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Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.48 by jsr166, Tue Dec 1 22:51:44 2009 UTC vs.
Revision 1.176 by jsr166, Mon Oct 12 07:16:39 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.*;
9		import static java.util.concurrent.TimeUnit.MILLISECONDS;
10	<	import java.io.*;
11	<	import java.security.*;
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.nio.file.Files;
24	>	import java.nio.file.Paths;
25	>	import java.security.CodeSource;
26	>	import java.security.Permission;
27	>	import java.security.PermissionCollection;
28	>	import java.security.Permissions;
29	>	import java.security.Policy;
30	>	import java.security.ProtectionDomain;
31	>	import java.security.SecurityPermission;
32	>	import java.util.ArrayList;
33	>	import java.util.Arrays;
34	>	import java.util.Date;
35	>	import java.util.Enumeration;
36	>	import java.util.Iterator;
37	>	import java.util.List;
38	>	import java.util.NoSuchElementException;
39	>	import java.util.PropertyPermission;
40	>	import java.util.concurrent.BlockingQueue;
41	>	import java.util.concurrent.Callable;
42	>	import java.util.concurrent.CountDownLatch;
43	>	import java.util.concurrent.CyclicBarrier;
44	>	import java.util.concurrent.ExecutionException;
45	>	import java.util.concurrent.Executors;
46	>	import java.util.concurrent.ExecutorService;
47	>	import java.util.concurrent.ForkJoinPool;
48	>	import java.util.concurrent.Future;
49	>	import java.util.concurrent.RecursiveAction;
50	>	import java.util.concurrent.RecursiveTask;
51	>	import java.util.concurrent.RejectedExecutionHandler;
52	>	import java.util.concurrent.Semaphore;
53	>	import java.util.concurrent.ThreadFactory;
54	>	import java.util.concurrent.ThreadPoolExecutor;
55	>	import java.util.concurrent.TimeoutException;
56	>	import java.util.concurrent.atomic.AtomicReference;
57	>	import java.util.regex.Matcher;
58	>	import java.util.regex.Pattern;
59	>
60	>	import junit.framework.AssertionFailedError;
61	>	import junit.framework.Test;
62	>	import junit.framework.TestCase;
63	>	import junit.framework.TestResult;
64	>	import junit.framework.TestSuite;
65
66		/**
67		* Base class for JSR166 Junit TCK tests.  Defines some constants,
#	Line 23 | Line 73 | import java.security.*;
73		*
74		* <ol>
75		*
76	<	* <li> All assertions in code running in generated threads must use
76	>	* <li>All assertions in code running in generated threads must use
77		* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
78		* #threadAssertEquals}, or {@link #threadAssertNull}, (not
79	<	* <tt>fail</tt>, <tt>assertTrue</tt>, etc.) It is OK (but not
79	>	* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
80		* particularly recommended) for other code to use these forms too.
81		* Only the most typically used JUnit assertion methods are defined
82	<	* this way, but enough to live with.</li>
82	>	* this way, but enough to live with.
83		*
84	<	* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
85	<	* to invoke <tt>super.setUp</tt> and <tt>super.tearDown</tt> within
84	>	* <li>If you override {@link #setUp} or {@link #tearDown}, make sure
85	>	* to invoke {@code super.setUp} and {@code super.tearDown} within
86		* them. These methods are used to clear and check for thread
87	<	* assertion failures.</li>
87	>	* assertion failures.
88		*
89	<	* <li>All delays and timeouts must use one of the constants <tt>
90	<	* SHORT_DELAY_MS</tt>, <tt> SMALL_DELAY_MS</tt>, <tt> MEDIUM_DELAY_MS</tt>,
91	<	* <tt> LONG_DELAY_MS</tt>. The idea here is that a SHORT is always
89	>	* <li>All delays and timeouts must use one of the constants {@code
90	>	* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
91	>	* {@code LONG_DELAY_MS}. The idea here is that a SHORT is always
92		* discriminable from zero time, and always allows enough time for the
93		* small amounts of computation (creating a thread, calling a few
94		* methods, etc) needed to reach a timeout point. Similarly, a SMALL
95		* is always discriminable as larger than SHORT and smaller than
96		* MEDIUM.  And so on. These constants are set to conservative values,
97		* but even so, if there is ever any doubt, they can all be increased
98	<	* in one spot to rerun tests on slower platforms.</li>
98	>	* in one spot to rerun tests on slower platforms.
99		*
100	<	* <li> All threads generated must be joined inside each test case
101	<	* method (or <tt>fail</tt> to do so) before returning from the
102	<	* method. The <tt> joinPool</tt> method can be used to do this when
103	<	* using Executors.</li>
100	>	* <li>All threads generated must be joined inside each test case
101	>	* method (or {@code fail} to do so) before returning from the
102	>	* method. The {@code joinPool} method can be used to do this when
103	>	* using Executors.
104		*
105		* </ol>
106		*
107	<	* <p> <b>Other notes</b>
107	>	* <p><b>Other notes</b>
108		* <ul>
109		*
110	<	* <li> Usually, there is one testcase method per JSR166 method
110	>	* <li>Usually, there is one testcase method per JSR166 method
111		* covering "normal" operation, and then as many exception-testing
112		* methods as there are exceptions the method can throw. Sometimes
113		* there are multiple tests per JSR166 method when the different
114		* "normal" behaviors differ significantly. And sometimes testcases
115		* cover multiple methods when they cannot be tested in
116	<	* isolation.</li>
116	>	* isolation.
117		*
118	<	* <li> The documentation style for testcases is to provide as javadoc
118	>	* <li>The documentation style for testcases is to provide as javadoc
119		* a simple sentence or two describing the property that the testcase
120		* method purports to test. The javadocs do not say anything about how
121	<	* the property is tested. To find out, read the code.</li>
121	>	* the property is tested. To find out, read the code.
122		*
123	<	* <li> These tests are "conformance tests", and do not attempt to
123	>	* <li>These tests are "conformance tests", and do not attempt to
124		* test throughput, latency, scalability or other performance factors
125		* (see the separate "jtreg" tests for a set intended to check these
126		* for the most central aspects of functionality.) So, most tests use
127		* the smallest sensible numbers of threads, collection sizes, etc
128	<	* needed to check basic conformance.</li>
128	>	* needed to check basic conformance.
129		*
130		* <li>The test classes currently do not declare inclusion in
131		* any particular package to simplify things for people integrating
132	<	* them in TCK test suites.</li>
132	>	* them in TCK test suites.
133		*
134	<	* <li> As a convenience, the <tt>main</tt> of this class (JSR166TestCase)
135	<	* runs all JSR166 unit tests.</li>
134	>	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
135	>	* runs all JSR166 unit tests.
136		*
137		* </ul>
138		*/
139		public class JSR166TestCase extends TestCase {
140	+	private static final boolean useSecurityManager =
141	+	Boolean.getBoolean("jsr166.useSecurityManager");
142	+
143	+	protected static final boolean expensiveTests =
144	+	Boolean.getBoolean("jsr166.expensiveTests");
145	+
146	+	/**
147	+	* If true, also run tests that are not part of the official tck
148	+	* because they test unspecified implementation details.
149	+	*/
150	+	protected static final boolean testImplementationDetails =
151	+	Boolean.getBoolean("jsr166.testImplementationDetails");
152	+
153	+	/**
154	+	* If true, report on stdout all "slow" tests, that is, ones that
155	+	* take more than profileThreshold milliseconds to execute.
156	+	*/
157	+	private static final boolean profileTests =
158	+	Boolean.getBoolean("jsr166.profileTests");
159	+
160	+	/**
161	+	* The number of milliseconds that tests are permitted for
162	+	* execution without being reported, when profileTests is set.
163	+	*/
164	+	private static final long profileThreshold =
165	+	Long.getLong("jsr166.profileThreshold", 100);
166	+
167	+	/**
168	+	* The number of repetitions per test (for tickling rare bugs).
169	+	*/
170	+	private static final int runsPerTest =
171	+	Integer.getInteger("jsr166.runsPerTest", 1);
172	+
173	+	/**
174	+	* The number of repetitions of the test suite (for finding leaks?).
175	+	*/
176	+	private static final int suiteRuns =
177	+	Integer.getInteger("jsr166.suiteRuns", 1);
178	+
179	+	public JSR166TestCase() { super(); }
180	+	public JSR166TestCase(String name) { super(name); }
181	+
182	+	/**
183	+	* A filter for tests to run, matching strings of the form
184	+	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
185	+	* Usefully combined with jsr166.runsPerTest.
186	+	*/
187	+	private static final Pattern methodFilter = methodFilter();
188	+
189	+	private static Pattern methodFilter() {
190	+	String regex = System.getProperty("jsr166.methodFilter");
191	+	return (regex == null) ? null : Pattern.compile(regex);
192	+	}
193	+
194	+	// Instrumentation to debug very rare, but very annoying hung test runs.
195	+	static volatile TestCase currentTestCase;
196	+	// static volatile int currentRun = 0;
197	+	static {
198	+	Runnable checkForWedgedTest = new Runnable() { public void run() {
199	+	// Avoid spurious reports with enormous runsPerTest.
200	+	// A single test case run should never take more than 1 second.
201	+	// But let's cap it at the high end too ...
202	+	final int timeoutMinutes =
203	+	Math.min(15, Math.max(runsPerTest / 60, 1));
204	+	for (TestCase lastTestCase = currentTestCase;;) {
205	+	try { MINUTES.sleep(timeoutMinutes); }
206	+	catch (InterruptedException unexpected) { break; }
207	+	if (lastTestCase == currentTestCase) {
208	+	System.err.printf(
209	+	"Looks like we're stuck running test: %s%n",
210	+	lastTestCase);
211	+	//                     System.err.printf(
212	+	//                         "Looks like we're stuck running test: %s (%d/%d)%n",
213	+	//                         lastTestCase, currentRun, runsPerTest);
214	+	//                     System.err.println("availableProcessors=" +
215	+	//                         Runtime.getRuntime().availableProcessors());
216	+	//                     System.err.printf("cpu model = %s%n", cpuModel());
217	+	dumpTestThreads();
218	+	// one stack dump is probably enough; more would be spam
219	+	break;
220	+	}
221	+	lastTestCase = currentTestCase;
222	+	}}};
223	+	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
224	+	thread.setDaemon(true);
225	+	thread.start();
226	+	}
227	+
228	+	//     public static String cpuModel() {
229	+	//         try {
230	+	//             Matcher matcher = Pattern.compile("model name\\s*: (.*)")
231	+	//                 .matcher(new String(
232	+	//                      Files.readAllBytes(Paths.get("/proc/cpuinfo")), "UTF-8"));
233	+	//             matcher.find();
234	+	//             return matcher.group(1);
235	+	//         } catch (Exception ex) { return null; }
236	+	//     }
237	+
238	+	public void runBare() throws Throwable {
239	+	currentTestCase = this;
240	+	if (methodFilter == null
241	+	|| methodFilter.matcher(toString()).find())
242	+	super.runBare();
243	+	}
244	+
245	+	protected void runTest() throws Throwable {
246	+	for (int i = 0; i < runsPerTest; i++) {
247	+	// currentRun = i;
248	+	if (profileTests)
249	+	runTestProfiled();
250	+	else
251	+	super.runTest();
252	+	}
253	+	}
254	+
255	+	protected void runTestProfiled() throws Throwable {
256	+	for (int i = 0; i < 2; i++) {
257	+	long startTime = System.nanoTime();
258	+	super.runTest();
259	+	long elapsedMillis = millisElapsedSince(startTime);
260	+	if (elapsedMillis < profileThreshold)
261	+	break;
262	+	// Never report first run of any test; treat it as a
263	+	// warmup run, notably to trigger all needed classloading,
264	+	if (i > 0)
265	+	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
266	+	}
267	+	}
268	+
269		/**
270	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
270	>	* Runs all JSR166 unit tests using junit.textui.TestRunner.
271		*/
272		public static void main(String[] args) {
273	<	int iters = 1;
274	<	if (args.length > 0)
275	<	iters = Integer.parseInt(args[0]);
276	<	Test s = suite();
277	<	for (int i = 0; i < iters; ++i) {
278	<	junit.textui.TestRunner.run(s);
273	>	main(suite(), args);
274	>	}
275	>
276	>	/**
277	>	* Runs all unit tests in the given test suite.
278	>	* Actual behavior influenced by jsr166.* system properties.
279	>	*/
280	>	static void main(Test suite, String[] args) {
281	>	if (useSecurityManager) {
282	>	System.err.println("Setting a permissive security manager");
283	>	Policy.setPolicy(permissivePolicy());
284	>	System.setSecurityManager(new SecurityManager());
285	>	}
286	>	for (int i = 0; i < suiteRuns; i++) {
287	>	TestResult result = junit.textui.TestRunner.run(suite);
288	>	if (!result.wasSuccessful())
289	>	System.exit(1);
290		System.gc();
291		System.runFinalization();
292		}
293	<	System.exit(0);
293	>	}
294	>
295	>	public static TestSuite newTestSuite(Object... suiteOrClasses) {
296	>	TestSuite suite = new TestSuite();
297	>	for (Object suiteOrClass : suiteOrClasses) {
298	>	if (suiteOrClass instanceof TestSuite)
299	>	suite.addTest((TestSuite) suiteOrClass);
300	>	else if (suiteOrClass instanceof Class)
301	>	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
302	>	else
303	>	throw new ClassCastException("not a test suite or class");
304	>	}
305	>	return suite;
306	>	}
307	>
308	>	public static void addNamedTestClasses(TestSuite suite,
309	>	String... testClassNames) {
310	>	for (String testClassName : testClassNames) {
311	>	try {
312	>	Class<?> testClass = Class.forName(testClassName);
313	>	Method m = testClass.getDeclaredMethod("suite",
314	>	new Class<?>[0]);
315	>	suite.addTest(newTestSuite((Test)m.invoke(null)));
316	>	} catch (Exception e) {
317	>	throw new Error("Missing test class", e);
318	>	}
319	>	}
320	>	}
321	>
322	>	public static final double JAVA_CLASS_VERSION;
323	>	public static final String JAVA_SPECIFICATION_VERSION;
324	>	static {
325	>	try {
326	>	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
327	>	new java.security.PrivilegedAction<Double>() {
328	>	public Double run() {
329	>	return Double.valueOf(System.getProperty("java.class.version"));}});
330	>	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
331	>	new java.security.PrivilegedAction<String>() {
332	>	public String run() {
333	>	return System.getProperty("java.specification.version");}});
334	>	} catch (Throwable t) {
335	>	throw new Error(t);
336	>	}
337	>	}
338	>
339	>	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
340	>	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
341	>	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
342	>	public static boolean atLeastJava9() {
343	>	return JAVA_CLASS_VERSION >= 53.0
344	>	// As of 2015-09, java9 still uses 52.0 class file version
345	>	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?(9|[0-9][0-9])$");
346	>	}
347	>	public static boolean atLeastJava10() {
348	>	return JAVA_CLASS_VERSION >= 54.0
349	>	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?[0-9][0-9]$");
350		}
351
352		/**
353	<	* Collects all JSR166 unit tests as one suite
353	>	* Collects all JSR166 unit tests as one suite.
354		*/
355		public static Test suite() {
356	<	TestSuite suite = new TestSuite("JSR166 Unit Tests");
357	<
358	<	suite.addTest(new TestSuite(ForkJoinPoolTest.class));
359	<	suite.addTest(new TestSuite(ForkJoinTaskTest.class));
360	<	suite.addTest(new TestSuite(RecursiveActionTest.class));
361	<	suite.addTest(new TestSuite(RecursiveTaskTest.class));
362	<	suite.addTest(new TestSuite(LinkedTransferQueueTest.class));
363	<	suite.addTest(new TestSuite(PhaserTest.class));
364	<	suite.addTest(new TestSuite(ThreadLocalRandomTest.class));
365	<	suite.addTest(new TestSuite(AbstractExecutorServiceTest.class));
366	<	suite.addTest(new TestSuite(AbstractQueueTest.class));
367	<	suite.addTest(new TestSuite(AbstractQueuedSynchronizerTest.class));
368	<	suite.addTest(new TestSuite(AbstractQueuedLongSynchronizerTest.class));
369	<	suite.addTest(new TestSuite(ArrayBlockingQueueTest.class));
370	<	suite.addTest(new TestSuite(ArrayDequeTest.class));
371	<	suite.addTest(new TestSuite(AtomicBooleanTest.class));
372	<	suite.addTest(new TestSuite(AtomicIntegerArrayTest.class));
373	<	suite.addTest(new TestSuite(AtomicIntegerFieldUpdaterTest.class));
374	<	suite.addTest(new TestSuite(AtomicIntegerTest.class));
375	<	suite.addTest(new TestSuite(AtomicLongArrayTest.class));
376	<	suite.addTest(new TestSuite(AtomicLongFieldUpdaterTest.class));
377	<	suite.addTest(new TestSuite(AtomicLongTest.class));
378	<	suite.addTest(new TestSuite(AtomicMarkableReferenceTest.class));
379	<	suite.addTest(new TestSuite(AtomicReferenceArrayTest.class));
380	<	suite.addTest(new TestSuite(AtomicReferenceFieldUpdaterTest.class));
381	<	suite.addTest(new TestSuite(AtomicReferenceTest.class));
382	<	suite.addTest(new TestSuite(AtomicStampedReferenceTest.class));
383	<	suite.addTest(new TestSuite(ConcurrentHashMapTest.class));
384	<	suite.addTest(new TestSuite(ConcurrentLinkedQueueTest.class));
385	<	suite.addTest(new TestSuite(ConcurrentSkipListMapTest.class));
386	<	suite.addTest(new TestSuite(ConcurrentSkipListSubMapTest.class));
387	<	suite.addTest(new TestSuite(ConcurrentSkipListSetTest.class));
388	<	suite.addTest(new TestSuite(ConcurrentSkipListSubSetTest.class));
389	<	suite.addTest(new TestSuite(CopyOnWriteArrayListTest.class));
390	<	suite.addTest(new TestSuite(CopyOnWriteArraySetTest.class));
391	<	suite.addTest(new TestSuite(CountDownLatchTest.class));
392	<	suite.addTest(new TestSuite(CyclicBarrierTest.class));
393	<	suite.addTest(new TestSuite(DelayQueueTest.class));
394	<	suite.addTest(new TestSuite(EntryTest.class));
395	<	suite.addTest(new TestSuite(ExchangerTest.class));
396	<	suite.addTest(new TestSuite(ExecutorsTest.class));
397	<	suite.addTest(new TestSuite(ExecutorCompletionServiceTest.class));
398	<	suite.addTest(new TestSuite(FutureTaskTest.class));
399	<	suite.addTest(new TestSuite(LinkedBlockingDequeTest.class));
400	<	suite.addTest(new TestSuite(LinkedBlockingQueueTest.class));
401	<	suite.addTest(new TestSuite(LinkedListTest.class));
402	<	suite.addTest(new TestSuite(LockSupportTest.class));
403	<	suite.addTest(new TestSuite(PriorityBlockingQueueTest.class));
404	<	suite.addTest(new TestSuite(PriorityQueueTest.class));
405	<	suite.addTest(new TestSuite(ReentrantLockTest.class));
406	<	suite.addTest(new TestSuite(ReentrantReadWriteLockTest.class));
407	<	suite.addTest(new TestSuite(ScheduledExecutorTest.class));
408	<	suite.addTest(new TestSuite(ScheduledExecutorSubclassTest.class));
409	<	suite.addTest(new TestSuite(SemaphoreTest.class));
410	<	suite.addTest(new TestSuite(SynchronousQueueTest.class));
411	<	suite.addTest(new TestSuite(SystemTest.class));
412	<	suite.addTest(new TestSuite(ThreadLocalTest.class));
413	<	suite.addTest(new TestSuite(ThreadPoolExecutorTest.class));
414	<	suite.addTest(new TestSuite(ThreadPoolExecutorSubclassTest.class));
415	<	suite.addTest(new TestSuite(ThreadTest.class));
416	<	suite.addTest(new TestSuite(TimeUnitTest.class));
417	<	suite.addTest(new TestSuite(TreeMapTest.class));
418	<	suite.addTest(new TestSuite(TreeSetTest.class));
419	<	suite.addTest(new TestSuite(TreeSubMapTest.class));
420	<	suite.addTest(new TestSuite(TreeSubSetTest.class));
356	>	// Java7+ test classes
357	>	TestSuite suite = newTestSuite(
358	>	ForkJoinPoolTest.suite(),
359	>	ForkJoinTaskTest.suite(),
360	>	RecursiveActionTest.suite(),
361	>	RecursiveTaskTest.suite(),
362	>	LinkedTransferQueueTest.suite(),
363	>	PhaserTest.suite(),
364	>	ThreadLocalRandomTest.suite(),
365	>	AbstractExecutorServiceTest.suite(),
366	>	AbstractQueueTest.suite(),
367	>	AbstractQueuedSynchronizerTest.suite(),
368	>	AbstractQueuedLongSynchronizerTest.suite(),
369	>	ArrayBlockingQueueTest.suite(),
370	>	ArrayDequeTest.suite(),
371	>	AtomicBooleanTest.suite(),
372	>	AtomicIntegerArrayTest.suite(),
373	>	AtomicIntegerFieldUpdaterTest.suite(),
374	>	AtomicIntegerTest.suite(),
375	>	AtomicLongArrayTest.suite(),
376	>	AtomicLongFieldUpdaterTest.suite(),
377	>	AtomicLongTest.suite(),
378	>	AtomicMarkableReferenceTest.suite(),
379	>	AtomicReferenceArrayTest.suite(),
380	>	AtomicReferenceFieldUpdaterTest.suite(),
381	>	AtomicReferenceTest.suite(),
382	>	AtomicStampedReferenceTest.suite(),
383	>	ConcurrentHashMapTest.suite(),
384	>	ConcurrentLinkedDequeTest.suite(),
385	>	ConcurrentLinkedQueueTest.suite(),
386	>	ConcurrentSkipListMapTest.suite(),
387	>	ConcurrentSkipListSubMapTest.suite(),
388	>	ConcurrentSkipListSetTest.suite(),
389	>	ConcurrentSkipListSubSetTest.suite(),
390	>	CopyOnWriteArrayListTest.suite(),
391	>	CopyOnWriteArraySetTest.suite(),
392	>	CountDownLatchTest.suite(),
393	>	CyclicBarrierTest.suite(),
394	>	DelayQueueTest.suite(),
395	>	EntryTest.suite(),
396	>	ExchangerTest.suite(),
397	>	ExecutorsTest.suite(),
398	>	ExecutorCompletionServiceTest.suite(),
399	>	FutureTaskTest.suite(),
400	>	LinkedBlockingDequeTest.suite(),
401	>	LinkedBlockingQueueTest.suite(),
402	>	LinkedListTest.suite(),
403	>	LockSupportTest.suite(),
404	>	PriorityBlockingQueueTest.suite(),
405	>	PriorityQueueTest.suite(),
406	>	ReentrantLockTest.suite(),
407	>	ReentrantReadWriteLockTest.suite(),
408	>	ScheduledExecutorTest.suite(),
409	>	ScheduledExecutorSubclassTest.suite(),
410	>	SemaphoreTest.suite(),
411	>	SynchronousQueueTest.suite(),
412	>	SystemTest.suite(),
413	>	ThreadLocalTest.suite(),
414	>	ThreadPoolExecutorTest.suite(),
415	>	ThreadPoolExecutorSubclassTest.suite(),
416	>	ThreadTest.suite(),
417	>	TimeUnitTest.suite(),
418	>	TreeMapTest.suite(),
419	>	TreeSetTest.suite(),
420	>	TreeSubMapTest.suite(),
421	>	TreeSubSetTest.suite());
422	>
423	>	// Java8+ test classes
424	>	if (atLeastJava8()) {
425	>	String[] java8TestClassNames = {
426	>	"Atomic8Test",
427	>	"CompletableFutureTest",
428	>	"ConcurrentHashMap8Test",
429	>	"CountedCompleterTest",
430	>	"DoubleAccumulatorTest",
431	>	"DoubleAdderTest",
432	>	"ForkJoinPool8Test",
433	>	"ForkJoinTask8Test",
434	>	"LongAccumulatorTest",
435	>	"LongAdderTest",
436	>	"SplittableRandomTest",
437	>	"StampedLockTest",
438	>	"SubmissionPublisherTest",
439	>	"ThreadLocalRandom8Test",
440	>	};
441	>	addNamedTestClasses(suite, java8TestClassNames);
442	>	}
443	>
444	>	// Java9+ test classes
445	>	if (atLeastJava9()) {
446	>	String[] java9TestClassNames = {
447	>	// Currently empty, but expecting varhandle tests
448	>	};
449	>	addNamedTestClasses(suite, java9TestClassNames);
450	>	}
451
452		return suite;
453		}
454
455	+	/** Returns list of junit-style test method names in given class. */
456	+	public static ArrayList<String> testMethodNames(Class<?> testClass) {
457	+	Method[] methods = testClass.getDeclaredMethods();
458	+	ArrayList<String> names = new ArrayList<String>(methods.length);
459	+	for (Method method : methods) {
460	+	if (method.getName().startsWith("test")
461	+	&& Modifier.isPublic(method.getModifiers())
462	+	// method.getParameterCount() requires jdk8+
463	+	&& method.getParameterTypes().length == 0) {
464	+	names.add(method.getName());
465	+	}
466	+	}
467	+	return names;
468	+	}
469	+
470	+	/**
471	+	* Returns junit-style testSuite for the given test class, but
472	+	* parameterized by passing extra data to each test.
473	+	*/
474	+	public static <ExtraData> Test parameterizedTestSuite
475	+	(Class<? extends JSR166TestCase> testClass,
476	+	Class<ExtraData> dataClass,
477	+	ExtraData data) {
478	+	try {
479	+	TestSuite suite = new TestSuite();
480	+	Constructor c =
481	+	testClass.getDeclaredConstructor(dataClass, String.class);
482	+	for (String methodName : testMethodNames(testClass))
483	+	suite.addTest((Test) c.newInstance(data, methodName));
484	+	return suite;
485	+	} catch (Exception e) {
486	+	throw new Error(e);
487	+	}
488	+	}
489	+
490	+	/**
491	+	* Returns junit-style testSuite for the jdk8 extension of the
492	+	* given test class, but parameterized by passing extra data to
493	+	* each test.  Uses reflection to allow compilation in jdk7.
494	+	*/
495	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
496	+	(Class<? extends JSR166TestCase> testClass,
497	+	Class<ExtraData> dataClass,
498	+	ExtraData data) {
499	+	if (atLeastJava8()) {
500	+	String name = testClass.getName();
501	+	String name8 = name.replaceAll("Test$", "8Test");
502	+	if (name.equals(name8)) throw new Error(name);
503	+	try {
504	+	return (Test)
505	+	Class.forName(name8)
506	+	.getMethod("testSuite", new Class[] { dataClass })
507	+	.invoke(null, data);
508	+	} catch (Exception e) {
509	+	throw new Error(e);
510	+	}
511	+	} else {
512	+	return new TestSuite();
513	+	}
514	+	}
515	+
516	+	// Delays for timing-dependent tests, in milliseconds.
517
518		public static long SHORT_DELAY_MS;
519		public static long SMALL_DELAY_MS;
520		public static long MEDIUM_DELAY_MS;
521		public static long LONG_DELAY_MS;
522
185	–
523		/**
524		* Returns the shortest timed delay. This could
525		* be reimplemented to use for example a Property.
#	Line 191 | Line 528 | public class JSR166TestCase extends Test
528		return 50;
529		}
530
194	–
531		/**
532		* Sets delays as multiples of SHORT_DELAY.
533		*/
534		protected void setDelays() {
535		SHORT_DELAY_MS = getShortDelay();
536	<	SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
536	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
537		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
538	<	LONG_DELAY_MS = SHORT_DELAY_MS * 50;
538	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
539		}
540
541		/**
542	<	* Flag set true if any threadAssert methods fail
542	>	* Returns a timeout in milliseconds to be used in tests that
543	>	* verify that operations block or time out.
544		*/
545	<	volatile boolean threadFailed;
545	>	long timeoutMillis() {
546	>	return SHORT_DELAY_MS / 4;
547	>	}
548	>
549	>	/**
550	>	* Returns a new Date instance representing a time at least
551	>	* delayMillis milliseconds in the future.
552	>	*/
553	>	Date delayedDate(long delayMillis) {
554	>	// Add 1 because currentTimeMillis is known to round into the past.
555	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
556	>	}
557
558		/**
559	<	* Initializes test to indicate that no thread assertions have failed
559	>	* The first exception encountered if any threadAssertXXX method fails.
560		*/
561	+	private final AtomicReference<Throwable> threadFailure
562	+	= new AtomicReference<Throwable>(null);
563	+
564	+	/**
565	+	* Records an exception so that it can be rethrown later in the test
566	+	* harness thread, triggering a test case failure.  Only the first
567	+	* failure is recorded; subsequent calls to this method from within
568	+	* the same test have no effect.
569	+	*/
570	+	public void threadRecordFailure(Throwable t) {
571	+	System.err.println(t);
572	+	dumpTestThreads();
573	+	threadFailure.compareAndSet(null, t);
574	+	}
575	+
576		public void setUp() {
577		setDelays();
578	<	threadFailed = false;
578	>	}
579	>
580	>	void tearDownFail(String format, Object... args) {
581	>	String msg = toString() + ": " + String.format(format, args);
582	>	System.err.println(msg);
583	>	dumpTestThreads();
584	>	throw new AssertionFailedError(msg);
585	>	}
586	>
587	>	/**
588	>	* Extra checks that get done for all test cases.
589	>	*
590	>	* Triggers test case failure if any thread assertions have failed,
591	>	* by rethrowing, in the test harness thread, any exception recorded
592	>	* earlier by threadRecordFailure.
593	>	*
594	>	* Triggers test case failure if interrupt status is set in the main thread.
595	>	*/
596	>	public void tearDown() throws Exception {
597	>	Throwable t = threadFailure.getAndSet(null);
598	>	if (t != null) {
599	>	if (t instanceof Error)
600	>	throw (Error) t;
601	>	else if (t instanceof RuntimeException)
602	>	throw (RuntimeException) t;
603	>	else if (t instanceof Exception)
604	>	throw (Exception) t;
605	>	else {
606	>	AssertionFailedError afe =
607	>	new AssertionFailedError(t.toString());
608	>	afe.initCause(t);
609	>	throw afe;
610	>	}
611	>	}
612	>
613	>	if (Thread.interrupted())
614	>	tearDownFail("interrupt status set in main thread");
615	>
616	>	checkForkJoinPoolThreadLeaks();
617		}
618
619		/**
620	<	* Triggers test case failure if any thread assertions have failed
620	>	* Finds missing PoolCleaners
621		*/
622	<	public void tearDown() {
623	<	assertFalse(threadFailed);
622	>	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
623	>	Thread[] survivors = new Thread[7];
624	>	int count = Thread.enumerate(survivors);
625	>	for (int i = 0; i < count; i++) {
626	>	Thread thread = survivors[i];
627	>	String name = thread.getName();
628	>	if (name.startsWith("ForkJoinPool-")) {
629	>	// give thread some time to terminate
630	>	thread.join(LONG_DELAY_MS);
631	>	if (thread.isAlive())
632	>	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
633	>	thread);
634	>	}
635	>	}
636	>
637	>	if (!ForkJoinPool.commonPool()
638	>	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
639	>	tearDownFail("ForkJoin common pool thread stuck");
640		}
641
642		/**
643	<	* Fail, also setting status to indicate current testcase should fail
643	>	* Just like fail(reason), but additionally recording (using
644	>	* threadRecordFailure) any AssertionFailedError thrown, so that
645	>	* the current testcase will fail.
646		*/
647		public void threadFail(String reason) {
648	<	threadFailed = true;
649	<	fail(reason);
648	>	try {
649	>	fail(reason);
650	>	} catch (AssertionFailedError t) {
651	>	threadRecordFailure(t);
652	>	throw t;
653	>	}
654		}
655
656		/**
657	<	* If expression not true, set status to indicate current testcase
658	<	* should fail
657	>	* Just like assertTrue(b), but additionally recording (using
658	>	* threadRecordFailure) any AssertionFailedError thrown, so that
659	>	* the current testcase will fail.
660		*/
661		public void threadAssertTrue(boolean b) {
662	<	if (!b) {
239	<	threadFailed = true;
662	>	try {
663		assertTrue(b);
664	+	} catch (AssertionFailedError t) {
665	+	threadRecordFailure(t);
666	+	throw t;
667		}
668		}
669
670		/**
671	<	* If expression not false, set status to indicate current testcase
672	<	* should fail
671	>	* Just like assertFalse(b), but additionally recording (using
672	>	* threadRecordFailure) any AssertionFailedError thrown, so that
673	>	* the current testcase will fail.
674		*/
675		public void threadAssertFalse(boolean b) {
676	<	if (b) {
250	<	threadFailed = true;
676	>	try {
677		assertFalse(b);
678	+	} catch (AssertionFailedError t) {
679	+	threadRecordFailure(t);
680	+	throw t;
681		}
682		}
683
684		/**
685	<	* If argument not null, set status to indicate current testcase
686	<	* should fail
685	>	* Just like assertNull(x), but additionally recording (using
686	>	* threadRecordFailure) any AssertionFailedError thrown, so that
687	>	* the current testcase will fail.
688		*/
689		public void threadAssertNull(Object x) {
690	<	if (x != null) {
261	<	threadFailed = true;
690	>	try {
691		assertNull(x);
692	+	} catch (AssertionFailedError t) {
693	+	threadRecordFailure(t);
694	+	throw t;
695		}
696		}
697
698		/**
699	<	* If arguments not equal, set status to indicate current testcase
700	<	* should fail
699	>	* Just like assertEquals(x, y), but additionally recording (using
700	>	* threadRecordFailure) any AssertionFailedError thrown, so that
701	>	* the current testcase will fail.
702		*/
703		public void threadAssertEquals(long x, long y) {
704	<	if (x != y) {
272	<	threadFailed = true;
704	>	try {
705		assertEquals(x, y);
706	+	} catch (AssertionFailedError t) {
707	+	threadRecordFailure(t);
708	+	throw t;
709		}
710		}
711
712		/**
713	<	* If arguments not equal, set status to indicate current testcase
714	<	* should fail
713	>	* Just like assertEquals(x, y), but additionally recording (using
714	>	* threadRecordFailure) any AssertionFailedError thrown, so that
715	>	* the current testcase will fail.
716		*/
717		public void threadAssertEquals(Object x, Object y) {
718	<	if (x != y && (x == null || !x.equals(y))) {
283	<	threadFailed = true;
718	>	try {
719		assertEquals(x, y);
720	+	} catch (AssertionFailedError fail) {
721	+	threadRecordFailure(fail);
722	+	throw fail;
723	+	} catch (Throwable fail) {
724	+	threadUnexpectedException(fail);
725	+	}
726	+	}
727	+
728	+	/**
729	+	* Just like assertSame(x, y), but additionally recording (using
730	+	* threadRecordFailure) any AssertionFailedError thrown, so that
731	+	* the current testcase will fail.
732	+	*/
733	+	public void threadAssertSame(Object x, Object y) {
734	+	try {
735	+	assertSame(x, y);
736	+	} catch (AssertionFailedError fail) {
737	+	threadRecordFailure(fail);
738	+	throw fail;
739		}
740		}
741
742		/**
743	<	* threadFail with message "should throw exception"
743	>	* Calls threadFail with message "should throw exception".
744		*/
745		public void threadShouldThrow() {
746	<	threadFailed = true;
293	<	fail("should throw exception");
746	>	threadFail("should throw exception");
747		}
748
749		/**
750	<	* threadFail with message "should throw" + exceptionName
750	>	* Calls threadFail with message "should throw" + exceptionName.
751		*/
752		public void threadShouldThrow(String exceptionName) {
753	<	threadFailed = true;
301	<	fail("should throw " + exceptionName);
753	>	threadFail("should throw " + exceptionName);
754		}
755
756		/**
757	<	* threadFail with message "Unexpected exception"
757	>	* Records the given exception using {@link #threadRecordFailure},
758	>	* then rethrows the exception, wrapping it in an
759	>	* AssertionFailedError if necessary.
760		*/
761	<	public void threadUnexpectedException() {
762	<	threadFailed = true;
763	<	fail("Unexpected exception");
761	>	public void threadUnexpectedException(Throwable t) {
762	>	threadRecordFailure(t);
763	>	t.printStackTrace();
764	>	if (t instanceof RuntimeException)
765	>	throw (RuntimeException) t;
766	>	else if (t instanceof Error)
767	>	throw (Error) t;
768	>	else {
769	>	AssertionFailedError afe =
770	>	new AssertionFailedError("unexpected exception: " + t);
771	>	afe.initCause(t);
772	>	throw afe;
773	>	}
774	>	}
775	>
776	>	/**
777	>	* Delays, via Thread.sleep, for the given millisecond delay, but
778	>	* if the sleep is shorter than specified, may re-sleep or yield
779	>	* until time elapses.  Ensures that the given time, as measured
780	>	* by System.nanoTime(), has elapsed.
781	>	*/
782	>	static void delay(long millis) throws InterruptedException {
783	>	long nanos = millis * (1000 * 1000);
784	>	final long wakeupTime = System.nanoTime() + nanos;
785	>	do {
786	>	if (millis > 0L)
787	>	Thread.sleep(millis);
788	>	else // too short to sleep
789	>	Thread.yield();
790	>	nanos = wakeupTime - System.nanoTime();
791	>	millis = nanos / (1000 * 1000);
792	>	} while (nanos >= 0L);
793		}
794
795		/**
796	<	* threadFail with message "Unexpected exception", with argument
796	>	* Allows use of try-with-resources with per-test thread pools.
797		*/
798	<	public void threadUnexpectedException(Throwable ex) {
799	<	threadFailed = true;
800	<	ex.printStackTrace();
801	<	fail("Unexpected exception: " + ex);
798	>	class PoolCleaner implements AutoCloseable {
799	>	private final ExecutorService pool;
800	>	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
801	>	public void close() { joinPool(pool); }
802		}
803
804		/**
805	<	* Wait out termination of a thread pool or fail doing so
805	>	* An extension of PoolCleaner that has an action to release the pool.
806		*/
807	<	public void joinPool(ExecutorService exec) {
807	>	class PoolCleanerWithReleaser extends PoolCleaner {
808	>	private final Runnable releaser;
809	>	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
810	>	super(pool);
811	>	this.releaser = releaser;
812	>	}
813	>	public void close() {
814	>	try {
815	>	releaser.run();
816	>	} finally {
817	>	super.close();
818	>	}
819	>	}
820	>	}
821	>
822	>	PoolCleaner cleaner(ExecutorService pool) {
823	>	return new PoolCleaner(pool);
824	>	}
825	>
826	>	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
827	>	return new PoolCleanerWithReleaser(pool, releaser);
828	>	}
829	>
830	>	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
831	>	return new PoolCleanerWithReleaser(pool, releaser(latch));
832	>	}
833	>
834	>	Runnable releaser(final CountDownLatch latch) {
835	>	return new Runnable() { public void run() {
836	>	do { latch.countDown(); }
837	>	while (latch.getCount() > 0);
838	>	}};
839	>	}
840	>
841	>	/**
842	>	* Waits out termination of a thread pool or fails doing so.
843	>	*/
844	>	void joinPool(ExecutorService pool) {
845		try {
846	<	exec.shutdown();
847	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
846	>	pool.shutdown();
847	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
848	>	try {
849	>	threadFail("ExecutorService " + pool +
850	>	" did not terminate in a timely manner");
851	>	} finally {
852	>	// last resort, for the benefit of subsequent tests
853	>	pool.shutdownNow();
854	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
855	>	}
856	>	}
857		} catch (SecurityException ok) {
858		// Allowed in case test doesn't have privs
859	<	} catch (InterruptedException ie) {
860	<	fail("Unexpected InterruptedException");
859	>	} catch (InterruptedException fail) {
860	>	threadFail("Unexpected InterruptedException");
861		}
862		}
863
864	+	/** Like Runnable, but with the freedom to throw anything */
865	+	interface Action { public void run() throws Throwable; }
866
867		/**
868	<	* fail with message "should throw exception"
868	>	* Runs all the given actions in parallel, failing if any fail.
869	>	* Useful for running multiple variants of tests that are
870	>	* necessarily individually slow because they must block.
871		*/
872	<	public void shouldThrow() {
873	<	fail("Should throw exception");
872	>	void testInParallel(Action ... actions) {
873	>	ExecutorService pool = Executors.newCachedThreadPool();
874	>	try (PoolCleaner cleaner = cleaner(pool)) {
875	>	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
876	>	for (final Action action : actions)
877	>	futures.add(pool.submit(new CheckedRunnable() {
878	>	public void realRun() throws Throwable { action.run();}}));
879	>	for (Future<?> future : futures)
880	>	try {
881	>	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
882	>	} catch (ExecutionException ex) {
883	>	threadUnexpectedException(ex.getCause());
884	>	} catch (Exception ex) {
885	>	threadUnexpectedException(ex);
886	>	}
887	>	}
888		}
889
890		/**
891	<	* fail with message "should throw " + exceptionName
891	>	* A debugging tool to print stack traces of most threads, as jstack does.
892	>	* Uninteresting threads are filtered out.
893		*/
894	<	public void shouldThrow(String exceptionName) {
895	<	fail("Should throw " + exceptionName);
894	>	static void dumpTestThreads() {
895	>	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
896	>	System.err.println("------ stacktrace dump start ------");
897	>	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
898	>	String name = info.getThreadName();
899	>	if ("Signal Dispatcher".equals(name))
900	>	continue;
901	>	if ("Reference Handler".equals(name)
902	>	&& info.getLockName().startsWith("java.lang.ref.Reference$Lock"))
903	>	continue;
904	>	if ("Finalizer".equals(name)
905	>	&& info.getLockName().startsWith("java.lang.ref.ReferenceQueue$Lock"))
906	>	continue;
907	>	if ("checkForWedgedTest".equals(name))
908	>	continue;
909	>	System.err.print(info);
910	>	}
911	>	System.err.println("------ stacktrace dump end ------");
912		}
913
914		/**
915	<	* fail with message "Unexpected exception"
915	>	* Checks that thread does not terminate within the default
916	>	* millisecond delay of {@code timeoutMillis()}.
917		*/
918	<	public void unexpectedException() {
919	<	fail("Unexpected exception");
918	>	void assertThreadStaysAlive(Thread thread) {
919	>	assertThreadStaysAlive(thread, timeoutMillis());
920		}
921
922		/**
923	<	* fail with message "Unexpected exception", with argument
923	>	* Checks that thread does not terminate within the given millisecond delay.
924		*/
925	<	public void unexpectedException(Throwable ex) {
926	<	ex.printStackTrace();
927	<	fail("Unexpected exception: " + ex);
925	>	void assertThreadStaysAlive(Thread thread, long millis) {
926	>	try {
927	>	// No need to optimize the failing case via Thread.join.
928	>	delay(millis);
929	>	assertTrue(thread.isAlive());
930	>	} catch (InterruptedException fail) {
931	>	threadFail("Unexpected InterruptedException");
932	>	}
933		}
934
935	+	/**
936	+	* Checks that the threads do not terminate within the default
937	+	* millisecond delay of {@code timeoutMillis()}.
938	+	*/
939	+	void assertThreadsStayAlive(Thread... threads) {
940	+	assertThreadsStayAlive(timeoutMillis(), threads);
941	+	}
942	+
943	+	/**
944	+	* Checks that the threads do not terminate within the given millisecond delay.
945	+	*/
946	+	void assertThreadsStayAlive(long millis, Thread... threads) {
947	+	try {
948	+	// No need to optimize the failing case via Thread.join.
949	+	delay(millis);
950	+	for (Thread thread : threads)
951	+	assertTrue(thread.isAlive());
952	+	} catch (InterruptedException fail) {
953	+	threadFail("Unexpected InterruptedException");
954	+	}
955	+	}
956	+
957	+	/**
958	+	* Checks that future.get times out, with the default timeout of
959	+	* {@code timeoutMillis()}.
960	+	*/
961	+	void assertFutureTimesOut(Future future) {
962	+	assertFutureTimesOut(future, timeoutMillis());
963	+	}
964	+
965	+	/**
966	+	* Checks that future.get times out, with the given millisecond timeout.
967	+	*/
968	+	void assertFutureTimesOut(Future future, long timeoutMillis) {
969	+	long startTime = System.nanoTime();
970	+	try {
971	+	future.get(timeoutMillis, MILLISECONDS);
972	+	shouldThrow();
973	+	} catch (TimeoutException success) {
974	+	} catch (Exception fail) {
975	+	threadUnexpectedException(fail);
976	+	} finally { future.cancel(true); }
977	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
978	+	}
979	+
980	+	/**
981	+	* Fails with message "should throw exception".
982	+	*/
983	+	public void shouldThrow() {
984	+	fail("Should throw exception");
985	+	}
986	+
987	+	/**
988	+	* Fails with message "should throw " + exceptionName.
989	+	*/
990	+	public void shouldThrow(String exceptionName) {
991	+	fail("Should throw " + exceptionName);
992	+	}
993
994		/**
995		* The number of elements to place in collections, arrays, etc.
#	Line 388 | Line 1016 | public class JSR166TestCase extends Test
1016		public static final Integer m6  = new Integer(-6);
1017		public static final Integer m10 = new Integer(-10);
1018
1019	+	/**
1020	+	* Runs Runnable r with a security policy that permits precisely
1021	+	* the specified permissions.  If there is no current security
1022	+	* manager, the runnable is run twice, both with and without a
1023	+	* security manager.  We require that any security manager permit
1024	+	* getPolicy/setPolicy.
1025	+	*/
1026	+	public void runWithPermissions(Runnable r, Permission... permissions) {
1027	+	SecurityManager sm = System.getSecurityManager();
1028	+	if (sm == null) {
1029	+	r.run();
1030	+	}
1031	+	runWithSecurityManagerWithPermissions(r, permissions);
1032	+	}
1033	+
1034	+	/**
1035	+	* Runs Runnable r with a security policy that permits precisely
1036	+	* the specified permissions.  If there is no current security
1037	+	* manager, a temporary one is set for the duration of the
1038	+	* Runnable.  We require that any security manager permit
1039	+	* getPolicy/setPolicy.
1040	+	*/
1041	+	public void runWithSecurityManagerWithPermissions(Runnable r,
1042	+	Permission... permissions) {
1043	+	SecurityManager sm = System.getSecurityManager();
1044	+	if (sm == null) {
1045	+	Policy savedPolicy = Policy.getPolicy();
1046	+	try {
1047	+	Policy.setPolicy(permissivePolicy());
1048	+	System.setSecurityManager(new SecurityManager());
1049	+	runWithSecurityManagerWithPermissions(r, permissions);
1050	+	} finally {
1051	+	System.setSecurityManager(null);
1052	+	Policy.setPolicy(savedPolicy);
1053	+	}
1054	+	} else {
1055	+	Policy savedPolicy = Policy.getPolicy();
1056	+	AdjustablePolicy policy = new AdjustablePolicy(permissions);
1057	+	Policy.setPolicy(policy);
1058	+
1059	+	try {
1060	+	r.run();
1061	+	} finally {
1062	+	policy.addPermission(new SecurityPermission("setPolicy"));
1063	+	Policy.setPolicy(savedPolicy);
1064	+	}
1065	+	}
1066	+	}
1067	+
1068	+	/**
1069	+	* Runs a runnable without any permissions.
1070	+	*/
1071	+	public void runWithoutPermissions(Runnable r) {
1072	+	runWithPermissions(r);
1073	+	}
1074
1075		/**
1076		* A security policy where new permissions can be dynamically added
#	Line 395 | Line 1078 | public class JSR166TestCase extends Test
1078		*/
1079		public static class AdjustablePolicy extends java.security.Policy {
1080		Permissions perms = new Permissions();
1081	<	AdjustablePolicy() { }
1081	>	AdjustablePolicy(Permission... permissions) {
1082	>	for (Permission permission : permissions)
1083	>	perms.add(permission);
1084	>	}
1085		void addPermission(Permission perm) { perms.add(perm); }
1086		void clearPermissions() { perms = new Permissions(); }
1087		public PermissionCollection getPermissions(CodeSource cs) {
#	Line 408 | Line 1094 | public class JSR166TestCase extends Test
1094		return perms.implies(p);
1095		}
1096		public void refresh() {}
1097	+	public String toString() {
1098	+	List<Permission> ps = new ArrayList<Permission>();
1099	+	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1100	+	ps.add(e.nextElement());
1101	+	return "AdjustablePolicy with permissions " + ps;
1102	+	}
1103		}
1104
1105		/**
1106	<	* Sleep until the timeout has elapsed, or interrupted.
415	<	* Does <em>NOT</em> throw InterruptedException.
1106	>	* Returns a policy containing all the permissions we ever need.
1107		*/
1108	<	void sleepTillInterrupted(long timeoutMillis) {
1108	>	public static Policy permissivePolicy() {
1109	>	return new AdjustablePolicy
1110	>	// Permissions j.u.c. needs directly
1111	>	(new RuntimePermission("modifyThread"),
1112	>	new RuntimePermission("getClassLoader"),
1113	>	new RuntimePermission("setContextClassLoader"),
1114	>	// Permissions needed to change permissions!
1115	>	new SecurityPermission("getPolicy"),
1116	>	new SecurityPermission("setPolicy"),
1117	>	new RuntimePermission("setSecurityManager"),
1118	>	// Permissions needed by the junit test harness
1119	>	new RuntimePermission("accessDeclaredMembers"),
1120	>	new PropertyPermission("*", "read"),
1121	>	new java.io.FilePermission("<<ALL FILES>>", "read"));
1122	>	}
1123	>
1124	>	/**
1125	>	* Sleeps until the given time has elapsed.
1126	>	* Throws AssertionFailedError if interrupted.
1127	>	*/
1128	>	void sleep(long millis) {
1129		try {
1130	<	Thread.sleep(timeoutMillis);
1131	<	} catch (InterruptedException wakeup) {}
1130	>	delay(millis);
1131	>	} catch (InterruptedException fail) {
1132	>	AssertionFailedError afe =
1133	>	new AssertionFailedError("Unexpected InterruptedException");
1134	>	afe.initCause(fail);
1135	>	throw afe;
1136	>	}
1137	>	}
1138	>
1139	>	/**
1140	>	* Spin-waits up to the specified number of milliseconds for the given
1141	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1142	>	*/
1143	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1144	>	long startTime = System.nanoTime();
1145	>	for (;;) {
1146	>	Thread.State s = thread.getState();
1147	>	if (s == Thread.State.BLOCKED ||
1148	>	s == Thread.State.WAITING ||
1149	>	s == Thread.State.TIMED_WAITING)
1150	>	return;
1151	>	else if (s == Thread.State.TERMINATED)
1152	>	fail("Unexpected thread termination");
1153	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1154	>	threadAssertTrue(thread.isAlive());
1155	>	return;
1156	>	}
1157	>	Thread.yield();
1158	>	}
1159		}
1160
1161		/**
1162	<	* Returns a new started Thread running the given runnable.
1162	>	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
1163	>	* state: BLOCKED, WAITING, or TIMED_WAITING.
1164	>	*/
1165	>	void waitForThreadToEnterWaitState(Thread thread) {
1166	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
1167	>	}
1168	>
1169	>	/**
1170	>	* Returns the number of milliseconds since time given by
1171	>	* startNanoTime, which must have been previously returned from a
1172	>	* call to {@link System#nanoTime()}.
1173	>	*/
1174	>	static long millisElapsedSince(long startNanoTime) {
1175	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1176	>	}
1177	>
1178	>	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1179	>	//         long startTime = System.nanoTime();
1180	>	//         try {
1181	>	//             r.run();
1182	>	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1183	>	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1184	>	//             throw new AssertionFailedError("did not return promptly");
1185	>	//     }
1186	>
1187	>	//     void assertTerminatesPromptly(Runnable r) {
1188	>	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1189	>	//     }
1190	>
1191	>	/**
1192	>	* Checks that timed f.get() returns the expected value, and does not
1193	>	* wait for the timeout to elapse before returning.
1194	>	*/
1195	>	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1196	>	long startTime = System.nanoTime();
1197	>	try {
1198	>	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1199	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1200	>	if (millisElapsedSince(startTime) > timeoutMillis/2)
1201	>	throw new AssertionFailedError("timed get did not return promptly");
1202	>	}
1203	>
1204	>	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1205	>	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1206	>	}
1207	>
1208	>	/**
1209	>	* Returns a new started daemon Thread running the given runnable.
1210		*/
1211		Thread newStartedThread(Runnable runnable) {
1212		Thread t = new Thread(runnable);
1213	+	t.setDaemon(true);
1214		t.start();
1215		return t;
1216		}
1217
1218	+	/**
1219	+	* Waits for the specified time (in milliseconds) for the thread
1220	+	* to terminate (using {@link Thread#join(long)}), else interrupts
1221	+	* the thread (in the hope that it may terminate later) and fails.
1222	+	*/
1223	+	void awaitTermination(Thread t, long timeoutMillis) {
1224	+	try {
1225	+	t.join(timeoutMillis);
1226	+	} catch (InterruptedException fail) {
1227	+	threadUnexpectedException(fail);
1228	+	} finally {
1229	+	if (t.getState() != Thread.State.TERMINATED) {
1230	+	t.interrupt();
1231	+	threadFail("Test timed out");
1232	+	}
1233	+	}
1234	+	}
1235	+
1236	+	/**
1237	+	* Waits for LONG_DELAY_MS milliseconds for the thread to
1238	+	* terminate (using {@link Thread#join(long)}), else interrupts
1239	+	* the thread (in the hope that it may terminate later) and fails.
1240	+	*/
1241	+	void awaitTermination(Thread t) {
1242	+	awaitTermination(t, LONG_DELAY_MS);
1243	+	}
1244	+
1245		// Some convenient Runnable classes
1246
1247		public abstract class CheckedRunnable implements Runnable {
#	Line 437 | Line 1250 | public class JSR166TestCase extends Test
1250		public final void run() {
1251		try {
1252		realRun();
1253	<	} catch (Throwable t) {
1254	<	threadUnexpectedException(t);
1253	>	} catch (Throwable fail) {
1254	>	threadUnexpectedException(fail);
1255		}
1256		}
1257		}
#	Line 491 | Line 1304 | public class JSR166TestCase extends Test
1304		realRun();
1305		threadShouldThrow("InterruptedException");
1306		} catch (InterruptedException success) {
1307	<	} catch (Throwable t) {
1308	<	threadUnexpectedException(t);
1307	>	threadAssertFalse(Thread.interrupted());
1308	>	} catch (Throwable fail) {
1309	>	threadUnexpectedException(fail);
1310		}
1311		}
1312		}
#	Line 503 | Line 1317 | public class JSR166TestCase extends Test
1317		public final T call() {
1318		try {
1319		return realCall();
1320	<	} catch (Throwable t) {
1321	<	threadUnexpectedException(t);
1320	>	} catch (Throwable fail) {
1321	>	threadUnexpectedException(fail);
1322	>	return null;
1323		}
509	–	return null;
1324		}
1325		}
1326
1327	<	public abstract class CheckedInterruptedCallable<T> implements Callable<T> {
1327	>	public abstract class CheckedInterruptedCallable<T>
1328	>	implements Callable<T> {
1329		protected abstract T realCall() throws Throwable;
1330
1331		public final T call() {
#	Line 519 | Line 1334 | public class JSR166TestCase extends Test
1334		threadShouldThrow("InterruptedException");
1335		return result;
1336		} catch (InterruptedException success) {
1337	<	} catch (Throwable t) {
1338	<	threadUnexpectedException(t);
1337	>	threadAssertFalse(Thread.interrupted());
1338	>	} catch (Throwable fail) {
1339	>	threadUnexpectedException(fail);
1340		}
1341		return null;
1342		}
#	Line 537 | Line 1353 | public class JSR166TestCase extends Test
1353		public static final String TEST_STRING = "a test string";
1354
1355		public static class StringTask implements Callable<String> {
1356	<	public String call() { return TEST_STRING; }
1356	>	final String value;
1357	>	public StringTask() { this(TEST_STRING); }
1358	>	public StringTask(String value) { this.value = value; }
1359	>	public String call() { return value; }
1360		}
1361
1362		public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1363		return new CheckedCallable<String>() {
1364	<	public String realCall() {
1364	>	protected String realCall() {
1365		try {
1366		latch.await();
1367		} catch (InterruptedException quittingTime) {}
#	Line 550 | Line 1369 | public class JSR166TestCase extends Test
1369		}};
1370		}
1371
1372	+	public Runnable countDowner(final CountDownLatch latch) {
1373	+	return new CheckedRunnable() {
1374	+	public void realRun() throws InterruptedException {
1375	+	latch.countDown();
1376	+	}};
1377	+	}
1378	+
1379	+	class LatchAwaiter extends CheckedRunnable {
1380	+	static final int NEW = 0;
1381	+	static final int RUNNING = 1;
1382	+	static final int DONE = 2;
1383	+	final CountDownLatch latch;
1384	+	int state = NEW;
1385	+	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1386	+	public void realRun() throws InterruptedException {
1387	+	state = 1;
1388	+	await(latch);
1389	+	state = 2;
1390	+	}
1391	+	}
1392	+
1393	+	public LatchAwaiter awaiter(CountDownLatch latch) {
1394	+	return new LatchAwaiter(latch);
1395	+	}
1396	+
1397	+	public void await(CountDownLatch latch) {
1398	+	try {
1399	+	if (!latch.await(LONG_DELAY_MS, MILLISECONDS))
1400	+	fail("timed out waiting for CountDownLatch for "
1401	+	+ (LONG_DELAY_MS/1000) + " sec");
1402	+	} catch (Throwable fail) {
1403	+	threadUnexpectedException(fail);
1404	+	}
1405	+	}
1406	+
1407	+	public void await(Semaphore semaphore) {
1408	+	try {
1409	+	if (!semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS))
1410	+	fail("timed out waiting for Semaphore for "
1411	+	+ (LONG_DELAY_MS/1000) + " sec");
1412	+	} catch (Throwable fail) {
1413	+	threadUnexpectedException(fail);
1414	+	}
1415	+	}
1416	+
1417	+	//     /**
1418	+	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1419	+	//      */
1420	+	//     public void await(AtomicBoolean flag) {
1421	+	//         await(flag, LONG_DELAY_MS);
1422	+	//     }
1423	+
1424	+	//     /**
1425	+	//      * Spin-waits up to the specified timeout until flag becomes true.
1426	+	//      */
1427	+	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1428	+	//         long startTime = System.nanoTime();
1429	+	//         while (!flag.get()) {
1430	+	//             if (millisElapsedSince(startTime) > timeoutMillis)
1431	+	//                 throw new AssertionFailedError("timed out");
1432	+	//             Thread.yield();
1433	+	//         }
1434	+	//     }
1435	+
1436		public static class NPETask implements Callable<String> {
1437		public String call() { throw new NullPointerException(); }
1438		}
#	Line 560 | Line 1443 | public class JSR166TestCase extends Test
1443
1444		public class ShortRunnable extends CheckedRunnable {
1445		protected void realRun() throws Throwable {
1446	<	Thread.sleep(SHORT_DELAY_MS);
1446	>	delay(SHORT_DELAY_MS);
1447		}
1448		}
1449
1450		public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1451		protected void realRun() throws InterruptedException {
1452	<	Thread.sleep(SHORT_DELAY_MS);
1452	>	delay(SHORT_DELAY_MS);
1453		}
1454		}
1455
1456		public class SmallRunnable extends CheckedRunnable {
1457		protected void realRun() throws Throwable {
1458	<	Thread.sleep(SMALL_DELAY_MS);
1458	>	delay(SMALL_DELAY_MS);
1459		}
1460		}
1461
1462		public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1463		protected void realRun() {
1464		try {
1465	<	Thread.sleep(SMALL_DELAY_MS);
1465	>	delay(SMALL_DELAY_MS);
1466		} catch (InterruptedException ok) {}
1467		}
1468		}
1469
1470		public class SmallCallable extends CheckedCallable {
1471		protected Object realCall() throws InterruptedException {
1472	<	Thread.sleep(SMALL_DELAY_MS);
1472	>	delay(SMALL_DELAY_MS);
1473		return Boolean.TRUE;
1474		}
1475		}
1476
594	–	public class SmallInterruptedRunnable extends CheckedInterruptedRunnable {
595	–	protected void realRun() throws InterruptedException {
596	–	Thread.sleep(SMALL_DELAY_MS);
597	–	}
598	–	}
599	–
1477		public class MediumRunnable extends CheckedRunnable {
1478		protected void realRun() throws Throwable {
1479	<	Thread.sleep(MEDIUM_DELAY_MS);
1479	>	delay(MEDIUM_DELAY_MS);
1480		}
1481		}
1482
1483		public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1484		protected void realRun() throws InterruptedException {
1485	<	Thread.sleep(MEDIUM_DELAY_MS);
1485	>	delay(MEDIUM_DELAY_MS);
1486		}
1487		}
1488
1489	+	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1490	+	return new CheckedRunnable() {
1491	+	protected void realRun() {
1492	+	try {
1493	+	delay(timeoutMillis);
1494	+	} catch (InterruptedException ok) {}
1495	+	}};
1496	+	}
1497	+
1498		public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1499		protected void realRun() {
1500		try {
1501	<	Thread.sleep(MEDIUM_DELAY_MS);
1501	>	delay(MEDIUM_DELAY_MS);
1502		} catch (InterruptedException ok) {}
1503		}
1504		}
#	Line 620 | Line 1506 | public class JSR166TestCase extends Test
1506		public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1507		protected void realRun() {
1508		try {
1509	<	Thread.sleep(LONG_DELAY_MS);
1509	>	delay(LONG_DELAY_MS);
1510		} catch (InterruptedException ok) {}
1511		}
1512		}
#	Line 634 | Line 1520 | public class JSR166TestCase extends Test
1520		}
1521		}
1522
1523	+	public interface TrackedRunnable extends Runnable {
1524	+	boolean isDone();
1525	+	}
1526	+
1527	+	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1528	+	return new TrackedRunnable() {
1529	+	private volatile boolean done = false;
1530	+	public boolean isDone() { return done; }
1531	+	public void run() {
1532	+	try {
1533	+	delay(timeoutMillis);
1534	+	done = true;
1535	+	} catch (InterruptedException ok) {}
1536	+	}
1537	+	};
1538	+	}
1539	+
1540		public static class TrackedShortRunnable implements Runnable {
1541		public volatile boolean done = false;
1542		public void run() {
1543		try {
1544	<	Thread.sleep(SMALL_DELAY_MS);
1544	>	delay(SHORT_DELAY_MS);
1545	>	done = true;
1546	>	} catch (InterruptedException ok) {}
1547	>	}
1548	>	}
1549	>
1550	>	public static class TrackedSmallRunnable implements Runnable {
1551	>	public volatile boolean done = false;
1552	>	public void run() {
1553	>	try {
1554	>	delay(SMALL_DELAY_MS);
1555		done = true;
1556		} catch (InterruptedException ok) {}
1557		}
#	Line 648 | Line 1561 | public class JSR166TestCase extends Test
1561		public volatile boolean done = false;
1562		public void run() {
1563		try {
1564	<	Thread.sleep(MEDIUM_DELAY_MS);
1564	>	delay(MEDIUM_DELAY_MS);
1565		done = true;
1566		} catch (InterruptedException ok) {}
1567		}
#	Line 658 | Line 1571 | public class JSR166TestCase extends Test
1571		public volatile boolean done = false;
1572		public void run() {
1573		try {
1574	<	Thread.sleep(LONG_DELAY_MS);
1574	>	delay(LONG_DELAY_MS);
1575		done = true;
1576		} catch (InterruptedException ok) {}
1577		}
#	Line 675 | Line 1588 | public class JSR166TestCase extends Test
1588		public volatile boolean done = false;
1589		public Object call() {
1590		try {
1591	<	Thread.sleep(SMALL_DELAY_MS);
1591	>	delay(SMALL_DELAY_MS);
1592		done = true;
1593		} catch (InterruptedException ok) {}
1594		return Boolean.TRUE;
1595		}
1596		}
1597
1598	+	/**
1599	+	* Analog of CheckedRunnable for RecursiveAction
1600	+	*/
1601	+	public abstract class CheckedRecursiveAction extends RecursiveAction {
1602	+	protected abstract void realCompute() throws Throwable;
1603	+
1604	+	@Override protected final void compute() {
1605	+	try {
1606	+	realCompute();
1607	+	} catch (Throwable fail) {
1608	+	threadUnexpectedException(fail);
1609	+	}
1610	+	}
1611	+	}
1612	+
1613	+	/**
1614	+	* Analog of CheckedCallable for RecursiveTask
1615	+	*/
1616	+	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1617	+	protected abstract T realCompute() throws Throwable;
1618	+
1619	+	@Override protected final T compute() {
1620	+	try {
1621	+	return realCompute();
1622	+	} catch (Throwable fail) {
1623	+	threadUnexpectedException(fail);
1624	+	return null;
1625	+	}
1626	+	}
1627	+	}
1628
1629		/**
1630		* For use as RejectedExecutionHandler in constructors
#	Line 691 | Line 1634 | public class JSR166TestCase extends Test
1634		ThreadPoolExecutor executor) {}
1635		}
1636
1637	+	/**
1638	+	* A CyclicBarrier that uses timed await and fails with
1639	+	* AssertionFailedErrors instead of throwing checked exceptions.
1640	+	*/
1641	+	public class CheckedBarrier extends CyclicBarrier {
1642	+	public CheckedBarrier(int parties) { super(parties); }
1643	+
1644	+	public int await() {
1645	+	try {
1646	+	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1647	+	} catch (TimeoutException timedOut) {
1648	+	throw new AssertionFailedError("timed out");
1649	+	} catch (Exception fail) {
1650	+	AssertionFailedError afe =
1651	+	new AssertionFailedError("Unexpected exception: " + fail);
1652	+	afe.initCause(fail);
1653	+	throw afe;
1654	+	}
1655	+	}
1656	+	}
1657	+
1658	+	void checkEmpty(BlockingQueue q) {
1659	+	try {
1660	+	assertTrue(q.isEmpty());
1661	+	assertEquals(0, q.size());
1662	+	assertNull(q.peek());
1663	+	assertNull(q.poll());
1664	+	assertNull(q.poll(0, MILLISECONDS));
1665	+	assertEquals(q.toString(), "[]");
1666	+	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1667	+	assertFalse(q.iterator().hasNext());
1668	+	try {
1669	+	q.element();
1670	+	shouldThrow();
1671	+	} catch (NoSuchElementException success) {}
1672	+	try {
1673	+	q.iterator().next();
1674	+	shouldThrow();
1675	+	} catch (NoSuchElementException success) {}
1676	+	try {
1677	+	q.remove();
1678	+	shouldThrow();
1679	+	} catch (NoSuchElementException success) {}
1680	+	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1681	+	}
1682	+
1683	+	void assertSerialEquals(Object x, Object y) {
1684	+	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1685	+	}
1686	+
1687	+	void assertNotSerialEquals(Object x, Object y) {
1688	+	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1689	+	}
1690	+
1691	+	byte[] serialBytes(Object o) {
1692	+	try {
1693	+	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1694	+	ObjectOutputStream oos = new ObjectOutputStream(bos);
1695	+	oos.writeObject(o);
1696	+	oos.flush();
1697	+	oos.close();
1698	+	return bos.toByteArray();
1699	+	} catch (Throwable fail) {
1700	+	threadUnexpectedException(fail);
1701	+	return new byte[0];
1702	+	}
1703	+	}
1704	+
1705	+	@SuppressWarnings("unchecked")
1706	+	<T> T serialClone(T o) {
1707	+	try {
1708	+	ObjectInputStream ois = new ObjectInputStream
1709	+	(new ByteArrayInputStream(serialBytes(o)));
1710	+	T clone = (T) ois.readObject();
1711	+	assertSame(o.getClass(), clone.getClass());
1712	+	return clone;
1713	+	} catch (Throwable fail) {
1714	+	threadUnexpectedException(fail);
1715	+	return null;
1716	+	}
1717	+	}
1718	+
1719	+	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1720	+	Runnable... throwingActions) {
1721	+	for (Runnable throwingAction : throwingActions) {
1722	+	boolean threw = false;
1723	+	try { throwingAction.run(); }
1724	+	catch (Throwable t) {
1725	+	threw = true;
1726	+	if (!expectedExceptionClass.isInstance(t)) {
1727	+	AssertionFailedError afe =
1728	+	new AssertionFailedError
1729	+	("Expected " + expectedExceptionClass.getName() +
1730	+	", got " + t.getClass().getName());
1731	+	afe.initCause(t);
1732	+	threadUnexpectedException(afe);
1733	+	}
1734	+	}
1735	+	if (!threw)
1736	+	shouldThrow(expectedExceptionClass.getName());
1737	+	}
1738	+	}
1739	+
1740	+	public void assertIteratorExhausted(Iterator<?> it) {
1741	+	try {
1742	+	it.next();
1743	+	shouldThrow();
1744	+	} catch (NoSuchElementException success) {}
1745	+	assertFalse(it.hasNext());
1746	+	}
1747		}

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