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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.31 by dl, Sun Apr 13 14:16:25 2008 UTC vs.
Revision 1.155 by jsr166, Sat Oct 3 19:59:49 2015 UTC

#	Line 1 | Line 1
1		/*
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
4	>	* http://creativecommons.org/publicdomain/zero/1.0/
5		* Other contributors include Andrew Wright, Jeffrey Hayes,
6		* Pat Fisher, Mike Judd.
7		*/
8
9	<	import junit.framework.*;
10	<	import java.util.*;
11	<	import java.util.concurrent.*;
12	<	import java.io.*;
13	<	import java.security.*;
9	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
10	>	import static java.util.concurrent.TimeUnit.NANOSECONDS;
11	>
12	>	import java.io.ByteArrayInputStream;
13	>	import java.io.ByteArrayOutputStream;
14	>	import java.io.ObjectInputStream;
15	>	import java.io.ObjectOutputStream;
16	>	import java.lang.management.ManagementFactory;
17	>	import java.lang.management.ThreadInfo;
18	>	import java.lang.management.ThreadMXBean;
19	>	import java.lang.reflect.Constructor;
20	>	import java.lang.reflect.Method;
21	>	import java.lang.reflect.Modifier;
22	>	import java.security.CodeSource;
23	>	import java.security.Permission;
24	>	import java.security.PermissionCollection;
25	>	import java.security.Permissions;
26	>	import java.security.Policy;
27	>	import java.security.ProtectionDomain;
28	>	import java.security.SecurityPermission;
29	>	import java.util.ArrayList;
30	>	import java.util.Arrays;
31	>	import java.util.Date;
32	>	import java.util.Enumeration;
33	>	import java.util.Iterator;
34	>	import java.util.List;
35	>	import java.util.NoSuchElementException;
36	>	import java.util.PropertyPermission;
37	>	import java.util.concurrent.BlockingQueue;
38	>	import java.util.concurrent.Callable;
39	>	import java.util.concurrent.CountDownLatch;
40	>	import java.util.concurrent.CyclicBarrier;
41	>	import java.util.concurrent.ExecutionException;
42	>	import java.util.concurrent.Executors;
43	>	import java.util.concurrent.ExecutorService;
44	>	import java.util.concurrent.ForkJoinPool;
45	>	import java.util.concurrent.Future;
46	>	import java.util.concurrent.RecursiveAction;
47	>	import java.util.concurrent.RecursiveTask;
48	>	import java.util.concurrent.RejectedExecutionHandler;
49	>	import java.util.concurrent.Semaphore;
50	>	import java.util.concurrent.ThreadFactory;
51	>	import java.util.concurrent.ThreadPoolExecutor;
52	>	import java.util.concurrent.TimeoutException;
53	>	import java.util.concurrent.atomic.AtomicReference;
54	>	import java.util.regex.Pattern;
55	>
56	>	import junit.framework.AssertionFailedError;
57	>	import junit.framework.Test;
58	>	import junit.framework.TestCase;
59	>	import junit.framework.TestResult;
60	>	import junit.framework.TestSuite;
61
62		/**
63		* Base class for JSR166 Junit TCK tests.  Defines some constants,
#	Line 22 | Line 69 | import java.security.*;
69		*
70		* <ol>
71		*
72	<	* <li> All assertions in code running in generated threads must use
72	>	* <li>All assertions in code running in generated threads must use
73		* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
74		* #threadAssertEquals}, or {@link #threadAssertNull}, (not
75	<	* <tt>fail</tt>, <tt>assertTrue</tt>, etc.) It is OK (but not
75	>	* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
76		* particularly recommended) for other code to use these forms too.
77		* Only the most typically used JUnit assertion methods are defined
78	<	* this way, but enough to live with.</li>
78	>	* this way, but enough to live with.
79		*
80	<	* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
81	<	* to invoke <tt>super.setUp</tt> and <tt>super.tearDown</tt> within
80	>	* <li>If you override {@link #setUp} or {@link #tearDown}, make sure
81	>	* to invoke {@code super.setUp} and {@code super.tearDown} within
82		* them. These methods are used to clear and check for thread
83	<	* assertion failures.</li>
83	>	* assertion failures.
84		*
85	<	* <li>All delays and timeouts must use one of the constants <tt>
86	<	* SHORT_DELAY_MS</tt>, <tt> SMALL_DELAY_MS</tt>, <tt> MEDIUM_DELAY_MS</tt>,
87	<	* <tt> LONG_DELAY_MS</tt>. The idea here is that a SHORT is always
85	>	* <li>All delays and timeouts must use one of the constants {@code
86	>	* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
87	>	* {@code LONG_DELAY_MS}. The idea here is that a SHORT is always
88		* discriminable from zero time, and always allows enough time for the
89		* small amounts of computation (creating a thread, calling a few
90		* methods, etc) needed to reach a timeout point. Similarly, a SMALL
91		* is always discriminable as larger than SHORT and smaller than
92		* MEDIUM.  And so on. These constants are set to conservative values,
93		* but even so, if there is ever any doubt, they can all be increased
94	<	* in one spot to rerun tests on slower platforms.</li>
94	>	* in one spot to rerun tests on slower platforms.
95		*
96	<	* <li> All threads generated must be joined inside each test case
97	<	* method (or <tt>fail</tt> to do so) before returning from the
98	<	* method. The <tt> joinPool</tt> method can be used to do this when
99	<	* using Executors.</li>
96	>	* <li>All threads generated must be joined inside each test case
97	>	* method (or {@code fail} to do so) before returning from the
98	>	* method. The {@code joinPool} method can be used to do this when
99	>	* using Executors.
100		*
101		* </ol>
102		*
103	<	* <p> <b>Other notes</b>
103	>	* <p><b>Other notes</b>
104		* <ul>
105		*
106	<	* <li> Usually, there is one testcase method per JSR166 method
106	>	* <li>Usually, there is one testcase method per JSR166 method
107		* covering "normal" operation, and then as many exception-testing
108		* methods as there are exceptions the method can throw. Sometimes
109		* there are multiple tests per JSR166 method when the different
110		* "normal" behaviors differ significantly. And sometimes testcases
111		* cover multiple methods when they cannot be tested in
112	<	* isolation.</li>
112	>	* isolation.
113		*
114	<	* <li> The documentation style for testcases is to provide as javadoc
114	>	* <li>The documentation style for testcases is to provide as javadoc
115		* a simple sentence or two describing the property that the testcase
116		* method purports to test. The javadocs do not say anything about how
117	<	* the property is tested. To find out, read the code.</li>
117	>	* the property is tested. To find out, read the code.
118		*
119	<	* <li> These tests are "conformance tests", and do not attempt to
119	>	* <li>These tests are "conformance tests", and do not attempt to
120		* test throughput, latency, scalability or other performance factors
121		* (see the separate "jtreg" tests for a set intended to check these
122		* for the most central aspects of functionality.) So, most tests use
123		* the smallest sensible numbers of threads, collection sizes, etc
124	<	* needed to check basic conformance.</li>
124	>	* needed to check basic conformance.
125		*
126		* <li>The test classes currently do not declare inclusion in
127		* any particular package to simplify things for people integrating
128	<	* them in TCK test suites.</li>
128	>	* them in TCK test suites.
129		*
130	<	* <li> As a convenience, the <tt>main</tt> of this class (JSR166TestCase)
131	<	* runs all JSR166 unit tests.</li>
130	>	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
131	>	* runs all JSR166 unit tests.
132		*
133		* </ul>
134		*/
135		public class JSR166TestCase extends TestCase {
136	+	private static final boolean useSecurityManager =
137	+	Boolean.getBoolean("jsr166.useSecurityManager");
138	+
139	+	protected static final boolean expensiveTests =
140	+	Boolean.getBoolean("jsr166.expensiveTests");
141	+
142		/**
143	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
143	>	* If true, also run tests that are not part of the official tck
144	>	* because they test unspecified implementation details.
145		*/
146	<	public static void main (String[] args) {
147	<	int iters = 1;
148	<	if (args.length > 0)
149	<	iters = Integer.parseInt(args[0]);
150	<	Test s = suite();
151	<	for (int i = 0; i < iters; ++i) {
152	<	junit.textui.TestRunner.run (s);
153	<	System.gc();
154	<	System.runFinalization();
146	>	protected static final boolean testImplementationDetails =
147	>	Boolean.getBoolean("jsr166.testImplementationDetails");
148	>
149	>	/**
150	>	* If true, report on stdout all "slow" tests, that is, ones that
151	>	* take more than profileThreshold milliseconds to execute.
152	>	*/
153	>	private static final boolean profileTests =
154	>	Boolean.getBoolean("jsr166.profileTests");
155	>
156	>	/**
157	>	* The number of milliseconds that tests are permitted for
158	>	* execution without being reported, when profileTests is set.
159	>	*/
160	>	private static final long profileThreshold =
161	>	Long.getLong("jsr166.profileThreshold", 100);
162	>
163	>	/**
164	>	* The number of repetitions per test (for tickling rare bugs).
165	>	*/
166	>	private static final int runsPerTest =
167	>	Integer.getInteger("jsr166.runsPerTest", 1);
168	>
169	>	/**
170	>	* The number of repetitions of the test suite (for finding leaks?).
171	>	*/
172	>	private static final int suiteRuns =
173	>	Integer.getInteger("jsr166.suiteRuns", 1);
174	>
175	>	public JSR166TestCase() { super(); }
176	>	public JSR166TestCase(String name) { super(name); }
177	>
178	>	/**
179	>	* A filter for tests to run, matching strings of the form
180	>	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
181	>	* Usefully combined with jsr166.runsPerTest.
182	>	*/
183	>	private static final Pattern methodFilter = methodFilter();
184	>
185	>	private static Pattern methodFilter() {
186	>	String regex = System.getProperty("jsr166.methodFilter");
187	>	return (regex == null) ? null : Pattern.compile(regex);
188	>	}
189	>
190	>	public void runBare() throws Throwable {
191	>	if (methodFilter == null
192	>	|| methodFilter.matcher(toString()).find())
193	>	super.runBare();
194	>	}
195	>
196	>	protected void runTest() throws Throwable {
197	>	for (int i = 0; i < runsPerTest; i++) {
198	>	if (profileTests)
199	>	runTestProfiled();
200	>	else
201	>	super.runTest();
202	>	}
203	>	}
204	>
205	>	protected void runTestProfiled() throws Throwable {
206	>	for (int i = 0; i < 2; i++) {
207	>	long startTime = System.nanoTime();
208	>	super.runTest();
209	>	long elapsedMillis = millisElapsedSince(startTime);
210	>	if (elapsedMillis < profileThreshold)
211	>	break;
212	>	// Never report first run of any test; treat it as a
213	>	// warmup run, notably to trigger all needed classloading,
214	>	if (i > 0)
215	>	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
216		}
102	–	System.exit(0);
217		}
218
219		/**
220	<	* Collects all JSR166 unit tests as one suite
220	>	* Runs all JSR166 unit tests using junit.textui.TestRunner.
221		*/
222	<	public static Test suite ( ) {
223	<	TestSuite suite = new TestSuite("JSR166 Unit Tests");
222	>	public static void main(String[] args) {
223	>	main(suite(), args);
224	>	}
225
226	<	suite.addTest(new TestSuite(AbstractExecutorServiceTest.class));
227	<	suite.addTest(new TestSuite(AbstractQueueTest.class));
228	<	suite.addTest(new TestSuite(AbstractQueuedSynchronizerTest.class));
229	<	suite.addTest(new TestSuite(AbstractQueuedLongSynchronizerTest.class));
230	<	suite.addTest(new TestSuite(ArrayBlockingQueueTest.class));
231	<	suite.addTest(new TestSuite(ArrayDequeTest.class));
232	<	suite.addTest(new TestSuite(AtomicBooleanTest.class));
233	<	suite.addTest(new TestSuite(AtomicIntegerArrayTest.class));
234	<	suite.addTest(new TestSuite(AtomicIntegerFieldUpdaterTest.class));
235	<	suite.addTest(new TestSuite(AtomicIntegerTest.class));
236	<	suite.addTest(new TestSuite(AtomicLongArrayTest.class));
237	<	suite.addTest(new TestSuite(AtomicLongFieldUpdaterTest.class));
238	<	suite.addTest(new TestSuite(AtomicLongTest.class));
239	<	suite.addTest(new TestSuite(AtomicMarkableReferenceTest.class));
240	<	suite.addTest(new TestSuite(AtomicReferenceArrayTest.class));
241	<	suite.addTest(new TestSuite(AtomicReferenceFieldUpdaterTest.class));
242	<	suite.addTest(new TestSuite(AtomicReferenceTest.class));
243	<	suite.addTest(new TestSuite(AtomicStampedReferenceTest.class));
129	<	suite.addTest(new TestSuite(ConcurrentHashMapTest.class));
130	<	suite.addTest(new TestSuite(ConcurrentLinkedQueueTest.class));
131	<	suite.addTest(new TestSuite(ConcurrentSkipListMapTest.class));
132	<	suite.addTest(new TestSuite(ConcurrentSkipListSubMapTest.class));
133	<	suite.addTest(new TestSuite(ConcurrentSkipListSetTest.class));
134	<	suite.addTest(new TestSuite(ConcurrentSkipListSubSetTest.class));
135	<	suite.addTest(new TestSuite(CopyOnWriteArrayListTest.class));
136	<	suite.addTest(new TestSuite(CopyOnWriteArraySetTest.class));
137	<	suite.addTest(new TestSuite(CountDownLatchTest.class));
138	<	suite.addTest(new TestSuite(CyclicBarrierTest.class));
139	<	suite.addTest(new TestSuite(DelayQueueTest.class));
140	<	suite.addTest(new TestSuite(EntryTest.class));
141	<	suite.addTest(new TestSuite(ExchangerTest.class));
142	<	suite.addTest(new TestSuite(ExecutorsTest.class));
143	<	suite.addTest(new TestSuite(ExecutorCompletionServiceTest.class));
144	<	suite.addTest(new TestSuite(FutureTaskTest.class));
145	<	suite.addTest(new TestSuite(LinkedBlockingDequeTest.class));
146	<	suite.addTest(new TestSuite(LinkedBlockingQueueTest.class));
147	<	suite.addTest(new TestSuite(LinkedListTest.class));
148	<	suite.addTest(new TestSuite(LockSupportTest.class));
149	<	suite.addTest(new TestSuite(PriorityBlockingQueueTest.class));
150	<	suite.addTest(new TestSuite(PriorityQueueTest.class));
151	<	suite.addTest(new TestSuite(ReentrantLockTest.class));
152	<	suite.addTest(new TestSuite(ReentrantReadWriteLockTest.class));
153	<	suite.addTest(new TestSuite(ScheduledExecutorTest.class));
154	<	suite.addTest(new TestSuite(ScheduledExecutorSubclassTest.class));
155	<	suite.addTest(new TestSuite(SemaphoreTest.class));
156	<	suite.addTest(new TestSuite(SynchronousQueueTest.class));
157	<	suite.addTest(new TestSuite(SystemTest.class));
158	<	suite.addTest(new TestSuite(ThreadLocalTest.class));
159	<	suite.addTest(new TestSuite(ThreadPoolExecutorTest.class));
160	<	suite.addTest(new TestSuite(ThreadPoolExecutorSubclassTest.class));
161	<	suite.addTest(new TestSuite(ThreadTest.class));
162	<	suite.addTest(new TestSuite(TimeUnitTest.class));
163	<	suite.addTest(new TestSuite(TreeMapTest.class));
164	<	suite.addTest(new TestSuite(TreeSetTest.class));
165	<	suite.addTest(new TestSuite(TreeSubMapTest.class));
166	<	suite.addTest(new TestSuite(TreeSubSetTest.class));
226	>	/**
227	>	* Runs all unit tests in the given test suite.
228	>	* Actual behavior influenced by jsr166.* system properties.
229	>	*/
230	>	static void main(Test suite, String[] args) {
231	>	if (useSecurityManager) {
232	>	System.err.println("Setting a permissive security manager");
233	>	Policy.setPolicy(permissivePolicy());
234	>	System.setSecurityManager(new SecurityManager());
235	>	}
236	>	for (int i = 0; i < suiteRuns; i++) {
237	>	TestResult result = junit.textui.TestRunner.run(suite);
238	>	if (!result.wasSuccessful())
239	>	System.exit(1);
240	>	System.gc();
241	>	System.runFinalization();
242	>	}
243	>	}
244
245	+	public static TestSuite newTestSuite(Object... suiteOrClasses) {
246	+	TestSuite suite = new TestSuite();
247	+	for (Object suiteOrClass : suiteOrClasses) {
248	+	if (suiteOrClass instanceof TestSuite)
249	+	suite.addTest((TestSuite) suiteOrClass);
250	+	else if (suiteOrClass instanceof Class)
251	+	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
252	+	else
253	+	throw new ClassCastException("not a test suite or class");
254	+	}
255		return suite;
256		}
257
258	+	public static void addNamedTestClasses(TestSuite suite,
259	+	String... testClassNames) {
260	+	for (String testClassName : testClassNames) {
261	+	try {
262	+	Class<?> testClass = Class.forName(testClassName);
263	+	Method m = testClass.getDeclaredMethod("suite",
264	+	new Class<?>[0]);
265	+	suite.addTest(newTestSuite((Test)m.invoke(null)));
266	+	} catch (Exception e) {
267	+	throw new Error("Missing test class", e);
268	+	}
269	+	}
270	+	}
271	+
272	+	public static final double JAVA_CLASS_VERSION;
273	+	public static final String JAVA_SPECIFICATION_VERSION;
274	+	static {
275	+	try {
276	+	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
277	+	new java.security.PrivilegedAction<Double>() {
278	+	public Double run() {
279	+	return Double.valueOf(System.getProperty("java.class.version"));}});
280	+	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
281	+	new java.security.PrivilegedAction<String>() {
282	+	public String run() {
283	+	return System.getProperty("java.specification.version");}});
284	+	} catch (Throwable t) {
285	+	throw new Error(t);
286	+	}
287	+	}
288	+
289	+	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
290	+	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
291	+	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
292	+	public static boolean atLeastJava9() {
293	+	return JAVA_CLASS_VERSION >= 53.0
294	+	// As of 2015-09, java9 still uses 52.0 class file version
295	+	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?(9|[0-9][0-9])$");
296	+	}
297	+	public static boolean atLeastJava10() {
298	+	return JAVA_CLASS_VERSION >= 54.0
299	+	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?[0-9][0-9]$");
300	+	}
301	+
302	+	/**
303	+	* Collects all JSR166 unit tests as one suite.
304	+	*/
305	+	public static Test suite() {
306	+	// Java7+ test classes
307	+	TestSuite suite = newTestSuite(
308	+	ForkJoinPoolTest.suite(),
309	+	ForkJoinTaskTest.suite(),
310	+	RecursiveActionTest.suite(),
311	+	RecursiveTaskTest.suite(),
312	+	LinkedTransferQueueTest.suite(),
313	+	PhaserTest.suite(),
314	+	ThreadLocalRandomTest.suite(),
315	+	AbstractExecutorServiceTest.suite(),
316	+	AbstractQueueTest.suite(),
317	+	AbstractQueuedSynchronizerTest.suite(),
318	+	AbstractQueuedLongSynchronizerTest.suite(),
319	+	ArrayBlockingQueueTest.suite(),
320	+	ArrayDequeTest.suite(),
321	+	AtomicBooleanTest.suite(),
322	+	AtomicIntegerArrayTest.suite(),
323	+	AtomicIntegerFieldUpdaterTest.suite(),
324	+	AtomicIntegerTest.suite(),
325	+	AtomicLongArrayTest.suite(),
326	+	AtomicLongFieldUpdaterTest.suite(),
327	+	AtomicLongTest.suite(),
328	+	AtomicMarkableReferenceTest.suite(),
329	+	AtomicReferenceArrayTest.suite(),
330	+	AtomicReferenceFieldUpdaterTest.suite(),
331	+	AtomicReferenceTest.suite(),
332	+	AtomicStampedReferenceTest.suite(),
333	+	ConcurrentHashMapTest.suite(),
334	+	ConcurrentLinkedDequeTest.suite(),
335	+	ConcurrentLinkedQueueTest.suite(),
336	+	ConcurrentSkipListMapTest.suite(),
337	+	ConcurrentSkipListSubMapTest.suite(),
338	+	ConcurrentSkipListSetTest.suite(),
339	+	ConcurrentSkipListSubSetTest.suite(),
340	+	CopyOnWriteArrayListTest.suite(),
341	+	CopyOnWriteArraySetTest.suite(),
342	+	CountDownLatchTest.suite(),
343	+	CyclicBarrierTest.suite(),
344	+	DelayQueueTest.suite(),
345	+	EntryTest.suite(),
346	+	ExchangerTest.suite(),
347	+	ExecutorsTest.suite(),
348	+	ExecutorCompletionServiceTest.suite(),
349	+	FutureTaskTest.suite(),
350	+	LinkedBlockingDequeTest.suite(),
351	+	LinkedBlockingQueueTest.suite(),
352	+	LinkedListTest.suite(),
353	+	LockSupportTest.suite(),
354	+	PriorityBlockingQueueTest.suite(),
355	+	PriorityQueueTest.suite(),
356	+	ReentrantLockTest.suite(),
357	+	ReentrantReadWriteLockTest.suite(),
358	+	ScheduledExecutorTest.suite(),
359	+	ScheduledExecutorSubclassTest.suite(),
360	+	SemaphoreTest.suite(),
361	+	SynchronousQueueTest.suite(),
362	+	SystemTest.suite(),
363	+	ThreadLocalTest.suite(),
364	+	ThreadPoolExecutorTest.suite(),
365	+	ThreadPoolExecutorSubclassTest.suite(),
366	+	ThreadTest.suite(),
367	+	TimeUnitTest.suite(),
368	+	TreeMapTest.suite(),
369	+	TreeSetTest.suite(),
370	+	TreeSubMapTest.suite(),
371	+	TreeSubSetTest.suite());
372	+
373	+	// Java8+ test classes
374	+	if (atLeastJava8()) {
375	+	String[] java8TestClassNames = {
376	+	"Atomic8Test",
377	+	"CompletableFutureTest",
378	+	"ConcurrentHashMap8Test",
379	+	"CountedCompleterTest",
380	+	"DoubleAccumulatorTest",
381	+	"DoubleAdderTest",
382	+	"ForkJoinPool8Test",
383	+	"ForkJoinTask8Test",
384	+	"LongAccumulatorTest",
385	+	"LongAdderTest",
386	+	"SplittableRandomTest",
387	+	"StampedLockTest",
388	+	"SubmissionPublisherTest",
389	+	"ThreadLocalRandom8Test",
390	+	};
391	+	addNamedTestClasses(suite, java8TestClassNames);
392	+	}
393	+
394	+	// Java9+ test classes
395	+	if (atLeastJava9()) {
396	+	String[] java9TestClassNames = {
397	+	// Currently empty, but expecting varhandle tests
398	+	};
399	+	addNamedTestClasses(suite, java9TestClassNames);
400	+	}
401	+
402	+	return suite;
403	+	}
404	+
405	+	/** Returns list of junit-style test method names in given class. */
406	+	public static ArrayList<String> testMethodNames(Class<?> testClass) {
407	+	Method[] methods = testClass.getDeclaredMethods();
408	+	ArrayList<String> names = new ArrayList<String>(methods.length);
409	+	for (Method method : methods) {
410	+	if (method.getName().startsWith("test")
411	+	&& Modifier.isPublic(method.getModifiers())
412	+	// method.getParameterCount() requires jdk8+
413	+	&& method.getParameterTypes().length == 0) {
414	+	names.add(method.getName());
415	+	}
416	+	}
417	+	return names;
418	+	}
419	+
420	+	/**
421	+	* Returns junit-style testSuite for the given test class, but
422	+	* parameterized by passing extra data to each test.
423	+	*/
424	+	public static <ExtraData> Test parameterizedTestSuite
425	+	(Class<? extends JSR166TestCase> testClass,
426	+	Class<ExtraData> dataClass,
427	+	ExtraData data) {
428	+	try {
429	+	TestSuite suite = new TestSuite();
430	+	Constructor c =
431	+	testClass.getDeclaredConstructor(dataClass, String.class);
432	+	for (String methodName : testMethodNames(testClass))
433	+	suite.addTest((Test) c.newInstance(data, methodName));
434	+	return suite;
435	+	} catch (Exception e) {
436	+	throw new Error(e);
437	+	}
438	+	}
439	+
440	+	/**
441	+	* Returns junit-style testSuite for the jdk8 extension of the
442	+	* given test class, but parameterized by passing extra data to
443	+	* each test.  Uses reflection to allow compilation in jdk7.
444	+	*/
445	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
446	+	(Class<? extends JSR166TestCase> testClass,
447	+	Class<ExtraData> dataClass,
448	+	ExtraData data) {
449	+	if (atLeastJava8()) {
450	+	String name = testClass.getName();
451	+	String name8 = name.replaceAll("Test$", "8Test");
452	+	if (name.equals(name8)) throw new Error(name);
453	+	try {
454	+	return (Test)
455	+	Class.forName(name8)
456	+	.getMethod("testSuite", new Class[] { dataClass })
457	+	.invoke(null, data);
458	+	} catch (Exception e) {
459	+	throw new Error(e);
460	+	}
461	+	} else {
462	+	return new TestSuite();
463	+	}
464	+	}
465	+
466	+	// Delays for timing-dependent tests, in milliseconds.
467
468		public static long SHORT_DELAY_MS;
469		public static long SMALL_DELAY_MS;
470		public static long MEDIUM_DELAY_MS;
471		public static long LONG_DELAY_MS;
472
177	–
473		/**
474		* Returns the shortest timed delay. This could
475		* be reimplemented to use for example a Property.
#	Line 183 | Line 478 | public class JSR166TestCase extends Test
478		return 50;
479		}
480
186	–
481		/**
482		* Sets delays as multiples of SHORT_DELAY.
483		*/
484	<	protected  void setDelays() {
484	>	protected void setDelays() {
485		SHORT_DELAY_MS = getShortDelay();
486	<	SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
486	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
487		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
488	<	LONG_DELAY_MS = SHORT_DELAY_MS * 50;
488	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
489		}
490
491		/**
492	<	* Flag set true if any threadAssert methods fail
492	>	* Returns a timeout in milliseconds to be used in tests that
493	>	* verify that operations block or time out.
494		*/
495	<	volatile boolean threadFailed;
495	>	long timeoutMillis() {
496	>	return SHORT_DELAY_MS / 4;
497	>	}
498	>
499	>	/**
500	>	* Returns a new Date instance representing a time at least
501	>	* delayMillis milliseconds in the future.
502	>	*/
503	>	Date delayedDate(long delayMillis) {
504	>	// Add 1 because currentTimeMillis is known to round into the past.
505	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
506	>	}
507
508		/**
509	<	* Initializes test to indicate that no thread assertions have failed
509	>	* The first exception encountered if any threadAssertXXX method fails.
510		*/
511	+	private final AtomicReference<Throwable> threadFailure
512	+	= new AtomicReference<Throwable>(null);
513	+
514	+	/**
515	+	* Records an exception so that it can be rethrown later in the test
516	+	* harness thread, triggering a test case failure.  Only the first
517	+	* failure is recorded; subsequent calls to this method from within
518	+	* the same test have no effect.
519	+	*/
520	+	public void threadRecordFailure(Throwable t) {
521	+	threadDump();
522	+	threadFailure.compareAndSet(null, t);
523	+	}
524	+
525		public void setUp() {
526		setDelays();
527	<	threadFailed = false;
527	>	}
528	>
529	>	void tearDownFail(String format, Object... args) {
530	>	String msg = toString() + ": " + String.format(format, args);
531	>	System.err.println(msg);
532	>	threadDump();
533	>	throw new AssertionFailedError(msg);
534		}
535
536		/**
537	<	* Triggers test case failure if any thread assertions have failed
537	>	* Extra checks that get done for all test cases.
538	>	*
539	>	* Triggers test case failure if any thread assertions have failed,
540	>	* by rethrowing, in the test harness thread, any exception recorded
541	>	* earlier by threadRecordFailure.
542	>	*
543	>	* Triggers test case failure if interrupt status is set in the main thread.
544		*/
545	<	public void tearDown() {
546	<	assertFalse(threadFailed);
545	>	public void tearDown() throws Exception {
546	>	Throwable t = threadFailure.getAndSet(null);
547	>	if (t != null) {
548	>	if (t instanceof Error)
549	>	throw (Error) t;
550	>	else if (t instanceof RuntimeException)
551	>	throw (RuntimeException) t;
552	>	else if (t instanceof Exception)
553	>	throw (Exception) t;
554	>	else {
555	>	AssertionFailedError afe =
556	>	new AssertionFailedError(t.toString());
557	>	afe.initCause(t);
558	>	throw afe;
559	>	}
560	>	}
561	>
562	>	if (Thread.interrupted())
563	>	tearDownFail("interrupt status set in main thread");
564	>
565	>	checkForkJoinPoolThreadLeaks();
566	>	}
567	>
568	>	/**
569	>	* Finds missing try { ... } finally { joinPool(e); }
570	>	*/
571	>	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
572	>	Thread[] survivors = new Thread[7];
573	>	int count = Thread.enumerate(survivors);
574	>	for (int i = 0; i < count; i++) {
575	>	Thread thread = survivors[i];
576	>	String name = thread.getName();
577	>	if (name.startsWith("ForkJoinPool-")) {
578	>	// give thread some time to terminate
579	>	thread.join(LONG_DELAY_MS);
580	>	if (thread.isAlive())
581	>	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
582	>	thread);
583	>	}
584	>	}
585	>
586	>	if (!ForkJoinPool.commonPool()
587	>	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
588	>	tearDownFail("ForkJoin common pool thread stuck");
589		}
590
591		/**
592	<	* Fail, also setting status to indicate current testcase should fail
592	>	* Just like fail(reason), but additionally recording (using
593	>	* threadRecordFailure) any AssertionFailedError thrown, so that
594	>	* the current testcase will fail.
595		*/
596		public void threadFail(String reason) {
597	<	threadFailed = true;
598	<	fail(reason);
597	>	try {
598	>	fail(reason);
599	>	} catch (AssertionFailedError t) {
600	>	threadRecordFailure(t);
601	>	throw t;
602	>	}
603		}
604
605		/**
606	<	* If expression not true, set status to indicate current testcase
607	<	* should fail
606	>	* Just like assertTrue(b), but additionally recording (using
607	>	* threadRecordFailure) any AssertionFailedError thrown, so that
608	>	* the current testcase will fail.
609		*/
610		public void threadAssertTrue(boolean b) {
611	<	if (!b) {
231	<	threadFailed = true;
611	>	try {
612		assertTrue(b);
613	+	} catch (AssertionFailedError t) {
614	+	threadRecordFailure(t);
615	+	throw t;
616		}
617		}
618
619		/**
620	<	* If expression not false, set status to indicate current testcase
621	<	* should fail
620	>	* Just like assertFalse(b), but additionally recording (using
621	>	* threadRecordFailure) any AssertionFailedError thrown, so that
622	>	* the current testcase will fail.
623		*/
624		public void threadAssertFalse(boolean b) {
625	<	if (b) {
242	<	threadFailed = true;
625	>	try {
626		assertFalse(b);
627	+	} catch (AssertionFailedError t) {
628	+	threadRecordFailure(t);
629	+	throw t;
630		}
631		}
632
633		/**
634	<	* If argument not null, set status to indicate current testcase
635	<	* should fail
634	>	* Just like assertNull(x), but additionally recording (using
635	>	* threadRecordFailure) any AssertionFailedError thrown, so that
636	>	* the current testcase will fail.
637		*/
638		public void threadAssertNull(Object x) {
639	<	if (x != null) {
253	<	threadFailed = true;
639	>	try {
640		assertNull(x);
641	+	} catch (AssertionFailedError t) {
642	+	threadRecordFailure(t);
643	+	throw t;
644		}
645		}
646
647		/**
648	<	* If arguments not equal, set status to indicate current testcase
649	<	* should fail
648	>	* Just like assertEquals(x, y), but additionally recording (using
649	>	* threadRecordFailure) any AssertionFailedError thrown, so that
650	>	* the current testcase will fail.
651		*/
652		public void threadAssertEquals(long x, long y) {
653	<	if (x != y) {
264	<	threadFailed = true;
653	>	try {
654		assertEquals(x, y);
655	+	} catch (AssertionFailedError t) {
656	+	threadRecordFailure(t);
657	+	throw t;
658		}
659		}
660
661		/**
662	<	* If arguments not equal, set status to indicate current testcase
663	<	* should fail
662	>	* Just like assertEquals(x, y), but additionally recording (using
663	>	* threadRecordFailure) any AssertionFailedError thrown, so that
664	>	* the current testcase will fail.
665		*/
666		public void threadAssertEquals(Object x, Object y) {
667	<	if (x != y && (x == null || !x.equals(y))) {
275	<	threadFailed = true;
667	>	try {
668		assertEquals(x, y);
669	+	} catch (AssertionFailedError fail) {
670	+	threadRecordFailure(fail);
671	+	throw fail;
672	+	} catch (Throwable fail) {
673	+	threadUnexpectedException(fail);
674		}
675		}
676
677		/**
678	<	* threadFail with message "should throw exception"
679	<	*/
678	>	* Just like assertSame(x, y), but additionally recording (using
679	>	* threadRecordFailure) any AssertionFailedError thrown, so that
680	>	* the current testcase will fail.
681	>	*/
682	>	public void threadAssertSame(Object x, Object y) {
683	>	try {
684	>	assertSame(x, y);
685	>	} catch (AssertionFailedError fail) {
686	>	threadRecordFailure(fail);
687	>	throw fail;
688	>	}
689	>	}
690	>
691	>	/**
692	>	* Calls threadFail with message "should throw exception".
693	>	*/
694		public void threadShouldThrow() {
695	<	try {
285	<	threadFailed = true;
286	<	fail("should throw exception");
287	<	} catch (AssertionFailedError e) {
288	<	e.printStackTrace();
289	<	throw e;
290	<	}
695	>	threadFail("should throw exception");
696		}
697
698		/**
699	<	* threadFail with message "Unexpected exception"
699	>	* Calls threadFail with message "should throw" + exceptionName.
700		*/
701	<	public void threadUnexpectedException() {
702	<	threadFailed = true;
298	<	fail("Unexpected exception");
701	>	public void threadShouldThrow(String exceptionName) {
702	>	threadFail("should throw " + exceptionName);
703		}
704
705		/**
706	<	* threadFail with message "Unexpected exception", with argument
706	>	* Records the given exception using {@link #threadRecordFailure},
707	>	* then rethrows the exception, wrapping it in an
708	>	* AssertionFailedError if necessary.
709		*/
710	<	public void threadUnexpectedException(Throwable ex) {
711	<	threadFailed = true;
712	<	ex.printStackTrace();
713	<	fail("Unexpected exception: " + ex);
710	>	public void threadUnexpectedException(Throwable t) {
711	>	threadRecordFailure(t);
712	>	t.printStackTrace();
713	>	if (t instanceof RuntimeException)
714	>	throw (RuntimeException) t;
715	>	else if (t instanceof Error)
716	>	throw (Error) t;
717	>	else {
718	>	AssertionFailedError afe =
719	>	new AssertionFailedError("unexpected exception: " + t);
720	>	afe.initCause(t);
721	>	throw afe;
722	>	}
723		}
724
725		/**
726	<	* Wait out termination of a thread pool or fail doing so
726	>	* Delays, via Thread.sleep, for the given millisecond delay, but
727	>	* if the sleep is shorter than specified, may re-sleep or yield
728	>	* until time elapses.
729		*/
730	<	public void joinPool(ExecutorService exec) {
730	>	static void delay(long millis) throws InterruptedException {
731	>	long startTime = System.nanoTime();
732	>	long ns = millis * 1000 * 1000;
733	>	for (;;) {
734	>	if (millis > 0L)
735	>	Thread.sleep(millis);
736	>	else // too short to sleep
737	>	Thread.yield();
738	>	long d = ns - (System.nanoTime() - startTime);
739	>	if (d > 0L)
740	>	millis = d / (1000 * 1000);
741	>	else
742	>	break;
743	>	}
744	>	}
745	>
746	>	/**
747	>	* Allows use of try-with-resources with per-test thread pools.
748	>	*/
749	>	static class PoolCloser<T extends ExecutorService>
750	>	implements AutoCloseable {
751	>	public final T pool;
752	>	public PoolCloser(T pool) { this.pool = pool; }
753	>	public void close() { joinPool(pool); }
754	>	}
755	>
756	>	/**
757	>	* Waits out termination of a thread pool or fails doing so.
758	>	*/
759	>	static void joinPool(ExecutorService pool) {
760		try {
761	<	exec.shutdown();
762	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
763	<	} catch(SecurityException ok) {
761	>	pool.shutdown();
762	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS))
763	>	fail("ExecutorService " + pool +
764	>	" did not terminate in a timely manner");
765	>	} catch (SecurityException ok) {
766		// Allowed in case test doesn't have privs
767	<	} catch(InterruptedException ie) {
768	<	fail("Unexpected exception");
767	>	} catch (InterruptedException fail) {
768	>	fail("Unexpected InterruptedException");
769	>	}
770	>	}
771	>
772	>	/** Like Runnable, but with the freedom to throw anything */
773	>	interface Action { public void run() throws Throwable; }
774	>
775	>	/**
776	>	* Runs all the given actions in parallel, failing if any fail.
777	>	* Useful for running multiple variants of tests that are
778	>	* necessarily individually slow because they must block.
779	>	*/
780	>	void testInParallel(Action ... actions) {
781	>	try (PoolCloser<ExecutorService> poolCloser
782	>	= new PoolCloser<>(Executors.newCachedThreadPool())) {
783	>	ExecutorService pool = poolCloser.pool;
784	>	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
785	>	for (final Action action : actions)
786	>	futures.add(pool.submit(new CheckedRunnable() {
787	>	public void realRun() throws Throwable { action.run();}}));
788	>	for (Future<?> future : futures)
789	>	try {
790	>	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
791	>	} catch (ExecutionException ex) {
792	>	threadUnexpectedException(ex.getCause());
793	>	} catch (Exception ex) {
794	>	threadUnexpectedException(ex);
795	>	}
796	>	}
797	>	}
798	>
799	>	/**
800	>	* A debugging tool to print all stack traces, as jstack does.
801	>	* Uninteresting threads are filtered out.
802	>	*/
803	>	static void threadDump() {
804	>	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
805	>	System.err.println("------ stacktrace dump start ------");
806	>	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
807	>	String name = info.getThreadName();
808	>	if ("Signal Dispatcher".equals(name))
809	>	continue;
810	>	if ("Reference Handler".equals(name)
811	>	&& info.getLockName().startsWith("java.lang.ref.Reference$Lock"))
812	>	continue;
813	>	if ("Finalizer".equals(name)
814	>	&& info.getLockName().startsWith("java.lang.ref.ReferenceQueue$Lock"))
815	>	continue;
816	>	System.err.print(info);
817		}
818	+	System.err.println("------ stacktrace dump end ------");
819	+	}
820	+
821	+	/**
822	+	* Checks that thread does not terminate within the default
823	+	* millisecond delay of {@code timeoutMillis()}.
824	+	*/
825	+	void assertThreadStaysAlive(Thread thread) {
826	+	assertThreadStaysAlive(thread, timeoutMillis());
827		}
828
829	+	/**
830	+	* Checks that thread does not terminate within the given millisecond delay.
831	+	*/
832	+	void assertThreadStaysAlive(Thread thread, long millis) {
833	+	try {
834	+	// No need to optimize the failing case via Thread.join.
835	+	delay(millis);
836	+	assertTrue(thread.isAlive());
837	+	} catch (InterruptedException fail) {
838	+	fail("Unexpected InterruptedException");
839	+	}
840	+	}
841
842		/**
843	<	* fail with message "should throw exception"
843	>	* Checks that the threads do not terminate within the default
844	>	* millisecond delay of {@code timeoutMillis()}.
845	>	*/
846	>	void assertThreadsStayAlive(Thread... threads) {
847	>	assertThreadsStayAlive(timeoutMillis(), threads);
848	>	}
849	>
850	>	/**
851	>	* Checks that the threads do not terminate within the given millisecond delay.
852	>	*/
853	>	void assertThreadsStayAlive(long millis, Thread... threads) {
854	>	try {
855	>	// No need to optimize the failing case via Thread.join.
856	>	delay(millis);
857	>	for (Thread thread : threads)
858	>	assertTrue(thread.isAlive());
859	>	} catch (InterruptedException fail) {
860	>	fail("Unexpected InterruptedException");
861	>	}
862	>	}
863	>
864	>	/**
865	>	* Checks that future.get times out, with the default timeout of
866	>	* {@code timeoutMillis()}.
867	>	*/
868	>	void assertFutureTimesOut(Future future) {
869	>	assertFutureTimesOut(future, timeoutMillis());
870	>	}
871	>
872	>	/**
873	>	* Checks that future.get times out, with the given millisecond timeout.
874	>	*/
875	>	void assertFutureTimesOut(Future future, long timeoutMillis) {
876	>	long startTime = System.nanoTime();
877	>	try {
878	>	future.get(timeoutMillis, MILLISECONDS);
879	>	shouldThrow();
880	>	} catch (TimeoutException success) {
881	>	} catch (Exception fail) {
882	>	threadUnexpectedException(fail);
883	>	} finally { future.cancel(true); }
884	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
885	>	}
886	>
887	>	/**
888	>	* Fails with message "should throw exception".
889		*/
890		public void shouldThrow() {
891		fail("Should throw exception");
892		}
893
894		/**
895	<	* fail with message "Unexpected exception"
895	>	* Fails with message "should throw " + exceptionName.
896		*/
897	<	public void unexpectedException() {
898	<	fail("Unexpected exception");
897	>	public void shouldThrow(String exceptionName) {
898	>	fail("Should throw " + exceptionName);
899		}
900
339	–
901		/**
902		* The number of elements to place in collections, arrays, etc.
903		*/
904	<	static final int SIZE = 20;
904	>	public static final int SIZE = 20;
905
906		// Some convenient Integer constants
907
908	<	static final Integer zero = new Integer(0);
909	<	static final Integer one = new Integer(1);
910	<	static final Integer two = new Integer(2);
911	<	static final Integer three  = new Integer(3);
912	<	static final Integer four  = new Integer(4);
913	<	static final Integer five  = new Integer(5);
914	<	static final Integer six = new Integer(6);
915	<	static final Integer seven = new Integer(7);
916	<	static final Integer eight = new Integer(8);
917	<	static final Integer nine = new Integer(9);
918	<	static final Integer m1  = new Integer(-1);
919	<	static final Integer m2  = new Integer(-2);
920	<	static final Integer m3  = new Integer(-3);
921	<	static final Integer m4 = new Integer(-4);
922	<	static final Integer m5 = new Integer(-5);
923	<	static final Integer m6 = new Integer(-6);
924	<	static final Integer m10 = new Integer(-10);
908	>	public static final Integer zero  = new Integer(0);
909	>	public static final Integer one   = new Integer(1);
910	>	public static final Integer two   = new Integer(2);
911	>	public static final Integer three = new Integer(3);
912	>	public static final Integer four  = new Integer(4);
913	>	public static final Integer five  = new Integer(5);
914	>	public static final Integer six   = new Integer(6);
915	>	public static final Integer seven = new Integer(7);
916	>	public static final Integer eight = new Integer(8);
917	>	public static final Integer nine  = new Integer(9);
918	>	public static final Integer m1  = new Integer(-1);
919	>	public static final Integer m2  = new Integer(-2);
920	>	public static final Integer m3  = new Integer(-3);
921	>	public static final Integer m4  = new Integer(-4);
922	>	public static final Integer m5  = new Integer(-5);
923	>	public static final Integer m6  = new Integer(-6);
924	>	public static final Integer m10 = new Integer(-10);
925	>
926	>	/**
927	>	* Runs Runnable r with a security policy that permits precisely
928	>	* the specified permissions.  If there is no current security
929	>	* manager, the runnable is run twice, both with and without a
930	>	* security manager.  We require that any security manager permit
931	>	* getPolicy/setPolicy.
932	>	*/
933	>	public void runWithPermissions(Runnable r, Permission... permissions) {
934	>	SecurityManager sm = System.getSecurityManager();
935	>	if (sm == null) {
936	>	r.run();
937	>	}
938	>	runWithSecurityManagerWithPermissions(r, permissions);
939	>	}
940	>
941	>	/**
942	>	* Runs Runnable r with a security policy that permits precisely
943	>	* the specified permissions.  If there is no current security
944	>	* manager, a temporary one is set for the duration of the
945	>	* Runnable.  We require that any security manager permit
946	>	* getPolicy/setPolicy.
947	>	*/
948	>	public void runWithSecurityManagerWithPermissions(Runnable r,
949	>	Permission... permissions) {
950	>	SecurityManager sm = System.getSecurityManager();
951	>	if (sm == null) {
952	>	Policy savedPolicy = Policy.getPolicy();
953	>	try {
954	>	Policy.setPolicy(permissivePolicy());
955	>	System.setSecurityManager(new SecurityManager());
956	>	runWithSecurityManagerWithPermissions(r, permissions);
957	>	} finally {
958	>	System.setSecurityManager(null);
959	>	Policy.setPolicy(savedPolicy);
960	>	}
961	>	} else {
962	>	Policy savedPolicy = Policy.getPolicy();
963	>	AdjustablePolicy policy = new AdjustablePolicy(permissions);
964	>	Policy.setPolicy(policy);
965
966	+	try {
967	+	r.run();
968	+	} finally {
969	+	policy.addPermission(new SecurityPermission("setPolicy"));
970	+	Policy.setPolicy(savedPolicy);
971	+	}
972	+	}
973	+	}
974	+
975	+	/**
976	+	* Runs a runnable without any permissions.
977	+	*/
978	+	public void runWithoutPermissions(Runnable r) {
979	+	runWithPermissions(r);
980	+	}
981
982		/**
983		* A security policy where new permissions can be dynamically added
984		* or all cleared.
985		*/
986	<	static class AdjustablePolicy extends java.security.Policy {
986	>	public static class AdjustablePolicy extends java.security.Policy {
987		Permissions perms = new Permissions();
988	<	AdjustablePolicy() { }
988	>	AdjustablePolicy(Permission... permissions) {
989	>	for (Permission permission : permissions)
990	>	perms.add(permission);
991	>	}
992		void addPermission(Permission perm) { perms.add(perm); }
993		void clearPermissions() { perms = new Permissions(); }
994	<	public PermissionCollection getPermissions(CodeSource cs) {
995	<	return perms;
996	<	}
997	<	public PermissionCollection getPermissions(ProtectionDomain pd) {
998	<	return perms;
999	<	}
1000	<	public boolean implies(ProtectionDomain pd, Permission p) {
1001	<	return perms.implies(p);
1002	<	}
1003	<	public void refresh() {}
994	>	public PermissionCollection getPermissions(CodeSource cs) {
995	>	return perms;
996	>	}
997	>	public PermissionCollection getPermissions(ProtectionDomain pd) {
998	>	return perms;
999	>	}
1000	>	public boolean implies(ProtectionDomain pd, Permission p) {
1001	>	return perms.implies(p);
1002	>	}
1003	>	public void refresh() {}
1004	>	public String toString() {
1005	>	List<Permission> ps = new ArrayList<Permission>();
1006	>	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1007	>	ps.add(e.nextElement());
1008	>	return "AdjustablePolicy with permissions " + ps;
1009	>	}
1010		}
1011
1012	+	/**
1013	+	* Returns a policy containing all the permissions we ever need.
1014	+	*/
1015	+	public static Policy permissivePolicy() {
1016	+	return new AdjustablePolicy
1017	+	// Permissions j.u.c. needs directly
1018	+	(new RuntimePermission("modifyThread"),
1019	+	new RuntimePermission("getClassLoader"),
1020	+	new RuntimePermission("setContextClassLoader"),
1021	+	// Permissions needed to change permissions!
1022	+	new SecurityPermission("getPolicy"),
1023	+	new SecurityPermission("setPolicy"),
1024	+	new RuntimePermission("setSecurityManager"),
1025	+	// Permissions needed by the junit test harness
1026	+	new RuntimePermission("accessDeclaredMembers"),
1027	+	new PropertyPermission("*", "read"),
1028	+	new java.io.FilePermission("<<ALL FILES>>", "read"));
1029	+	}
1030
1031	<	// Some convenient Runnable classes
1031	>	/**
1032	>	* Sleeps until the given time has elapsed.
1033	>	* Throws AssertionFailedError if interrupted.
1034	>	*/
1035	>	void sleep(long millis) {
1036	>	try {
1037	>	delay(millis);
1038	>	} catch (InterruptedException fail) {
1039	>	AssertionFailedError afe =
1040	>	new AssertionFailedError("Unexpected InterruptedException");
1041	>	afe.initCause(fail);
1042	>	throw afe;
1043	>	}
1044	>	}
1045
1046	<	static class NoOpRunnable implements Runnable {
1047	<	public void run() {}
1046	>	/**
1047	>	* Spin-waits up to the specified number of milliseconds for the given
1048	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1049	>	*/
1050	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1051	>	long startTime = System.nanoTime();
1052	>	for (;;) {
1053	>	Thread.State s = thread.getState();
1054	>	if (s == Thread.State.BLOCKED ||
1055	>	s == Thread.State.WAITING ||
1056	>	s == Thread.State.TIMED_WAITING)
1057	>	return;
1058	>	else if (s == Thread.State.TERMINATED)
1059	>	fail("Unexpected thread termination");
1060	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1061	>	threadAssertTrue(thread.isAlive());
1062	>	return;
1063	>	}
1064	>	Thread.yield();
1065	>	}
1066		}
1067
1068	<	static class NoOpCallable implements Callable {
1069	<	public Object call() { return Boolean.TRUE; }
1068	>	/**
1069	>	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
1070	>	* state: BLOCKED, WAITING, or TIMED_WAITING.
1071	>	*/
1072	>	void waitForThreadToEnterWaitState(Thread thread) {
1073	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
1074		}
1075
1076	<	static final String TEST_STRING = "a test string";
1076	>	/**
1077	>	* Returns the number of milliseconds since time given by
1078	>	* startNanoTime, which must have been previously returned from a
1079	>	* call to {@link System#nanoTime()}.
1080	>	*/
1081	>	static long millisElapsedSince(long startNanoTime) {
1082	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1083	>	}
1084	>
1085	>	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1086	>	//         long startTime = System.nanoTime();
1087	>	//         try {
1088	>	//             r.run();
1089	>	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1090	>	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1091	>	//             throw new AssertionFailedError("did not return promptly");
1092	>	//     }
1093	>
1094	>	//     void assertTerminatesPromptly(Runnable r) {
1095	>	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1096	>	//     }
1097
1098	<	static class StringTask implements Callable<String> {
1099	<	public String call() { return TEST_STRING; }
1098	>	/**
1099	>	* Checks that timed f.get() returns the expected value, and does not
1100	>	* wait for the timeout to elapse before returning.
1101	>	*/
1102	>	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1103	>	long startTime = System.nanoTime();
1104	>	try {
1105	>	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1106	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1107	>	if (millisElapsedSince(startTime) > timeoutMillis/2)
1108	>	throw new AssertionFailedError("timed get did not return promptly");
1109		}
1110
1111	<	static class NPETask implements Callable<String> {
1112	<	public String call() { throw new NullPointerException(); }
1111	>	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1112	>	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1113		}
1114
1115	<	static class CallableOne implements Callable<Integer> {
1116	<	public Integer call() { return one; }
1115	>	/**
1116	>	* Returns a new started daemon Thread running the given runnable.
1117	>	*/
1118	>	Thread newStartedThread(Runnable runnable) {
1119	>	Thread t = new Thread(runnable);
1120	>	t.setDaemon(true);
1121	>	t.start();
1122	>	return t;
1123		}
1124
1125	<	class ShortRunnable implements Runnable {
1126	<	public void run() {
1127	<	try {
1128	<	Thread.sleep(SHORT_DELAY_MS);
1129	<	}
1130	<	catch(Exception e) {
1131	<	threadUnexpectedException(e);
1125	>	/**
1126	>	* Waits for the specified time (in milliseconds) for the thread
1127	>	* to terminate (using {@link Thread#join(long)}), else interrupts
1128	>	* the thread (in the hope that it may terminate later) and fails.
1129	>	*/
1130	>	void awaitTermination(Thread t, long timeoutMillis) {
1131	>	try {
1132	>	t.join(timeoutMillis);
1133	>	} catch (InterruptedException fail) {
1134	>	threadUnexpectedException(fail);
1135	>	} finally {
1136	>	if (t.getState() != Thread.State.TERMINATED) {
1137	>	t.interrupt();
1138	>	fail("Test timed out");
1139		}
1140		}
1141		}
1142
1143	<	class ShortInterruptedRunnable implements Runnable {
1144	<	public void run() {
1143	>	/**
1144	>	* Waits for LONG_DELAY_MS milliseconds for the thread to
1145	>	* terminate (using {@link Thread#join(long)}), else interrupts
1146	>	* the thread (in the hope that it may terminate later) and fails.
1147	>	*/
1148	>	void awaitTermination(Thread t) {
1149	>	awaitTermination(t, LONG_DELAY_MS);
1150	>	}
1151	>
1152	>	// Some convenient Runnable classes
1153	>
1154	>	public abstract class CheckedRunnable implements Runnable {
1155	>	protected abstract void realRun() throws Throwable;
1156	>
1157	>	public final void run() {
1158		try {
1159	<	Thread.sleep(SHORT_DELAY_MS);
1160	<	threadShouldThrow();
1161	<	}
429	<	catch(InterruptedException success) {
1159	>	realRun();
1160	>	} catch (Throwable fail) {
1161	>	threadUnexpectedException(fail);
1162		}
1163		}
1164		}
1165
1166	<	class SmallRunnable implements Runnable {
1167	<	public void run() {
1166	>	public abstract class RunnableShouldThrow implements Runnable {
1167	>	protected abstract void realRun() throws Throwable;
1168	>
1169	>	final Class<?> exceptionClass;
1170	>
1171	>	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
1172	>	this.exceptionClass = exceptionClass;
1173	>	}
1174	>
1175	>	public final void run() {
1176		try {
1177	<	Thread.sleep(SMALL_DELAY_MS);
1178	<	}
1179	<	catch(Exception e) {
1180	<	threadUnexpectedException(e);
1177	>	realRun();
1178	>	threadShouldThrow(exceptionClass.getSimpleName());
1179	>	} catch (Throwable t) {
1180	>	if (! exceptionClass.isInstance(t))
1181	>	threadUnexpectedException(t);
1182		}
1183		}
1184		}
1185
1186	<	class SmallPossiblyInterruptedRunnable implements Runnable {
1187	<	public void run() {
1186	>	public abstract class ThreadShouldThrow extends Thread {
1187	>	protected abstract void realRun() throws Throwable;
1188	>
1189	>	final Class<?> exceptionClass;
1190	>
1191	>	<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) {
1192	>	this.exceptionClass = exceptionClass;
1193	>	}
1194	>
1195	>	public final void run() {
1196		try {
1197	<	Thread.sleep(SMALL_DELAY_MS);
1198	<	}
1199	<	catch(Exception e) {
1197	>	realRun();
1198	>	threadShouldThrow(exceptionClass.getSimpleName());
1199	>	} catch (Throwable t) {
1200	>	if (! exceptionClass.isInstance(t))
1201	>	threadUnexpectedException(t);
1202		}
1203		}
1204		}
1205
1206	<	class SmallCallable implements Callable {
1207	<	public Object call() {
1206	>	public abstract class CheckedInterruptedRunnable implements Runnable {
1207	>	protected abstract void realRun() throws Throwable;
1208	>
1209	>	public final void run() {
1210		try {
1211	<	Thread.sleep(SMALL_DELAY_MS);
1211	>	realRun();
1212	>	threadShouldThrow("InterruptedException");
1213	>	} catch (InterruptedException success) {
1214	>	threadAssertFalse(Thread.interrupted());
1215	>	} catch (Throwable fail) {
1216	>	threadUnexpectedException(fail);
1217		}
460	–	catch(Exception e) {
461	–	threadUnexpectedException(e);
462	–	}
463	–	return Boolean.TRUE;
1218		}
1219		}
1220
1221	<	class SmallInterruptedRunnable implements Runnable {
1222	<	public void run() {
1221	>	public abstract class CheckedCallable<T> implements Callable<T> {
1222	>	protected abstract T realCall() throws Throwable;
1223	>
1224	>	public final T call() {
1225		try {
1226	<	Thread.sleep(SMALL_DELAY_MS);
1227	<	threadShouldThrow();
1228	<	}
1229	<	catch(InterruptedException success) {
1226	>	return realCall();
1227	>	} catch (Throwable fail) {
1228	>	threadUnexpectedException(fail);
1229	>	return null;
1230		}
1231		}
1232		}
1233
1234	+	public abstract class CheckedInterruptedCallable<T>
1235	+	implements Callable<T> {
1236	+	protected abstract T realCall() throws Throwable;
1237
1238	<	class MediumRunnable implements Runnable {
480	<	public void run() {
1238	>	public final T call() {
1239		try {
1240	<	Thread.sleep(MEDIUM_DELAY_MS);
1241	<	}
1242	<	catch(Exception e) {
1243	<	threadUnexpectedException(e);
1240	>	T result = realCall();
1241	>	threadShouldThrow("InterruptedException");
1242	>	return result;
1243	>	} catch (InterruptedException success) {
1244	>	threadAssertFalse(Thread.interrupted());
1245	>	} catch (Throwable fail) {
1246	>	threadUnexpectedException(fail);
1247		}
1248	+	return null;
1249		}
1250		}
1251
1252	<	class MediumInterruptedRunnable implements Runnable {
1253	<	public void run() {
1252	>	public static class NoOpRunnable implements Runnable {
1253	>	public void run() {}
1254	>	}
1255	>
1256	>	public static class NoOpCallable implements Callable {
1257	>	public Object call() { return Boolean.TRUE; }
1258	>	}
1259	>
1260	>	public static final String TEST_STRING = "a test string";
1261	>
1262	>	public static class StringTask implements Callable<String> {
1263	>	final String value;
1264	>	public StringTask() { this(TEST_STRING); }
1265	>	public StringTask(String value) { this.value = value; }
1266	>	public String call() { return value; }
1267	>	}
1268	>
1269	>	public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1270	>	return new CheckedCallable<String>() {
1271	>	protected String realCall() {
1272	>	try {
1273	>	latch.await();
1274	>	} catch (InterruptedException quittingTime) {}
1275	>	return TEST_STRING;
1276	>	}};
1277	>	}
1278	>
1279	>	public Runnable countDowner(final CountDownLatch latch) {
1280	>	return new CheckedRunnable() {
1281	>	public void realRun() throws InterruptedException {
1282	>	latch.countDown();
1283	>	}};
1284	>	}
1285	>
1286	>	public Runnable awaiter(final CountDownLatch latch) {
1287	>	return new CheckedRunnable() {
1288	>	public void realRun() throws InterruptedException {
1289	>	await(latch);
1290	>	}};
1291	>	}
1292	>
1293	>	public void await(CountDownLatch latch) {
1294	>	try {
1295	>	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1296	>	} catch (Throwable fail) {
1297	>	threadUnexpectedException(fail);
1298	>	}
1299	>	}
1300	>
1301	>	public void await(Semaphore semaphore) {
1302	>	try {
1303	>	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1304	>	} catch (Throwable fail) {
1305	>	threadUnexpectedException(fail);
1306	>	}
1307	>	}
1308	>
1309	>	//     /**
1310	>	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1311	>	//      */
1312	>	//     public void await(AtomicBoolean flag) {
1313	>	//         await(flag, LONG_DELAY_MS);
1314	>	//     }
1315	>
1316	>	//     /**
1317	>	//      * Spin-waits up to the specified timeout until flag becomes true.
1318	>	//      */
1319	>	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1320	>	//         long startTime = System.nanoTime();
1321	>	//         while (!flag.get()) {
1322	>	//             if (millisElapsedSince(startTime) > timeoutMillis)
1323	>	//                 throw new AssertionFailedError("timed out");
1324	>	//             Thread.yield();
1325	>	//         }
1326	>	//     }
1327	>
1328	>	public static class NPETask implements Callable<String> {
1329	>	public String call() { throw new NullPointerException(); }
1330	>	}
1331	>
1332	>	public static class CallableOne implements Callable<Integer> {
1333	>	public Integer call() { return one; }
1334	>	}
1335	>
1336	>	public class ShortRunnable extends CheckedRunnable {
1337	>	protected void realRun() throws Throwable {
1338	>	delay(SHORT_DELAY_MS);
1339	>	}
1340	>	}
1341	>
1342	>	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1343	>	protected void realRun() throws InterruptedException {
1344	>	delay(SHORT_DELAY_MS);
1345	>	}
1346	>	}
1347	>
1348	>	public class SmallRunnable extends CheckedRunnable {
1349	>	protected void realRun() throws Throwable {
1350	>	delay(SMALL_DELAY_MS);
1351	>	}
1352	>	}
1353	>
1354	>	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1355	>	protected void realRun() {
1356		try {
1357	<	Thread.sleep(MEDIUM_DELAY_MS);
1358	<	threadShouldThrow();
495	<	}
496	<	catch(InterruptedException success) {
497	<	}
1357	>	delay(SMALL_DELAY_MS);
1358	>	} catch (InterruptedException ok) {}
1359		}
1360		}
1361
1362	<	class MediumPossiblyInterruptedRunnable implements Runnable {
1363	<	public void run() {
1362	>	public class SmallCallable extends CheckedCallable {
1363	>	protected Object realCall() throws InterruptedException {
1364	>	delay(SMALL_DELAY_MS);
1365	>	return Boolean.TRUE;
1366	>	}
1367	>	}
1368	>
1369	>	public class MediumRunnable extends CheckedRunnable {
1370	>	protected void realRun() throws Throwable {
1371	>	delay(MEDIUM_DELAY_MS);
1372	>	}
1373	>	}
1374	>
1375	>	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1376	>	protected void realRun() throws InterruptedException {
1377	>	delay(MEDIUM_DELAY_MS);
1378	>	}
1379	>	}
1380	>
1381	>	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1382	>	return new CheckedRunnable() {
1383	>	protected void realRun() {
1384	>	try {
1385	>	delay(timeoutMillis);
1386	>	} catch (InterruptedException ok) {}
1387	>	}};
1388	>	}
1389	>
1390	>	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1391	>	protected void realRun() {
1392		try {
1393	<	Thread.sleep(MEDIUM_DELAY_MS);
1394	<	}
506	<	catch(InterruptedException success) {
507	<	}
1393	>	delay(MEDIUM_DELAY_MS);
1394	>	} catch (InterruptedException ok) {}
1395		}
1396		}
1397
1398	<	class LongPossiblyInterruptedRunnable implements Runnable {
1399	<	public void run() {
1398	>	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1399	>	protected void realRun() {
1400		try {
1401	<	Thread.sleep(LONG_DELAY_MS);
1402	<	}
516	<	catch(InterruptedException success) {
517	<	}
1401	>	delay(LONG_DELAY_MS);
1402	>	} catch (InterruptedException ok) {}
1403		}
1404		}
1405
1406		/**
1407		* For use as ThreadFactory in constructors
1408		*/
1409	<	static class SimpleThreadFactory implements ThreadFactory{
1410	<	public Thread newThread(Runnable r){
1409	>	public static class SimpleThreadFactory implements ThreadFactory {
1410	>	public Thread newThread(Runnable r) {
1411		return new Thread(r);
1412		}
1413		}
1414
1415	<	static class TrackedShortRunnable implements Runnable {
1416	<	volatile boolean done = false;
1415	>	public interface TrackedRunnable extends Runnable {
1416	>	boolean isDone();
1417	>	}
1418	>
1419	>	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1420	>	return new TrackedRunnable() {
1421	>	private volatile boolean done = false;
1422	>	public boolean isDone() { return done; }
1423	>	public void run() {
1424	>	try {
1425	>	delay(timeoutMillis);
1426	>	done = true;
1427	>	} catch (InterruptedException ok) {}
1428	>	}
1429	>	};
1430	>	}
1431	>
1432	>	public static class TrackedShortRunnable implements Runnable {
1433	>	public volatile boolean done = false;
1434		public void run() {
1435		try {
1436	<	Thread.sleep(SMALL_DELAY_MS);
1436	>	delay(SHORT_DELAY_MS);
1437		done = true;
1438	<	} catch(Exception e){
537	<	}
1438	>	} catch (InterruptedException ok) {}
1439		}
1440		}
1441
1442	<	static class TrackedMediumRunnable implements Runnable {
1443	<	volatile boolean done = false;
1442	>	public static class TrackedSmallRunnable implements Runnable {
1443	>	public volatile boolean done = false;
1444		public void run() {
1445		try {
1446	<	Thread.sleep(MEDIUM_DELAY_MS);
1446	>	delay(SMALL_DELAY_MS);
1447		done = true;
1448	<	} catch(Exception e){
548	<	}
1448	>	} catch (InterruptedException ok) {}
1449		}
1450		}
1451
1452	<	static class TrackedLongRunnable implements Runnable {
1453	<	volatile boolean done = false;
1452	>	public static class TrackedMediumRunnable implements Runnable {
1453	>	public volatile boolean done = false;
1454		public void run() {
1455		try {
1456	<	Thread.sleep(LONG_DELAY_MS);
1456	>	delay(MEDIUM_DELAY_MS);
1457		done = true;
1458	<	} catch(Exception e){
559	<	}
1458	>	} catch (InterruptedException ok) {}
1459		}
1460		}
1461
1462	<	static class TrackedNoOpRunnable implements Runnable {
1463	<	volatile boolean done = false;
1462	>	public static class TrackedLongRunnable implements Runnable {
1463	>	public volatile boolean done = false;
1464	>	public void run() {
1465	>	try {
1466	>	delay(LONG_DELAY_MS);
1467	>	done = true;
1468	>	} catch (InterruptedException ok) {}
1469	>	}
1470	>	}
1471	>
1472	>	public static class TrackedNoOpRunnable implements Runnable {
1473	>	public volatile boolean done = false;
1474		public void run() {
1475		done = true;
1476		}
1477		}
1478
1479	<	static class TrackedCallable implements Callable {
1480	<	volatile boolean done = false;
1479	>	public static class TrackedCallable implements Callable {
1480	>	public volatile boolean done = false;
1481		public Object call() {
1482		try {
1483	<	Thread.sleep(SMALL_DELAY_MS);
1483	>	delay(SMALL_DELAY_MS);
1484		done = true;
1485	<	} catch(Exception e){
577	<	}
1485	>	} catch (InterruptedException ok) {}
1486		return Boolean.TRUE;
1487		}
1488		}
1489
1490	+	/**
1491	+	* Analog of CheckedRunnable for RecursiveAction
1492	+	*/
1493	+	public abstract class CheckedRecursiveAction extends RecursiveAction {
1494	+	protected abstract void realCompute() throws Throwable;
1495	+
1496	+	@Override protected final void compute() {
1497	+	try {
1498	+	realCompute();
1499	+	} catch (Throwable fail) {
1500	+	threadUnexpectedException(fail);
1501	+	}
1502	+	}
1503	+	}
1504	+
1505	+	/**
1506	+	* Analog of CheckedCallable for RecursiveTask
1507	+	*/
1508	+	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1509	+	protected abstract T realCompute() throws Throwable;
1510	+
1511	+	@Override protected final T compute() {
1512	+	try {
1513	+	return realCompute();
1514	+	} catch (Throwable fail) {
1515	+	threadUnexpectedException(fail);
1516	+	return null;
1517	+	}
1518	+	}
1519	+	}
1520
1521		/**
1522		* For use as RejectedExecutionHandler in constructors
1523		*/
1524	<	static class NoOpREHandler implements RejectedExecutionHandler{
1525	<	public void rejectedExecution(Runnable r, ThreadPoolExecutor executor){}
1524	>	public static class NoOpREHandler implements RejectedExecutionHandler {
1525	>	public void rejectedExecution(Runnable r,
1526	>	ThreadPoolExecutor executor) {}
1527	>	}
1528	>
1529	>	/**
1530	>	* A CyclicBarrier that uses timed await and fails with
1531	>	* AssertionFailedErrors instead of throwing checked exceptions.
1532	>	*/
1533	>	public class CheckedBarrier extends CyclicBarrier {
1534	>	public CheckedBarrier(int parties) { super(parties); }
1535	>
1536	>	public int await() {
1537	>	try {
1538	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1539	>	} catch (TimeoutException timedOut) {
1540	>	throw new AssertionFailedError("timed out");
1541	>	} catch (Exception fail) {
1542	>	AssertionFailedError afe =
1543	>	new AssertionFailedError("Unexpected exception: " + fail);
1544	>	afe.initCause(fail);
1545	>	throw afe;
1546	>	}
1547	>	}
1548	>	}
1549	>
1550	>	void checkEmpty(BlockingQueue q) {
1551	>	try {
1552	>	assertTrue(q.isEmpty());
1553	>	assertEquals(0, q.size());
1554	>	assertNull(q.peek());
1555	>	assertNull(q.poll());
1556	>	assertNull(q.poll(0, MILLISECONDS));
1557	>	assertEquals(q.toString(), "[]");
1558	>	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1559	>	assertFalse(q.iterator().hasNext());
1560	>	try {
1561	>	q.element();
1562	>	shouldThrow();
1563	>	} catch (NoSuchElementException success) {}
1564	>	try {
1565	>	q.iterator().next();
1566	>	shouldThrow();
1567	>	} catch (NoSuchElementException success) {}
1568	>	try {
1569	>	q.remove();
1570	>	shouldThrow();
1571	>	} catch (NoSuchElementException success) {}
1572	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1573	>	}
1574	>
1575	>	void assertSerialEquals(Object x, Object y) {
1576	>	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1577	>	}
1578	>
1579	>	void assertNotSerialEquals(Object x, Object y) {
1580	>	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1581	>	}
1582	>
1583	>	byte[] serialBytes(Object o) {
1584	>	try {
1585	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1586	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1587	>	oos.writeObject(o);
1588	>	oos.flush();
1589	>	oos.close();
1590	>	return bos.toByteArray();
1591	>	} catch (Throwable fail) {
1592	>	threadUnexpectedException(fail);
1593	>	return new byte[0];
1594	>	}
1595		}
1596
1597	+	@SuppressWarnings("unchecked")
1598	+	<T> T serialClone(T o) {
1599	+	try {
1600	+	ObjectInputStream ois = new ObjectInputStream
1601	+	(new ByteArrayInputStream(serialBytes(o)));
1602	+	T clone = (T) ois.readObject();
1603	+	assertSame(o.getClass(), clone.getClass());
1604	+	return clone;
1605	+	} catch (Throwable fail) {
1606	+	threadUnexpectedException(fail);
1607	+	return null;
1608	+	}
1609	+	}
1610
1611	+	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1612	+	Runnable... throwingActions) {
1613	+	for (Runnable throwingAction : throwingActions) {
1614	+	boolean threw = false;
1615	+	try { throwingAction.run(); }
1616	+	catch (Throwable t) {
1617	+	threw = true;
1618	+	if (!expectedExceptionClass.isInstance(t)) {
1619	+	AssertionFailedError afe =
1620	+	new AssertionFailedError
1621	+	("Expected " + expectedExceptionClass.getName() +
1622	+	", got " + t.getClass().getName());
1623	+	afe.initCause(t);
1624	+	threadUnexpectedException(afe);
1625	+	}
1626	+	}
1627	+	if (!threw)
1628	+	shouldThrow(expectedExceptionClass.getName());
1629	+	}
1630	+	}
1631	+
1632	+	public void assertIteratorExhausted(Iterator<?> it) {
1633	+	try {
1634	+	it.next();
1635	+	shouldThrow();
1636	+	} catch (NoSuchElementException success) {}
1637	+	assertFalse(it.hasNext());
1638	+	}
1639		}

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