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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.6 by dl, Sun Oct 5 23:00:40 2003 UTC vs.
Revision 1.150 by jsr166, Sat Oct 3 19:08:13 2015 UTC

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

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