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Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.29 by dl, Sat Oct 1 17:05:38 2005 UTC vs.
Revision 1.148 by jsr166, Mon Sep 28 08:23:49 2015 UTC

#	Line 1 | Line 1
1		/*
2		* Written by Doug Lea with assistance from members of JCP JSR-166
3		* Expert Group and released to the public domain, as explained at
4	<	* http://creativecommons.org/licenses/publicdomain
4	>	* http://creativecommons.org/publicdomain/zero/1.0/
5		* Other contributors include Andrew Wright, Jeffrey Hayes,
6		* Pat Fisher, Mike Judd.
7		*/
8
9	<	import junit.framework.*;
10	<	import java.util.*;
11	<	import java.util.concurrent.*;
12	<	import java.io.*;
13	<	import java.security.*;
9	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
10	>	import static java.util.concurrent.TimeUnit.NANOSECONDS;
11	>
12	>	import java.io.ByteArrayInputStream;
13	>	import java.io.ByteArrayOutputStream;
14	>	import java.io.ObjectInputStream;
15	>	import java.io.ObjectOutputStream;
16	>	import java.lang.management.ManagementFactory;
17	>	import java.lang.management.ThreadInfo;
18	>	import java.lang.reflect.Constructor;
19	>	import java.lang.reflect.Method;
20	>	import java.lang.reflect.Modifier;
21	>	import java.security.CodeSource;
22	>	import java.security.Permission;
23	>	import java.security.PermissionCollection;
24	>	import java.security.Permissions;
25	>	import java.security.Policy;
26	>	import java.security.ProtectionDomain;
27	>	import java.security.SecurityPermission;
28	>	import java.util.ArrayList;
29	>	import java.util.Arrays;
30	>	import java.util.Date;
31	>	import java.util.Enumeration;
32	>	import java.util.Iterator;
33	>	import java.util.List;
34	>	import java.util.NoSuchElementException;
35	>	import java.util.PropertyPermission;
36	>	import java.util.concurrent.BlockingQueue;
37	>	import java.util.concurrent.Callable;
38	>	import java.util.concurrent.CountDownLatch;
39	>	import java.util.concurrent.CyclicBarrier;
40	>	import java.util.concurrent.ExecutionException;
41	>	import java.util.concurrent.Executors;
42	>	import java.util.concurrent.ExecutorService;
43	>	import java.util.concurrent.ForkJoinPool;
44	>	import java.util.concurrent.Future;
45	>	import java.util.concurrent.RecursiveAction;
46	>	import java.util.concurrent.RecursiveTask;
47	>	import java.util.concurrent.RejectedExecutionHandler;
48	>	import java.util.concurrent.Semaphore;
49	>	import java.util.concurrent.ThreadFactory;
50	>	import java.util.concurrent.ThreadPoolExecutor;
51	>	import java.util.concurrent.TimeoutException;
52	>	import java.util.concurrent.atomic.AtomicReference;
53	>	import java.util.regex.Pattern;
54	>
55	>	import junit.framework.AssertionFailedError;
56	>	import junit.framework.Test;
57	>	import junit.framework.TestCase;
58	>	import junit.framework.TestResult;
59	>	import junit.framework.TestSuite;
60
61		/**
62		* Base class for JSR166 Junit TCK tests.  Defines some constants,
#	Line 22 | Line 68 | import java.security.*;
68		*
69		* <ol>
70		*
71	<	* <li> All assertions in code running in generated threads must use
71	>	* <li>All assertions in code running in generated threads must use
72		* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
73		* #threadAssertEquals}, or {@link #threadAssertNull}, (not
74	<	* <tt>fail</tt>, <tt>assertTrue</tt>, etc.) It is OK (but not
74	>	* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
75		* particularly recommended) for other code to use these forms too.
76		* Only the most typically used JUnit assertion methods are defined
77	<	* this way, but enough to live with.</li>
77	>	* this way, but enough to live with.
78		*
79	<	* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
80	<	* to invoke <tt>super.setUp</tt> and <tt>super.tearDown</tt> within
79	>	* <li>If you override {@link #setUp} or {@link #tearDown}, make sure
80	>	* to invoke {@code super.setUp} and {@code super.tearDown} within
81		* them. These methods are used to clear and check for thread
82	<	* assertion failures.</li>
82	>	* assertion failures.
83		*
84	<	* <li>All delays and timeouts must use one of the constants <tt>
85	<	* SHORT_DELAY_MS</tt>, <tt> SMALL_DELAY_MS</tt>, <tt> MEDIUM_DELAY_MS</tt>,
86	<	* <tt> LONG_DELAY_MS</tt>. The idea here is that a SHORT is always
84	>	* <li>All delays and timeouts must use one of the constants {@code
85	>	* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
86	>	* {@code LONG_DELAY_MS}. The idea here is that a SHORT is always
87		* discriminable from zero time, and always allows enough time for the
88		* small amounts of computation (creating a thread, calling a few
89		* methods, etc) needed to reach a timeout point. Similarly, a SMALL
90		* is always discriminable as larger than SHORT and smaller than
91		* MEDIUM.  And so on. These constants are set to conservative values,
92		* but even so, if there is ever any doubt, they can all be increased
93	<	* in one spot to rerun tests on slower platforms.</li>
93	>	* in one spot to rerun tests on slower platforms.
94		*
95	<	* <li> All threads generated must be joined inside each test case
96	<	* method (or <tt>fail</tt> to do so) before returning from the
97	<	* method. The <tt> joinPool</tt> method can be used to do this when
98	<	* using Executors.</li>
95	>	* <li>All threads generated must be joined inside each test case
96	>	* method (or {@code fail} to do so) before returning from the
97	>	* method. The {@code joinPool} method can be used to do this when
98	>	* using Executors.
99		*
100		* </ol>
101		*
102	<	* <p> <b>Other notes</b>
102	>	* <p><b>Other notes</b>
103		* <ul>
104		*
105	<	* <li> Usually, there is one testcase method per JSR166 method
105	>	* <li>Usually, there is one testcase method per JSR166 method
106		* covering "normal" operation, and then as many exception-testing
107		* methods as there are exceptions the method can throw. Sometimes
108		* there are multiple tests per JSR166 method when the different
109		* "normal" behaviors differ significantly. And sometimes testcases
110		* cover multiple methods when they cannot be tested in
111	<	* isolation.</li>
111	>	* isolation.
112		*
113	<	* <li> The documentation style for testcases is to provide as javadoc
113	>	* <li>The documentation style for testcases is to provide as javadoc
114		* a simple sentence or two describing the property that the testcase
115		* method purports to test. The javadocs do not say anything about how
116	<	* the property is tested. To find out, read the code.</li>
116	>	* the property is tested. To find out, read the code.
117		*
118	<	* <li> These tests are "conformance tests", and do not attempt to
118	>	* <li>These tests are "conformance tests", and do not attempt to
119		* test throughput, latency, scalability or other performance factors
120		* (see the separate "jtreg" tests for a set intended to check these
121		* for the most central aspects of functionality.) So, most tests use
122		* the smallest sensible numbers of threads, collection sizes, etc
123	<	* needed to check basic conformance.</li>
123	>	* needed to check basic conformance.
124		*
125		* <li>The test classes currently do not declare inclusion in
126		* any particular package to simplify things for people integrating
127	<	* them in TCK test suites.</li>
127	>	* them in TCK test suites.
128		*
129	<	* <li> As a convenience, the <tt>main</tt> of this class (JSR166TestCase)
130	<	* runs all JSR166 unit tests.</li>
129	>	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
130	>	* runs all JSR166 unit tests.
131		*
132		* </ul>
133		*/
134		public class JSR166TestCase extends TestCase {
135	+	private static final boolean useSecurityManager =
136	+	Boolean.getBoolean("jsr166.useSecurityManager");
137	+
138	+	protected static final boolean expensiveTests =
139	+	Boolean.getBoolean("jsr166.expensiveTests");
140	+
141	+	/**
142	+	* If true, also run tests that are not part of the official tck
143	+	* because they test unspecified implementation details.
144	+	*/
145	+	protected static final boolean testImplementationDetails =
146	+	Boolean.getBoolean("jsr166.testImplementationDetails");
147	+
148	+	/**
149	+	* If true, report on stdout all "slow" tests, that is, ones that
150	+	* take more than profileThreshold milliseconds to execute.
151	+	*/
152	+	private static final boolean profileTests =
153	+	Boolean.getBoolean("jsr166.profileTests");
154	+
155	+	/**
156	+	* The number of milliseconds that tests are permitted for
157	+	* execution without being reported, when profileTests is set.
158	+	*/
159	+	private static final long profileThreshold =
160	+	Long.getLong("jsr166.profileThreshold", 100);
161	+
162		/**
163	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
163	>	* The number of repetitions per test (for tickling rare bugs).
164		*/
165	<	public static void main (String[] args) {
166	<	int iters = 1;
167	<	if (args.length > 0)
168	<	iters = Integer.parseInt(args[0]);
169	<	Test s = suite();
170	<	for (int i = 0; i < iters; ++i) {
171	<	junit.textui.TestRunner.run (s);
165	>	private static final int runsPerTest =
166	>	Integer.getInteger("jsr166.runsPerTest", 1);
167	>
168	>	/**
169	>	* The number of repetitions of the test suite (for finding leaks?).
170	>	*/
171	>	private static final int suiteRuns =
172	>	Integer.getInteger("jsr166.suiteRuns", 1);
173	>
174	>	public JSR166TestCase() { super(); }
175	>	public JSR166TestCase(String name) { super(name); }
176	>
177	>	/**
178	>	* A filter for tests to run, matching strings of the form
179	>	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
180	>	* Usefully combined with jsr166.runsPerTest.
181	>	*/
182	>	private static final Pattern methodFilter = methodFilter();
183	>
184	>	private static Pattern methodFilter() {
185	>	String regex = System.getProperty("jsr166.methodFilter");
186	>	return (regex == null) ? null : Pattern.compile(regex);
187	>	}
188	>
189	>	public void runBare() throws Throwable {
190	>	if (methodFilter == null
191	>	|| methodFilter.matcher(toString()).find())
192	>	super.runBare();
193	>	}
194	>
195	>	protected void runTest() throws Throwable {
196	>	for (int i = 0; i < runsPerTest; i++) {
197	>	if (profileTests)
198	>	runTestProfiled();
199	>	else
200	>	super.runTest();
201	>	}
202	>	}
203	>
204	>	protected void runTestProfiled() throws Throwable {
205	>	for (int i = 0; i < 2; i++) {
206	>	long startTime = System.nanoTime();
207	>	super.runTest();
208	>	long elapsedMillis = millisElapsedSince(startTime);
209	>	if (elapsedMillis < profileThreshold)
210	>	break;
211	>	// Never report first run of any test; treat it as a
212	>	// warmup run, notably to trigger all needed classloading,
213	>	if (i > 0)
214	>	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
215	>	}
216	>	}
217	>
218	>	/**
219	>	* Runs all JSR166 unit tests using junit.textui.TestRunner.
220	>	*/
221	>	public static void main(String[] args) {
222	>	main(suite(), args);
223	>	}
224	>
225	>	/**
226	>	* Runs all unit tests in the given test suite.
227	>	* Actual behavior influenced by jsr166.* system properties.
228	>	*/
229	>	static void main(Test suite, String[] args) {
230	>	if (useSecurityManager) {
231	>	System.err.println("Setting a permissive security manager");
232	>	Policy.setPolicy(permissivePolicy());
233	>	System.setSecurityManager(new SecurityManager());
234	>	}
235	>	for (int i = 0; i < suiteRuns; i++) {
236	>	TestResult result = junit.textui.TestRunner.run(suite);
237	>	if (!result.wasSuccessful())
238	>	System.exit(1);
239		System.gc();
240		System.runFinalization();
241		}
242	<	System.exit(0);
242	>	}
243	>
244	>	public static TestSuite newTestSuite(Object... suiteOrClasses) {
245	>	TestSuite suite = new TestSuite();
246	>	for (Object suiteOrClass : suiteOrClasses) {
247	>	if (suiteOrClass instanceof TestSuite)
248	>	suite.addTest((TestSuite) suiteOrClass);
249	>	else if (suiteOrClass instanceof Class)
250	>	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
251	>	else
252	>	throw new ClassCastException("not a test suite or class");
253	>	}
254	>	return suite;
255	>	}
256	>
257	>	public static void addNamedTestClasses(TestSuite suite,
258	>	String... testClassNames) {
259	>	for (String testClassName : testClassNames) {
260	>	try {
261	>	Class<?> testClass = Class.forName(testClassName);
262	>	Method m = testClass.getDeclaredMethod("suite",
263	>	new Class<?>[0]);
264	>	suite.addTest(newTestSuite((Test)m.invoke(null)));
265	>	} catch (Exception e) {
266	>	throw new Error("Missing test class", e);
267	>	}
268	>	}
269	>	}
270	>
271	>	public static final double JAVA_CLASS_VERSION;
272	>	public static final String JAVA_SPECIFICATION_VERSION;
273	>	static {
274	>	try {
275	>	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
276	>	new java.security.PrivilegedAction<Double>() {
277	>	public Double run() {
278	>	return Double.valueOf(System.getProperty("java.class.version"));}});
279	>	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
280	>	new java.security.PrivilegedAction<String>() {
281	>	public String run() {
282	>	return System.getProperty("java.specification.version");}});
283	>	} catch (Throwable t) {
284	>	throw new Error(t);
285	>	}
286	>	}
287	>
288	>	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
289	>	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
290	>	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
291	>	public static boolean atLeastJava9() {
292	>	return JAVA_CLASS_VERSION >= 53.0
293	>	// As of 2015-09, java9 still uses 52.0 class file version
294	>	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?(9|[0-9][0-9])$");
295	>	}
296	>	public static boolean atLeastJava10() {
297	>	return JAVA_CLASS_VERSION >= 54.0
298	>	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?[0-9][0-9]$");
299	>	}
300	>
301	>	/**
302	>	* Collects all JSR166 unit tests as one suite.
303	>	*/
304	>	public static Test suite() {
305	>	// Java7+ test classes
306	>	TestSuite suite = newTestSuite(
307	>	ForkJoinPoolTest.suite(),
308	>	ForkJoinTaskTest.suite(),
309	>	RecursiveActionTest.suite(),
310	>	RecursiveTaskTest.suite(),
311	>	LinkedTransferQueueTest.suite(),
312	>	PhaserTest.suite(),
313	>	ThreadLocalRandomTest.suite(),
314	>	AbstractExecutorServiceTest.suite(),
315	>	AbstractQueueTest.suite(),
316	>	AbstractQueuedSynchronizerTest.suite(),
317	>	AbstractQueuedLongSynchronizerTest.suite(),
318	>	ArrayBlockingQueueTest.suite(),
319	>	ArrayDequeTest.suite(),
320	>	AtomicBooleanTest.suite(),
321	>	AtomicIntegerArrayTest.suite(),
322	>	AtomicIntegerFieldUpdaterTest.suite(),
323	>	AtomicIntegerTest.suite(),
324	>	AtomicLongArrayTest.suite(),
325	>	AtomicLongFieldUpdaterTest.suite(),
326	>	AtomicLongTest.suite(),
327	>	AtomicMarkableReferenceTest.suite(),
328	>	AtomicReferenceArrayTest.suite(),
329	>	AtomicReferenceFieldUpdaterTest.suite(),
330	>	AtomicReferenceTest.suite(),
331	>	AtomicStampedReferenceTest.suite(),
332	>	ConcurrentHashMapTest.suite(),
333	>	ConcurrentLinkedDequeTest.suite(),
334	>	ConcurrentLinkedQueueTest.suite(),
335	>	ConcurrentSkipListMapTest.suite(),
336	>	ConcurrentSkipListSubMapTest.suite(),
337	>	ConcurrentSkipListSetTest.suite(),
338	>	ConcurrentSkipListSubSetTest.suite(),
339	>	CopyOnWriteArrayListTest.suite(),
340	>	CopyOnWriteArraySetTest.suite(),
341	>	CountDownLatchTest.suite(),
342	>	CyclicBarrierTest.suite(),
343	>	DelayQueueTest.suite(),
344	>	EntryTest.suite(),
345	>	ExchangerTest.suite(),
346	>	ExecutorsTest.suite(),
347	>	ExecutorCompletionServiceTest.suite(),
348	>	FutureTaskTest.suite(),
349	>	LinkedBlockingDequeTest.suite(),
350	>	LinkedBlockingQueueTest.suite(),
351	>	LinkedListTest.suite(),
352	>	LockSupportTest.suite(),
353	>	PriorityBlockingQueueTest.suite(),
354	>	PriorityQueueTest.suite(),
355	>	ReentrantLockTest.suite(),
356	>	ReentrantReadWriteLockTest.suite(),
357	>	ScheduledExecutorTest.suite(),
358	>	ScheduledExecutorSubclassTest.suite(),
359	>	SemaphoreTest.suite(),
360	>	SynchronousQueueTest.suite(),
361	>	SystemTest.suite(),
362	>	ThreadLocalTest.suite(),
363	>	ThreadPoolExecutorTest.suite(),
364	>	ThreadPoolExecutorSubclassTest.suite(),
365	>	ThreadTest.suite(),
366	>	TimeUnitTest.suite(),
367	>	TreeMapTest.suite(),
368	>	TreeSetTest.suite(),
369	>	TreeSubMapTest.suite(),
370	>	TreeSubSetTest.suite());
371	>
372	>	// Java8+ test classes
373	>	if (atLeastJava8()) {
374	>	String[] java8TestClassNames = {
375	>	"Atomic8Test",
376	>	"CompletableFutureTest",
377	>	"ConcurrentHashMap8Test",
378	>	"CountedCompleterTest",
379	>	"DoubleAccumulatorTest",
380	>	"DoubleAdderTest",
381	>	"ForkJoinPool8Test",
382	>	"ForkJoinTask8Test",
383	>	"LongAccumulatorTest",
384	>	"LongAdderTest",
385	>	"SplittableRandomTest",
386	>	"StampedLockTest",
387	>	"SubmissionPublisherTest",
388	>	"ThreadLocalRandom8Test",
389	>	};
390	>	addNamedTestClasses(suite, java8TestClassNames);
391	>	}
392	>
393	>	// Java9+ test classes
394	>	if (atLeastJava9()) {
395	>	String[] java9TestClassNames = {
396	>	// Currently empty, but expecting varhandle tests
397	>	};
398	>	addNamedTestClasses(suite, java9TestClassNames);
399	>	}
400	>
401	>	return suite;
402	>	}
403	>
404	>	/** Returns list of junit-style test method names in given class. */
405	>	public static ArrayList<String> testMethodNames(Class<?> testClass) {
406	>	Method[] methods = testClass.getDeclaredMethods();
407	>	ArrayList<String> names = new ArrayList<String>(methods.length);
408	>	for (Method method : methods) {
409	>	if (method.getName().startsWith("test")
410	>	&& Modifier.isPublic(method.getModifiers())
411	>	// method.getParameterCount() requires jdk8+
412	>	&& method.getParameterTypes().length == 0) {
413	>	names.add(method.getName());
414	>	}
415	>	}
416	>	return names;
417		}
418
419		/**
420	<	* Collects all JSR166 unit tests as one suite
420	>	* Returns junit-style testSuite for the given test class, but
421	>	* parameterized by passing extra data to each test.
422		*/
423	<	public static Test suite ( ) {
424	<	TestSuite suite = new TestSuite("JSR166 Unit Tests");
423	>	public static <ExtraData> Test parameterizedTestSuite
424	>	(Class<? extends JSR166TestCase> testClass,
425	>	Class<ExtraData> dataClass,
426	>	ExtraData data) {
427	>	try {
428	>	TestSuite suite = new TestSuite();
429	>	Constructor c =
430	>	testClass.getDeclaredConstructor(dataClass, String.class);
431	>	for (String methodName : testMethodNames(testClass))
432	>	suite.addTest((Test) c.newInstance(data, methodName));
433	>	return suite;
434	>	} catch (Exception e) {
435	>	throw new Error(e);
436	>	}
437	>	}
438
439	<	suite.addTest(new TestSuite(AbstractExecutorServiceTest.class));
440	<	suite.addTest(new TestSuite(AbstractQueueTest.class));
441	<	suite.addTest(new TestSuite(AbstractQueuedSynchronizerTest.class));
442	<	suite.addTest(new TestSuite(AbstractQueuedLongSynchronizerTest.class));
443	<	suite.addTest(new TestSuite(ArrayBlockingQueueTest.class));
444	<	suite.addTest(new TestSuite(ArrayDequeTest.class));
445	<	suite.addTest(new TestSuite(AtomicBooleanTest.class));
446	<	suite.addTest(new TestSuite(AtomicIntegerArrayTest.class));
447	<	suite.addTest(new TestSuite(AtomicIntegerFieldUpdaterTest.class));
448	<	suite.addTest(new TestSuite(AtomicIntegerTest.class));
449	<	suite.addTest(new TestSuite(AtomicLongArrayTest.class));
450	<	suite.addTest(new TestSuite(AtomicLongFieldUpdaterTest.class));
451	<	suite.addTest(new TestSuite(AtomicLongTest.class));
452	<	suite.addTest(new TestSuite(AtomicMarkableReferenceTest.class));
453	<	suite.addTest(new TestSuite(AtomicReferenceArrayTest.class));
454	<	suite.addTest(new TestSuite(AtomicReferenceFieldUpdaterTest.class));
455	<	suite.addTest(new TestSuite(AtomicReferenceTest.class));
456	<	suite.addTest(new TestSuite(AtomicStampedReferenceTest.class));
457	<	suite.addTest(new TestSuite(ConcurrentHashMapTest.class));
458	<	suite.addTest(new TestSuite(ConcurrentLinkedQueueTest.class));
459	<	suite.addTest(new TestSuite(ConcurrentSkipListMapTest.class));
460	<	suite.addTest(new TestSuite(ConcurrentSkipListSubMapTest.class));
461	<	suite.addTest(new TestSuite(ConcurrentSkipListSetTest.class));
462	<	suite.addTest(new TestSuite(ConcurrentSkipListSubSetTest.class));
135	<	suite.addTest(new TestSuite(CopyOnWriteArrayListTest.class));
136	<	suite.addTest(new TestSuite(CopyOnWriteArraySetTest.class));
137	<	suite.addTest(new TestSuite(CountDownLatchTest.class));
138	<	suite.addTest(new TestSuite(CyclicBarrierTest.class));
139	<	suite.addTest(new TestSuite(DelayQueueTest.class));
140	<	suite.addTest(new TestSuite(EntryTest.class));
141	<	suite.addTest(new TestSuite(ExchangerTest.class));
142	<	suite.addTest(new TestSuite(ExecutorsTest.class));
143	<	suite.addTest(new TestSuite(ExecutorCompletionServiceTest.class));
144	<	suite.addTest(new TestSuite(FutureTaskTest.class));
145	<	suite.addTest(new TestSuite(LinkedBlockingDequeTest.class));
146	<	suite.addTest(new TestSuite(LinkedBlockingQueueTest.class));
147	<	suite.addTest(new TestSuite(LinkedListTest.class));
148	<	suite.addTest(new TestSuite(LockSupportTest.class));
149	<	suite.addTest(new TestSuite(PriorityBlockingQueueTest.class));
150	<	suite.addTest(new TestSuite(PriorityQueueTest.class));
151	<	suite.addTest(new TestSuite(ReentrantLockTest.class));
152	<	suite.addTest(new TestSuite(ReentrantReadWriteLockTest.class));
153	<	suite.addTest(new TestSuite(ScheduledExecutorTest.class));
154	<	suite.addTest(new TestSuite(ScheduledExecutorSubclassTest.class));
155	<	suite.addTest(new TestSuite(SemaphoreTest.class));
156	<	suite.addTest(new TestSuite(SynchronousQueueTest.class));
157	<	suite.addTest(new TestSuite(SystemTest.class));
158	<	suite.addTest(new TestSuite(ThreadLocalTest.class));
159	<	suite.addTest(new TestSuite(ThreadPoolExecutorTest.class));
160	<	suite.addTest(new TestSuite(ThreadPoolExecutorSubclassTest.class));
161	<	suite.addTest(new TestSuite(ThreadTest.class));
162	<	suite.addTest(new TestSuite(TimeUnitTest.class));
163	<	suite.addTest(new TestSuite(TreeMapTest.class));
164	<	suite.addTest(new TestSuite(TreeSetTest.class));
165	<	suite.addTest(new TestSuite(TreeSubMapTest.class));
166	<	suite.addTest(new TestSuite(TreeSubSetTest.class));
439	>	/**
440	>	* Returns junit-style testSuite for the jdk8 extension of the
441	>	* given test class, but parameterized by passing extra data to
442	>	* each test.  Uses reflection to allow compilation in jdk7.
443	>	*/
444	>	public static <ExtraData> Test jdk8ParameterizedTestSuite
445	>	(Class<? extends JSR166TestCase> testClass,
446	>	Class<ExtraData> dataClass,
447	>	ExtraData data) {
448	>	if (atLeastJava8()) {
449	>	String name = testClass.getName();
450	>	String name8 = name.replaceAll("Test$", "8Test");
451	>	if (name.equals(name8)) throw new Error(name);
452	>	try {
453	>	return (Test)
454	>	Class.forName(name8)
455	>	.getMethod("testSuite", new Class[] { dataClass })
456	>	.invoke(null, data);
457	>	} catch (Exception e) {
458	>	throw new Error(e);
459	>	}
460	>	} else {
461	>	return new TestSuite();
462	>	}
463
168	–	return suite;
464		}
465
466	+	// Delays for timing-dependent tests, in milliseconds.
467
468		public static long SHORT_DELAY_MS;
469		public static long SMALL_DELAY_MS;
470		public static long MEDIUM_DELAY_MS;
471		public static long LONG_DELAY_MS;
472
177	–
473		/**
474		* Returns the shortest timed delay. This could
475		* be reimplemented to use for example a Property.
#	Line 183 | Line 478 | public class JSR166TestCase extends Test
478		return 50;
479		}
480
186	–
481		/**
482		* Sets delays as multiples of SHORT_DELAY.
483		*/
484	<	protected  void setDelays() {
484	>	protected void setDelays() {
485		SHORT_DELAY_MS = getShortDelay();
486	<	SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
486	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
487		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
488	<	LONG_DELAY_MS = SHORT_DELAY_MS * 50;
488	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
489	>	}
490	>
491	>	/**
492	>	* Returns a timeout in milliseconds to be used in tests that
493	>	* verify that operations block or time out.
494	>	*/
495	>	long timeoutMillis() {
496	>	return SHORT_DELAY_MS / 4;
497		}
498
499		/**
500	<	* Flag set true if any threadAssert methods fail
500	>	* Returns a new Date instance representing a time at least
501	>	* delayMillis milliseconds in the future.
502		*/
503	<	volatile boolean threadFailed;
503	>	Date delayedDate(long delayMillis) {
504	>	// Add 1 because currentTimeMillis is known to round into the past.
505	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
506	>	}
507
508		/**
509	<	* Initializes test to indicate that no thread assertions have failed
509	>	* The first exception encountered if any threadAssertXXX method fails.
510		*/
511	+	private final AtomicReference<Throwable> threadFailure
512	+	= new AtomicReference<Throwable>(null);
513	+
514	+	/**
515	+	* Records an exception so that it can be rethrown later in the test
516	+	* harness thread, triggering a test case failure.  Only the first
517	+	* failure is recorded; subsequent calls to this method from within
518	+	* the same test have no effect.
519	+	*/
520	+	public void threadRecordFailure(Throwable t) {
521	+	threadFailure.compareAndSet(null, t);
522	+	}
523	+
524		public void setUp() {
525		setDelays();
526	<	threadFailed = false;
526	>	}
527	>
528	>	void tearDownFail(String format, Object... args) {
529	>	String msg = toString() + ": " + String.format(format, args);
530	>	System.err.println(msg);
531	>	printAllStackTraces();
532	>	throw new AssertionFailedError(msg);
533		}
534
535		/**
536	<	* Triggers test case failure if any thread assertions have failed
536	>	* Extra checks that get done for all test cases.
537	>	*
538	>	* Triggers test case failure if any thread assertions have failed,
539	>	* by rethrowing, in the test harness thread, any exception recorded
540	>	* earlier by threadRecordFailure.
541	>	*
542	>	* Triggers test case failure if interrupt status is set in the main thread.
543		*/
544	<	public void tearDown() {
545	<	assertFalse(threadFailed);
544	>	public void tearDown() throws Exception {
545	>	Throwable t = threadFailure.getAndSet(null);
546	>	if (t != null) {
547	>	if (t instanceof Error)
548	>	throw (Error) t;
549	>	else if (t instanceof RuntimeException)
550	>	throw (RuntimeException) t;
551	>	else if (t instanceof Exception)
552	>	throw (Exception) t;
553	>	else {
554	>	AssertionFailedError afe =
555	>	new AssertionFailedError(t.toString());
556	>	afe.initCause(t);
557	>	throw afe;
558	>	}
559	>	}
560	>
561	>	if (Thread.interrupted())
562	>	tearDownFail("interrupt status set in main thread");
563	>
564	>	checkForkJoinPoolThreadLeaks();
565	>	}
566	>
567	>	/**
568	>	* Finds missing try { ... } finally { joinPool(e); }
569	>	*/
570	>	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
571	>	Thread[] survivors = new Thread[7];
572	>	int count = Thread.enumerate(survivors);
573	>	for (int i = 0; i < count; i++) {
574	>	Thread thread = survivors[i];
575	>	String name = thread.getName();
576	>	if (name.startsWith("ForkJoinPool-")) {
577	>	// give thread some time to terminate
578	>	thread.join(LONG_DELAY_MS);
579	>	if (thread.isAlive())
580	>	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
581	>	thread);
582	>	}
583	>	}
584	>
585	>	if (!ForkJoinPool.commonPool()
586	>	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
587	>	tearDownFail("ForkJoin common pool thread stuck");
588		}
589
590		/**
591	<	* Fail, also setting status to indicate current testcase should fail
591	>	* Just like fail(reason), but additionally recording (using
592	>	* threadRecordFailure) any AssertionFailedError thrown, so that
593	>	* the current testcase will fail.
594		*/
595		public void threadFail(String reason) {
596	<	threadFailed = true;
597	<	fail(reason);
596	>	try {
597	>	fail(reason);
598	>	} catch (AssertionFailedError t) {
599	>	threadRecordFailure(t);
600	>	fail(reason);
601	>	}
602		}
603
604		/**
605	<	* If expression not true, set status to indicate current testcase
606	<	* should fail
605	>	* Just like assertTrue(b), but additionally recording (using
606	>	* threadRecordFailure) any AssertionFailedError thrown, so that
607	>	* the current testcase will fail.
608		*/
609		public void threadAssertTrue(boolean b) {
610	<	if (!b) {
231	<	threadFailed = true;
610	>	try {
611		assertTrue(b);
612	+	} catch (AssertionFailedError t) {
613	+	threadRecordFailure(t);
614	+	throw t;
615		}
616		}
617
618		/**
619	<	* If expression not false, set status to indicate current testcase
620	<	* should fail
619	>	* Just like assertFalse(b), but additionally recording (using
620	>	* threadRecordFailure) any AssertionFailedError thrown, so that
621	>	* the current testcase will fail.
622		*/
623		public void threadAssertFalse(boolean b) {
624	<	if (b) {
242	<	threadFailed = true;
624	>	try {
625		assertFalse(b);
626	+	} catch (AssertionFailedError t) {
627	+	threadRecordFailure(t);
628	+	throw t;
629		}
630		}
631
632		/**
633	<	* If argument not null, set status to indicate current testcase
634	<	* should fail
633	>	* Just like assertNull(x), but additionally recording (using
634	>	* threadRecordFailure) any AssertionFailedError thrown, so that
635	>	* the current testcase will fail.
636		*/
637		public void threadAssertNull(Object x) {
638	<	if (x != null) {
253	<	threadFailed = true;
638	>	try {
639		assertNull(x);
640	+	} catch (AssertionFailedError t) {
641	+	threadRecordFailure(t);
642	+	throw t;
643		}
644		}
645
646		/**
647	<	* If arguments not equal, set status to indicate current testcase
648	<	* should fail
647	>	* Just like assertEquals(x, y), but additionally recording (using
648	>	* threadRecordFailure) any AssertionFailedError thrown, so that
649	>	* the current testcase will fail.
650		*/
651		public void threadAssertEquals(long x, long y) {
652	<	if (x != y) {
264	<	threadFailed = true;
652	>	try {
653		assertEquals(x, y);
654	+	} catch (AssertionFailedError t) {
655	+	threadRecordFailure(t);
656	+	throw t;
657		}
658		}
659
660		/**
661	<	* If arguments not equal, set status to indicate current testcase
662	<	* should fail
661	>	* Just like assertEquals(x, y), but additionally recording (using
662	>	* threadRecordFailure) any AssertionFailedError thrown, so that
663	>	* the current testcase will fail.
664		*/
665		public void threadAssertEquals(Object x, Object y) {
666	<	if (x != y && (x == null || !x.equals(y))) {
275	<	threadFailed = true;
666	>	try {
667		assertEquals(x, y);
668	+	} catch (AssertionFailedError fail) {
669	+	threadRecordFailure(fail);
670	+	throw fail;
671	+	} catch (Throwable fail) {
672	+	threadUnexpectedException(fail);
673	+	}
674	+	}
675	+
676	+	/**
677	+	* Just like assertSame(x, y), but additionally recording (using
678	+	* threadRecordFailure) any AssertionFailedError thrown, so that
679	+	* the current testcase will fail.
680	+	*/
681	+	public void threadAssertSame(Object x, Object y) {
682	+	try {
683	+	assertSame(x, y);
684	+	} catch (AssertionFailedError fail) {
685	+	threadRecordFailure(fail);
686	+	throw fail;
687		}
688		}
689
690		/**
691	<	* threadFail with message "should throw exception"
691	>	* Calls threadFail with message "should throw exception".
692		*/
693		public void threadShouldThrow() {
694	<	threadFailed = true;
285	<	fail("should throw exception");
694	>	threadFail("should throw exception");
695		}
696
697		/**
698	<	* threadFail with message "Unexpected exception"
698	>	* Calls threadFail with message "should throw" + exceptionName.
699		*/
700	<	public void threadUnexpectedException() {
701	<	threadFailed = true;
293	<	fail("Unexpected exception");
700	>	public void threadShouldThrow(String exceptionName) {
701	>	threadFail("should throw " + exceptionName);
702		}
703
704	+	/**
705	+	* Records the given exception using {@link #threadRecordFailure},
706	+	* then rethrows the exception, wrapping it in an
707	+	* AssertionFailedError if necessary.
708	+	*/
709	+	public void threadUnexpectedException(Throwable t) {
710	+	threadRecordFailure(t);
711	+	t.printStackTrace();
712	+	if (t instanceof RuntimeException)
713	+	throw (RuntimeException) t;
714	+	else if (t instanceof Error)
715	+	throw (Error) t;
716	+	else {
717	+	AssertionFailedError afe =
718	+	new AssertionFailedError("unexpected exception: " + t);
719	+	afe.initCause(t);
720	+	throw afe;
721	+	}
722	+	}
723	+
724	+	/**
725	+	* Delays, via Thread.sleep, for the given millisecond delay, but
726	+	* if the sleep is shorter than specified, may re-sleep or yield
727	+	* until time elapses.
728	+	*/
729	+	static void delay(long millis) throws InterruptedException {
730	+	long startTime = System.nanoTime();
731	+	long ns = millis * 1000 * 1000;
732	+	for (;;) {
733	+	if (millis > 0L)
734	+	Thread.sleep(millis);
735	+	else // too short to sleep
736	+	Thread.yield();
737	+	long d = ns - (System.nanoTime() - startTime);
738	+	if (d > 0L)
739	+	millis = d / (1000 * 1000);
740	+	else
741	+	break;
742	+	}
743	+	}
744
745		/**
746	<	* Wait out termination of a thread pool or fail doing so
746	>	* Waits out termination of a thread pool or fails doing so.
747		*/
748	<	public void joinPool(ExecutorService exec) {
748	>	void joinPool(ExecutorService pool) {
749		try {
750	<	exec.shutdown();
751	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
752	<	} catch(SecurityException ok) {
750	>	pool.shutdown();
751	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS))
752	>	fail("ExecutorService " + pool +
753	>	" did not terminate in a timely manner");
754	>	} catch (SecurityException ok) {
755		// Allowed in case test doesn't have privs
756	<	} catch(InterruptedException ie) {
757	<	fail("Unexpected exception");
756	>	} catch (InterruptedException fail) {
757	>	fail("Unexpected InterruptedException");
758	>	}
759	>	}
760	>
761	>	/** Like Runnable, but with the freedom to throw anything */
762	>	interface Action { public void run() throws Throwable; }
763	>
764	>	/**
765	>	* Runs all the given actions in parallel, failing if any fail.
766	>	* Useful for running multiple variants of tests that are
767	>	* necessarily individually slow because they must block.
768	>	*/
769	>	void testInParallel(Action ... actions) {
770	>	ExecutorService pool = Executors.newCachedThreadPool();
771	>	try {
772	>	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
773	>	for (final Action action : actions)
774	>	futures.add(pool.submit(new CheckedRunnable() {
775	>	public void realRun() throws Throwable { action.run();}}));
776	>	for (Future<?> future : futures)
777	>	try {
778	>	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
779	>	} catch (ExecutionException ex) {
780	>	threadUnexpectedException(ex.getCause());
781	>	} catch (Exception ex) {
782	>	threadUnexpectedException(ex);
783	>	}
784	>	} finally {
785	>	joinPool(pool);
786	>	}
787	>	}
788	>
789	>	/**
790	>	* A debugging tool to print all stack traces, as jstack does.
791	>	*/
792	>	static void printAllStackTraces() {
793	>	for (ThreadInfo info :
794	>	ManagementFactory.getThreadMXBean()
795	>	.dumpAllThreads(true, true))
796	>	System.err.print(info);
797	>	}
798	>
799	>	/**
800	>	* Checks that thread does not terminate within the default
801	>	* millisecond delay of {@code timeoutMillis()}.
802	>	*/
803	>	void assertThreadStaysAlive(Thread thread) {
804	>	assertThreadStaysAlive(thread, timeoutMillis());
805	>	}
806	>
807	>	/**
808	>	* Checks that thread does not terminate within the given millisecond delay.
809	>	*/
810	>	void assertThreadStaysAlive(Thread thread, long millis) {
811	>	try {
812	>	// No need to optimize the failing case via Thread.join.
813	>	delay(millis);
814	>	assertTrue(thread.isAlive());
815	>	} catch (InterruptedException fail) {
816	>	fail("Unexpected InterruptedException");
817	>	}
818	>	}
819	>
820	>	/**
821	>	* Checks that the threads do not terminate within the default
822	>	* millisecond delay of {@code timeoutMillis()}.
823	>	*/
824	>	void assertThreadsStayAlive(Thread... threads) {
825	>	assertThreadsStayAlive(timeoutMillis(), threads);
826	>	}
827	>
828	>	/**
829	>	* Checks that the threads do not terminate within the given millisecond delay.
830	>	*/
831	>	void assertThreadsStayAlive(long millis, Thread... threads) {
832	>	try {
833	>	// No need to optimize the failing case via Thread.join.
834	>	delay(millis);
835	>	for (Thread thread : threads)
836	>	assertTrue(thread.isAlive());
837	>	} catch (InterruptedException fail) {
838	>	fail("Unexpected InterruptedException");
839		}
840		}
841
842	+	/**
843	+	* Checks that future.get times out, with the default timeout of
844	+	* {@code timeoutMillis()}.
845	+	*/
846	+	void assertFutureTimesOut(Future future) {
847	+	assertFutureTimesOut(future, timeoutMillis());
848	+	}
849	+
850	+	/**
851	+	* Checks that future.get times out, with the given millisecond timeout.
852	+	*/
853	+	void assertFutureTimesOut(Future future, long timeoutMillis) {
854	+	long startTime = System.nanoTime();
855	+	try {
856	+	future.get(timeoutMillis, MILLISECONDS);
857	+	shouldThrow();
858	+	} catch (TimeoutException success) {
859	+	} catch (Exception fail) {
860	+	threadUnexpectedException(fail);
861	+	} finally { future.cancel(true); }
862	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
863	+	}
864
865		/**
866	<	* fail with message "should throw exception"
866	>	* Fails with message "should throw exception".
867		*/
868		public void shouldThrow() {
869		fail("Should throw exception");
870		}
871
872		/**
873	<	* fail with message "Unexpected exception"
873	>	* Fails with message "should throw " + exceptionName.
874		*/
875	<	public void unexpectedException() {
876	<	fail("Unexpected exception");
875	>	public void shouldThrow(String exceptionName) {
876	>	fail("Should throw " + exceptionName);
877		}
878
326	–
879		/**
880		* The number of elements to place in collections, arrays, etc.
881		*/
882	<	static final int SIZE = 20;
882	>	public static final int SIZE = 20;
883
884		// Some convenient Integer constants
885
886	<	static final Integer zero = new Integer(0);
887	<	static final Integer one = new Integer(1);
888	<	static final Integer two = new Integer(2);
889	<	static final Integer three  = new Integer(3);
890	<	static final Integer four  = new Integer(4);
891	<	static final Integer five  = new Integer(5);
892	<	static final Integer six = new Integer(6);
893	<	static final Integer seven = new Integer(7);
894	<	static final Integer eight = new Integer(8);
895	<	static final Integer nine = new Integer(9);
896	<	static final Integer m1  = new Integer(-1);
897	<	static final Integer m2  = new Integer(-2);
898	<	static final Integer m3  = new Integer(-3);
899	<	static final Integer m4 = new Integer(-4);
900	<	static final Integer m5 = new Integer(-5);
901	<	static final Integer m10 = new Integer(-10);
886	>	public static final Integer zero  = new Integer(0);
887	>	public static final Integer one   = new Integer(1);
888	>	public static final Integer two   = new Integer(2);
889	>	public static final Integer three = new Integer(3);
890	>	public static final Integer four  = new Integer(4);
891	>	public static final Integer five  = new Integer(5);
892	>	public static final Integer six   = new Integer(6);
893	>	public static final Integer seven = new Integer(7);
894	>	public static final Integer eight = new Integer(8);
895	>	public static final Integer nine  = new Integer(9);
896	>	public static final Integer m1  = new Integer(-1);
897	>	public static final Integer m2  = new Integer(-2);
898	>	public static final Integer m3  = new Integer(-3);
899	>	public static final Integer m4  = new Integer(-4);
900	>	public static final Integer m5  = new Integer(-5);
901	>	public static final Integer m6  = new Integer(-6);
902	>	public static final Integer m10 = new Integer(-10);
903	>
904	>	/**
905	>	* Runs Runnable r with a security policy that permits precisely
906	>	* the specified permissions.  If there is no current security
907	>	* manager, the runnable is run twice, both with and without a
908	>	* security manager.  We require that any security manager permit
909	>	* getPolicy/setPolicy.
910	>	*/
911	>	public void runWithPermissions(Runnable r, Permission... permissions) {
912	>	SecurityManager sm = System.getSecurityManager();
913	>	if (sm == null) {
914	>	r.run();
915	>	}
916	>	runWithSecurityManagerWithPermissions(r, permissions);
917	>	}
918	>
919	>	/**
920	>	* Runs Runnable r with a security policy that permits precisely
921	>	* the specified permissions.  If there is no current security
922	>	* manager, a temporary one is set for the duration of the
923	>	* Runnable.  We require that any security manager permit
924	>	* getPolicy/setPolicy.
925	>	*/
926	>	public void runWithSecurityManagerWithPermissions(Runnable r,
927	>	Permission... permissions) {
928	>	SecurityManager sm = System.getSecurityManager();
929	>	if (sm == null) {
930	>	Policy savedPolicy = Policy.getPolicy();
931	>	try {
932	>	Policy.setPolicy(permissivePolicy());
933	>	System.setSecurityManager(new SecurityManager());
934	>	runWithSecurityManagerWithPermissions(r, permissions);
935	>	} finally {
936	>	System.setSecurityManager(null);
937	>	Policy.setPolicy(savedPolicy);
938	>	}
939	>	} else {
940	>	Policy savedPolicy = Policy.getPolicy();
941	>	AdjustablePolicy policy = new AdjustablePolicy(permissions);
942	>	Policy.setPolicy(policy);
943	>
944	>	try {
945	>	r.run();
946	>	} finally {
947	>	policy.addPermission(new SecurityPermission("setPolicy"));
948	>	Policy.setPolicy(savedPolicy);
949	>	}
950	>	}
951	>	}
952
953	+	/**
954	+	* Runs a runnable without any permissions.
955	+	*/
956	+	public void runWithoutPermissions(Runnable r) {
957	+	runWithPermissions(r);
958	+	}
959
960		/**
961		* A security policy where new permissions can be dynamically added
962		* or all cleared.
963		*/
964	<	static class AdjustablePolicy extends java.security.Policy {
964	>	public static class AdjustablePolicy extends java.security.Policy {
965		Permissions perms = new Permissions();
966	<	AdjustablePolicy() { }
966	>	AdjustablePolicy(Permission... permissions) {
967	>	for (Permission permission : permissions)
968	>	perms.add(permission);
969	>	}
970		void addPermission(Permission perm) { perms.add(perm); }
971		void clearPermissions() { perms = new Permissions(); }
972	<	public PermissionCollection getPermissions(CodeSource cs) {
973	<	return perms;
974	<	}
975	<	public PermissionCollection getPermissions(ProtectionDomain pd) {
976	<	return perms;
977	<	}
978	<	public boolean implies(ProtectionDomain pd, Permission p) {
979	<	return perms.implies(p);
980	<	}
981	<	public void refresh() {}
972	>	public PermissionCollection getPermissions(CodeSource cs) {
973	>	return perms;
974	>	}
975	>	public PermissionCollection getPermissions(ProtectionDomain pd) {
976	>	return perms;
977	>	}
978	>	public boolean implies(ProtectionDomain pd, Permission p) {
979	>	return perms.implies(p);
980	>	}
981	>	public void refresh() {}
982	>	public String toString() {
983	>	List<Permission> ps = new ArrayList<Permission>();
984	>	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
985	>	ps.add(e.nextElement());
986	>	return "AdjustablePolicy with permissions " + ps;
987	>	}
988		}
989
990	+	/**
991	+	* Returns a policy containing all the permissions we ever need.
992	+	*/
993	+	public static Policy permissivePolicy() {
994	+	return new AdjustablePolicy
995	+	// Permissions j.u.c. needs directly
996	+	(new RuntimePermission("modifyThread"),
997	+	new RuntimePermission("getClassLoader"),
998	+	new RuntimePermission("setContextClassLoader"),
999	+	// Permissions needed to change permissions!
1000	+	new SecurityPermission("getPolicy"),
1001	+	new SecurityPermission("setPolicy"),
1002	+	new RuntimePermission("setSecurityManager"),
1003	+	// Permissions needed by the junit test harness
1004	+	new RuntimePermission("accessDeclaredMembers"),
1005	+	new PropertyPermission("*", "read"),
1006	+	new java.io.FilePermission("<<ALL FILES>>", "read"));
1007	+	}
1008
1009	<	// Some convenient Runnable classes
1009	>	/**
1010	>	* Sleeps until the given time has elapsed.
1011	>	* Throws AssertionFailedError if interrupted.
1012	>	*/
1013	>	void sleep(long millis) {
1014	>	try {
1015	>	delay(millis);
1016	>	} catch (InterruptedException fail) {
1017	>	AssertionFailedError afe =
1018	>	new AssertionFailedError("Unexpected InterruptedException");
1019	>	afe.initCause(fail);
1020	>	throw afe;
1021	>	}
1022	>	}
1023
1024	<	static class NoOpRunnable implements Runnable {
1025	<	public void run() {}
1024	>	/**
1025	>	* Spin-waits up to the specified number of milliseconds for the given
1026	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1027	>	*/
1028	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1029	>	long startTime = System.nanoTime();
1030	>	for (;;) {
1031	>	Thread.State s = thread.getState();
1032	>	if (s == Thread.State.BLOCKED ||
1033	>	s == Thread.State.WAITING ||
1034	>	s == Thread.State.TIMED_WAITING)
1035	>	return;
1036	>	else if (s == Thread.State.TERMINATED)
1037	>	fail("Unexpected thread termination");
1038	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1039	>	threadAssertTrue(thread.isAlive());
1040	>	return;
1041	>	}
1042	>	Thread.yield();
1043	>	}
1044		}
1045
1046	<	static class NoOpCallable implements Callable {
1047	<	public Object call() { return Boolean.TRUE; }
1046	>	/**
1047	>	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
1048	>	* state: BLOCKED, WAITING, or TIMED_WAITING.
1049	>	*/
1050	>	void waitForThreadToEnterWaitState(Thread thread) {
1051	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
1052	>	}
1053	>
1054	>	/**
1055	>	* Returns the number of milliseconds since time given by
1056	>	* startNanoTime, which must have been previously returned from a
1057	>	* call to {@link System#nanoTime()}.
1058	>	*/
1059	>	static long millisElapsedSince(long startNanoTime) {
1060	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1061		}
1062
1063	<	static final String TEST_STRING = "a test string";
1063	>	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1064	>	//         long startTime = System.nanoTime();
1065	>	//         try {
1066	>	//             r.run();
1067	>	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1068	>	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1069	>	//             throw new AssertionFailedError("did not return promptly");
1070	>	//     }
1071	>
1072	>	//     void assertTerminatesPromptly(Runnable r) {
1073	>	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1074	>	//     }
1075
1076	<	static class StringTask implements Callable<String> {
1077	<	public String call() { return TEST_STRING; }
1076	>	/**
1077	>	* Checks that timed f.get() returns the expected value, and does not
1078	>	* wait for the timeout to elapse before returning.
1079	>	*/
1080	>	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1081	>	long startTime = System.nanoTime();
1082	>	try {
1083	>	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1084	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1085	>	if (millisElapsedSince(startTime) > timeoutMillis/2)
1086	>	throw new AssertionFailedError("timed get did not return promptly");
1087		}
1088
1089	<	static class NPETask implements Callable<String> {
1090	<	public String call() { throw new NullPointerException(); }
1089	>	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1090	>	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1091		}
1092
1093	<	static class CallableOne implements Callable<Integer> {
1094	<	public Integer call() { return one; }
1093	>	/**
1094	>	* Returns a new started daemon Thread running the given runnable.
1095	>	*/
1096	>	Thread newStartedThread(Runnable runnable) {
1097	>	Thread t = new Thread(runnable);
1098	>	t.setDaemon(true);
1099	>	t.start();
1100	>	return t;
1101		}
1102
1103	<	class ShortRunnable implements Runnable {
1104	<	public void run() {
1105	<	try {
1106	<	Thread.sleep(SHORT_DELAY_MS);
1107	<	}
1108	<	catch(Exception e) {
1109	<	threadUnexpectedException();
1103	>	/**
1104	>	* Waits for the specified time (in milliseconds) for the thread
1105	>	* to terminate (using {@link Thread#join(long)}), else interrupts
1106	>	* the thread (in the hope that it may terminate later) and fails.
1107	>	*/
1108	>	void awaitTermination(Thread t, long timeoutMillis) {
1109	>	try {
1110	>	t.join(timeoutMillis);
1111	>	} catch (InterruptedException fail) {
1112	>	threadUnexpectedException(fail);
1113	>	} finally {
1114	>	if (t.getState() != Thread.State.TERMINATED) {
1115	>	t.interrupt();
1116	>	fail("Test timed out");
1117		}
1118		}
1119		}
1120
1121	<	class ShortInterruptedRunnable implements Runnable {
1122	<	public void run() {
1121	>	/**
1122	>	* Waits for LONG_DELAY_MS milliseconds for the thread to
1123	>	* terminate (using {@link Thread#join(long)}), else interrupts
1124	>	* the thread (in the hope that it may terminate later) and fails.
1125	>	*/
1126	>	void awaitTermination(Thread t) {
1127	>	awaitTermination(t, LONG_DELAY_MS);
1128	>	}
1129	>
1130	>	// Some convenient Runnable classes
1131	>
1132	>	public abstract class CheckedRunnable implements Runnable {
1133	>	protected abstract void realRun() throws Throwable;
1134	>
1135	>	public final void run() {
1136		try {
1137	<	Thread.sleep(SHORT_DELAY_MS);
1138	<	threadShouldThrow();
1139	<	}
415	<	catch(InterruptedException success) {
1137	>	realRun();
1138	>	} catch (Throwable fail) {
1139	>	threadUnexpectedException(fail);
1140		}
1141		}
1142		}
1143
1144	<	class SmallRunnable implements Runnable {
1145	<	public void run() {
1144	>	public abstract class RunnableShouldThrow implements Runnable {
1145	>	protected abstract void realRun() throws Throwable;
1146	>
1147	>	final Class<?> exceptionClass;
1148	>
1149	>	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
1150	>	this.exceptionClass = exceptionClass;
1151	>	}
1152	>
1153	>	public final void run() {
1154		try {
1155	<	Thread.sleep(SMALL_DELAY_MS);
1156	<	}
1157	<	catch(Exception e) {
1158	<	threadUnexpectedException();
1155	>	realRun();
1156	>	threadShouldThrow(exceptionClass.getSimpleName());
1157	>	} catch (Throwable t) {
1158	>	if (! exceptionClass.isInstance(t))
1159	>	threadUnexpectedException(t);
1160		}
1161		}
1162		}
1163
1164	<	class SmallPossiblyInterruptedRunnable implements Runnable {
1165	<	public void run() {
1164	>	public abstract class ThreadShouldThrow extends Thread {
1165	>	protected abstract void realRun() throws Throwable;
1166	>
1167	>	final Class<?> exceptionClass;
1168	>
1169	>	<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) {
1170	>	this.exceptionClass = exceptionClass;
1171	>	}
1172	>
1173	>	public final void run() {
1174		try {
1175	<	Thread.sleep(SMALL_DELAY_MS);
1176	<	}
1177	<	catch(Exception e) {
1175	>	realRun();
1176	>	threadShouldThrow(exceptionClass.getSimpleName());
1177	>	} catch (Throwable t) {
1178	>	if (! exceptionClass.isInstance(t))
1179	>	threadUnexpectedException(t);
1180		}
1181		}
1182		}
1183
1184	<	class SmallCallable implements Callable {
1185	<	public Object call() {
1184	>	public abstract class CheckedInterruptedRunnable implements Runnable {
1185	>	protected abstract void realRun() throws Throwable;
1186	>
1187	>	public final void run() {
1188		try {
1189	<	Thread.sleep(SMALL_DELAY_MS);
1190	<	}
1191	<	catch(Exception e) {
1192	<	threadUnexpectedException();
1189	>	realRun();
1190	>	threadShouldThrow("InterruptedException");
1191	>	} catch (InterruptedException success) {
1192	>	threadAssertFalse(Thread.interrupted());
1193	>	} catch (Throwable fail) {
1194	>	threadUnexpectedException(fail);
1195		}
449	–	return Boolean.TRUE;
1196		}
1197		}
1198
1199	<	class SmallInterruptedRunnable implements Runnable {
1200	<	public void run() {
1199	>	public abstract class CheckedCallable<T> implements Callable<T> {
1200	>	protected abstract T realCall() throws Throwable;
1201	>
1202	>	public final T call() {
1203		try {
1204	<	Thread.sleep(SMALL_DELAY_MS);
1205	<	threadShouldThrow();
1206	<	}
1207	<	catch(InterruptedException success) {
1204	>	return realCall();
1205	>	} catch (Throwable fail) {
1206	>	threadUnexpectedException(fail);
1207	>	return null;
1208		}
1209		}
1210		}
1211
1212	+	public abstract class CheckedInterruptedCallable<T>
1213	+	implements Callable<T> {
1214	+	protected abstract T realCall() throws Throwable;
1215
1216	<	class MediumRunnable implements Runnable {
466	<	public void run() {
1216	>	public final T call() {
1217		try {
1218	<	Thread.sleep(MEDIUM_DELAY_MS);
1219	<	}
1220	<	catch(Exception e) {
1221	<	threadUnexpectedException();
1218	>	T result = realCall();
1219	>	threadShouldThrow("InterruptedException");
1220	>	return result;
1221	>	} catch (InterruptedException success) {
1222	>	threadAssertFalse(Thread.interrupted());
1223	>	} catch (Throwable fail) {
1224	>	threadUnexpectedException(fail);
1225		}
1226	+	return null;
1227		}
1228		}
1229
1230	<	class MediumInterruptedRunnable implements Runnable {
1231	<	public void run() {
1230	>	public static class NoOpRunnable implements Runnable {
1231	>	public void run() {}
1232	>	}
1233	>
1234	>	public static class NoOpCallable implements Callable {
1235	>	public Object call() { return Boolean.TRUE; }
1236	>	}
1237	>
1238	>	public static final String TEST_STRING = "a test string";
1239	>
1240	>	public static class StringTask implements Callable<String> {
1241	>	final String value;
1242	>	public StringTask() { this(TEST_STRING); }
1243	>	public StringTask(String value) { this.value = value; }
1244	>	public String call() { return value; }
1245	>	}
1246	>
1247	>	public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1248	>	return new CheckedCallable<String>() {
1249	>	protected String realCall() {
1250	>	try {
1251	>	latch.await();
1252	>	} catch (InterruptedException quittingTime) {}
1253	>	return TEST_STRING;
1254	>	}};
1255	>	}
1256	>
1257	>	public Runnable countDowner(final CountDownLatch latch) {
1258	>	return new CheckedRunnable() {
1259	>	public void realRun() throws InterruptedException {
1260	>	latch.countDown();
1261	>	}};
1262	>	}
1263	>
1264	>	public Runnable awaiter(final CountDownLatch latch) {
1265	>	return new CheckedRunnable() {
1266	>	public void realRun() throws InterruptedException {
1267	>	await(latch);
1268	>	}};
1269	>	}
1270	>
1271	>	public void await(CountDownLatch latch) {
1272	>	try {
1273	>	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1274	>	} catch (Throwable fail) {
1275	>	threadUnexpectedException(fail);
1276	>	}
1277	>	}
1278	>
1279	>	public void await(Semaphore semaphore) {
1280	>	try {
1281	>	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1282	>	} catch (Throwable fail) {
1283	>	threadUnexpectedException(fail);
1284	>	}
1285	>	}
1286	>
1287	>	//     /**
1288	>	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1289	>	//      */
1290	>	//     public void await(AtomicBoolean flag) {
1291	>	//         await(flag, LONG_DELAY_MS);
1292	>	//     }
1293	>
1294	>	//     /**
1295	>	//      * Spin-waits up to the specified timeout until flag becomes true.
1296	>	//      */
1297	>	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1298	>	//         long startTime = System.nanoTime();
1299	>	//         while (!flag.get()) {
1300	>	//             if (millisElapsedSince(startTime) > timeoutMillis)
1301	>	//                 throw new AssertionFailedError("timed out");
1302	>	//             Thread.yield();
1303	>	//         }
1304	>	//     }
1305	>
1306	>	public static class NPETask implements Callable<String> {
1307	>	public String call() { throw new NullPointerException(); }
1308	>	}
1309	>
1310	>	public static class CallableOne implements Callable<Integer> {
1311	>	public Integer call() { return one; }
1312	>	}
1313	>
1314	>	public class ShortRunnable extends CheckedRunnable {
1315	>	protected void realRun() throws Throwable {
1316	>	delay(SHORT_DELAY_MS);
1317	>	}
1318	>	}
1319	>
1320	>	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1321	>	protected void realRun() throws InterruptedException {
1322	>	delay(SHORT_DELAY_MS);
1323	>	}
1324	>	}
1325	>
1326	>	public class SmallRunnable extends CheckedRunnable {
1327	>	protected void realRun() throws Throwable {
1328	>	delay(SMALL_DELAY_MS);
1329	>	}
1330	>	}
1331	>
1332	>	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1333	>	protected void realRun() {
1334		try {
1335	<	Thread.sleep(MEDIUM_DELAY_MS);
1336	<	threadShouldThrow();
481	<	}
482	<	catch(InterruptedException success) {
483	<	}
1335	>	delay(SMALL_DELAY_MS);
1336	>	} catch (InterruptedException ok) {}
1337		}
1338		}
1339
1340	<	class MediumPossiblyInterruptedRunnable implements Runnable {
1341	<	public void run() {
1340	>	public class SmallCallable extends CheckedCallable {
1341	>	protected Object realCall() throws InterruptedException {
1342	>	delay(SMALL_DELAY_MS);
1343	>	return Boolean.TRUE;
1344	>	}
1345	>	}
1346	>
1347	>	public class MediumRunnable extends CheckedRunnable {
1348	>	protected void realRun() throws Throwable {
1349	>	delay(MEDIUM_DELAY_MS);
1350	>	}
1351	>	}
1352	>
1353	>	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1354	>	protected void realRun() throws InterruptedException {
1355	>	delay(MEDIUM_DELAY_MS);
1356	>	}
1357	>	}
1358	>
1359	>	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1360	>	return new CheckedRunnable() {
1361	>	protected void realRun() {
1362	>	try {
1363	>	delay(timeoutMillis);
1364	>	} catch (InterruptedException ok) {}
1365	>	}};
1366	>	}
1367	>
1368	>	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1369	>	protected void realRun() {
1370		try {
1371	<	Thread.sleep(MEDIUM_DELAY_MS);
1372	<	}
492	<	catch(InterruptedException success) {
493	<	}
1371	>	delay(MEDIUM_DELAY_MS);
1372	>	} catch (InterruptedException ok) {}
1373		}
1374		}
1375
1376	<	class LongPossiblyInterruptedRunnable implements Runnable {
1377	<	public void run() {
1376	>	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1377	>	protected void realRun() {
1378		try {
1379	<	Thread.sleep(LONG_DELAY_MS);
1380	<	}
502	<	catch(InterruptedException success) {
503	<	}
1379	>	delay(LONG_DELAY_MS);
1380	>	} catch (InterruptedException ok) {}
1381		}
1382		}
1383
1384		/**
1385		* For use as ThreadFactory in constructors
1386		*/
1387	<	static class SimpleThreadFactory implements ThreadFactory{
1388	<	public Thread newThread(Runnable r){
1387	>	public static class SimpleThreadFactory implements ThreadFactory {
1388	>	public Thread newThread(Runnable r) {
1389		return new Thread(r);
1390		}
1391		}
1392
1393	<	static class TrackedShortRunnable implements Runnable {
1394	<	volatile boolean done = false;
1393	>	public interface TrackedRunnable extends Runnable {
1394	>	boolean isDone();
1395	>	}
1396	>
1397	>	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1398	>	return new TrackedRunnable() {
1399	>	private volatile boolean done = false;
1400	>	public boolean isDone() { return done; }
1401	>	public void run() {
1402	>	try {
1403	>	delay(timeoutMillis);
1404	>	done = true;
1405	>	} catch (InterruptedException ok) {}
1406	>	}
1407	>	};
1408	>	}
1409	>
1410	>	public static class TrackedShortRunnable implements Runnable {
1411	>	public volatile boolean done = false;
1412		public void run() {
1413		try {
1414	<	Thread.sleep(SMALL_DELAY_MS);
1414	>	delay(SHORT_DELAY_MS);
1415		done = true;
1416	<	} catch(Exception e){
523	<	}
1416	>	} catch (InterruptedException ok) {}
1417		}
1418		}
1419
1420	<	static class TrackedMediumRunnable implements Runnable {
1421	<	volatile boolean done = false;
1420	>	public static class TrackedSmallRunnable implements Runnable {
1421	>	public volatile boolean done = false;
1422		public void run() {
1423		try {
1424	<	Thread.sleep(MEDIUM_DELAY_MS);
1424	>	delay(SMALL_DELAY_MS);
1425		done = true;
1426	<	} catch(Exception e){
534	<	}
1426	>	} catch (InterruptedException ok) {}
1427		}
1428		}
1429
1430	<	static class TrackedLongRunnable implements Runnable {
1431	<	volatile boolean done = false;
1430	>	public static class TrackedMediumRunnable implements Runnable {
1431	>	public volatile boolean done = false;
1432		public void run() {
1433		try {
1434	<	Thread.sleep(LONG_DELAY_MS);
1434	>	delay(MEDIUM_DELAY_MS);
1435		done = true;
1436	<	} catch(Exception e){
545	<	}
1436	>	} catch (InterruptedException ok) {}
1437		}
1438		}
1439
1440	<	static class TrackedNoOpRunnable implements Runnable {
1441	<	volatile boolean done = false;
1440	>	public static class TrackedLongRunnable implements Runnable {
1441	>	public volatile boolean done = false;
1442	>	public void run() {
1443	>	try {
1444	>	delay(LONG_DELAY_MS);
1445	>	done = true;
1446	>	} catch (InterruptedException ok) {}
1447	>	}
1448	>	}
1449	>
1450	>	public static class TrackedNoOpRunnable implements Runnable {
1451	>	public volatile boolean done = false;
1452		public void run() {
1453		done = true;
1454		}
1455		}
1456
1457	<	static class TrackedCallable implements Callable {
1458	<	volatile boolean done = false;
1457	>	public static class TrackedCallable implements Callable {
1458	>	public volatile boolean done = false;
1459		public Object call() {
1460		try {
1461	<	Thread.sleep(SMALL_DELAY_MS);
1461	>	delay(SMALL_DELAY_MS);
1462		done = true;
1463	<	} catch(Exception e){
563	<	}
1463	>	} catch (InterruptedException ok) {}
1464		return Boolean.TRUE;
1465		}
1466		}
1467
1468	+	/**
1469	+	* Analog of CheckedRunnable for RecursiveAction
1470	+	*/
1471	+	public abstract class CheckedRecursiveAction extends RecursiveAction {
1472	+	protected abstract void realCompute() throws Throwable;
1473	+
1474	+	@Override protected final void compute() {
1475	+	try {
1476	+	realCompute();
1477	+	} catch (Throwable fail) {
1478	+	threadUnexpectedException(fail);
1479	+	}
1480	+	}
1481	+	}
1482	+
1483	+	/**
1484	+	* Analog of CheckedCallable for RecursiveTask
1485	+	*/
1486	+	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1487	+	protected abstract T realCompute() throws Throwable;
1488	+
1489	+	@Override protected final T compute() {
1490	+	try {
1491	+	return realCompute();
1492	+	} catch (Throwable fail) {
1493	+	threadUnexpectedException(fail);
1494	+	return null;
1495	+	}
1496	+	}
1497	+	}
1498
1499		/**
1500		* For use as RejectedExecutionHandler in constructors
1501		*/
1502	<	static class NoOpREHandler implements RejectedExecutionHandler{
1503	<	public void rejectedExecution(Runnable r, ThreadPoolExecutor executor){}
1502	>	public static class NoOpREHandler implements RejectedExecutionHandler {
1503	>	public void rejectedExecution(Runnable r,
1504	>	ThreadPoolExecutor executor) {}
1505	>	}
1506	>
1507	>	/**
1508	>	* A CyclicBarrier that uses timed await and fails with
1509	>	* AssertionFailedErrors instead of throwing checked exceptions.
1510	>	*/
1511	>	public class CheckedBarrier extends CyclicBarrier {
1512	>	public CheckedBarrier(int parties) { super(parties); }
1513	>
1514	>	public int await() {
1515	>	try {
1516	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1517	>	} catch (TimeoutException timedOut) {
1518	>	throw new AssertionFailedError("timed out");
1519	>	} catch (Exception fail) {
1520	>	AssertionFailedError afe =
1521	>	new AssertionFailedError("Unexpected exception: " + fail);
1522	>	afe.initCause(fail);
1523	>	throw afe;
1524	>	}
1525	>	}
1526	>	}
1527	>
1528	>	void checkEmpty(BlockingQueue q) {
1529	>	try {
1530	>	assertTrue(q.isEmpty());
1531	>	assertEquals(0, q.size());
1532	>	assertNull(q.peek());
1533	>	assertNull(q.poll());
1534	>	assertNull(q.poll(0, MILLISECONDS));
1535	>	assertEquals(q.toString(), "[]");
1536	>	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1537	>	assertFalse(q.iterator().hasNext());
1538	>	try {
1539	>	q.element();
1540	>	shouldThrow();
1541	>	} catch (NoSuchElementException success) {}
1542	>	try {
1543	>	q.iterator().next();
1544	>	shouldThrow();
1545	>	} catch (NoSuchElementException success) {}
1546	>	try {
1547	>	q.remove();
1548	>	shouldThrow();
1549	>	} catch (NoSuchElementException success) {}
1550	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1551	>	}
1552	>
1553	>	void assertSerialEquals(Object x, Object y) {
1554	>	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1555	>	}
1556	>
1557	>	void assertNotSerialEquals(Object x, Object y) {
1558	>	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1559	>	}
1560	>
1561	>	byte[] serialBytes(Object o) {
1562	>	try {
1563	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1564	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1565	>	oos.writeObject(o);
1566	>	oos.flush();
1567	>	oos.close();
1568	>	return bos.toByteArray();
1569	>	} catch (Throwable fail) {
1570	>	threadUnexpectedException(fail);
1571	>	return new byte[0];
1572	>	}
1573		}
1574
1575	+	@SuppressWarnings("unchecked")
1576	+	<T> T serialClone(T o) {
1577	+	try {
1578	+	ObjectInputStream ois = new ObjectInputStream
1579	+	(new ByteArrayInputStream(serialBytes(o)));
1580	+	T clone = (T) ois.readObject();
1581	+	assertSame(o.getClass(), clone.getClass());
1582	+	return clone;
1583	+	} catch (Throwable fail) {
1584	+	threadUnexpectedException(fail);
1585	+	return null;
1586	+	}
1587	+	}
1588
1589	+	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1590	+	Runnable... throwingActions) {
1591	+	for (Runnable throwingAction : throwingActions) {
1592	+	boolean threw = false;
1593	+	try { throwingAction.run(); }
1594	+	catch (Throwable t) {
1595	+	threw = true;
1596	+	if (!expectedExceptionClass.isInstance(t)) {
1597	+	AssertionFailedError afe =
1598	+	new AssertionFailedError
1599	+	("Expected " + expectedExceptionClass.getName() +
1600	+	", got " + t.getClass().getName());
1601	+	afe.initCause(t);
1602	+	threadUnexpectedException(afe);
1603	+	}
1604	+	}
1605	+	if (!threw)
1606	+	shouldThrow(expectedExceptionClass.getName());
1607	+	}
1608	+	}
1609	+
1610	+	public void assertIteratorExhausted(Iterator<?> it) {
1611	+	try {
1612	+	it.next();
1613	+	shouldThrow();
1614	+	} catch (NoSuchElementException success) {}
1615	+	assertFalse(it.hasNext());
1616	+	}
1617		}

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