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Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.17 by dl, Wed Jan 7 20:49:53 2004 UTC vs.
Revision 1.157 by jsr166, Sat Oct 3 22:20:05 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
5	<	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	<	* Pat Fisher, Mike Judd.
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.MINUTES;
11	>	import static java.util.concurrent.TimeUnit.NANOSECONDS;
12	>
13	>	import java.io.ByteArrayInputStream;
14	>	import java.io.ByteArrayOutputStream;
15	>	import java.io.ObjectInputStream;
16	>	import java.io.ObjectOutputStream;
17	>	import java.lang.management.ManagementFactory;
18	>	import java.lang.management.ThreadInfo;
19	>	import java.lang.management.ThreadMXBean;
20	>	import java.lang.reflect.Constructor;
21	>	import java.lang.reflect.Method;
22	>	import java.lang.reflect.Modifier;
23	>	import java.security.CodeSource;
24	>	import java.security.Permission;
25	>	import java.security.PermissionCollection;
26	>	import java.security.Permissions;
27	>	import java.security.Policy;
28	>	import java.security.ProtectionDomain;
29	>	import java.security.SecurityPermission;
30	>	import java.util.ArrayList;
31	>	import java.util.Arrays;
32	>	import java.util.Date;
33	>	import java.util.Enumeration;
34	>	import java.util.Iterator;
35	>	import java.util.List;
36	>	import java.util.NoSuchElementException;
37	>	import java.util.PropertyPermission;
38	>	import java.util.concurrent.BlockingQueue;
39	>	import java.util.concurrent.Callable;
40	>	import java.util.concurrent.CountDownLatch;
41	>	import java.util.concurrent.CyclicBarrier;
42	>	import java.util.concurrent.ExecutionException;
43	>	import java.util.concurrent.Executors;
44	>	import java.util.concurrent.ExecutorService;
45	>	import java.util.concurrent.ForkJoinPool;
46	>	import java.util.concurrent.Future;
47	>	import java.util.concurrent.RecursiveAction;
48	>	import java.util.concurrent.RecursiveTask;
49	>	import java.util.concurrent.RejectedExecutionHandler;
50	>	import java.util.concurrent.Semaphore;
51	>	import java.util.concurrent.ThreadFactory;
52	>	import java.util.concurrent.ThreadPoolExecutor;
53	>	import java.util.concurrent.TimeoutException;
54	>	import java.util.concurrent.atomic.AtomicReference;
55	>	import java.util.regex.Pattern;
56	>
57	>	import junit.framework.AssertionFailedError;
58	>	import junit.framework.Test;
59	>	import junit.framework.TestCase;
60	>	import junit.framework.TestResult;
61	>	import junit.framework.TestSuite;
62
63		/**
64		* Base class for JSR166 Junit TCK tests.  Defines some constants,
65		* utility methods and classes, as well as a simple framework for
66		* helping to make sure that assertions failing in generated threads
67		* cause the associated test that generated them to itself fail (which
68	<	* JUnit doe not otherwise arrange).  The rules for creating such
68	>	* JUnit does not otherwise arrange).  The rules for creating such
69		* tests are:
70		*
71		* <ol>
72		*
73	<	* <li> All assertions in code running in generated threads must use
74	<	* the forms {@link threadFail} , {@link threadAssertTrue} {@link
75	<	* threadAssertEquals}, or {@link threadAssertNull}, (not
76	<	* <tt>fail</tt>, <tt>assertTrue</tt>, etc.) It is OK (but not
73	>	* <li>All assertions in code running in generated threads must use
74	>	* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
75	>	* #threadAssertEquals}, or {@link #threadAssertNull}, (not
76	>	* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
77		* particularly recommended) for other code to use these forms too.
78		* Only the most typically used JUnit assertion methods are defined
79	<	* this way, but enough to live with.</li>
79	>	* this way, but enough to live with.
80		*
81	<	* <li> If you override {@link setUp} or {@link tearDown}, make sure
82	<	* to invoke <tt>super.setUp</tt> and <tt>super.tearDown</tt> within
81	>	* <li>If you override {@link #setUp} or {@link #tearDown}, make sure
82	>	* to invoke {@code super.setUp} and {@code super.tearDown} within
83		* them. These methods are used to clear and check for thread
84	<	* assertion failures.</li>
84	>	* assertion failures.
85		*
86	<	* <li>All delays and timeouts must use one of the constants <tt>
87	<	* SHORT_DELAY_MS</tt>, <tt> SMALL_DELAY_MS</tt>, <tt> MEDIUM_DELAY_MS</tt>,
88	<	* <tt> LONG_DELAY_MS</tt>. The idea here is that a SHORT is always
86	>	* <li>All delays and timeouts must use one of the constants {@code
87	>	* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
88	>	* {@code LONG_DELAY_MS}. The idea here is that a SHORT is always
89		* discriminable from zero time, and always allows enough time for the
90		* small amounts of computation (creating a thread, calling a few
91		* methods, etc) needed to reach a timeout point. Similarly, a SMALL
92		* is always discriminable as larger than SHORT and smaller than
93		* MEDIUM.  And so on. These constants are set to conservative values,
94		* but even so, if there is ever any doubt, they can all be increased
95	<	* in one spot to rerun tests on slower platforms</li>
95	>	* in one spot to rerun tests on slower platforms.
96		*
97	<	* <li> All threads generated must be joined inside each test case
98	<	* method (or <tt>fail</tt> to do so) before returning from the
99	<	* method. The <tt> joinPool</tt> method can be used to do this when
100	<	* using Executors.</li>
97	>	* <li>All threads generated must be joined inside each test case
98	>	* method (or {@code fail} to do so) before returning from the
99	>	* method. The {@code joinPool} method can be used to do this when
100	>	* using Executors.
101		*
102		* </ol>
103		*
104	<	* <p> <b>Other notes</b>
104	>	* <p><b>Other notes</b>
105		* <ul>
106		*
107	<	* <li> Usually, there is one testcase method per JSR166 method
107	>	* <li>Usually, there is one testcase method per JSR166 method
108		* covering "normal" operation, and then as many exception-testing
109		* methods as there are exceptions the method can throw. Sometimes
110		* there are multiple tests per JSR166 method when the different
111		* "normal" behaviors differ significantly. And sometimes testcases
112		* cover multiple methods when they cannot be tested in
113	<	* isolation.</li>
114	<	*
115	<	* <li> The documentation style for testcases is to provide as javadoc
113	>	* isolation.
114	>	*
115	>	* <li>The documentation style for testcases is to provide as javadoc
116		* a simple sentence or two describing the property that the testcase
117		* method purports to test. The javadocs do not say anything about how
118	<	* the property is tested. To find out, read the code.</li>
118	>	* the property is tested. To find out, read the code.
119		*
120	<	* <li> These tests are "conformance tests", and do not attempt to
120	>	* <li>These tests are "conformance tests", and do not attempt to
121		* test throughput, latency, scalability or other performance factors
122		* (see the separate "jtreg" tests for a set intended to check these
123		* for the most central aspects of functionality.) So, most tests use
124		* the smallest sensible numbers of threads, collection sizes, etc
125	<	* needed to check basic conformance.</li>
125	>	* needed to check basic conformance.
126		*
127		* <li>The test classes currently do not declare inclusion in
128		* any particular package to simplify things for people integrating
129	<	* them in TCK test suites.</li>
129	>	* them in TCK test suites.
130		*
131	<	* <li> As a convenience, the <tt>main</tt> of this class (JSR166TestCase)
132	<	* runs all JSR166 unit tests.</li>
131	>	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
132	>	* runs all JSR166 unit tests.
133		*
134		* </ul>
135		*/
136		public class JSR166TestCase extends TestCase {
137	+	private static final boolean useSecurityManager =
138	+	Boolean.getBoolean("jsr166.useSecurityManager");
139	+
140	+	protected static final boolean expensiveTests =
141	+	Boolean.getBoolean("jsr166.expensiveTests");
142	+
143	+	/**
144	+	* If true, also run tests that are not part of the official tck
145	+	* because they test unspecified implementation details.
146	+	*/
147	+	protected static final boolean testImplementationDetails =
148	+	Boolean.getBoolean("jsr166.testImplementationDetails");
149	+
150	+	/**
151	+	* If true, report on stdout all "slow" tests, that is, ones that
152	+	* take more than profileThreshold milliseconds to execute.
153	+	*/
154	+	private static final boolean profileTests =
155	+	Boolean.getBoolean("jsr166.profileTests");
156	+
157	+	/**
158	+	* The number of milliseconds that tests are permitted for
159	+	* execution without being reported, when profileTests is set.
160	+	*/
161	+	private static final long profileThreshold =
162	+	Long.getLong("jsr166.profileThreshold", 100);
163	+
164		/**
165	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
166	<	*/
167	<	public static void main (String[] args) {
168	<	int iters = 1;
169	<	if (args.length > 0)
170	<	iters = Integer.parseInt(args[0]);
171	<	Test s = suite();
172	<	for (int i = 0; i < iters; ++i)
173	<	junit.textui.TestRunner.run (s);
165	>	* The number of repetitions per test (for tickling rare bugs).
166	>	*/
167	>	private static final int runsPerTest =
168	>	Integer.getInteger("jsr166.runsPerTest", 1);
169	>
170	>	/**
171	>	* The number of repetitions of the test suite (for finding leaks?).
172	>	*/
173	>	private static final int suiteRuns =
174	>	Integer.getInteger("jsr166.suiteRuns", 1);
175	>
176	>	public JSR166TestCase() { super(); }
177	>	public JSR166TestCase(String name) { super(name); }
178	>
179	>	/**
180	>	* A filter for tests to run, matching strings of the form
181	>	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
182	>	* Usefully combined with jsr166.runsPerTest.
183	>	*/
184	>	private static final Pattern methodFilter = methodFilter();
185	>
186	>	private static Pattern methodFilter() {
187	>	String regex = System.getProperty("jsr166.methodFilter");
188	>	return (regex == null) ? null : Pattern.compile(regex);
189	>	}
190	>
191	>	static volatile TestCase currentTestCase;
192	>	static {
193	>	Runnable checkForWedgedTest = new Runnable() { public void run() {
194	>	// avoid spurious reports with enormous runsPerTest
195	>	final int timeoutMinutes = Math.max(runsPerTest / 10, 1);
196	>	for (TestCase lastTestCase = currentTestCase;;) {
197	>	try { MINUTES.sleep(timeoutMinutes); }
198	>	catch (InterruptedException unexpected) { break; }
199	>	if (lastTestCase == currentTestCase) {
200	>	System.err.println
201	>	("Looks like we're stuck running test: "
202	>	+ lastTestCase);
203	>	dumpTestThreads();
204	>	}
205	>	lastTestCase = currentTestCase;
206	>	}}};
207	>	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
208	>	thread.setDaemon(true);
209	>	thread.start();
210	>	}
211	>
212	>	public void runBare() throws Throwable {
213	>	currentTestCase = this;
214	>	if (methodFilter == null
215	>	|| methodFilter.matcher(toString()).find())
216	>	super.runBare();
217	>	}
218	>
219	>	protected void runTest() throws Throwable {
220	>	for (int i = 0; i < runsPerTest; i++) {
221	>	if (profileTests)
222	>	runTestProfiled();
223	>	else
224	>	super.runTest();
225	>	}
226	>	}
227	>
228	>	protected void runTestProfiled() throws Throwable {
229	>	for (int i = 0; i < 2; i++) {
230	>	long startTime = System.nanoTime();
231	>	super.runTest();
232	>	long elapsedMillis = millisElapsedSince(startTime);
233	>	if (elapsedMillis < profileThreshold)
234	>	break;
235	>	// Never report first run of any test; treat it as a
236	>	// warmup run, notably to trigger all needed classloading,
237	>	if (i > 0)
238	>	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
239	>	}
240	>	}
241	>
242	>	/**
243	>	* Runs all JSR166 unit tests using junit.textui.TestRunner.
244	>	*/
245	>	public static void main(String[] args) {
246	>	main(suite(), args);
247	>	}
248	>
249	>	/**
250	>	* Runs all unit tests in the given test suite.
251	>	* Actual behavior influenced by jsr166.* system properties.
252	>	*/
253	>	static void main(Test suite, String[] args) {
254	>	if (useSecurityManager) {
255	>	System.err.println("Setting a permissive security manager");
256	>	Policy.setPolicy(permissivePolicy());
257	>	System.setSecurityManager(new SecurityManager());
258	>	}
259	>	for (int i = 0; i < suiteRuns; i++) {
260	>	TestResult result = junit.textui.TestRunner.run(suite);
261	>	if (!result.wasSuccessful())
262	>	System.exit(1);
263	>	System.gc();
264	>	System.runFinalization();
265	>	}
266	>	}
267	>
268	>	public static TestSuite newTestSuite(Object... suiteOrClasses) {
269	>	TestSuite suite = new TestSuite();
270	>	for (Object suiteOrClass : suiteOrClasses) {
271	>	if (suiteOrClass instanceof TestSuite)
272	>	suite.addTest((TestSuite) suiteOrClass);
273	>	else if (suiteOrClass instanceof Class)
274	>	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
275	>	else
276	>	throw new ClassCastException("not a test suite or class");
277	>	}
278	>	return suite;
279	>	}
280	>
281	>	public static void addNamedTestClasses(TestSuite suite,
282	>	String... testClassNames) {
283	>	for (String testClassName : testClassNames) {
284	>	try {
285	>	Class<?> testClass = Class.forName(testClassName);
286	>	Method m = testClass.getDeclaredMethod("suite",
287	>	new Class<?>[0]);
288	>	suite.addTest(newTestSuite((Test)m.invoke(null)));
289	>	} catch (Exception e) {
290	>	throw new Error("Missing test class", e);
291	>	}
292	>	}
293	>	}
294	>
295	>	public static final double JAVA_CLASS_VERSION;
296	>	public static final String JAVA_SPECIFICATION_VERSION;
297	>	static {
298	>	try {
299	>	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
300	>	new java.security.PrivilegedAction<Double>() {
301	>	public Double run() {
302	>	return Double.valueOf(System.getProperty("java.class.version"));}});
303	>	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
304	>	new java.security.PrivilegedAction<String>() {
305	>	public String run() {
306	>	return System.getProperty("java.specification.version");}});
307	>	} catch (Throwable t) {
308	>	throw new Error(t);
309	>	}
310	>	}
311	>
312	>	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
313	>	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
314	>	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
315	>	public static boolean atLeastJava9() {
316	>	return JAVA_CLASS_VERSION >= 53.0
317	>	// As of 2015-09, java9 still uses 52.0 class file version
318	>	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?(9|[0-9][0-9])$");
319	>	}
320	>	public static boolean atLeastJava10() {
321	>	return JAVA_CLASS_VERSION >= 54.0
322	>	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?[0-9][0-9]$");
323		}
324
325		/**
326	<	* Collects all JSR166 unit tests as one suite
327	<	*/
328	<	public static Test suite ( ) {
329	<	TestSuite suite = new TestSuite("JSR166 Unit Tests");
330	<
331	<	suite.addTest(new TestSuite(AbstractExecutorServiceTest.class));
332	<	suite.addTest(new TestSuite(AbstractQueuedSynchronizerTest.class));
333	<	suite.addTest(new TestSuite(ArrayBlockingQueueTest.class));
334	<	suite.addTest(new TestSuite(AtomicBooleanTest.class));
335	<	suite.addTest(new TestSuite(AtomicIntegerArrayTest.class));
336	<	suite.addTest(new TestSuite(AtomicIntegerFieldUpdaterTest.class));
337	<	suite.addTest(new TestSuite(AtomicIntegerTest.class));
338	<	suite.addTest(new TestSuite(AtomicLongArrayTest.class));
339	<	suite.addTest(new TestSuite(AtomicLongFieldUpdaterTest.class));
340	<	suite.addTest(new TestSuite(AtomicLongTest.class));
341	<	suite.addTest(new TestSuite(AtomicMarkableReferenceTest.class));
342	<	suite.addTest(new TestSuite(AtomicReferenceArrayTest.class));
343	<	suite.addTest(new TestSuite(AtomicReferenceFieldUpdaterTest.class));
344	<	suite.addTest(new TestSuite(AtomicReferenceTest.class));
345	<	suite.addTest(new TestSuite(AtomicStampedReferenceTest.class));
346	<	suite.addTest(new TestSuite(ConcurrentHashMapTest.class));
347	<	suite.addTest(new TestSuite(ConcurrentLinkedQueueTest.class));
348	<	suite.addTest(new TestSuite(CopyOnWriteArrayListTest.class));
349	<	suite.addTest(new TestSuite(CopyOnWriteArraySetTest.class));
350	<	suite.addTest(new TestSuite(CountDownLatchTest.class));
351	<	suite.addTest(new TestSuite(CyclicBarrierTest.class));
352	<	suite.addTest(new TestSuite(DelayQueueTest.class));
353	<	suite.addTest(new TestSuite(ExchangerTest.class));
354	<	suite.addTest(new TestSuite(ExecutorsTest.class));
355	<	suite.addTest(new TestSuite(ExecutorCompletionServiceTest.class));
356	<	suite.addTest(new TestSuite(FutureTaskTest.class));
357	<	suite.addTest(new TestSuite(LinkedBlockingQueueTest.class));
358	<	suite.addTest(new TestSuite(LinkedListTest.class));
359	<	suite.addTest(new TestSuite(LockSupportTest.class));
360	<	suite.addTest(new TestSuite(PriorityBlockingQueueTest.class));
361	<	suite.addTest(new TestSuite(PriorityQueueTest.class));
362	<	suite.addTest(new TestSuite(ReentrantLockTest.class));
363	<	suite.addTest(new TestSuite(ReentrantReadWriteLockTest.class));
364	<	suite.addTest(new TestSuite(ScheduledExecutorTest.class));
365	<	suite.addTest(new TestSuite(SemaphoreTest.class));
366	<	suite.addTest(new TestSuite(SynchronousQueueTest.class));
367	<	suite.addTest(new TestSuite(SystemTest.class));
368	<	suite.addTest(new TestSuite(ThreadLocalTest.class));
369	<	suite.addTest(new TestSuite(ThreadPoolExecutorTest.class));
370	<	suite.addTest(new TestSuite(ThreadTest.class));
371	<	suite.addTest(new TestSuite(TimeUnitTest.class));
372	<
326	>	* Collects all JSR166 unit tests as one suite.
327	>	*/
328	>	public static Test suite() {
329	>	// Java7+ test classes
330	>	TestSuite suite = newTestSuite(
331	>	ForkJoinPoolTest.suite(),
332	>	ForkJoinTaskTest.suite(),
333	>	RecursiveActionTest.suite(),
334	>	RecursiveTaskTest.suite(),
335	>	LinkedTransferQueueTest.suite(),
336	>	PhaserTest.suite(),
337	>	ThreadLocalRandomTest.suite(),
338	>	AbstractExecutorServiceTest.suite(),
339	>	AbstractQueueTest.suite(),
340	>	AbstractQueuedSynchronizerTest.suite(),
341	>	AbstractQueuedLongSynchronizerTest.suite(),
342	>	ArrayBlockingQueueTest.suite(),
343	>	ArrayDequeTest.suite(),
344	>	AtomicBooleanTest.suite(),
345	>	AtomicIntegerArrayTest.suite(),
346	>	AtomicIntegerFieldUpdaterTest.suite(),
347	>	AtomicIntegerTest.suite(),
348	>	AtomicLongArrayTest.suite(),
349	>	AtomicLongFieldUpdaterTest.suite(),
350	>	AtomicLongTest.suite(),
351	>	AtomicMarkableReferenceTest.suite(),
352	>	AtomicReferenceArrayTest.suite(),
353	>	AtomicReferenceFieldUpdaterTest.suite(),
354	>	AtomicReferenceTest.suite(),
355	>	AtomicStampedReferenceTest.suite(),
356	>	ConcurrentHashMapTest.suite(),
357	>	ConcurrentLinkedDequeTest.suite(),
358	>	ConcurrentLinkedQueueTest.suite(),
359	>	ConcurrentSkipListMapTest.suite(),
360	>	ConcurrentSkipListSubMapTest.suite(),
361	>	ConcurrentSkipListSetTest.suite(),
362	>	ConcurrentSkipListSubSetTest.suite(),
363	>	CopyOnWriteArrayListTest.suite(),
364	>	CopyOnWriteArraySetTest.suite(),
365	>	CountDownLatchTest.suite(),
366	>	CyclicBarrierTest.suite(),
367	>	DelayQueueTest.suite(),
368	>	EntryTest.suite(),
369	>	ExchangerTest.suite(),
370	>	ExecutorsTest.suite(),
371	>	ExecutorCompletionServiceTest.suite(),
372	>	FutureTaskTest.suite(),
373	>	LinkedBlockingDequeTest.suite(),
374	>	LinkedBlockingQueueTest.suite(),
375	>	LinkedListTest.suite(),
376	>	LockSupportTest.suite(),
377	>	PriorityBlockingQueueTest.suite(),
378	>	PriorityQueueTest.suite(),
379	>	ReentrantLockTest.suite(),
380	>	ReentrantReadWriteLockTest.suite(),
381	>	ScheduledExecutorTest.suite(),
382	>	ScheduledExecutorSubclassTest.suite(),
383	>	SemaphoreTest.suite(),
384	>	SynchronousQueueTest.suite(),
385	>	SystemTest.suite(),
386	>	ThreadLocalTest.suite(),
387	>	ThreadPoolExecutorTest.suite(),
388	>	ThreadPoolExecutorSubclassTest.suite(),
389	>	ThreadTest.suite(),
390	>	TimeUnitTest.suite(),
391	>	TreeMapTest.suite(),
392	>	TreeSetTest.suite(),
393	>	TreeSubMapTest.suite(),
394	>	TreeSubSetTest.suite());
395	>
396	>	// Java8+ test classes
397	>	if (atLeastJava8()) {
398	>	String[] java8TestClassNames = {
399	>	"Atomic8Test",
400	>	"CompletableFutureTest",
401	>	"ConcurrentHashMap8Test",
402	>	"CountedCompleterTest",
403	>	"DoubleAccumulatorTest",
404	>	"DoubleAdderTest",
405	>	"ForkJoinPool8Test",
406	>	"ForkJoinTask8Test",
407	>	"LongAccumulatorTest",
408	>	"LongAdderTest",
409	>	"SplittableRandomTest",
410	>	"StampedLockTest",
411	>	"SubmissionPublisherTest",
412	>	"ThreadLocalRandom8Test",
413	>	};
414	>	addNamedTestClasses(suite, java8TestClassNames);
415	>	}
416	>
417	>	// Java9+ test classes
418	>	if (atLeastJava9()) {
419	>	String[] java9TestClassNames = {
420	>	// Currently empty, but expecting varhandle tests
421	>	};
422	>	addNamedTestClasses(suite, java9TestClassNames);
423	>	}
424	>
425		return suite;
426		}
427
428	+	/** Returns list of junit-style test method names in given class. */
429	+	public static ArrayList<String> testMethodNames(Class<?> testClass) {
430	+	Method[] methods = testClass.getDeclaredMethods();
431	+	ArrayList<String> names = new ArrayList<String>(methods.length);
432	+	for (Method method : methods) {
433	+	if (method.getName().startsWith("test")
434	+	&& Modifier.isPublic(method.getModifiers())
435	+	// method.getParameterCount() requires jdk8+
436	+	&& method.getParameterTypes().length == 0) {
437	+	names.add(method.getName());
438	+	}
439	+	}
440	+	return names;
441	+	}
442	+
443	+	/**
444	+	* Returns junit-style testSuite for the given test class, but
445	+	* parameterized by passing extra data to each test.
446	+	*/
447	+	public static <ExtraData> Test parameterizedTestSuite
448	+	(Class<? extends JSR166TestCase> testClass,
449	+	Class<ExtraData> dataClass,
450	+	ExtraData data) {
451	+	try {
452	+	TestSuite suite = new TestSuite();
453	+	Constructor c =
454	+	testClass.getDeclaredConstructor(dataClass, String.class);
455	+	for (String methodName : testMethodNames(testClass))
456	+	suite.addTest((Test) c.newInstance(data, methodName));
457	+	return suite;
458	+	} catch (Exception e) {
459	+	throw new Error(e);
460	+	}
461	+	}
462	+
463	+	/**
464	+	* Returns junit-style testSuite for the jdk8 extension of the
465	+	* given test class, but parameterized by passing extra data to
466	+	* each test.  Uses reflection to allow compilation in jdk7.
467	+	*/
468	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
469	+	(Class<? extends JSR166TestCase> testClass,
470	+	Class<ExtraData> dataClass,
471	+	ExtraData data) {
472	+	if (atLeastJava8()) {
473	+	String name = testClass.getName();
474	+	String name8 = name.replaceAll("Test$", "8Test");
475	+	if (name.equals(name8)) throw new Error(name);
476	+	try {
477	+	return (Test)
478	+	Class.forName(name8)
479	+	.getMethod("testSuite", new Class[] { dataClass })
480	+	.invoke(null, data);
481	+	} catch (Exception e) {
482	+	throw new Error(e);
483	+	}
484	+	} else {
485	+	return new TestSuite();
486	+	}
487	+	}
488	+
489	+	// Delays for timing-dependent tests, in milliseconds.
490
491		public static long SHORT_DELAY_MS;
492		public static long SMALL_DELAY_MS;
493		public static long MEDIUM_DELAY_MS;
494		public static long LONG_DELAY_MS;
495
158	–
496		/**
497	<	* Return the shortest timed delay. This could
497	>	* Returns the shortest timed delay. This could
498		* be reimplemented to use for example a Property.
499	<	*/
499	>	*/
500		protected long getShortDelay() {
501	<	return 10;
501	>	return 50;
502		}
503
167	–
504		/**
505	<	* Set delays as multiples of SHORT_DELAY.
505	>	* Sets delays as multiples of SHORT_DELAY.
506		*/
507	<	protected  void setDelays() {
507	>	protected void setDelays() {
508		SHORT_DELAY_MS = getShortDelay();
509	<	SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
509	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
510		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
511	<	LONG_DELAY_MS = SHORT_DELAY_MS * 50;
511	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
512	>	}
513	>
514	>	/**
515	>	* Returns a timeout in milliseconds to be used in tests that
516	>	* verify that operations block or time out.
517	>	*/
518	>	long timeoutMillis() {
519	>	return SHORT_DELAY_MS / 4;
520	>	}
521	>
522	>	/**
523	>	* Returns a new Date instance representing a time at least
524	>	* delayMillis milliseconds in the future.
525	>	*/
526	>	Date delayedDate(long delayMillis) {
527	>	// Add 1 because currentTimeMillis is known to round into the past.
528	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
529		}
530
531		/**
532	<	* Flag set true if any threadAssert methods fail
532	>	* The first exception encountered if any threadAssertXXX method fails.
533		*/
534	<	volatile boolean threadFailed;
534	>	private final AtomicReference<Throwable> threadFailure
535	>	= new AtomicReference<Throwable>(null);
536
537		/**
538	<	* Initialize test to indicate that no thread assertions have failed
538	>	* Records an exception so that it can be rethrown later in the test
539	>	* harness thread, triggering a test case failure.  Only the first
540	>	* failure is recorded; subsequent calls to this method from within
541	>	* the same test have no effect.
542		*/
543	<	public void setUp() {
543	>	public void threadRecordFailure(Throwable t) {
544	>	dumpTestThreads();
545	>	threadFailure.compareAndSet(null, t);
546	>	}
547	>
548	>	public void setUp() {
549		setDelays();
550	<	threadFailed = false;
550	>	}
551	>
552	>	void tearDownFail(String format, Object... args) {
553	>	String msg = toString() + ": " + String.format(format, args);
554	>	System.err.println(msg);
555	>	dumpTestThreads();
556	>	throw new AssertionFailedError(msg);
557		}
558
559		/**
560	<	* Trigger test case failure if any thread assertions have failed
560	>	* Extra checks that get done for all test cases.
561	>	*
562	>	* Triggers test case failure if any thread assertions have failed,
563	>	* by rethrowing, in the test harness thread, any exception recorded
564	>	* earlier by threadRecordFailure.
565	>	*
566	>	* Triggers test case failure if interrupt status is set in the main thread.
567		*/
568	<	public void tearDown() {
569	<	assertFalse(threadFailed);
568	>	public void tearDown() throws Exception {
569	>	Throwable t = threadFailure.getAndSet(null);
570	>	if (t != null) {
571	>	if (t instanceof Error)
572	>	throw (Error) t;
573	>	else if (t instanceof RuntimeException)
574	>	throw (RuntimeException) t;
575	>	else if (t instanceof Exception)
576	>	throw (Exception) t;
577	>	else {
578	>	AssertionFailedError afe =
579	>	new AssertionFailedError(t.toString());
580	>	afe.initCause(t);
581	>	throw afe;
582	>	}
583	>	}
584	>
585	>	if (Thread.interrupted())
586	>	tearDownFail("interrupt status set in main thread");
587	>
588	>	checkForkJoinPoolThreadLeaks();
589	>	}
590	>
591	>	/**
592	>	* Finds missing try { ... } finally { joinPool(e); }
593	>	*/
594	>	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
595	>	Thread[] survivors = new Thread[7];
596	>	int count = Thread.enumerate(survivors);
597	>	for (int i = 0; i < count; i++) {
598	>	Thread thread = survivors[i];
599	>	String name = thread.getName();
600	>	if (name.startsWith("ForkJoinPool-")) {
601	>	// give thread some time to terminate
602	>	thread.join(LONG_DELAY_MS);
603	>	if (thread.isAlive())
604	>	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
605	>	thread);
606	>	}
607	>	}
608	>
609	>	if (!ForkJoinPool.commonPool()
610	>	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
611	>	tearDownFail("ForkJoin common pool thread stuck");
612		}
613
614		/**
615	<	* Fail, also setting status to indicate current testcase should fail
616	<	*/
615	>	* Just like fail(reason), but additionally recording (using
616	>	* threadRecordFailure) any AssertionFailedError thrown, so that
617	>	* the current testcase will fail.
618	>	*/
619		public void threadFail(String reason) {
620	<	threadFailed = true;
621	<	fail(reason);
620	>	try {
621	>	fail(reason);
622	>	} catch (AssertionFailedError t) {
623	>	threadRecordFailure(t);
624	>	throw t;
625	>	}
626		}
627
628		/**
629	<	* If expression not true, set status to indicate current testcase
630	<	* should fail
631	<	*/
629	>	* Just like assertTrue(b), but additionally recording (using
630	>	* threadRecordFailure) any AssertionFailedError thrown, so that
631	>	* the current testcase will fail.
632	>	*/
633		public void threadAssertTrue(boolean b) {
634	<	if (!b) {
212	<	threadFailed = true;
634	>	try {
635		assertTrue(b);
636	+	} catch (AssertionFailedError t) {
637	+	threadRecordFailure(t);
638	+	throw t;
639		}
640		}
641
642		/**
643	<	* If expression not false, set status to indicate current testcase
644	<	* should fail
645	<	*/
643	>	* Just like assertFalse(b), but additionally recording (using
644	>	* threadRecordFailure) any AssertionFailedError thrown, so that
645	>	* the current testcase will fail.
646	>	*/
647		public void threadAssertFalse(boolean b) {
648	<	if (b) {
223	<	threadFailed = true;
648	>	try {
649		assertFalse(b);
650	+	} catch (AssertionFailedError t) {
651	+	threadRecordFailure(t);
652	+	throw t;
653		}
654		}
655
656		/**
657	<	* If argument not null, set status to indicate current testcase
658	<	* should fail
659	<	*/
657	>	* Just like assertNull(x), but additionally recording (using
658	>	* threadRecordFailure) any AssertionFailedError thrown, so that
659	>	* the current testcase will fail.
660	>	*/
661		public void threadAssertNull(Object x) {
662	<	if (x != null) {
234	<	threadFailed = true;
662	>	try {
663		assertNull(x);
664	+	} catch (AssertionFailedError t) {
665	+	threadRecordFailure(t);
666	+	throw t;
667		}
668		}
669
670		/**
671	<	* If arguments not equal, set status to indicate current testcase
672	<	* should fail
673	<	*/
671	>	* Just like assertEquals(x, y), but additionally recording (using
672	>	* threadRecordFailure) any AssertionFailedError thrown, so that
673	>	* the current testcase will fail.
674	>	*/
675		public void threadAssertEquals(long x, long y) {
676	<	if (x != y) {
245	<	threadFailed = true;
676	>	try {
677		assertEquals(x, y);
678	+	} catch (AssertionFailedError t) {
679	+	threadRecordFailure(t);
680	+	throw t;
681		}
682		}
683
684		/**
685	<	* If arguments not equal, set status to indicate current testcase
686	<	* should fail
687	<	*/
685	>	* Just like assertEquals(x, y), but additionally recording (using
686	>	* threadRecordFailure) any AssertionFailedError thrown, so that
687	>	* the current testcase will fail.
688	>	*/
689		public void threadAssertEquals(Object x, Object y) {
690	<	if (x != y && (x == null || !x.equals(y))) {
256	<	threadFailed = true;
690	>	try {
691		assertEquals(x, y);
692	+	} catch (AssertionFailedError fail) {
693	+	threadRecordFailure(fail);
694	+	throw fail;
695	+	} catch (Throwable fail) {
696	+	threadUnexpectedException(fail);
697	+	}
698	+	}
699	+
700	+	/**
701	+	* Just like assertSame(x, y), but additionally recording (using
702	+	* threadRecordFailure) any AssertionFailedError thrown, so that
703	+	* the current testcase will fail.
704	+	*/
705	+	public void threadAssertSame(Object x, Object y) {
706	+	try {
707	+	assertSame(x, y);
708	+	} catch (AssertionFailedError fail) {
709	+	threadRecordFailure(fail);
710	+	throw fail;
711		}
712		}
713
714		/**
715	<	* threadFail with message "should throw exception"
716	<	*/
715	>	* Calls threadFail with message "should throw exception".
716	>	*/
717		public void threadShouldThrow() {
718	<	threadFailed = true;
719	<	fail("should throw exception");
718	>	threadFail("should throw exception");
719	>	}
720	>
721	>	/**
722	>	* Calls threadFail with message "should throw" + exceptionName.
723	>	*/
724	>	public void threadShouldThrow(String exceptionName) {
725	>	threadFail("should throw " + exceptionName);
726	>	}
727	>
728	>	/**
729	>	* Records the given exception using {@link #threadRecordFailure},
730	>	* then rethrows the exception, wrapping it in an
731	>	* AssertionFailedError if necessary.
732	>	*/
733	>	public void threadUnexpectedException(Throwable t) {
734	>	threadRecordFailure(t);
735	>	t.printStackTrace();
736	>	if (t instanceof RuntimeException)
737	>	throw (RuntimeException) t;
738	>	else if (t instanceof Error)
739	>	throw (Error) t;
740	>	else {
741	>	AssertionFailedError afe =
742	>	new AssertionFailedError("unexpected exception: " + t);
743	>	afe.initCause(t);
744	>	throw afe;
745	>	}
746	>	}
747	>
748	>	/**
749	>	* Delays, via Thread.sleep, for the given millisecond delay, but
750	>	* if the sleep is shorter than specified, may re-sleep or yield
751	>	* until time elapses.
752	>	*/
753	>	static void delay(long millis) throws InterruptedException {
754	>	long startTime = System.nanoTime();
755	>	long ns = millis * 1000 * 1000;
756	>	for (;;) {
757	>	if (millis > 0L)
758	>	Thread.sleep(millis);
759	>	else // too short to sleep
760	>	Thread.yield();
761	>	long d = ns - (System.nanoTime() - startTime);
762	>	if (d > 0L)
763	>	millis = d / (1000 * 1000);
764	>	else
765	>	break;
766	>	}
767	>	}
768	>
769	>	/**
770	>	* Allows use of try-with-resources with per-test thread pools.
771	>	*/
772	>	static class PoolCloser<T extends ExecutorService>
773	>	implements AutoCloseable {
774	>	public final T pool;
775	>	public PoolCloser(T pool) { this.pool = pool; }
776	>	public void close() { joinPool(pool); }
777	>	}
778	>
779	>	/**
780	>	* Waits out termination of a thread pool or fails doing so.
781	>	*/
782	>	static void joinPool(ExecutorService pool) {
783	>	try {
784	>	pool.shutdown();
785	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS))
786	>	fail("ExecutorService " + pool +
787	>	" did not terminate in a timely manner");
788	>	} catch (SecurityException ok) {
789	>	// Allowed in case test doesn't have privs
790	>	} catch (InterruptedException fail) {
791	>	fail("Unexpected InterruptedException");
792	>	}
793	>	}
794	>
795	>	/** Like Runnable, but with the freedom to throw anything */
796	>	interface Action { public void run() throws Throwable; }
797	>
798	>	/**
799	>	* Runs all the given actions in parallel, failing if any fail.
800	>	* Useful for running multiple variants of tests that are
801	>	* necessarily individually slow because they must block.
802	>	*/
803	>	void testInParallel(Action ... actions) {
804	>	try (PoolCloser<ExecutorService> poolCloser
805	>	= new PoolCloser<>(Executors.newCachedThreadPool())) {
806	>	ExecutorService pool = poolCloser.pool;
807	>	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
808	>	for (final Action action : actions)
809	>	futures.add(pool.submit(new CheckedRunnable() {
810	>	public void realRun() throws Throwable { action.run();}}));
811	>	for (Future<?> future : futures)
812	>	try {
813	>	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
814	>	} catch (ExecutionException ex) {
815	>	threadUnexpectedException(ex.getCause());
816	>	} catch (Exception ex) {
817	>	threadUnexpectedException(ex);
818	>	}
819	>	}
820	>	}
821	>
822	>	/**
823	>	* A debugging tool to print stack traces of most threads, as jstack does.
824	>	* Uninteresting threads are filtered out.
825	>	*/
826	>	static void dumpTestThreads() {
827	>	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
828	>	System.err.println("------ stacktrace dump start ------");
829	>	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
830	>	String name = info.getThreadName();
831	>	if ("Signal Dispatcher".equals(name))
832	>	continue;
833	>	if ("Reference Handler".equals(name)
834	>	&& info.getLockName().startsWith("java.lang.ref.Reference$Lock"))
835	>	continue;
836	>	if ("Finalizer".equals(name)
837	>	&& info.getLockName().startsWith("java.lang.ref.ReferenceQueue$Lock"))
838	>	continue;
839	>	if ("checkForWedgedTest".equals(name))
840	>	continue;
841	>	System.err.print(info);
842	>	}
843	>	System.err.println("------ stacktrace dump end ------");
844	>	}
845	>
846	>	/**
847	>	* Checks that thread does not terminate within the default
848	>	* millisecond delay of {@code timeoutMillis()}.
849	>	*/
850	>	void assertThreadStaysAlive(Thread thread) {
851	>	assertThreadStaysAlive(thread, timeoutMillis());
852		}
853
854		/**
855	<	* threadFail with message "Unexpected exception"
855	>	* Checks that thread does not terminate within the given millisecond delay.
856		*/
857	<	public void threadUnexpectedException() {
858	<	threadFailed = true;
859	<	fail("Unexpected exception");
857	>	void assertThreadStaysAlive(Thread thread, long millis) {
858	>	try {
859	>	// No need to optimize the failing case via Thread.join.
860	>	delay(millis);
861	>	assertTrue(thread.isAlive());
862	>	} catch (InterruptedException fail) {
863	>	fail("Unexpected InterruptedException");
864	>	}
865		}
866
867	+	/**
868	+	* Checks that the threads do not terminate within the default
869	+	* millisecond delay of {@code timeoutMillis()}.
870	+	*/
871	+	void assertThreadsStayAlive(Thread... threads) {
872	+	assertThreadsStayAlive(timeoutMillis(), threads);
873	+	}
874
875		/**
876	<	* Wait out termination of a thread pool or fail doing so
876	>	* Checks that the threads do not terminate within the given millisecond delay.
877		*/
878	<	public void joinPool(ExecutorService exec) {
878	>	void assertThreadsStayAlive(long millis, Thread... threads) {
879		try {
880	<	exec.shutdown();
881	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
882	<	} catch(InterruptedException ie) {
883	<	fail("Unexpected exception");
880	>	// No need to optimize the failing case via Thread.join.
881	>	delay(millis);
882	>	for (Thread thread : threads)
883	>	assertTrue(thread.isAlive());
884	>	} catch (InterruptedException fail) {
885	>	fail("Unexpected InterruptedException");
886		}
887		}
888
889	+	/**
890	+	* Checks that future.get times out, with the default timeout of
891	+	* {@code timeoutMillis()}.
892	+	*/
893	+	void assertFutureTimesOut(Future future) {
894	+	assertFutureTimesOut(future, timeoutMillis());
895	+	}
896
897		/**
898	<	* fail with message "should throw exception"
899	<	*/
898	>	* Checks that future.get times out, with the given millisecond timeout.
899	>	*/
900	>	void assertFutureTimesOut(Future future, long timeoutMillis) {
901	>	long startTime = System.nanoTime();
902	>	try {
903	>	future.get(timeoutMillis, MILLISECONDS);
904	>	shouldThrow();
905	>	} catch (TimeoutException success) {
906	>	} catch (Exception fail) {
907	>	threadUnexpectedException(fail);
908	>	} finally { future.cancel(true); }
909	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
910	>	}
911	>
912	>	/**
913	>	* Fails with message "should throw exception".
914	>	*/
915		public void shouldThrow() {
916		fail("Should throw exception");
917		}
918
919		/**
920	<	* fail with message "Unexpected exception"
920	>	* Fails with message "should throw " + exceptionName.
921		*/
922	<	public void unexpectedException() {
923	<	fail("Unexpected exception");
922	>	public void shouldThrow(String exceptionName) {
923	>	fail("Should throw " + exceptionName);
924		}
925
305	–
926		/**
927		* The number of elements to place in collections, arrays, etc.
928		*/
929	<	static final int SIZE = 20;
929	>	public static final int SIZE = 20;
930
931		// Some convenient Integer constants
932
933	<	static final Integer zero = new Integer(0);
934	<	static final Integer one = new Integer(1);
935	<	static final Integer two = new Integer(2);
936	<	static final Integer three  = new Integer(3);
937	<	static final Integer four  = new Integer(4);
938	<	static final Integer five  = new Integer(5);
939	<	static final Integer six = new Integer(6);
940	<	static final Integer seven = new Integer(7);
941	<	static final Integer eight = new Integer(8);
942	<	static final Integer nine = new Integer(9);
943	<	static final Integer m1  = new Integer(-1);
944	<	static final Integer m2  = new Integer(-2);
945	<	static final Integer m3  = new Integer(-3);
946	<	static final Integer m4 = new Integer(-4);
947	<	static final Integer m5 = new Integer(-5);
948	<	static final Integer m10 = new Integer(-10);
933	>	public static final Integer zero  = new Integer(0);
934	>	public static final Integer one   = new Integer(1);
935	>	public static final Integer two   = new Integer(2);
936	>	public static final Integer three = new Integer(3);
937	>	public static final Integer four  = new Integer(4);
938	>	public static final Integer five  = new Integer(5);
939	>	public static final Integer six   = new Integer(6);
940	>	public static final Integer seven = new Integer(7);
941	>	public static final Integer eight = new Integer(8);
942	>	public static final Integer nine  = new Integer(9);
943	>	public static final Integer m1  = new Integer(-1);
944	>	public static final Integer m2  = new Integer(-2);
945	>	public static final Integer m3  = new Integer(-3);
946	>	public static final Integer m4  = new Integer(-4);
947	>	public static final Integer m5  = new Integer(-5);
948	>	public static final Integer m6  = new Integer(-6);
949	>	public static final Integer m10 = new Integer(-10);
950	>
951	>	/**
952	>	* Runs Runnable r with a security policy that permits precisely
953	>	* the specified permissions.  If there is no current security
954	>	* manager, the runnable is run twice, both with and without a
955	>	* security manager.  We require that any security manager permit
956	>	* getPolicy/setPolicy.
957	>	*/
958	>	public void runWithPermissions(Runnable r, Permission... permissions) {
959	>	SecurityManager sm = System.getSecurityManager();
960	>	if (sm == null) {
961	>	r.run();
962	>	}
963	>	runWithSecurityManagerWithPermissions(r, permissions);
964	>	}
965
966	+	/**
967	+	* Runs Runnable r with a security policy that permits precisely
968	+	* the specified permissions.  If there is no current security
969	+	* manager, a temporary one is set for the duration of the
970	+	* Runnable.  We require that any security manager permit
971	+	* getPolicy/setPolicy.
972	+	*/
973	+	public void runWithSecurityManagerWithPermissions(Runnable r,
974	+	Permission... permissions) {
975	+	SecurityManager sm = System.getSecurityManager();
976	+	if (sm == null) {
977	+	Policy savedPolicy = Policy.getPolicy();
978	+	try {
979	+	Policy.setPolicy(permissivePolicy());
980	+	System.setSecurityManager(new SecurityManager());
981	+	runWithSecurityManagerWithPermissions(r, permissions);
982	+	} finally {
983	+	System.setSecurityManager(null);
984	+	Policy.setPolicy(savedPolicy);
985	+	}
986	+	} else {
987	+	Policy savedPolicy = Policy.getPolicy();
988	+	AdjustablePolicy policy = new AdjustablePolicy(permissions);
989	+	Policy.setPolicy(policy);
990	+
991	+	try {
992	+	r.run();
993	+	} finally {
994	+	policy.addPermission(new SecurityPermission("setPolicy"));
995	+	Policy.setPolicy(savedPolicy);
996	+	}
997	+	}
998	+	}
999	+
1000	+	/**
1001	+	* Runs a runnable without any permissions.
1002	+	*/
1003	+	public void runWithoutPermissions(Runnable r) {
1004	+	runWithPermissions(r);
1005	+	}
1006
1007		/**
1008		* A security policy where new permissions can be dynamically added
1009		* or all cleared.
1010		*/
1011	<	static class AdjustablePolicy extends java.security.Policy {
1011	>	public static class AdjustablePolicy extends java.security.Policy {
1012		Permissions perms = new Permissions();
1013	<	AdjustablePolicy() { }
1013	>	AdjustablePolicy(Permission... permissions) {
1014	>	for (Permission permission : permissions)
1015	>	perms.add(permission);
1016	>	}
1017		void addPermission(Permission perm) { perms.add(perm); }
1018		void clearPermissions() { perms = new Permissions(); }
1019	<	public PermissionCollection getPermissions(CodeSource cs) {
1020	<	return perms;
1021	<	}
1022	<	public PermissionCollection getPermissions(ProtectionDomain pd) {
1023	<	return perms;
1024	<	}
1025	<	public boolean implies(ProtectionDomain pd, Permission p) {
1026	<	return perms.implies(p);
1027	<	}
1028	<	public void refresh() {}
1019	>	public PermissionCollection getPermissions(CodeSource cs) {
1020	>	return perms;
1021	>	}
1022	>	public PermissionCollection getPermissions(ProtectionDomain pd) {
1023	>	return perms;
1024	>	}
1025	>	public boolean implies(ProtectionDomain pd, Permission p) {
1026	>	return perms.implies(p);
1027	>	}
1028	>	public void refresh() {}
1029	>	public String toString() {
1030	>	List<Permission> ps = new ArrayList<Permission>();
1031	>	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1032	>	ps.add(e.nextElement());
1033	>	return "AdjustablePolicy with permissions " + ps;
1034	>	}
1035		}
1036
1037	+	/**
1038	+	* Returns a policy containing all the permissions we ever need.
1039	+	*/
1040	+	public static Policy permissivePolicy() {
1041	+	return new AdjustablePolicy
1042	+	// Permissions j.u.c. needs directly
1043	+	(new RuntimePermission("modifyThread"),
1044	+	new RuntimePermission("getClassLoader"),
1045	+	new RuntimePermission("setContextClassLoader"),
1046	+	// Permissions needed to change permissions!
1047	+	new SecurityPermission("getPolicy"),
1048	+	new SecurityPermission("setPolicy"),
1049	+	new RuntimePermission("setSecurityManager"),
1050	+	// Permissions needed by the junit test harness
1051	+	new RuntimePermission("accessDeclaredMembers"),
1052	+	new PropertyPermission("*", "read"),
1053	+	new java.io.FilePermission("<<ALL FILES>>", "read"));
1054	+	}
1055
1056	<	// Some convenient Runnable classes
1056	>	/**
1057	>	* Sleeps until the given time has elapsed.
1058	>	* Throws AssertionFailedError if interrupted.
1059	>	*/
1060	>	void sleep(long millis) {
1061	>	try {
1062	>	delay(millis);
1063	>	} catch (InterruptedException fail) {
1064	>	AssertionFailedError afe =
1065	>	new AssertionFailedError("Unexpected InterruptedException");
1066	>	afe.initCause(fail);
1067	>	throw afe;
1068	>	}
1069	>	}
1070
1071	<	static class NoOpRunnable implements Runnable {
1072	<	public void run() {}
1071	>	/**
1072	>	* Spin-waits up to the specified number of milliseconds for the given
1073	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1074	>	*/
1075	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1076	>	long startTime = System.nanoTime();
1077	>	for (;;) {
1078	>	Thread.State s = thread.getState();
1079	>	if (s == Thread.State.BLOCKED ||
1080	>	s == Thread.State.WAITING ||
1081	>	s == Thread.State.TIMED_WAITING)
1082	>	return;
1083	>	else if (s == Thread.State.TERMINATED)
1084	>	fail("Unexpected thread termination");
1085	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1086	>	threadAssertTrue(thread.isAlive());
1087	>	return;
1088	>	}
1089	>	Thread.yield();
1090	>	}
1091		}
1092
1093	<	static class NoOpCallable implements Callable {
1094	<	public Object call() { return Boolean.TRUE; }
1093	>	/**
1094	>	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
1095	>	* state: BLOCKED, WAITING, or TIMED_WAITING.
1096	>	*/
1097	>	void waitForThreadToEnterWaitState(Thread thread) {
1098	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
1099		}
1100
1101	<	static final String TEST_STRING = "a test string";
1101	>	/**
1102	>	* Returns the number of milliseconds since time given by
1103	>	* startNanoTime, which must have been previously returned from a
1104	>	* call to {@link System#nanoTime()}.
1105	>	*/
1106	>	static long millisElapsedSince(long startNanoTime) {
1107	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1108	>	}
1109
1110	<	static class StringTask implements Callable<String> {
1111	<	public String call() { return TEST_STRING; }
1110	>	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1111	>	//         long startTime = System.nanoTime();
1112	>	//         try {
1113	>	//             r.run();
1114	>	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1115	>	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1116	>	//             throw new AssertionFailedError("did not return promptly");
1117	>	//     }
1118	>
1119	>	//     void assertTerminatesPromptly(Runnable r) {
1120	>	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1121	>	//     }
1122	>
1123	>	/**
1124	>	* Checks that timed f.get() returns the expected value, and does not
1125	>	* wait for the timeout to elapse before returning.
1126	>	*/
1127	>	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1128	>	long startTime = System.nanoTime();
1129	>	try {
1130	>	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1131	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1132	>	if (millisElapsedSince(startTime) > timeoutMillis/2)
1133	>	throw new AssertionFailedError("timed get did not return promptly");
1134		}
1135
1136	<	static class NPETask implements Callable<String> {
1137	<	public String call() { throw new NullPointerException(); }
1136	>	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1137	>	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1138		}
1139
1140	<	static class CallableOne implements Callable<Integer> {
1141	<	public Integer call() { return one; }
1140	>	/**
1141	>	* Returns a new started daemon Thread running the given runnable.
1142	>	*/
1143	>	Thread newStartedThread(Runnable runnable) {
1144	>	Thread t = new Thread(runnable);
1145	>	t.setDaemon(true);
1146	>	t.start();
1147	>	return t;
1148		}
1149
1150	<	class ShortRunnable implements Runnable {
1151	<	public void run() {
1152	<	try {
1153	<	Thread.sleep(SHORT_DELAY_MS);
1154	<	}
1155	<	catch(Exception e) {
1156	<	threadUnexpectedException();
1150	>	/**
1151	>	* Waits for the specified time (in milliseconds) for the thread
1152	>	* to terminate (using {@link Thread#join(long)}), else interrupts
1153	>	* the thread (in the hope that it may terminate later) and fails.
1154	>	*/
1155	>	void awaitTermination(Thread t, long timeoutMillis) {
1156	>	try {
1157	>	t.join(timeoutMillis);
1158	>	} catch (InterruptedException fail) {
1159	>	threadUnexpectedException(fail);
1160	>	} finally {
1161	>	if (t.getState() != Thread.State.TERMINATED) {
1162	>	t.interrupt();
1163	>	fail("Test timed out");
1164		}
1165		}
1166		}
1167
1168	<	class ShortInterruptedRunnable implements Runnable {
1169	<	public void run() {
1168	>	/**
1169	>	* Waits for LONG_DELAY_MS milliseconds for the thread to
1170	>	* terminate (using {@link Thread#join(long)}), else interrupts
1171	>	* the thread (in the hope that it may terminate later) and fails.
1172	>	*/
1173	>	void awaitTermination(Thread t) {
1174	>	awaitTermination(t, LONG_DELAY_MS);
1175	>	}
1176	>
1177	>	// Some convenient Runnable classes
1178	>
1179	>	public abstract class CheckedRunnable implements Runnable {
1180	>	protected abstract void realRun() throws Throwable;
1181	>
1182	>	public final void run() {
1183		try {
1184	<	Thread.sleep(SHORT_DELAY_MS);
1185	<	threadShouldThrow();
1186	<	}
394	<	catch(InterruptedException success) {
1184	>	realRun();
1185	>	} catch (Throwable fail) {
1186	>	threadUnexpectedException(fail);
1187		}
1188		}
1189		}
1190
1191	<	class SmallRunnable implements Runnable {
1192	<	public void run() {
1191	>	public abstract class RunnableShouldThrow implements Runnable {
1192	>	protected abstract void realRun() throws Throwable;
1193	>
1194	>	final Class<?> exceptionClass;
1195	>
1196	>	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
1197	>	this.exceptionClass = exceptionClass;
1198	>	}
1199	>
1200	>	public final void run() {
1201		try {
1202	<	Thread.sleep(SMALL_DELAY_MS);
1203	<	}
1204	<	catch(Exception e) {
1205	<	threadUnexpectedException();
1202	>	realRun();
1203	>	threadShouldThrow(exceptionClass.getSimpleName());
1204	>	} catch (Throwable t) {
1205	>	if (! exceptionClass.isInstance(t))
1206	>	threadUnexpectedException(t);
1207		}
1208		}
1209		}
1210
1211	<	class SmallPossiblyInterruptedRunnable implements Runnable {
1212	<	public void run() {
1211	>	public abstract class ThreadShouldThrow extends Thread {
1212	>	protected abstract void realRun() throws Throwable;
1213	>
1214	>	final Class<?> exceptionClass;
1215	>
1216	>	<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) {
1217	>	this.exceptionClass = exceptionClass;
1218	>	}
1219	>
1220	>	public final void run() {
1221		try {
1222	<	Thread.sleep(SMALL_DELAY_MS);
1223	<	}
1224	<	catch(Exception e) {
1222	>	realRun();
1223	>	threadShouldThrow(exceptionClass.getSimpleName());
1224	>	} catch (Throwable t) {
1225	>	if (! exceptionClass.isInstance(t))
1226	>	threadUnexpectedException(t);
1227		}
1228		}
1229		}
1230
1231	<	class SmallCallable implements Callable {
1232	<	public Object call() {
1231	>	public abstract class CheckedInterruptedRunnable implements Runnable {
1232	>	protected abstract void realRun() throws Throwable;
1233	>
1234	>	public final void run() {
1235		try {
1236	<	Thread.sleep(SMALL_DELAY_MS);
1237	<	}
1238	<	catch(Exception e) {
1239	<	threadUnexpectedException();
1236	>	realRun();
1237	>	threadShouldThrow("InterruptedException");
1238	>	} catch (InterruptedException success) {
1239	>	threadAssertFalse(Thread.interrupted());
1240	>	} catch (Throwable fail) {
1241	>	threadUnexpectedException(fail);
1242		}
428	–	return Boolean.TRUE;
1243		}
1244		}
1245
1246	<	class SmallInterruptedRunnable implements Runnable {
1247	<	public void run() {
1246	>	public abstract class CheckedCallable<T> implements Callable<T> {
1247	>	protected abstract T realCall() throws Throwable;
1248	>
1249	>	public final T call() {
1250		try {
1251	<	Thread.sleep(SMALL_DELAY_MS);
1252	<	threadShouldThrow();
1253	<	}
1254	<	catch(InterruptedException success) {
1251	>	return realCall();
1252	>	} catch (Throwable fail) {
1253	>	threadUnexpectedException(fail);
1254	>	return null;
1255		}
1256		}
1257		}
1258
1259	+	public abstract class CheckedInterruptedCallable<T>
1260	+	implements Callable<T> {
1261	+	protected abstract T realCall() throws Throwable;
1262
1263	<	class MediumRunnable implements Runnable {
445	<	public void run() {
1263	>	public final T call() {
1264		try {
1265	<	Thread.sleep(MEDIUM_DELAY_MS);
1266	<	}
1267	<	catch(Exception e) {
1268	<	threadUnexpectedException();
1265	>	T result = realCall();
1266	>	threadShouldThrow("InterruptedException");
1267	>	return result;
1268	>	} catch (InterruptedException success) {
1269	>	threadAssertFalse(Thread.interrupted());
1270	>	} catch (Throwable fail) {
1271	>	threadUnexpectedException(fail);
1272		}
1273	+	return null;
1274		}
1275		}
1276
1277	<	class MediumInterruptedRunnable implements Runnable {
1278	<	public void run() {
1277	>	public static class NoOpRunnable implements Runnable {
1278	>	public void run() {}
1279	>	}
1280	>
1281	>	public static class NoOpCallable implements Callable {
1282	>	public Object call() { return Boolean.TRUE; }
1283	>	}
1284	>
1285	>	public static final String TEST_STRING = "a test string";
1286	>
1287	>	public static class StringTask implements Callable<String> {
1288	>	final String value;
1289	>	public StringTask() { this(TEST_STRING); }
1290	>	public StringTask(String value) { this.value = value; }
1291	>	public String call() { return value; }
1292	>	}
1293	>
1294	>	public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1295	>	return new CheckedCallable<String>() {
1296	>	protected String realCall() {
1297	>	try {
1298	>	latch.await();
1299	>	} catch (InterruptedException quittingTime) {}
1300	>	return TEST_STRING;
1301	>	}};
1302	>	}
1303	>
1304	>	public Runnable countDowner(final CountDownLatch latch) {
1305	>	return new CheckedRunnable() {
1306	>	public void realRun() throws InterruptedException {
1307	>	latch.countDown();
1308	>	}};
1309	>	}
1310	>
1311	>	public Runnable awaiter(final CountDownLatch latch) {
1312	>	return new CheckedRunnable() {
1313	>	public void realRun() throws InterruptedException {
1314	>	await(latch);
1315	>	}};
1316	>	}
1317	>
1318	>	public void await(CountDownLatch latch) {
1319	>	try {
1320	>	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1321	>	} catch (Throwable fail) {
1322	>	threadUnexpectedException(fail);
1323	>	}
1324	>	}
1325	>
1326	>	public void await(Semaphore semaphore) {
1327	>	try {
1328	>	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1329	>	} catch (Throwable fail) {
1330	>	threadUnexpectedException(fail);
1331	>	}
1332	>	}
1333	>
1334	>	//     /**
1335	>	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1336	>	//      */
1337	>	//     public void await(AtomicBoolean flag) {
1338	>	//         await(flag, LONG_DELAY_MS);
1339	>	//     }
1340	>
1341	>	//     /**
1342	>	//      * Spin-waits up to the specified timeout until flag becomes true.
1343	>	//      */
1344	>	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1345	>	//         long startTime = System.nanoTime();
1346	>	//         while (!flag.get()) {
1347	>	//             if (millisElapsedSince(startTime) > timeoutMillis)
1348	>	//                 throw new AssertionFailedError("timed out");
1349	>	//             Thread.yield();
1350	>	//         }
1351	>	//     }
1352	>
1353	>	public static class NPETask implements Callable<String> {
1354	>	public String call() { throw new NullPointerException(); }
1355	>	}
1356	>
1357	>	public static class CallableOne implements Callable<Integer> {
1358	>	public Integer call() { return one; }
1359	>	}
1360	>
1361	>	public class ShortRunnable extends CheckedRunnable {
1362	>	protected void realRun() throws Throwable {
1363	>	delay(SHORT_DELAY_MS);
1364	>	}
1365	>	}
1366	>
1367	>	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1368	>	protected void realRun() throws InterruptedException {
1369	>	delay(SHORT_DELAY_MS);
1370	>	}
1371	>	}
1372	>
1373	>	public class SmallRunnable extends CheckedRunnable {
1374	>	protected void realRun() throws Throwable {
1375	>	delay(SMALL_DELAY_MS);
1376	>	}
1377	>	}
1378	>
1379	>	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1380	>	protected void realRun() {
1381		try {
1382	<	Thread.sleep(MEDIUM_DELAY_MS);
1383	<	threadShouldThrow();
460	<	}
461	<	catch(InterruptedException success) {
462	<	}
1382	>	delay(SMALL_DELAY_MS);
1383	>	} catch (InterruptedException ok) {}
1384		}
1385		}
1386
1387	<	class MediumPossiblyInterruptedRunnable implements Runnable {
1388	<	public void run() {
1387	>	public class SmallCallable extends CheckedCallable {
1388	>	protected Object realCall() throws InterruptedException {
1389	>	delay(SMALL_DELAY_MS);
1390	>	return Boolean.TRUE;
1391	>	}
1392	>	}
1393	>
1394	>	public class MediumRunnable extends CheckedRunnable {
1395	>	protected void realRun() throws Throwable {
1396	>	delay(MEDIUM_DELAY_MS);
1397	>	}
1398	>	}
1399	>
1400	>	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1401	>	protected void realRun() throws InterruptedException {
1402	>	delay(MEDIUM_DELAY_MS);
1403	>	}
1404	>	}
1405	>
1406	>	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1407	>	return new CheckedRunnable() {
1408	>	protected void realRun() {
1409	>	try {
1410	>	delay(timeoutMillis);
1411	>	} catch (InterruptedException ok) {}
1412	>	}};
1413	>	}
1414	>
1415	>	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1416	>	protected void realRun() {
1417		try {
1418	<	Thread.sleep(MEDIUM_DELAY_MS);
1419	<	}
471	<	catch(InterruptedException success) {
472	<	}
1418	>	delay(MEDIUM_DELAY_MS);
1419	>	} catch (InterruptedException ok) {}
1420		}
1421		}
1422
1423	<	class LongPossiblyInterruptedRunnable implements Runnable {
1424	<	public void run() {
1423	>	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1424	>	protected void realRun() {
1425		try {
1426	<	Thread.sleep(LONG_DELAY_MS);
1427	<	}
481	<	catch(InterruptedException success) {
482	<	}
1426	>	delay(LONG_DELAY_MS);
1427	>	} catch (InterruptedException ok) {}
1428		}
1429		}
1430
1431		/**
1432		* For use as ThreadFactory in constructors
1433		*/
1434	<	static class SimpleThreadFactory implements ThreadFactory{
1435	<	public Thread newThread(Runnable r){
1434	>	public static class SimpleThreadFactory implements ThreadFactory {
1435	>	public Thread newThread(Runnable r) {
1436		return new Thread(r);
1437	<	}
1437	>	}
1438	>	}
1439	>
1440	>	public interface TrackedRunnable extends Runnable {
1441	>	boolean isDone();
1442	>	}
1443	>
1444	>	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1445	>	return new TrackedRunnable() {
1446	>	private volatile boolean done = false;
1447	>	public boolean isDone() { return done; }
1448	>	public void run() {
1449	>	try {
1450	>	delay(timeoutMillis);
1451	>	done = true;
1452	>	} catch (InterruptedException ok) {}
1453	>	}
1454	>	};
1455		}
1456
1457	<	static class TrackedShortRunnable implements Runnable {
1458	<	volatile boolean done = false;
1457	>	public static class TrackedShortRunnable implements Runnable {
1458	>	public volatile boolean done = false;
1459		public void run() {
1460		try {
1461	<	Thread.sleep(SMALL_DELAY_MS);
1461	>	delay(SHORT_DELAY_MS);
1462		done = true;
1463	<	} catch(Exception e){
502	<	}
1463	>	} catch (InterruptedException ok) {}
1464		}
1465		}
1466
1467	<	static class TrackedMediumRunnable implements Runnable {
1468	<	volatile boolean done = false;
1467	>	public static class TrackedSmallRunnable implements Runnable {
1468	>	public volatile boolean done = false;
1469		public void run() {
1470		try {
1471	<	Thread.sleep(MEDIUM_DELAY_MS);
1471	>	delay(SMALL_DELAY_MS);
1472		done = true;
1473	<	} catch(Exception e){
513	<	}
1473	>	} catch (InterruptedException ok) {}
1474		}
1475		}
1476
1477	<	static class TrackedLongRunnable implements Runnable {
1478	<	volatile boolean done = false;
1477	>	public static class TrackedMediumRunnable implements Runnable {
1478	>	public volatile boolean done = false;
1479		public void run() {
1480		try {
1481	<	Thread.sleep(LONG_DELAY_MS);
1481	>	delay(MEDIUM_DELAY_MS);
1482		done = true;
1483	<	} catch(Exception e){
524	<	}
1483	>	} catch (InterruptedException ok) {}
1484		}
1485		}
1486
1487	<	static class TrackedNoOpRunnable implements Runnable {
1488	<	volatile boolean done = false;
1487	>	public static class TrackedLongRunnable implements Runnable {
1488	>	public volatile boolean done = false;
1489	>	public void run() {
1490	>	try {
1491	>	delay(LONG_DELAY_MS);
1492	>	done = true;
1493	>	} catch (InterruptedException ok) {}
1494	>	}
1495	>	}
1496	>
1497	>	public static class TrackedNoOpRunnable implements Runnable {
1498	>	public volatile boolean done = false;
1499		public void run() {
1500		done = true;
1501		}
1502		}
1503
1504	<	static class TrackedCallable implements Callable {
1505	<	volatile boolean done = false;
1504	>	public static class TrackedCallable implements Callable {
1505	>	public volatile boolean done = false;
1506		public Object call() {
1507		try {
1508	<	Thread.sleep(SMALL_DELAY_MS);
1508	>	delay(SMALL_DELAY_MS);
1509		done = true;
1510	<	} catch(Exception e){
542	<	}
1510	>	} catch (InterruptedException ok) {}
1511		return Boolean.TRUE;
1512		}
1513		}
1514
1515	+	/**
1516	+	* Analog of CheckedRunnable for RecursiveAction
1517	+	*/
1518	+	public abstract class CheckedRecursiveAction extends RecursiveAction {
1519	+	protected abstract void realCompute() throws Throwable;
1520	+
1521	+	@Override protected final void compute() {
1522	+	try {
1523	+	realCompute();
1524	+	} catch (Throwable fail) {
1525	+	threadUnexpectedException(fail);
1526	+	}
1527	+	}
1528	+	}
1529	+
1530	+	/**
1531	+	* Analog of CheckedCallable for RecursiveTask
1532	+	*/
1533	+	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1534	+	protected abstract T realCompute() throws Throwable;
1535	+
1536	+	@Override protected final T compute() {
1537	+	try {
1538	+	return realCompute();
1539	+	} catch (Throwable fail) {
1540	+	threadUnexpectedException(fail);
1541	+	return null;
1542	+	}
1543	+	}
1544	+	}
1545
1546		/**
1547		* For use as RejectedExecutionHandler in constructors
1548		*/
1549	<	static class NoOpREHandler implements RejectedExecutionHandler{
1550	<	public void rejectedExecution(Runnable r, ThreadPoolExecutor executor){}
1549	>	public static class NoOpREHandler implements RejectedExecutionHandler {
1550	>	public void rejectedExecution(Runnable r,
1551	>	ThreadPoolExecutor executor) {}
1552	>	}
1553	>
1554	>	/**
1555	>	* A CyclicBarrier that uses timed await and fails with
1556	>	* AssertionFailedErrors instead of throwing checked exceptions.
1557	>	*/
1558	>	public class CheckedBarrier extends CyclicBarrier {
1559	>	public CheckedBarrier(int parties) { super(parties); }
1560	>
1561	>	public int await() {
1562	>	try {
1563	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1564	>	} catch (TimeoutException timedOut) {
1565	>	throw new AssertionFailedError("timed out");
1566	>	} catch (Exception fail) {
1567	>	AssertionFailedError afe =
1568	>	new AssertionFailedError("Unexpected exception: " + fail);
1569	>	afe.initCause(fail);
1570	>	throw afe;
1571	>	}
1572	>	}
1573	>	}
1574	>
1575	>	void checkEmpty(BlockingQueue q) {
1576	>	try {
1577	>	assertTrue(q.isEmpty());
1578	>	assertEquals(0, q.size());
1579	>	assertNull(q.peek());
1580	>	assertNull(q.poll());
1581	>	assertNull(q.poll(0, MILLISECONDS));
1582	>	assertEquals(q.toString(), "[]");
1583	>	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1584	>	assertFalse(q.iterator().hasNext());
1585	>	try {
1586	>	q.element();
1587	>	shouldThrow();
1588	>	} catch (NoSuchElementException success) {}
1589	>	try {
1590	>	q.iterator().next();
1591	>	shouldThrow();
1592	>	} catch (NoSuchElementException success) {}
1593	>	try {
1594	>	q.remove();
1595	>	shouldThrow();
1596	>	} catch (NoSuchElementException success) {}
1597	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1598	>	}
1599	>
1600	>	void assertSerialEquals(Object x, Object y) {
1601	>	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1602	>	}
1603	>
1604	>	void assertNotSerialEquals(Object x, Object y) {
1605	>	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1606	>	}
1607	>
1608	>	byte[] serialBytes(Object o) {
1609	>	try {
1610	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1611	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1612	>	oos.writeObject(o);
1613	>	oos.flush();
1614	>	oos.close();
1615	>	return bos.toByteArray();
1616	>	} catch (Throwable fail) {
1617	>	threadUnexpectedException(fail);
1618	>	return new byte[0];
1619	>	}
1620	>	}
1621	>
1622	>	@SuppressWarnings("unchecked")
1623	>	<T> T serialClone(T o) {
1624	>	try {
1625	>	ObjectInputStream ois = new ObjectInputStream
1626	>	(new ByteArrayInputStream(serialBytes(o)));
1627	>	T clone = (T) ois.readObject();
1628	>	assertSame(o.getClass(), clone.getClass());
1629	>	return clone;
1630	>	} catch (Throwable fail) {
1631	>	threadUnexpectedException(fail);
1632	>	return null;
1633	>	}
1634	>	}
1635	>
1636	>	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1637	>	Runnable... throwingActions) {
1638	>	for (Runnable throwingAction : throwingActions) {
1639	>	boolean threw = false;
1640	>	try { throwingAction.run(); }
1641	>	catch (Throwable t) {
1642	>	threw = true;
1643	>	if (!expectedExceptionClass.isInstance(t)) {
1644	>	AssertionFailedError afe =
1645	>	new AssertionFailedError
1646	>	("Expected " + expectedExceptionClass.getName() +
1647	>	", got " + t.getClass().getName());
1648	>	afe.initCause(t);
1649	>	threadUnexpectedException(afe);
1650	>	}
1651	>	}
1652	>	if (!threw)
1653	>	shouldThrow(expectedExceptionClass.getName());
1654	>	}
1655	>	}
1656	>
1657	>	public void assertIteratorExhausted(Iterator<?> it) {
1658	>	try {
1659	>	it.next();
1660	>	shouldThrow();
1661	>	} catch (NoSuchElementException success) {}
1662	>	assertFalse(it.hasNext());
1663		}
554	–
555	–
1664		}

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