	suite.addTest(new TestSuite(SystemTest.class));
138	<	suite.addTest(new TestSuite(ThreadLocalTest.class));
139	<	suite.addTest(new TestSuite(ThreadPoolExecutorTest.class));
140	<	suite.addTest(new TestSuite(ThreadTest.class));
141	<	suite.addTest(new TestSuite(TimeUnitTest.class));
142	<
137	>	* Runs all JSR166 unit tests using junit.textui.TestRunner
138	>	*/
139	>	public static void main(String[] args) {
140	>	if (useSecurityManager) {
141	>	System.err.println("Setting a permissive security manager");
142	>	Policy.setPolicy(permissivePolicy());
143	>	System.setSecurityManager(new SecurityManager());
144	>	}
145	>	int iters = (args.length == 0) ? 1 : Integer.parseInt(args[0]);
146	>
147	>	Test s = suite();
148	>	for (int i = 0; i < iters; ++i) {
149	>	junit.textui.TestRunner.run(s);
150	>	System.gc();
151	>	System.runFinalization();
152	>	}
153	>	System.exit(0);
154	>	}
155	>
156	>	public static TestSuite newTestSuite(Object... suiteOrClasses) {
157	>	TestSuite suite = new TestSuite();
158	>	for (Object suiteOrClass : suiteOrClasses) {
159	>	if (suiteOrClass instanceof TestSuite)
160	>	suite.addTest((TestSuite) suiteOrClass);
161	>	else if (suiteOrClass instanceof Class)
162	>	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
163	>	else
164	>	throw new ClassCastException("not a test suite or class");
165	>	}
166		return suite;
167		}
168
169	+	/**
170	+	* Collects all JSR166 unit tests as one suite.
171	+	*/
172	+	public static Test suite() {
173	+	return newTestSuite(
174	+	ForkJoinPoolTest.suite(),
175	+	ForkJoinTaskTest.suite(),
176	+	RecursiveActionTest.suite(),
177	+	RecursiveTaskTest.suite(),
178	+	LinkedTransferQueueTest.suite(),
179	+	PhaserTest.suite(),
180	+	ThreadLocalRandomTest.suite(),
181	+	AbstractExecutorServiceTest.suite(),
182	+	AbstractQueueTest.suite(),
183	+	AbstractQueuedSynchronizerTest.suite(),
184	+	AbstractQueuedLongSynchronizerTest.suite(),
185	+	ArrayBlockingQueueTest.suite(),
186	+	ArrayDequeTest.suite(),
187	+	AtomicBooleanTest.suite(),
188	+	AtomicIntegerArrayTest.suite(),
189	+	AtomicIntegerFieldUpdaterTest.suite(),
190	+	AtomicIntegerTest.suite(),
191	+	AtomicLongArrayTest.suite(),
192	+	AtomicLongFieldUpdaterTest.suite(),
193	+	AtomicLongTest.suite(),
194	+	AtomicMarkableReferenceTest.suite(),
195	+	AtomicReferenceArrayTest.suite(),
196	+	AtomicReferenceFieldUpdaterTest.suite(),
197	+	AtomicReferenceTest.suite(),
198	+	AtomicStampedReferenceTest.suite(),
199	+	ConcurrentHashMapTest.suite(),
200	+	ConcurrentLinkedDequeTest.suite(),
201	+	ConcurrentLinkedQueueTest.suite(),
202	+	ConcurrentSkipListMapTest.suite(),
203	+	ConcurrentSkipListSubMapTest.suite(),
204	+	ConcurrentSkipListSetTest.suite(),
205	+	ConcurrentSkipListSubSetTest.suite(),
206	+	CopyOnWriteArrayListTest.suite(),
207	+	CopyOnWriteArraySetTest.suite(),
208	+	CountDownLatchTest.suite(),
209	+	CyclicBarrierTest.suite(),
210	+	DelayQueueTest.suite(),
211	+	EntryTest.suite(),
212	+	ExchangerTest.suite(),
213	+	ExecutorsTest.suite(),
214	+	ExecutorCompletionServiceTest.suite(),
215	+	FutureTaskTest.suite(),
216	+	LinkedBlockingDequeTest.suite(),
217	+	LinkedBlockingQueueTest.suite(),
218	+	LinkedListTest.suite(),
219	+	LockSupportTest.suite(),
220	+	PriorityBlockingQueueTest.suite(),
221	+	PriorityQueueTest.suite(),
222	+	ReentrantLockTest.suite(),
223	+	ReentrantReadWriteLockTest.suite(),
224	+	ScheduledExecutorTest.suite(),
225	+	ScheduledExecutorSubclassTest.suite(),
226	+	SemaphoreTest.suite(),
227	+	SynchronousQueueTest.suite(),
228	+	SystemTest.suite(),
229	+	ThreadLocalTest.suite(),
230	+	ThreadPoolExecutorTest.suite(),
231	+	ThreadPoolExecutorSubclassTest.suite(),
232	+	ThreadTest.suite(),
233	+	TimeUnitTest.suite(),
234	+	TreeMapTest.suite(),
235	+	TreeSetTest.suite(),
236	+	TreeSubMapTest.suite(),
237	+	TreeSubSetTest.suite());
238	+	}
239	+
240
241		public static long SHORT_DELAY_MS;
242		public static long SMALL_DELAY_MS;
#	Line 151 | Line 245 | public class JSR166TestCase extends Test
245
246
247		/**
248	<	* Return the shortest timed delay. This could
249	<	* be reimplmented to use for example a Property.
250	<	*/
248	>	* Returns the shortest timed delay. This could
249	>	* be reimplemented to use for example a Property.
250	>	*/
251		protected long getShortDelay() {
252	<	return 100;
252	>	return 50;
253		}
254
255
256		/**
257	<	* Set delays as multiples of SHORT_DELAY.
257	>	* Sets delays as multiples of SHORT_DELAY.
258		*/
259	<	protected  void setDelays() {
259	>	protected void setDelays() {
260		SHORT_DELAY_MS = getShortDelay();
261	<	SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
261	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
262		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
263	<	LONG_DELAY_MS = SHORT_DELAY_MS * 50;
263	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 50;
264		}
265
266		/**
267	<	* Flag set true if any threadAssert methods fail
267	>	* The first exception encountered if any threadAssertXXX method fails.
268		*/
269	<	volatile boolean threadFailed;
269	>	private final AtomicReference<Throwable> threadFailure
270	>	= new AtomicReference<Throwable>(null);
271
272		/**
273	<	* Initialize test to indicate that no thread assertions have failed
273	>	* Records an exception so that it can be rethrown later in the test
274	>	* harness thread, triggering a test case failure.  Only the first
275	>	* failure is recorded; subsequent calls to this method from within
276	>	* the same test have no effect.
277		*/
278	<	public void setUp() {
278	>	public void threadRecordFailure(Throwable t) {
279	>	threadFailure.compareAndSet(null, t);
280	>	}
281	>
282	>	public void setUp() {
283		setDelays();
182	–	threadFailed = false;
284		}
285
286		/**
287	<	* Trigger test case failure if any thread assertions have failed
288	<	*/
289	<	public void tearDown() {
290	<	assertFalse(threadFailed);
287	>	* Triggers test case failure if any thread assertions have failed,
288	>	* by rethrowing, in the test harness thread, any exception recorded
289	>	* earlier by threadRecordFailure.
290	>	*/
291	>	public void tearDown() throws Exception {
292	>	Throwable t = threadFailure.get();
293	>	if (t != null) {
294	>	if (t instanceof Error)
295	>	throw (Error) t;
296	>	else if (t instanceof RuntimeException)
297	>	throw (RuntimeException) t;
298	>	else if (t instanceof Exception)
299	>	throw (Exception) t;
300	>	else {
301	>	AssertionFailedError afe =
302	>	new AssertionFailedError(t.toString());
303	>	afe.initCause(t);
304	>	throw afe;
305	>	}
306	>	}
307		}
308
309		/**
310	<	* Fail, also setting status to indicate current testcase should fail
311	<	*/
310	>	* Just like fail(reason), but additionally recording (using
311	>	* threadRecordFailure) any AssertionFailedError thrown, so that
312	>	* the current testcase will fail.
313	>	*/
314		public void threadFail(String reason) {
315	<	threadFailed = true;
316	<	fail(reason);
315	>	try {
316	>	fail(reason);
317	>	} catch (AssertionFailedError t) {
318	>	threadRecordFailure(t);
319	>	fail(reason);
320	>	}
321		}
322
323		/**
324	<	* If expression not true, set status to indicate current testcase
325	<	* should fail
326	<	*/
324	>	* Just like assertTrue(b), but additionally recording (using
325	>	* threadRecordFailure) any AssertionFailedError thrown, so that
326	>	* the current testcase will fail.
327	>	*/
328		public void threadAssertTrue(boolean b) {
329	<	if (!b) {
206	<	threadFailed = true;
329	>	try {
330		assertTrue(b);
331	+	} catch (AssertionFailedError t) {
332	+	threadRecordFailure(t);
333	+	throw t;
334		}
335		}
336
337		/**
338	<	* If expression not false, set status to indicate current testcase
339	<	* should fail
340	<	*/
338	>	* Just like assertFalse(b), but additionally recording (using
339	>	* threadRecordFailure) any AssertionFailedError thrown, so that
340	>	* the current testcase will fail.
341	>	*/
342		public void threadAssertFalse(boolean b) {
343	<	if (b) {
217	<	threadFailed = true;
343	>	try {
344		assertFalse(b);
345	+	} catch (AssertionFailedError t) {
346	+	threadRecordFailure(t);
347	+	throw t;
348		}
349		}
350
351		/**
352	<	* If argument not null, set status to indicate current testcase
353	<	* should fail
354	<	*/
352	>	* Just like assertNull(x), but additionally recording (using
353	>	* threadRecordFailure) any AssertionFailedError thrown, so that
354	>	* the current testcase will fail.
355	>	*/
356		public void threadAssertNull(Object x) {
357	<	if (x != null) {
228	<	threadFailed = true;
357	>	try {
358		assertNull(x);
359	+	} catch (AssertionFailedError t) {
360	+	threadRecordFailure(t);
361	+	throw t;
362		}
363		}
364
365		/**
366	<	* If arguments not equal, set status to indicate current testcase
367	<	* should fail
368	<	*/
366	>	* Just like assertEquals(x, y), but additionally recording (using
367	>	* threadRecordFailure) any AssertionFailedError thrown, so that
368	>	* the current testcase will fail.
369	>	*/
370		public void threadAssertEquals(long x, long y) {
371	<	if (x != y) {
239	<	threadFailed = true;
371	>	try {
372		assertEquals(x, y);
373	+	} catch (AssertionFailedError t) {
374	+	threadRecordFailure(t);
375	+	throw t;
376		}
377		}
378
379		/**
380	<	* If arguments not equal, set status to indicate current testcase
381	<	* should fail
382	<	*/
380	>	* Just like assertEquals(x, y), but additionally recording (using
381	>	* threadRecordFailure) any AssertionFailedError thrown, so that
382	>	* the current testcase will fail.
383	>	*/
384		public void threadAssertEquals(Object x, Object y) {
385	<	if (x != y && (x == null || !x.equals(y))) {
250	<	threadFailed = true;
385	>	try {
386		assertEquals(x, y);
387	+	} catch (AssertionFailedError t) {
388	+	threadRecordFailure(t);
389	+	throw t;
390	+	} catch (Throwable t) {
391	+	threadUnexpectedException(t);
392	+	}
393	+	}
394	+
395	+	/**
396	+	* Just like assertSame(x, y), but additionally recording (using
397	+	* threadRecordFailure) any AssertionFailedError thrown, so that
398	+	* the current testcase will fail.
399	+	*/
400	+	public void threadAssertSame(Object x, Object y) {
401	+	try {
402	+	assertSame(x, y);
403	+	} catch (AssertionFailedError t) {
404	+	threadRecordFailure(t);
405	+	throw t;
406		}
407		}
408
409		/**
410	<	* threadFail with message "should throw exception"
411	<	*/
410	>	* Calls threadFail with message "should throw exception".
411	>	*/
412		public void threadShouldThrow() {
413	<	threadFailed = true;
260	<	fail("should throw exception");
413	>	threadFail("should throw exception");
414		}
415
416		/**
417	<	* threadFail with message "Unexpected exception"
417	>	* Calls threadFail with message "should throw" + exceptionName.
418		*/
419	<	public void threadUnexpectedException() {
420	<	threadFailed = true;
268	<	fail("Unexpected exception");
419	>	public void threadShouldThrow(String exceptionName) {
420	>	threadFail("should throw " + exceptionName);
421		}
422
423	+	/**
424	+	* Records the given exception using {@link #threadRecordFailure},
425	+	* then rethrows the exception, wrapping it in an
426	+	* AssertionFailedError if necessary.
427	+	*/
428	+	public void threadUnexpectedException(Throwable t) {
429	+	threadRecordFailure(t);
430	+	t.printStackTrace();
431	+	if (t instanceof RuntimeException)
432	+	throw (RuntimeException) t;
433	+	else if (t instanceof Error)
434	+	throw (Error) t;
435	+	else {
436	+	AssertionFailedError afe =
437	+	new AssertionFailedError("unexpected exception: " + t);
438	+	t.initCause(t);
439	+	throw afe;
440	+	}
441	+	}
442
443		/**
444	<	* Wait out termination of a thread pool or fail doing so
444	>	* Waits out termination of a thread pool or fails doing so.
445		*/
446		public void joinPool(ExecutorService exec) {
447		try {
448		exec.shutdown();
449	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
450	<	} catch(InterruptedException ie) {
451	<	fail("Unexpected exception");
449	>	assertTrue("ExecutorService did not terminate in a timely manner",
450	>	exec.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
451	>	} catch (SecurityException ok) {
452	>	// Allowed in case test doesn't have privs
453	>	} catch (InterruptedException ie) {
454	>	fail("Unexpected InterruptedException");
455		}
456		}
457
458
459		/**
460	<	* fail with message "should throw exception"
461	<	*/
460	>	* Fails with message "should throw exception".
461	>	*/
462		public void shouldThrow() {
463		fail("Should throw exception");
464		}
465
466		/**
467	<	* fail with message "Unexpected exception"
467	>	* Fails with message "should throw " + exceptionName.
468		*/
469	<	public void unexpectedException() {
470	<	fail("Unexpected exception");
469	>	public void shouldThrow(String exceptionName) {
470	>	fail("Should throw " + exceptionName);
471		}
472
299	–
473		/**
474		* The number of elements to place in collections, arrays, etc.
475		*/
476	<	static final int SIZE = 20;
476	>	public static final int SIZE = 20;
477
478		// Some convenient Integer constants
479
480	<	static final Integer zero = new Integer(0);
481	<	static final Integer one = new Integer(1);
482	<	static final Integer two = new Integer(2);
483	<	static final Integer three  = new Integer(3);
484	<	static final Integer four  = new Integer(4);
485	<	static final Integer five  = new Integer(5);
486	<	static final Integer six = new Integer(6);
487	<	static final Integer seven = new Integer(7);
488	<	static final Integer eight = new Integer(8);
489	<	static final Integer nine = new Integer(9);
490	<	static final Integer m1  = new Integer(-1);
491	<	static final Integer m2  = new Integer(-2);
492	<	static final Integer m3  = new Integer(-3);
493	<	static final Integer m4 = new Integer(-4);
494	<	static final Integer m5 = new Integer(-5);
495	<	static final Integer m10 = new Integer(-10);
480	>	public static final Integer zero  = new Integer(0);
481	>	public static final Integer one   = new Integer(1);
482	>	public static final Integer two   = new Integer(2);
483	>	public static final Integer three = new Integer(3);
484	>	public static final Integer four  = new Integer(4);
485	>	public static final Integer five  = new Integer(5);
486	>	public static final Integer six   = new Integer(6);
487	>	public static final Integer seven = new Integer(7);
488	>	public static final Integer eight = new Integer(8);
489	>	public static final Integer nine  = new Integer(9);
490	>	public static final Integer m1  = new Integer(-1);
491	>	public static final Integer m2  = new Integer(-2);
492	>	public static final Integer m3  = new Integer(-3);
493	>	public static final Integer m4  = new Integer(-4);
494	>	public static final Integer m5  = new Integer(-5);
495	>	public static final Integer m6  = new Integer(-6);
496	>	public static final Integer m10 = new Integer(-10);
497
498
499		/**
500	+	* Runs Runnable r with a security policy that permits precisely
501	+	* the specified permissions.  If there is no current security
502	+	* manager, the runnable is run twice, both with and without a
503	+	* security manager.  We require that any security manager permit
504	+	* getPolicy/setPolicy.
505	+	*/
506	+	public void runWithPermissions(Runnable r, Permission... permissions) {
507	+	SecurityManager sm = System.getSecurityManager();
508	+	if (sm == null) {
509	+	r.run();
510	+	Policy savedPolicy = Policy.getPolicy();
511	+	try {
512	+	Policy.setPolicy(permissivePolicy());
513	+	System.setSecurityManager(new SecurityManager());
514	+	runWithPermissions(r, permissions);
515	+	} finally {
516	+	System.setSecurityManager(null);
517	+	Policy.setPolicy(savedPolicy);
518	+	}
519	+	} else {
520	+	Policy savedPolicy = Policy.getPolicy();
521	+	AdjustablePolicy policy = new AdjustablePolicy(permissions);
522	+	Policy.setPolicy(policy);
523	+
524	+	try {
525	+	r.run();
526	+	} finally {
527	+	policy.addPermission(new SecurityPermission("setPolicy"));
528	+	Policy.setPolicy(savedPolicy);
529	+	}
530	+	}
531	+	}
532	+
533	+	/**
534	+	* Runs a runnable without any permissions.
535	+	*/
536	+	public void runWithoutPermissions(Runnable r) {
537	+	runWithPermissions(r);
538	+	}
539	+
540	+	/**
541		* A security policy where new permissions can be dynamically added
542		* or all cleared.
543		*/
544	<	static class AdjustablePolicy extends java.security.Policy {
544	>	public static class AdjustablePolicy extends java.security.Policy {
545		Permissions perms = new Permissions();
546	<	AdjustablePolicy() { }
546	>	AdjustablePolicy(Permission... permissions) {
547	>	for (Permission permission : permissions)
548	>	perms.add(permission);
549	>	}
550		void addPermission(Permission perm) { perms.add(perm); }
551		void clearPermissions() { perms = new Permissions(); }
552	<	public PermissionCollection getPermissions(CodeSource cs) {
553	<	return perms;
554	<	}
555	<	public PermissionCollection getPermissions(ProtectionDomain pd) {
556	<	return perms;
557	<	}
558	<	public boolean implies(ProtectionDomain pd, Permission p) {
559	<	return perms.implies(p);
560	<	}
561	<	public void refresh() {}
552	>	public PermissionCollection getPermissions(CodeSource cs) {
553	>	return perms;
554	>	}
555	>	public PermissionCollection getPermissions(ProtectionDomain pd) {
556	>	return perms;
557	>	}
558	>	public boolean implies(ProtectionDomain pd, Permission p) {
559	>	return perms.implies(p);
560	>	}
561	>	public void refresh() {}
562		}
563
564	+	/**
565	+	* Returns a policy containing all the permissions we ever need.
566	+	*/
567	+	public static Policy permissivePolicy() {
568	+	return new AdjustablePolicy
569	+	// Permissions j.u.c. needs directly
570	+	(new RuntimePermission("modifyThread"),
571	+	new RuntimePermission("getClassLoader"),
572	+	new RuntimePermission("setContextClassLoader"),
573	+	// Permissions needed to change permissions!
574	+	new SecurityPermission("getPolicy"),
575	+	new SecurityPermission("setPolicy"),
576	+	new RuntimePermission("setSecurityManager"),
577	+	// Permissions needed by the junit test harness
578	+	new RuntimePermission("accessDeclaredMembers"),
579	+	new PropertyPermission("*", "read"),
580	+	new java.io.FilePermission("<<ALL FILES>>", "read"));
581	+	}
582
583	<	// Some convenient Runnable classes
584	<
585	<	static class NoOpRunnable implements Runnable {
586	<	public void run() {}
583	>	/**
584	>	* Sleeps until the given time has elapsed.
585	>	* Throws AssertionFailedError if interrupted.
586	>	*/
587	>	void sleep(long millis) {
588	>	try {
589	>	Thread.sleep(millis);
590	>	} catch (InterruptedException ie) {
591	>	AssertionFailedError afe =
592	>	new AssertionFailedError("Unexpected InterruptedException");
593	>	afe.initCause(ie);
594	>	throw afe;
595	>	}
596		}
597
598	<	static class NoOpCallable implements Callable {
599	<	public Object call() { return Boolean.TRUE; }
598	>	/**
599	>	* Sleeps until the timeout has elapsed, or interrupted.
600	>	* Does <em>NOT</em> throw InterruptedException.
601	>	*/
602	>	void sleepTillInterrupted(long timeoutMillis) {
603	>	try {
604	>	Thread.sleep(timeoutMillis);
605	>	} catch (InterruptedException wakeup) {}
606		}
607
608	<	class ShortRunnable implements Runnable {
609	<	public void run() {
610	<	try {
611	<	Thread.sleep(SHORT_DELAY_MS);
608	>	/**
609	>	* Waits up to the specified number of milliseconds for the given
610	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
611	>	*/
612	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
613	>	long timeoutNanos = timeoutMillis * 1000L * 1000L;
614	>	long t0 = System.nanoTime();
615	>	for (;;) {
616	>	Thread.State s = thread.getState();
617	>	if (s == Thread.State.BLOCKED ||
618	>	s == Thread.State.WAITING ||
619	>	s == Thread.State.TIMED_WAITING)
620	>	return;
621	>	else if (s == Thread.State.TERMINATED)
622	>	fail("Unexpected thread termination");
623	>	else if (System.nanoTime() - t0 > timeoutNanos) {
624	>	threadAssertTrue(thread.isAlive());
625	>	return;
626		}
627	<	catch(Exception e) {
628	<	threadUnexpectedException();
627	>	Thread.yield();
628	>	}
629	>	}
630	>
631	>	/**
632	>	* Returns the number of milliseconds since time given by
633	>	* startNanoTime, which must have been previously returned from a
634	>	* call to {@link System.nanoTime()}.
635	>	*/
636	>	long millisElapsedSince(long startNanoTime) {
637	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
638	>	}
639	>
640	>	/**
641	>	* Returns a new started daemon Thread running the given runnable.
642	>	*/
643	>	Thread newStartedThread(Runnable runnable) {
644	>	Thread t = new Thread(runnable);
645	>	t.setDaemon(true);
646	>	t.start();
647	>	return t;
648	>	}
649	>
650	>	/**
651	>	* Waits for the specified time (in milliseconds) for the thread
652	>	* to terminate (using {@link Thread#join(long)}), else interrupts
653	>	* the thread (in the hope that it may terminate later) and fails.
654	>	*/
655	>	void awaitTermination(Thread t, long timeoutMillis) {
656	>	try {
657	>	t.join(timeoutMillis);
658	>	} catch (InterruptedException ie) {
659	>	threadUnexpectedException(ie);
660	>	} finally {
661	>	if (t.isAlive()) {
662	>	t.interrupt();
663	>	fail("Test timed out");
664		}
665		}
666		}
667
668	<	class ShortInterruptedRunnable implements Runnable {
669	<	public void run() {
668	>	// Some convenient Runnable classes
669	>
670	>	public abstract class CheckedRunnable implements Runnable {
671	>	protected abstract void realRun() throws Throwable;
672	>
673	>	public final void run() {
674		try {
675	<	Thread.sleep(SHORT_DELAY_MS);
676	<	threadShouldThrow();
677	<	}
374	<	catch(InterruptedException success) {
675	>	realRun();
676	>	} catch (Throwable t) {
677	>	threadUnexpectedException(t);
678		}
679		}
680		}
681
682	<	class SmallRunnable implements Runnable {
683	<	public void run() {
682	>	public abstract class RunnableShouldThrow implements Runnable {
683	>	protected abstract void realRun() throws Throwable;
684	>
685	>	final Class<?> exceptionClass;
686	>
687	>	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
688	>	this.exceptionClass = exceptionClass;
689	>	}
690	>
691	>	public final void run() {
692		try {
693	<	Thread.sleep(SMALL_DELAY_MS);
694	<	}
695	<	catch(Exception e) {
696	<	threadUnexpectedException();
693	>	realRun();
694	>	threadShouldThrow(exceptionClass.getSimpleName());
695	>	} catch (Throwable t) {
696	>	if (! exceptionClass.isInstance(t))
697	>	threadUnexpectedException(t);
698		}
699		}
700		}
701
702	<	class SmallPossiblyInterruptedRunnable implements Runnable {
703	<	public void run() {
702	>	public abstract class ThreadShouldThrow extends Thread {
703	>	protected abstract void realRun() throws Throwable;
704	>
705	>	final Class<?> exceptionClass;
706	>
707	>	<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) {
708	>	this.exceptionClass = exceptionClass;
709	>	}
710	>
711	>	public final void run() {
712		try {
713	<	Thread.sleep(SMALL_DELAY_MS);
714	<	}
715	<	catch(Exception e) {
713	>	realRun();
714	>	threadShouldThrow(exceptionClass.getSimpleName());
715	>	} catch (Throwable t) {
716	>	if (! exceptionClass.isInstance(t))
717	>	threadUnexpectedException(t);
718		}
719		}
720		}
721
722	<	class SmallCallable implements Callable {
723	<	public Object call() {
722	>	public abstract class CheckedInterruptedRunnable implements Runnable {
723	>	protected abstract void realRun() throws Throwable;
724	>
725	>	public final void run() {
726		try {
727	<	Thread.sleep(SMALL_DELAY_MS);
728	<	}
729	<	catch(Exception e) {
730	<	threadUnexpectedException();
727	>	realRun();
728	>	threadShouldThrow("InterruptedException");
729	>	} catch (InterruptedException success) {
730	>	} catch (Throwable t) {
731	>	threadUnexpectedException(t);
732		}
408	–	return Boolean.TRUE;
733		}
734		}
735
736	<	class SmallInterruptedRunnable implements Runnable {
737	<	public void run() {
736	>	public abstract class CheckedCallable<T> implements Callable<T> {
737	>	protected abstract T realCall() throws Throwable;
738	>
739	>	public final T call() {
740		try {
741	<	Thread.sleep(SMALL_DELAY_MS);
742	<	threadShouldThrow();
743	<	}
744	<	catch(InterruptedException success) {
741	>	return realCall();
742	>	} catch (Throwable t) {
743	>	threadUnexpectedException(t);
744	>	return null;
745		}
746		}
747		}
748
749	+	public abstract class CheckedInterruptedCallable<T>
750	+	implements Callable<T> {
751	+	protected abstract T realCall() throws Throwable;
752
753	<	class MediumRunnable implements Runnable {
425	<	public void run() {
753	>	public final T call() {
754		try {
755	<	Thread.sleep(MEDIUM_DELAY_MS);
756	<	}
757	<	catch(Exception e) {
758	<	threadUnexpectedException();
755	>	T result = realCall();
756	>	threadShouldThrow("InterruptedException");
757	>	return result;
758	>	} catch (InterruptedException success) {
759	>	} catch (Throwable t) {
760	>	threadUnexpectedException(t);
761		}
762	+	return null;
763		}
764		}
765
766	<	class MediumInterruptedRunnable implements Runnable {
767	<	public void run() {
766	>	public static class NoOpRunnable implements Runnable {
767	>	public void run() {}
768	>	}
769	>
770	>	public static class NoOpCallable implements Callable {
771	>	public Object call() { return Boolean.TRUE; }
772	>	}
773	>
774	>	public static final String TEST_STRING = "a test string";
775	>
776	>	public static class StringTask implements Callable<String> {
777	>	public String call() { return TEST_STRING; }
778	>	}
779	>
780	>	public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
781	>	return new CheckedCallable<String>() {
782	>	protected String realCall() {
783	>	try {
784	>	latch.await();
785	>	} catch (InterruptedException quittingTime) {}
786	>	return TEST_STRING;
787	>	}};
788	>	}
789	>
790	>	public static class NPETask implements Callable<String> {
791	>	public String call() { throw new NullPointerException(); }
792	>	}
793	>
794	>	public static class CallableOne implements Callable<Integer> {
795	>	public Integer call() { return one; }
796	>	}
797	>
798	>	public class ShortRunnable extends CheckedRunnable {
799	>	protected void realRun() throws Throwable {
800	>	Thread.sleep(SHORT_DELAY_MS);
801	>	}
802	>	}
803	>
804	>	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
805	>	protected void realRun() throws InterruptedException {
806	>	Thread.sleep(SHORT_DELAY_MS);
807	>	}
808	>	}
809	>
810	>	public class SmallRunnable extends CheckedRunnable {
811	>	protected void realRun() throws Throwable {
812	>	Thread.sleep(SMALL_DELAY_MS);
813	>	}
814	>	}
815	>
816	>	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
817	>	protected void realRun() {
818		try {
819	<	Thread.sleep(MEDIUM_DELAY_MS);
820	<	threadShouldThrow();
440	<	}
441	<	catch(InterruptedException success) {
442	<	}
819	>	Thread.sleep(SMALL_DELAY_MS);
820	>	} catch (InterruptedException ok) {}
821		}
822		}
823
824	<	class MediumPossiblyInterruptedRunnable implements Runnable {
825	<	public void run() {
824	>	public class SmallCallable extends CheckedCallable {
825	>	protected Object realCall() throws InterruptedException {
826	>	Thread.sleep(SMALL_DELAY_MS);
827	>	return Boolean.TRUE;
828	>	}
829	>	}
830	>
831	>	public class MediumRunnable extends CheckedRunnable {
832	>	protected void realRun() throws Throwable {
833	>	Thread.sleep(MEDIUM_DELAY_MS);
834	>	}
835	>	}
836	>
837	>	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
838	>	protected void realRun() throws InterruptedException {
839	>	Thread.sleep(MEDIUM_DELAY_MS);
840	>	}
841	>	}
842	>
843	>	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
844	>	return new CheckedRunnable() {
845	>	protected void realRun() {
846	>	try {
847	>	Thread.sleep(timeoutMillis);
848	>	} catch (InterruptedException ok) {}
849	>	}};
850	>	}
851	>
852	>	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
853	>	protected void realRun() {
854		try {
855		Thread.sleep(MEDIUM_DELAY_MS);
856	<	}
857	<	catch(InterruptedException success) {
858	<	}
856	>	} catch (InterruptedException ok) {}
857	>	}
858	>	}
859	>
860	>	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
861	>	protected void realRun() {
862	>	try {
863	>	Thread.sleep(LONG_DELAY_MS);
864	>	} catch (InterruptedException ok) {}
865		}
866		}
867
868		/**
869		* For use as ThreadFactory in constructors
870		*/
871	<	static class SimpleThreadFactory implements ThreadFactory{
872	<	public Thread newThread(Runnable r){
871	>	public static class SimpleThreadFactory implements ThreadFactory {
872	>	public Thread newThread(Runnable r) {
873		return new Thread(r);
874	<	}
874	>	}
875		}
876
877	<	static class TrackedShortRunnable implements Runnable {
878	<	volatile boolean done = false;
877	>	public interface TrackedRunnable extends Runnable {
878	>	boolean isDone();
879	>	}
880	>
881	>	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
882	>	return new TrackedRunnable() {
883	>	private volatile boolean done = false;
884	>	public boolean isDone() { return done; }
885	>	public void run() {
886	>	try {
887	>	Thread.sleep(timeoutMillis);
888	>	done = true;
889	>	} catch (InterruptedException ok) {}
890	>	}
891	>	};
892	>	}
893	>
894	>	public static class TrackedShortRunnable implements Runnable {
895	>	public volatile boolean done = false;
896	>	public void run() {
897	>	try {
898	>	Thread.sleep(SHORT_DELAY_MS);
899	>	done = true;
900	>	} catch (InterruptedException ok) {}
901	>	}
902	>	}
903	>
904	>	public static class TrackedSmallRunnable implements Runnable {
905	>	public volatile boolean done = false;
906		public void run() {
907		try {
908		Thread.sleep(SMALL_DELAY_MS);
909		done = true;
910	<	} catch(Exception e){
472	<	}
910	>	} catch (InterruptedException ok) {}
911		}
912		}
913
914	<	static class TrackedMediumRunnable implements Runnable {
915	<	volatile boolean done = false;
914	>	public static class TrackedMediumRunnable implements Runnable {
915	>	public volatile boolean done = false;
916		public void run() {
917		try {
918		Thread.sleep(MEDIUM_DELAY_MS);
919		done = true;
920	<	} catch(Exception e){
483	<	}
920	>	} catch (InterruptedException ok) {}
921		}
922		}
923
924	<	static class TrackedLongRunnable implements Runnable {
925	<	volatile boolean done = false;
924	>	public static class TrackedLongRunnable implements Runnable {
925	>	public volatile boolean done = false;
926		public void run() {
927		try {
928		Thread.sleep(LONG_DELAY_MS);
929		done = true;
930	<	} catch(Exception e){
494	<	}
930	>	} catch (InterruptedException ok) {}
931		}
932		}
933
934	<	static class TrackedNoOpRunnable implements Runnable {
935	<	volatile boolean done = false;
934	>	public static class TrackedNoOpRunnable implements Runnable {
935	>	public volatile boolean done = false;
936		public void run() {
937		done = true;
938		}
939		}
940
941	<	static class TrackedCallable implements Callable {
942	<	volatile boolean done = false;
941	>	public static class TrackedCallable implements Callable {
942	>	public volatile boolean done = false;
943		public Object call() {
944		try {
945		Thread.sleep(SMALL_DELAY_MS);
946		done = true;
947	<	} catch(Exception e){
512	<	}
947	>	} catch (InterruptedException ok) {}
948		return Boolean.TRUE;
949		}
950		}
951
952		/**
953	+	* Analog of CheckedRunnable for RecursiveAction
954	+	*/
955	+	public abstract class CheckedRecursiveAction extends RecursiveAction {
956	+	protected abstract void realCompute() throws Throwable;
957	+
958	+	public final void compute() {
959	+	try {
960	+	realCompute();
961	+	} catch (Throwable t) {
962	+	threadUnexpectedException(t);
963	+	}
964	+	}
965	+	}
966	+
967	+	/**
968	+	* Analog of CheckedCallable for RecursiveTask
969	+	*/
970	+	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
971	+	protected abstract T realCompute() throws Throwable;
972	+
973	+	public final T compute() {
974	+	try {
975	+	return realCompute();
976	+	} catch (Throwable t) {
977	+	threadUnexpectedException(t);
978	+	return null;
979	+	}
980	+	}
981	+	}
982	+
983	+	/**
984		* For use as RejectedExecutionHandler in constructors
985		*/
986	<	static class NoOpREHandler implements RejectedExecutionHandler{
987	<	public void rejectedExecution(Runnable r, ThreadPoolExecutor executor){}
986	>	public static class NoOpREHandler implements RejectedExecutionHandler {
987	>	public void rejectedExecution(Runnable r,
988	>	ThreadPoolExecutor executor) {}
989		}
990	<
991	<
990	>
991	>	/**
992	>	* A CyclicBarrier that fails with AssertionFailedErrors instead
993	>	* of throwing checked exceptions.
994	>	*/
995	>	public class CheckedBarrier extends CyclicBarrier {
996	>	public CheckedBarrier(int parties) { super(parties); }
997	>
998	>	public int await() {
999	>	try {
1000	>	return super.await();
1001	>	} catch (Exception e) {
1002	>	AssertionFailedError afe =
1003	>	new AssertionFailedError("Unexpected exception: " + e);
1004	>	afe.initCause(e);
1005	>	throw afe;
1006	>	}
1007	>	}
1008	>	}
1009	>
1010		}

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