ViewVC Help

View File | Revision Log | Show Annotations | Download File | Root Listing

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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.1 by dl, Sun Sep 14 20:42:40 2003 UTC vs.
Revision 1.177 by jsr166, Mon Oct 12 23:52:44 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.*;
11	<	import java.util.concurrent.*;
12	<	import java.io.*;
13	<
9	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
10	>	import static java.util.concurrent.TimeUnit.MINUTES;
11	>	import static java.util.concurrent.TimeUnit.NANOSECONDS;
12	>
13	>	import java.io.ByteArrayInputStream;
14	>	import java.io.ByteArrayOutputStream;
15	>	import java.io.ObjectInputStream;
16	>	import java.io.ObjectOutputStream;
17	>	import java.lang.management.ManagementFactory;
18	>	import java.lang.management.ThreadInfo;
19	>	import java.lang.management.ThreadMXBean;
20	>	import java.lang.reflect.Constructor;
21	>	import java.lang.reflect.Method;
22	>	import java.lang.reflect.Modifier;
23	>	import java.nio.file.Files;
24	>	import java.nio.file.Paths;
25	>	import java.security.CodeSource;
26	>	import java.security.Permission;
27	>	import java.security.PermissionCollection;
28	>	import java.security.Permissions;
29	>	import java.security.Policy;
30	>	import java.security.ProtectionDomain;
31	>	import java.security.SecurityPermission;
32	>	import java.util.ArrayList;
33	>	import java.util.Arrays;
34	>	import java.util.Date;
35	>	import java.util.Enumeration;
36	>	import java.util.Iterator;
37	>	import java.util.List;
38	>	import java.util.NoSuchElementException;
39	>	import java.util.PropertyPermission;
40	>	import java.util.concurrent.BlockingQueue;
41	>	import java.util.concurrent.Callable;
42	>	import java.util.concurrent.CountDownLatch;
43	>	import java.util.concurrent.CyclicBarrier;
44	>	import java.util.concurrent.ExecutionException;
45	>	import java.util.concurrent.Executors;
46	>	import java.util.concurrent.ExecutorService;
47	>	import java.util.concurrent.ForkJoinPool;
48	>	import java.util.concurrent.Future;
49	>	import java.util.concurrent.RecursiveAction;
50	>	import java.util.concurrent.RecursiveTask;
51	>	import java.util.concurrent.RejectedExecutionHandler;
52	>	import java.util.concurrent.Semaphore;
53	>	import java.util.concurrent.ThreadFactory;
54	>	import java.util.concurrent.ThreadPoolExecutor;
55	>	import java.util.concurrent.TimeoutException;
56	>	import java.util.concurrent.atomic.AtomicReference;
57	>	import java.util.regex.Matcher;
58	>	import java.util.regex.Pattern;
59	>
60	>	import junit.framework.AssertionFailedError;
61	>	import junit.framework.Test;
62	>	import junit.framework.TestCase;
63	>	import junit.framework.TestResult;
64	>	import junit.framework.TestSuite;
65
66		/**
67	<	* Base class for JSR166 Junit TCK tests.  Defines some constants and
68	<	* utility methods, as well as a simple framework for helping to make
69	<	* sure that assertions failing in generated threads cause the
70	<	* associated test that generated them to itself fail (which JUnit doe
71	<	* not otherwise arrange).  The rules for creating such tests are:
67	>	* Base class for JSR166 Junit TCK tests.  Defines some constants,
68	>	* utility methods and classes, as well as a simple framework for
69	>	* helping to make sure that assertions failing in generated threads
70	>	* cause the associated test that generated them to itself fail (which
71	>	* JUnit does not otherwise arrange).  The rules for creating such
72	>	* tests are:
73		*
74		* <ol>
75		*
76	<	* <li> All assertions in code running in generated threads must use
77	<	* the forms {@link threadFail} , {@link threadAssertTrue} {@link
78	<	* threadAssertEquals}, or {@link threadAssertNull}, (not
79	<	* <tt>fail</tt>, <tt>assertTrue</tt>, etc.) It is OK (but not
76	>	* <li>All assertions in code running in generated threads must use
77	>	* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
78	>	* #threadAssertEquals}, or {@link #threadAssertNull}, (not
79	>	* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
80		* particularly recommended) for other code to use these forms too.
81		* Only the most typically used JUnit assertion methods are defined
82	<	* this way, but enough to live with.</li>
82	>	* this way, but enough to live with.
83		*
84	<	* <li> If you override {@link setUp} or {@link tearDown}, make sure
85	<	* to invoke <tt>super.setUp</tt> and <tt>super.tearDown</tt> within
84	>	* <li>If you override {@link #setUp} or {@link #tearDown}, make sure
85	>	* to invoke {@code super.setUp} and {@code super.tearDown} within
86		* them. These methods are used to clear and check for thread
87	<	* assertion failures.</li>
87	>	* assertion failures.
88		*
89	<	* <li>All delays and timeouts must use one of the constants {@link
90	<	* SHORT_DELAY_MS}, {@link SMALL_DELAY_MS}, {@link MEDIUM_DELAY_MS},
91	<	* {@link LONG_DELAY_MS}. The idea here is that a SHORT is always
92	<	* discriminatable from zero time, and always allows enough time for
93	<	* the small amounts of computation (creating a thread, calling a few
89	>	* <li>All delays and timeouts must use one of the constants {@code
90	>	* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
91	>	* {@code LONG_DELAY_MS}. The idea here is that a SHORT is always
92	>	* discriminable from zero time, and always allows enough time for the
93	>	* small amounts of computation (creating a thread, calling a few
94		* methods, etc) needed to reach a timeout point. Similarly, a SMALL
95		* is always discriminable as larger than SHORT and smaller than
96		* MEDIUM.  And so on. These constants are set to conservative values,
97	<	* (100, 500, 1000, 5000 MS) but even so, if there is ever any doubt,
98	<	* they can all be increased in one spot to rerun tests on slower
99	<	* platforms</li>
100	<	*
101	<	* <li> All threads generated must be joined inside each test case
102	<	* method (or <tt>fail</tt> to do so) before returning from the
103	<	* method. The {@link joinPool} method can be used to do this when
51	<	* using Executors.</li>
97	>	* but even so, if there is ever any doubt, they can all be increased
98	>	* in one spot to rerun tests on slower platforms.
99	>	*
100	>	* <li>All threads generated must be joined inside each test case
101	>	* method (or {@code fail} to do so) before returning from the
102	>	* method. The {@code joinPool} method can be used to do this when
103	>	* using Executors.
104		*
105		* </ol>
106	+	*
107	+	* <p><b>Other notes</b>
108	+	* <ul>
109	+	*
110	+	* <li>Usually, there is one testcase method per JSR166 method
111	+	* covering "normal" operation, and then as many exception-testing
112	+	* methods as there are exceptions the method can throw. Sometimes
113	+	* there are multiple tests per JSR166 method when the different
114	+	* "normal" behaviors differ significantly. And sometimes testcases
115	+	* cover multiple methods when they cannot be tested in
116	+	* isolation.
117	+	*
118	+	* <li>The documentation style for testcases is to provide as javadoc
119	+	* a simple sentence or two describing the property that the testcase
120	+	* method purports to test. The javadocs do not say anything about how
121	+	* the property is tested. To find out, read the code.
122	+	*
123	+	* <li>These tests are "conformance tests", and do not attempt to
124	+	* test throughput, latency, scalability or other performance factors
125	+	* (see the separate "jtreg" tests for a set intended to check these
126	+	* for the most central aspects of functionality.) So, most tests use
127	+	* the smallest sensible numbers of threads, collection sizes, etc
128	+	* needed to check basic conformance.
129	+	*
130	+	* <li>The test classes currently do not declare inclusion in
131	+	* any particular package to simplify things for people integrating
132	+	* them in TCK test suites.
133	+	*
134	+	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
135	+	* runs all JSR166 unit tests.
136	+	*
137	+	* </ul>
138		*/
139		public class JSR166TestCase extends TestCase {
140	+	private static final boolean useSecurityManager =
141	+	Boolean.getBoolean("jsr166.useSecurityManager");
142	+
143	+	protected static final boolean expensiveTests =
144	+	Boolean.getBoolean("jsr166.expensiveTests");
145	+
146	+	/**
147	+	* If true, also run tests that are not part of the official tck
148	+	* because they test unspecified implementation details.
149	+	*/
150	+	protected static final boolean testImplementationDetails =
151	+	Boolean.getBoolean("jsr166.testImplementationDetails");
152	+
153	+	/**
154	+	* If true, report on stdout all "slow" tests, that is, ones that
155	+	* take more than profileThreshold milliseconds to execute.
156	+	*/
157	+	private static final boolean profileTests =
158	+	Boolean.getBoolean("jsr166.profileTests");
159	+
160	+	/**
161	+	* The number of milliseconds that tests are permitted for
162	+	* execution without being reported, when profileTests is set.
163	+	*/
164	+	private static final long profileThreshold =
165	+	Long.getLong("jsr166.profileThreshold", 100);
166	+
167	+	/**
168	+	* The number of repetitions per test (for tickling rare bugs).
169	+	*/
170	+	private static final int runsPerTest =
171	+	Integer.getInteger("jsr166.runsPerTest", 1);
172	+
173	+	/**
174	+	* The number of repetitions of the test suite (for finding leaks?).
175	+	*/
176	+	private static final int suiteRuns =
177	+	Integer.getInteger("jsr166.suiteRuns", 1);
178	+
179	+	public JSR166TestCase() { super(); }
180	+	public JSR166TestCase(String name) { super(name); }
181	+
182	+	/**
183	+	* A filter for tests to run, matching strings of the form
184	+	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
185	+	* Usefully combined with jsr166.runsPerTest.
186	+	*/
187	+	private static final Pattern methodFilter = methodFilter();
188	+
189	+	private static Pattern methodFilter() {
190	+	String regex = System.getProperty("jsr166.methodFilter");
191	+	return (regex == null) ? null : Pattern.compile(regex);
192	+	}
193	+
194	+	// Instrumentation to debug very rare, but very annoying hung test runs.
195	+	static volatile TestCase currentTestCase;
196	+	// static volatile int currentRun = 0;
197	+	static {
198	+	Runnable checkForWedgedTest = new Runnable() { public void run() {
199	+	// Avoid spurious reports with enormous runsPerTest.
200	+	// A single test case run should never take more than 1 second.
201	+	// But let's cap it at the high end too ...
202	+	final int timeoutMinutes =
203	+	Math.min(15, Math.max(runsPerTest / 60, 1));
204	+	for (TestCase lastTestCase = currentTestCase;;) {
205	+	try { MINUTES.sleep(timeoutMinutes); }
206	+	catch (InterruptedException unexpected) { break; }
207	+	if (lastTestCase == currentTestCase) {
208	+	System.err.printf(
209	+	"Looks like we're stuck running test: %s%n",
210	+	lastTestCase);
211	+	//                     System.err.printf(
212	+	//                         "Looks like we're stuck running test: %s (%d/%d)%n",
213	+	//                         lastTestCase, currentRun, runsPerTest);
214	+	//                     System.err.println("availableProcessors=" +
215	+	//                         Runtime.getRuntime().availableProcessors());
216	+	//                     System.err.printf("cpu model = %s%n", cpuModel());
217	+	dumpTestThreads();
218	+	// one stack dump is probably enough; more would be spam
219	+	break;
220	+	}
221	+	lastTestCase = currentTestCase;
222	+	}}};
223	+	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
224	+	thread.setDaemon(true);
225	+	thread.start();
226	+	}
227	+
228	+	//     public static String cpuModel() {
229	+	//         try {
230	+	//             Matcher matcher = Pattern.compile("model name\\s*: (.*)")
231	+	//                 .matcher(new String(
232	+	//                      Files.readAllBytes(Paths.get("/proc/cpuinfo")), "UTF-8"));
233	+	//             matcher.find();
234	+	//             return matcher.group(1);
235	+	//         } catch (Exception ex) { return null; }
236	+	//     }
237	+
238	+	public void runBare() throws Throwable {
239	+	currentTestCase = this;
240	+	if (methodFilter == null
241	+	|| methodFilter.matcher(toString()).find())
242	+	super.runBare();
243	+	}
244	+
245	+	protected void runTest() throws Throwable {
246	+	for (int i = 0; i < runsPerTest; i++) {
247	+	// currentRun = i;
248	+	if (profileTests)
249	+	runTestProfiled();
250	+	else
251	+	super.runTest();
252	+	}
253	+	}
254	+
255	+	protected void runTestProfiled() throws Throwable {
256	+	for (int i = 0; i < 2; i++) {
257	+	long startTime = System.nanoTime();
258	+	super.runTest();
259	+	long elapsedMillis = millisElapsedSince(startTime);
260	+	if (elapsedMillis < profileThreshold)
261	+	break;
262	+	// Never report first run of any test; treat it as a
263	+	// warmup run, notably to trigger all needed classloading,
264	+	if (i > 0)
265	+	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
266	+	}
267	+	}
268
269		/**
270	<	* Flag set true if any threadAssert methods fail
270	>	* Runs all JSR166 unit tests using junit.textui.TestRunner.
271		*/
272	<	protected volatile boolean threadFailed;
272	>	public static void main(String[] args) {
273	>	main(suite(), args);
274	>	}
275
276		/**
277	<	* Initialize test to indicat that no thread assertions have failed
277	>	* Runs all unit tests in the given test suite.
278	>	* Actual behavior influenced by jsr166.* system properties.
279		*/
280	<	public void setUp() {
281	<	threadFailed = false;
280	>	static void main(Test suite, String[] args) {
281	>	if (useSecurityManager) {
282	>	System.err.println("Setting a permissive security manager");
283	>	Policy.setPolicy(permissivePolicy());
284	>	System.setSecurityManager(new SecurityManager());
285	>	}
286	>	for (int i = 0; i < suiteRuns; i++) {
287	>	TestResult result = junit.textui.TestRunner.run(suite);
288	>	if (!result.wasSuccessful())
289	>	System.exit(1);
290	>	System.gc();
291	>	System.runFinalization();
292	>	}
293	>	}
294	>
295	>	public static TestSuite newTestSuite(Object... suiteOrClasses) {
296	>	TestSuite suite = new TestSuite();
297	>	for (Object suiteOrClass : suiteOrClasses) {
298	>	if (suiteOrClass instanceof TestSuite)
299	>	suite.addTest((TestSuite) suiteOrClass);
300	>	else if (suiteOrClass instanceof Class)
301	>	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
302	>	else
303	>	throw new ClassCastException("not a test suite or class");
304	>	}
305	>	return suite;
306	>	}
307	>
308	>	public static void addNamedTestClasses(TestSuite suite,
309	>	String... testClassNames) {
310	>	for (String testClassName : testClassNames) {
311	>	try {
312	>	Class<?> testClass = Class.forName(testClassName);
313	>	Method m = testClass.getDeclaredMethod("suite",
314	>	new Class<?>[0]);
315	>	suite.addTest(newTestSuite((Test)m.invoke(null)));
316	>	} catch (Exception e) {
317	>	throw new Error("Missing test class", e);
318	>	}
319	>	}
320	>	}
321	>
322	>	public static final double JAVA_CLASS_VERSION;
323	>	public static final String JAVA_SPECIFICATION_VERSION;
324	>	static {
325	>	try {
326	>	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
327	>	new java.security.PrivilegedAction<Double>() {
328	>	public Double run() {
329	>	return Double.valueOf(System.getProperty("java.class.version"));}});
330	>	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
331	>	new java.security.PrivilegedAction<String>() {
332	>	public String run() {
333	>	return System.getProperty("java.specification.version");}});
334	>	} catch (Throwable t) {
335	>	throw new Error(t);
336	>	}
337	>	}
338	>
339	>	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
340	>	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
341	>	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
342	>	public static boolean atLeastJava9() {
343	>	return JAVA_CLASS_VERSION >= 53.0
344	>	// As of 2015-09, java9 still uses 52.0 class file version
345	>	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?(9|[0-9][0-9])$");
346	>	}
347	>	public static boolean atLeastJava10() {
348	>	return JAVA_CLASS_VERSION >= 54.0
349	>	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?[0-9][0-9]$");
350	>	}
351	>
352	>	/**
353	>	* Collects all JSR166 unit tests as one suite.
354	>	*/
355	>	public static Test suite() {
356	>	// Java7+ test classes
357	>	TestSuite suite = newTestSuite(
358	>	ForkJoinPoolTest.suite(),
359	>	ForkJoinTaskTest.suite(),
360	>	RecursiveActionTest.suite(),
361	>	RecursiveTaskTest.suite(),
362	>	LinkedTransferQueueTest.suite(),
363	>	PhaserTest.suite(),
364	>	ThreadLocalRandomTest.suite(),
365	>	AbstractExecutorServiceTest.suite(),
366	>	AbstractQueueTest.suite(),
367	>	AbstractQueuedSynchronizerTest.suite(),
368	>	AbstractQueuedLongSynchronizerTest.suite(),
369	>	ArrayBlockingQueueTest.suite(),
370	>	ArrayDequeTest.suite(),
371	>	AtomicBooleanTest.suite(),
372	>	AtomicIntegerArrayTest.suite(),
373	>	AtomicIntegerFieldUpdaterTest.suite(),
374	>	AtomicIntegerTest.suite(),
375	>	AtomicLongArrayTest.suite(),
376	>	AtomicLongFieldUpdaterTest.suite(),
377	>	AtomicLongTest.suite(),
378	>	AtomicMarkableReferenceTest.suite(),
379	>	AtomicReferenceArrayTest.suite(),
380	>	AtomicReferenceFieldUpdaterTest.suite(),
381	>	AtomicReferenceTest.suite(),
382	>	AtomicStampedReferenceTest.suite(),
383	>	ConcurrentHashMapTest.suite(),
384	>	ConcurrentLinkedDequeTest.suite(),
385	>	ConcurrentLinkedQueueTest.suite(),
386	>	ConcurrentSkipListMapTest.suite(),
387	>	ConcurrentSkipListSubMapTest.suite(),
388	>	ConcurrentSkipListSetTest.suite(),
389	>	ConcurrentSkipListSubSetTest.suite(),
390	>	CopyOnWriteArrayListTest.suite(),
391	>	CopyOnWriteArraySetTest.suite(),
392	>	CountDownLatchTest.suite(),
393	>	CyclicBarrierTest.suite(),
394	>	DelayQueueTest.suite(),
395	>	EntryTest.suite(),
396	>	ExchangerTest.suite(),
397	>	ExecutorsTest.suite(),
398	>	ExecutorCompletionServiceTest.suite(),
399	>	FutureTaskTest.suite(),
400	>	LinkedBlockingDequeTest.suite(),
401	>	LinkedBlockingQueueTest.suite(),
402	>	LinkedListTest.suite(),
403	>	LockSupportTest.suite(),
404	>	PriorityBlockingQueueTest.suite(),
405	>	PriorityQueueTest.suite(),
406	>	ReentrantLockTest.suite(),
407	>	ReentrantReadWriteLockTest.suite(),
408	>	ScheduledExecutorTest.suite(),
409	>	ScheduledExecutorSubclassTest.suite(),
410	>	SemaphoreTest.suite(),
411	>	SynchronousQueueTest.suite(),
412	>	SystemTest.suite(),
413	>	ThreadLocalTest.suite(),
414	>	ThreadPoolExecutorTest.suite(),
415	>	ThreadPoolExecutorSubclassTest.suite(),
416	>	ThreadTest.suite(),
417	>	TimeUnitTest.suite(),
418	>	TreeMapTest.suite(),
419	>	TreeSetTest.suite(),
420	>	TreeSubMapTest.suite(),
421	>	TreeSubSetTest.suite());
422	>
423	>	// Java8+ test classes
424	>	if (atLeastJava8()) {
425	>	String[] java8TestClassNames = {
426	>	"Atomic8Test",
427	>	"CompletableFutureTest",
428	>	"ConcurrentHashMap8Test",
429	>	"CountedCompleterTest",
430	>	"DoubleAccumulatorTest",
431	>	"DoubleAdderTest",
432	>	"ForkJoinPool8Test",
433	>	"ForkJoinTask8Test",
434	>	"LongAccumulatorTest",
435	>	"LongAdderTest",
436	>	"SplittableRandomTest",
437	>	"StampedLockTest",
438	>	"SubmissionPublisherTest",
439	>	"ThreadLocalRandom8Test",
440	>	};
441	>	addNamedTestClasses(suite, java8TestClassNames);
442	>	}
443	>
444	>	// Java9+ test classes
445	>	if (atLeastJava9()) {
446	>	String[] java9TestClassNames = {
447	>	// Currently empty, but expecting varhandle tests
448	>	};
449	>	addNamedTestClasses(suite, java9TestClassNames);
450	>	}
451	>
452	>	return suite;
453	>	}
454	>
455	>	/** Returns list of junit-style test method names in given class. */
456	>	public static ArrayList<String> testMethodNames(Class<?> testClass) {
457	>	Method[] methods = testClass.getDeclaredMethods();
458	>	ArrayList<String> names = new ArrayList<String>(methods.length);
459	>	for (Method method : methods) {
460	>	if (method.getName().startsWith("test")
461	>	&& Modifier.isPublic(method.getModifiers())
462	>	// method.getParameterCount() requires jdk8+
463	>	&& method.getParameterTypes().length == 0) {
464	>	names.add(method.getName());
465	>	}
466	>	}
467	>	return names;
468	>	}
469	>
470	>	/**
471	>	* Returns junit-style testSuite for the given test class, but
472	>	* parameterized by passing extra data to each test.
473	>	*/
474	>	public static <ExtraData> Test parameterizedTestSuite
475	>	(Class<? extends JSR166TestCase> testClass,
476	>	Class<ExtraData> dataClass,
477	>	ExtraData data) {
478	>	try {
479	>	TestSuite suite = new TestSuite();
480	>	Constructor c =
481	>	testClass.getDeclaredConstructor(dataClass, String.class);
482	>	for (String methodName : testMethodNames(testClass))
483	>	suite.addTest((Test) c.newInstance(data, methodName));
484	>	return suite;
485	>	} catch (Exception e) {
486	>	throw new Error(e);
487	>	}
488	>	}
489	>
490	>	/**
491	>	* Returns junit-style testSuite for the jdk8 extension of the
492	>	* given test class, but parameterized by passing extra data to
493	>	* each test.  Uses reflection to allow compilation in jdk7.
494	>	*/
495	>	public static <ExtraData> Test jdk8ParameterizedTestSuite
496	>	(Class<? extends JSR166TestCase> testClass,
497	>	Class<ExtraData> dataClass,
498	>	ExtraData data) {
499	>	if (atLeastJava8()) {
500	>	String name = testClass.getName();
501	>	String name8 = name.replaceAll("Test$", "8Test");
502	>	if (name.equals(name8)) throw new Error(name);
503	>	try {
504	>	return (Test)
505	>	Class.forName(name8)
506	>	.getMethod("testSuite", new Class[] { dataClass })
507	>	.invoke(null, data);
508	>	} catch (Exception e) {
509	>	throw new Error(e);
510	>	}
511	>	} else {
512	>	return new TestSuite();
513	>	}
514	>	}
515	>
516	>	// Delays for timing-dependent tests, in milliseconds.
517	>
518	>	public static long SHORT_DELAY_MS;
519	>	public static long SMALL_DELAY_MS;
520	>	public static long MEDIUM_DELAY_MS;
521	>	public static long LONG_DELAY_MS;
522	>
523	>	/**
524	>	* Returns the shortest timed delay. This could
525	>	* be reimplemented to use for example a Property.
526	>	*/
527	>	protected long getShortDelay() {
528	>	return 50;
529	>	}
530	>
531	>	/**
532	>	* Sets delays as multiples of SHORT_DELAY.
533	>	*/
534	>	protected void setDelays() {
535	>	SHORT_DELAY_MS = getShortDelay();
536	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
537	>	MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
538	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
539	>	}
540	>
541	>	/**
542	>	* Returns a timeout in milliseconds to be used in tests that
543	>	* verify that operations block or time out.
544	>	*/
545	>	long timeoutMillis() {
546	>	return SHORT_DELAY_MS / 4;
547	>	}
548	>
549	>	/**
550	>	* Returns a new Date instance representing a time at least
551	>	* delayMillis milliseconds in the future.
552	>	*/
553	>	Date delayedDate(long delayMillis) {
554	>	// Add 1 because currentTimeMillis is known to round into the past.
555	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
556	>	}
557	>
558	>	/**
559	>	* The first exception encountered if any threadAssertXXX method fails.
560	>	*/
561	>	private final AtomicReference<Throwable> threadFailure
562	>	= new AtomicReference<Throwable>(null);
563	>
564	>	/**
565	>	* Records an exception so that it can be rethrown later in the test
566	>	* harness thread, triggering a test case failure.  Only the first
567	>	* failure is recorded; subsequent calls to this method from within
568	>	* the same test have no effect.
569	>	*/
570	>	public void threadRecordFailure(Throwable t) {
571	>	System.err.println(t);
572	>	dumpTestThreads();
573	>	threadFailure.compareAndSet(null, t);
574	>	}
575	>
576	>	public void setUp() {
577	>	setDelays();
578	>	}
579	>
580	>	void tearDownFail(String format, Object... args) {
581	>	String msg = toString() + ": " + String.format(format, args);
582	>	System.err.println(msg);
583	>	dumpTestThreads();
584	>	throw new AssertionFailedError(msg);
585	>	}
586	>
587	>	/**
588	>	* Extra checks that get done for all test cases.
589	>	*
590	>	* Triggers test case failure if any thread assertions have failed,
591	>	* by rethrowing, in the test harness thread, any exception recorded
592	>	* earlier by threadRecordFailure.
593	>	*
594	>	* Triggers test case failure if interrupt status is set in the main thread.
595	>	*/
596	>	public void tearDown() throws Exception {
597	>	Throwable t = threadFailure.getAndSet(null);
598	>	if (t != null) {
599	>	if (t instanceof Error)
600	>	throw (Error) t;
601	>	else if (t instanceof RuntimeException)
602	>	throw (RuntimeException) t;
603	>	else if (t instanceof Exception)
604	>	throw (Exception) t;
605	>	else {
606	>	AssertionFailedError afe =
607	>	new AssertionFailedError(t.toString());
608	>	afe.initCause(t);
609	>	throw afe;
610	>	}
611	>	}
612	>
613	>	if (Thread.interrupted())
614	>	tearDownFail("interrupt status set in main thread");
615	>
616	>	checkForkJoinPoolThreadLeaks();
617		}
618
619		/**
620	<	* Trigger test case failure if any thread assertions have failed
620	>	* Finds missing PoolCleaners
621		*/
622	<	public void tearDown() {
623	<	assertFalse(threadFailed);
622	>	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
623	>	Thread[] survivors = new Thread[7];
624	>	int count = Thread.enumerate(survivors);
625	>	for (int i = 0; i < count; i++) {
626	>	Thread thread = survivors[i];
627	>	String name = thread.getName();
628	>	if (name.startsWith("ForkJoinPool-")) {
629	>	// give thread some time to terminate
630	>	thread.join(LONG_DELAY_MS);
631	>	if (thread.isAlive())
632	>	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
633	>	thread);
634	>	}
635	>	}
636	>
637	>	if (!ForkJoinPool.commonPool()
638	>	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
639	>	tearDownFail("ForkJoin common pool thread stuck");
640		}
641
642	+	/**
643	+	* Just like fail(reason), but additionally recording (using
644	+	* threadRecordFailure) any AssertionFailedError thrown, so that
645	+	* the current testcase will fail.
646	+	*/
647		public void threadFail(String reason) {
648	<	threadFailed = true;
649	<	fail(reason);
648	>	try {
649	>	fail(reason);
650	>	} catch (AssertionFailedError t) {
651	>	threadRecordFailure(t);
652	>	throw t;
653	>	}
654		}
655
656	+	/**
657	+	* Just like assertTrue(b), but additionally recording (using
658	+	* threadRecordFailure) any AssertionFailedError thrown, so that
659	+	* the current testcase will fail.
660	+	*/
661		public void threadAssertTrue(boolean b) {
662	<	if (!b) {
83	<	threadFailed = true;
662	>	try {
663		assertTrue(b);
664	+	} catch (AssertionFailedError t) {
665	+	threadRecordFailure(t);
666	+	throw t;
667		}
668		}
669	+
670	+	/**
671	+	* Just like assertFalse(b), but additionally recording (using
672	+	* threadRecordFailure) any AssertionFailedError thrown, so that
673	+	* the current testcase will fail.
674	+	*/
675		public void threadAssertFalse(boolean b) {
676	<	if (b) {
89	<	threadFailed = true;
676	>	try {
677		assertFalse(b);
678	+	} catch (AssertionFailedError t) {
679	+	threadRecordFailure(t);
680	+	throw t;
681		}
682		}
683	+
684	+	/**
685	+	* Just like assertNull(x), but additionally recording (using
686	+	* threadRecordFailure) any AssertionFailedError thrown, so that
687	+	* the current testcase will fail.
688	+	*/
689		public void threadAssertNull(Object x) {
690	<	if (x != null) {
95	<	threadFailed = true;
690	>	try {
691		assertNull(x);
692	+	} catch (AssertionFailedError t) {
693	+	threadRecordFailure(t);
694	+	throw t;
695		}
696		}
697	+
698	+	/**
699	+	* Just like assertEquals(x, y), but additionally recording (using
700	+	* threadRecordFailure) any AssertionFailedError thrown, so that
701	+	* the current testcase will fail.
702	+	*/
703		public void threadAssertEquals(long x, long y) {
704	<	if (x != y) {
101	<	threadFailed = true;
704	>	try {
705		assertEquals(x, y);
706	+	} catch (AssertionFailedError t) {
707	+	threadRecordFailure(t);
708	+	throw t;
709		}
710		}
711	+
712	+	/**
713	+	* Just like assertEquals(x, y), but additionally recording (using
714	+	* threadRecordFailure) any AssertionFailedError thrown, so that
715	+	* the current testcase will fail.
716	+	*/
717		public void threadAssertEquals(Object x, Object y) {
718	<	if (x != y && (x == null || !x.equals(y))) {
107	<	threadFailed = true;
718	>	try {
719		assertEquals(x, y);
720	+	} catch (AssertionFailedError fail) {
721	+	threadRecordFailure(fail);
722	+	throw fail;
723	+	} catch (Throwable fail) {
724	+	threadUnexpectedException(fail);
725		}
726		}
727
728		/**
729	<	* Wait out termination of a thread pool or fail doing so
729	>	* Just like assertSame(x, y), but additionally recording (using
730	>	* threadRecordFailure) any AssertionFailedError thrown, so that
731	>	* the current testcase will fail.
732		*/
733	<	public void joinPool(ExecutorService exec) {
733	>	public void threadAssertSame(Object x, Object y) {
734		try {
735	<	exec.shutdown();
736	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
737	<	} catch(InterruptedException ie) {
738	<	fail("unexpected exception");
735	>	assertSame(x, y);
736	>	} catch (AssertionFailedError fail) {
737	>	threadRecordFailure(fail);
738	>	throw fail;
739	>	}
740	>	}
741	>
742	>	/**
743	>	* Calls threadFail with message "should throw exception".
744	>	*/
745	>	public void threadShouldThrow() {
746	>	threadFail("should throw exception");
747	>	}
748	>
749	>	/**
750	>	* Calls threadFail with message "should throw" + exceptionName.
751	>	*/
752	>	public void threadShouldThrow(String exceptionName) {
753	>	threadFail("should throw " + exceptionName);
754	>	}
755	>
756	>	/**
757	>	* Records the given exception using {@link #threadRecordFailure},
758	>	* then rethrows the exception, wrapping it in an
759	>	* AssertionFailedError if necessary.
760	>	*/
761	>	public void threadUnexpectedException(Throwable t) {
762	>	threadRecordFailure(t);
763	>	t.printStackTrace();
764	>	if (t instanceof RuntimeException)
765	>	throw (RuntimeException) t;
766	>	else if (t instanceof Error)
767	>	throw (Error) t;
768	>	else {
769	>	AssertionFailedError afe =
770	>	new AssertionFailedError("unexpected exception: " + t);
771	>	afe.initCause(t);
772	>	throw afe;
773		}
774		}
775
776	<	public static final long SHORT_DELAY_MS =   100;
777	<	public static final long SMALL_DELAY_MS =   500;
778	<	public static final long MEDIUM_DELAY_MS = 1000;
779	<	public static final long LONG_DELAY_MS =   5000;
776	>	/**
777	>	* Delays, via Thread.sleep, for the given millisecond delay, but
778	>	* if the sleep is shorter than specified, may re-sleep or yield
779	>	* until time elapses.  Ensures that the given time, as measured
780	>	* by System.nanoTime(), has elapsed.
781	>	*/
782	>	static void delay(long millis) throws InterruptedException {
783	>	long nanos = millis * (1000 * 1000);
784	>	final long wakeupTime = System.nanoTime() + nanos;
785	>	do {
786	>	if (millis > 0L)
787	>	Thread.sleep(millis);
788	>	else // too short to sleep
789	>	Thread.yield();
790	>	nanos = wakeupTime - System.nanoTime();
791	>	millis = nanos / (1000 * 1000);
792	>	} while (nanos >= 0L);
793	>	}
794
795	+	/**
796	+	* Allows use of try-with-resources with per-test thread pools.
797	+	*/
798	+	class PoolCleaner implements AutoCloseable {
799	+	private final ExecutorService pool;
800	+	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
801	+	public void close() { joinPool(pool); }
802	+	}
803	+
804	+	/**
805	+	* An extension of PoolCleaner that has an action to release the pool.
806	+	*/
807	+	class PoolCleanerWithReleaser extends PoolCleaner {
808	+	private final Runnable releaser;
809	+	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
810	+	super(pool);
811	+	this.releaser = releaser;
812	+	}
813	+	public void close() {
814	+	try {
815	+	releaser.run();
816	+	} finally {
817	+	super.close();
818	+	}
819	+	}
820	+	}
821	+
822	+	PoolCleaner cleaner(ExecutorService pool) {
823	+	return new PoolCleaner(pool);
824	+	}
825	+
826	+	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
827	+	return new PoolCleanerWithReleaser(pool, releaser);
828	+	}
829	+
830	+	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
831	+	return new PoolCleanerWithReleaser(pool, releaser(latch));
832	+	}
833	+
834	+	Runnable releaser(final CountDownLatch latch) {
835	+	return new Runnable() { public void run() {
836	+	do { latch.countDown(); }
837	+	while (latch.getCount() > 0);
838	+	}};
839	+	}
840	+
841	+	/**
842	+	* Waits out termination of a thread pool or fails doing so.
843	+	*/
844	+	void joinPool(ExecutorService pool) {
845	+	try {
846	+	pool.shutdown();
847	+	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
848	+	try {
849	+	threadFail("ExecutorService " + pool +
850	+	" did not terminate in a timely manner");
851	+	} finally {
852	+	// last resort, for the benefit of subsequent tests
853	+	pool.shutdownNow();
854	+	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
855	+	}
856	+	}
857	+	} catch (SecurityException ok) {
858	+	// Allowed in case test doesn't have privs
859	+	} catch (InterruptedException fail) {
860	+	threadFail("Unexpected InterruptedException");
861	+	}
862	+	}
863	+
864	+	/** Like Runnable, but with the freedom to throw anything */
865	+	interface Action { public void run() throws Throwable; }
866	+
867	+	/**
868	+	* Runs all the given actions in parallel, failing if any fail.
869	+	* Useful for running multiple variants of tests that are
870	+	* necessarily individually slow because they must block.
871	+	*/
872	+	void testInParallel(Action ... actions) {
873	+	ExecutorService pool = Executors.newCachedThreadPool();
874	+	try (PoolCleaner cleaner = cleaner(pool)) {
875	+	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
876	+	for (final Action action : actions)
877	+	futures.add(pool.submit(new CheckedRunnable() {
878	+	public void realRun() throws Throwable { action.run();}}));
879	+	for (Future<?> future : futures)
880	+	try {
881	+	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
882	+	} catch (ExecutionException ex) {
883	+	threadUnexpectedException(ex.getCause());
884	+	} catch (Exception ex) {
885	+	threadUnexpectedException(ex);
886	+	}
887	+	}
888	+	}
889	+
890	+	/**
891	+	* A debugging tool to print stack traces of most threads, as jstack does.
892	+	* Uninteresting threads are filtered out.
893	+	*/
894	+	static void dumpTestThreads() {
895	+	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
896	+	System.err.println("------ stacktrace dump start ------");
897	+	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
898	+	String name = info.getThreadName();
899	+	if ("Signal Dispatcher".equals(name))
900	+	continue;
901	+	if ("Reference Handler".equals(name)
902	+	&& info.getLockName().startsWith("java.lang.ref.Reference$Lock"))
903	+	continue;
904	+	if ("Finalizer".equals(name)
905	+	&& info.getLockName().startsWith("java.lang.ref.ReferenceQueue$Lock"))
906	+	continue;
907	+	if ("checkForWedgedTest".equals(name))
908	+	continue;
909	+	System.err.print(info);
910	+	}
911	+	System.err.println("------ stacktrace dump end ------");
912	+	}
913	+
914	+	/**
915	+	* Checks that thread does not terminate within the default
916	+	* millisecond delay of {@code timeoutMillis()}.
917	+	*/
918	+	void assertThreadStaysAlive(Thread thread) {
919	+	assertThreadStaysAlive(thread, timeoutMillis());
920	+	}
921	+
922	+	/**
923	+	* Checks that thread does not terminate within the given millisecond delay.
924	+	*/
925	+	void assertThreadStaysAlive(Thread thread, long millis) {
926	+	try {
927	+	// No need to optimize the failing case via Thread.join.
928	+	delay(millis);
929	+	assertTrue(thread.isAlive());
930	+	} catch (InterruptedException fail) {
931	+	threadFail("Unexpected InterruptedException");
932	+	}
933	+	}
934	+
935	+	/**
936	+	* Checks that the threads do not terminate within the default
937	+	* millisecond delay of {@code timeoutMillis()}.
938	+	*/
939	+	void assertThreadsStayAlive(Thread... threads) {
940	+	assertThreadsStayAlive(timeoutMillis(), threads);
941	+	}
942	+
943	+	/**
944	+	* Checks that the threads do not terminate within the given millisecond delay.
945	+	*/
946	+	void assertThreadsStayAlive(long millis, Thread... threads) {
947	+	try {
948	+	// No need to optimize the failing case via Thread.join.
949	+	delay(millis);
950	+	for (Thread thread : threads)
951	+	assertTrue(thread.isAlive());
952	+	} catch (InterruptedException fail) {
953	+	threadFail("Unexpected InterruptedException");
954	+	}
955	+	}
956	+
957	+	/**
958	+	* Checks that future.get times out, with the default timeout of
959	+	* {@code timeoutMillis()}.
960	+	*/
961	+	void assertFutureTimesOut(Future future) {
962	+	assertFutureTimesOut(future, timeoutMillis());
963	+	}
964	+
965	+	/**
966	+	* Checks that future.get times out, with the given millisecond timeout.
967	+	*/
968	+	void assertFutureTimesOut(Future future, long timeoutMillis) {
969	+	long startTime = System.nanoTime();
970	+	try {
971	+	future.get(timeoutMillis, MILLISECONDS);
972	+	shouldThrow();
973	+	} catch (TimeoutException success) {
974	+	} catch (Exception fail) {
975	+	threadUnexpectedException(fail);
976	+	} finally { future.cancel(true); }
977	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
978	+	}
979	+
980	+	/**
981	+	* Fails with message "should throw exception".
982	+	*/
983	+	public void shouldThrow() {
984	+	fail("Should throw exception");
985	+	}
986	+
987	+	/**
988	+	* Fails with message "should throw " + exceptionName.
989	+	*/
990	+	public void shouldThrow(String exceptionName) {
991	+	fail("Should throw " + exceptionName);
992	+	}
993
994		/**
995		* The number of elements to place in collections, arrays, etc.
#	Line 134 | Line 998 | public class JSR166TestCase extends Test
998
999		// Some convenient Integer constants
1000
1001	<	public static final Integer zero = new Integer(0);
1002	<	public static final Integer one = new Integer(1);
1003	<	public static final Integer two = new Integer(2);
1004	<	public static final Integer three  = new Integer(3);
1001	>	public static final Integer zero  = new Integer(0);
1002	>	public static final Integer one   = new Integer(1);
1003	>	public static final Integer two   = new Integer(2);
1004	>	public static final Integer three = new Integer(3);
1005		public static final Integer four  = new Integer(4);
1006		public static final Integer five  = new Integer(5);
1007	<	public static final Integer six = new Integer(6);
1007	>	public static final Integer six   = new Integer(6);
1008		public static final Integer seven = new Integer(7);
1009		public static final Integer eight = new Integer(8);
1010	<	public static final Integer nine = new Integer(9);
1010	>	public static final Integer nine  = new Integer(9);
1011		public static final Integer m1  = new Integer(-1);
1012		public static final Integer m2  = new Integer(-2);
1013		public static final Integer m3  = new Integer(-3);
1014	<	public static final Integer m4 = new Integer(-4);
1015	<	public static final Integer m5 = new Integer(-5);
1014	>	public static final Integer m4  = new Integer(-4);
1015	>	public static final Integer m5  = new Integer(-5);
1016	>	public static final Integer m6  = new Integer(-6);
1017		public static final Integer m10 = new Integer(-10);
1018
1019	+	/**
1020	+	* Runs Runnable r with a security policy that permits precisely
1021	+	* the specified permissions.  If there is no current security
1022	+	* manager, the runnable is run twice, both with and without a
1023	+	* security manager.  We require that any security manager permit
1024	+	* getPolicy/setPolicy.
1025	+	*/
1026	+	public void runWithPermissions(Runnable r, Permission... permissions) {
1027	+	SecurityManager sm = System.getSecurityManager();
1028	+	if (sm == null) {
1029	+	r.run();
1030	+	}
1031	+	runWithSecurityManagerWithPermissions(r, permissions);
1032	+	}
1033
1034	<	// Some convenient Runnable classes
1034	>	/**
1035	>	* Runs Runnable r with a security policy that permits precisely
1036	>	* the specified permissions.  If there is no current security
1037	>	* manager, a temporary one is set for the duration of the
1038	>	* Runnable.  We require that any security manager permit
1039	>	* getPolicy/setPolicy.
1040	>	*/
1041	>	public void runWithSecurityManagerWithPermissions(Runnable r,
1042	>	Permission... permissions) {
1043	>	SecurityManager sm = System.getSecurityManager();
1044	>	if (sm == null) {
1045	>	Policy savedPolicy = Policy.getPolicy();
1046	>	try {
1047	>	Policy.setPolicy(permissivePolicy());
1048	>	System.setSecurityManager(new SecurityManager());
1049	>	runWithSecurityManagerWithPermissions(r, permissions);
1050	>	} finally {
1051	>	System.setSecurityManager(null);
1052	>	Policy.setPolicy(savedPolicy);
1053	>	}
1054	>	} else {
1055	>	Policy savedPolicy = Policy.getPolicy();
1056	>	AdjustablePolicy policy = new AdjustablePolicy(permissions);
1057	>	Policy.setPolicy(policy);
1058
1059	<	public static class NoOpRunnable implements Runnable {
1060	<	public void run() {}
1059	>	try {
1060	>	r.run();
1061	>	} finally {
1062	>	policy.addPermission(new SecurityPermission("setPolicy"));
1063	>	Policy.setPolicy(savedPolicy);
1064	>	}
1065	>	}
1066		}
1067
1068	<	public static class NoOpCallable implements Callable {
1069	<	public Object call() { return Boolean.TRUE; }
1068	>	/**
1069	>	* Runs a runnable without any permissions.
1070	>	*/
1071	>	public void runWithoutPermissions(Runnable r) {
1072	>	runWithPermissions(r);
1073		}
1074
1075	<	public class ShortRunnable implements Runnable {
1076	<	public void run() {
1077	<	try {
1078	<	Thread.sleep(SHORT_DELAY_MS);
1075	>	/**
1076	>	* A security policy where new permissions can be dynamically added
1077	>	* or all cleared.
1078	>	*/
1079	>	public static class AdjustablePolicy extends java.security.Policy {
1080	>	Permissions perms = new Permissions();
1081	>	AdjustablePolicy(Permission... permissions) {
1082	>	for (Permission permission : permissions)
1083	>	perms.add(permission);
1084	>	}
1085	>	void addPermission(Permission perm) { perms.add(perm); }
1086	>	void clearPermissions() { perms = new Permissions(); }
1087	>	public PermissionCollection getPermissions(CodeSource cs) {
1088	>	return perms;
1089	>	}
1090	>	public PermissionCollection getPermissions(ProtectionDomain pd) {
1091	>	return perms;
1092	>	}
1093	>	public boolean implies(ProtectionDomain pd, Permission p) {
1094	>	return perms.implies(p);
1095	>	}
1096	>	public void refresh() {}
1097	>	public String toString() {
1098	>	List<Permission> ps = new ArrayList<Permission>();
1099	>	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1100	>	ps.add(e.nextElement());
1101	>	return "AdjustablePolicy with permissions " + ps;
1102	>	}
1103	>	}
1104	>
1105	>	/**
1106	>	* Returns a policy containing all the permissions we ever need.
1107	>	*/
1108	>	public static Policy permissivePolicy() {
1109	>	return new AdjustablePolicy
1110	>	// Permissions j.u.c. needs directly
1111	>	(new RuntimePermission("modifyThread"),
1112	>	new RuntimePermission("getClassLoader"),
1113	>	new RuntimePermission("setContextClassLoader"),
1114	>	// Permissions needed to change permissions!
1115	>	new SecurityPermission("getPolicy"),
1116	>	new SecurityPermission("setPolicy"),
1117	>	new RuntimePermission("setSecurityManager"),
1118	>	// Permissions needed by the junit test harness
1119	>	new RuntimePermission("accessDeclaredMembers"),
1120	>	new PropertyPermission("*", "read"),
1121	>	new java.io.FilePermission("<<ALL FILES>>", "read"));
1122	>	}
1123	>
1124	>	/**
1125	>	* Sleeps until the given time has elapsed.
1126	>	* Throws AssertionFailedError if interrupted.
1127	>	*/
1128	>	void sleep(long millis) {
1129	>	try {
1130	>	delay(millis);
1131	>	} catch (InterruptedException fail) {
1132	>	AssertionFailedError afe =
1133	>	new AssertionFailedError("Unexpected InterruptedException");
1134	>	afe.initCause(fail);
1135	>	throw afe;
1136	>	}
1137	>	}
1138	>
1139	>	/**
1140	>	* Spin-waits up to the specified number of milliseconds for the given
1141	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1142	>	*/
1143	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1144	>	long startTime = System.nanoTime();
1145	>	for (;;) {
1146	>	Thread.State s = thread.getState();
1147	>	if (s == Thread.State.BLOCKED ||
1148	>	s == Thread.State.WAITING ||
1149	>	s == Thread.State.TIMED_WAITING)
1150	>	return;
1151	>	else if (s == Thread.State.TERMINATED)
1152	>	fail("Unexpected thread termination");
1153	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1154	>	threadAssertTrue(thread.isAlive());
1155	>	return;
1156		}
1157	<	catch(Exception e) {
1158	<	threadFail("unexpectedException");
1157	>	Thread.yield();
1158	>	}
1159	>	}
1160	>
1161	>	/**
1162	>	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
1163	>	* state: BLOCKED, WAITING, or TIMED_WAITING.
1164	>	*/
1165	>	void waitForThreadToEnterWaitState(Thread thread) {
1166	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
1167	>	}
1168	>
1169	>	/**
1170	>	* Returns the number of milliseconds since time given by
1171	>	* startNanoTime, which must have been previously returned from a
1172	>	* call to {@link System#nanoTime()}.
1173	>	*/
1174	>	static long millisElapsedSince(long startNanoTime) {
1175	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1176	>	}
1177	>
1178	>	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1179	>	//         long startTime = System.nanoTime();
1180	>	//         try {
1181	>	//             r.run();
1182	>	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1183	>	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1184	>	//             throw new AssertionFailedError("did not return promptly");
1185	>	//     }
1186	>
1187	>	//     void assertTerminatesPromptly(Runnable r) {
1188	>	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1189	>	//     }
1190	>
1191	>	/**
1192	>	* Checks that timed f.get() returns the expected value, and does not
1193	>	* wait for the timeout to elapse before returning.
1194	>	*/
1195	>	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1196	>	long startTime = System.nanoTime();
1197	>	try {
1198	>	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1199	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1200	>	if (millisElapsedSince(startTime) > timeoutMillis/2)
1201	>	throw new AssertionFailedError("timed get did not return promptly");
1202	>	}
1203	>
1204	>	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1205	>	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1206	>	}
1207	>
1208	>	/**
1209	>	* Returns a new started daemon Thread running the given runnable.
1210	>	*/
1211	>	Thread newStartedThread(Runnable runnable) {
1212	>	Thread t = new Thread(runnable);
1213	>	t.setDaemon(true);
1214	>	t.start();
1215	>	return t;
1216	>	}
1217	>
1218	>	/**
1219	>	* Waits for the specified time (in milliseconds) for the thread
1220	>	* to terminate (using {@link Thread#join(long)}), else interrupts
1221	>	* the thread (in the hope that it may terminate later) and fails.
1222	>	*/
1223	>	void awaitTermination(Thread t, long timeoutMillis) {
1224	>	try {
1225	>	t.join(timeoutMillis);
1226	>	} catch (InterruptedException fail) {
1227	>	threadUnexpectedException(fail);
1228	>	} finally {
1229	>	if (t.getState() != Thread.State.TERMINATED) {
1230	>	t.interrupt();
1231	>	threadFail("timed out waiting for thread to terminate");
1232		}
1233		}
1234		}
1235
1236	<	public class ShortInterruptedRunnable implements Runnable {
1237	<	public void run() {
1236	>	/**
1237	>	* Waits for LONG_DELAY_MS milliseconds for the thread to
1238	>	* terminate (using {@link Thread#join(long)}), else interrupts
1239	>	* the thread (in the hope that it may terminate later) and fails.
1240	>	*/
1241	>	void awaitTermination(Thread t) {
1242	>	awaitTermination(t, LONG_DELAY_MS);
1243	>	}
1244	>
1245	>	// Some convenient Runnable classes
1246	>
1247	>	public abstract class CheckedRunnable implements Runnable {
1248	>	protected abstract void realRun() throws Throwable;
1249	>
1250	>	public final void run() {
1251		try {
1252	<	Thread.sleep(SHORT_DELAY_MS);
1253	<	threadFail("should throw IE");
1252	>	realRun();
1253	>	} catch (Throwable fail) {
1254	>	threadUnexpectedException(fail);
1255		}
1256	<	catch(InterruptedException success) {
1256	>	}
1257	>	}
1258	>
1259	>	public abstract class RunnableShouldThrow implements Runnable {
1260	>	protected abstract void realRun() throws Throwable;
1261	>
1262	>	final Class<?> exceptionClass;
1263	>
1264	>	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
1265	>	this.exceptionClass = exceptionClass;
1266	>	}
1267	>
1268	>	public final void run() {
1269	>	try {
1270	>	realRun();
1271	>	threadShouldThrow(exceptionClass.getSimpleName());
1272	>	} catch (Throwable t) {
1273	>	if (! exceptionClass.isInstance(t))
1274	>	threadUnexpectedException(t);
1275		}
1276		}
1277		}
1278
1279	<	public class SmallRunnable implements Runnable {
1280	<	public void run() {
1279	>	public abstract class ThreadShouldThrow extends Thread {
1280	>	protected abstract void realRun() throws Throwable;
1281	>
1282	>	final Class<?> exceptionClass;
1283	>
1284	>	<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) {
1285	>	this.exceptionClass = exceptionClass;
1286	>	}
1287	>
1288	>	public final void run() {
1289		try {
1290	<	Thread.sleep(SMALL_DELAY_MS);
1290	>	realRun();
1291	>	threadShouldThrow(exceptionClass.getSimpleName());
1292	>	} catch (Throwable t) {
1293	>	if (! exceptionClass.isInstance(t))
1294	>	threadUnexpectedException(t);
1295		}
1296	<	catch(Exception e) {
1297	<	threadFail("unexpectedException");
1296	>	}
1297	>	}
1298	>
1299	>	public abstract class CheckedInterruptedRunnable implements Runnable {
1300	>	protected abstract void realRun() throws Throwable;
1301	>
1302	>	public final void run() {
1303	>	try {
1304	>	realRun();
1305	>	threadShouldThrow("InterruptedException");
1306	>	} catch (InterruptedException success) {
1307	>	threadAssertFalse(Thread.interrupted());
1308	>	} catch (Throwable fail) {
1309	>	threadUnexpectedException(fail);
1310		}
1311		}
1312		}
1313
1314	<	public class SmallCallable implements Callable {
1315	<	public Object call() {
1314	>	public abstract class CheckedCallable<T> implements Callable<T> {
1315	>	protected abstract T realCall() throws Throwable;
1316	>
1317	>	public final T call() {
1318		try {
1319	<	Thread.sleep(SMALL_DELAY_MS);
1319	>	return realCall();
1320	>	} catch (Throwable fail) {
1321	>	threadUnexpectedException(fail);
1322	>	return null;
1323		}
1324	<	catch(Exception e) {
1325	<	threadFail("unexpectedException");
1324	>	}
1325	>	}
1326	>
1327	>	public abstract class CheckedInterruptedCallable<T>
1328	>	implements Callable<T> {
1329	>	protected abstract T realCall() throws Throwable;
1330	>
1331	>	public final T call() {
1332	>	try {
1333	>	T result = realCall();
1334	>	threadShouldThrow("InterruptedException");
1335	>	return result;
1336	>	} catch (InterruptedException success) {
1337	>	threadAssertFalse(Thread.interrupted());
1338	>	} catch (Throwable fail) {
1339	>	threadUnexpectedException(fail);
1340		}
1341	+	return null;
1342	+	}
1343	+	}
1344	+
1345	+	public static class NoOpRunnable implements Runnable {
1346	+	public void run() {}
1347	+	}
1348	+
1349	+	public static class NoOpCallable implements Callable {
1350	+	public Object call() { return Boolean.TRUE; }
1351	+	}
1352	+
1353	+	public static final String TEST_STRING = "a test string";
1354	+
1355	+	public static class StringTask implements Callable<String> {
1356	+	final String value;
1357	+	public StringTask() { this(TEST_STRING); }
1358	+	public StringTask(String value) { this.value = value; }
1359	+	public String call() { return value; }
1360	+	}
1361	+
1362	+	public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1363	+	return new CheckedCallable<String>() {
1364	+	protected String realCall() {
1365	+	try {
1366	+	latch.await();
1367	+	} catch (InterruptedException quittingTime) {}
1368	+	return TEST_STRING;
1369	+	}};
1370	+	}
1371	+
1372	+	public Runnable countDowner(final CountDownLatch latch) {
1373	+	return new CheckedRunnable() {
1374	+	public void realRun() throws InterruptedException {
1375	+	latch.countDown();
1376	+	}};
1377	+	}
1378	+
1379	+	class LatchAwaiter extends CheckedRunnable {
1380	+	static final int NEW = 0;
1381	+	static final int RUNNING = 1;
1382	+	static final int DONE = 2;
1383	+	final CountDownLatch latch;
1384	+	int state = NEW;
1385	+	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1386	+	public void realRun() throws InterruptedException {
1387	+	state = 1;
1388	+	await(latch);
1389	+	state = 2;
1390	+	}
1391	+	}
1392	+
1393	+	public LatchAwaiter awaiter(CountDownLatch latch) {
1394	+	return new LatchAwaiter(latch);
1395	+	}
1396	+
1397	+	public void await(CountDownLatch latch) {
1398	+	try {
1399	+	if (!latch.await(LONG_DELAY_MS, MILLISECONDS))
1400	+	fail("timed out waiting for CountDownLatch for "
1401	+	+ (LONG_DELAY_MS/1000) + " sec");
1402	+	} catch (Throwable fail) {
1403	+	threadUnexpectedException(fail);
1404	+	}
1405	+	}
1406	+
1407	+	public void await(Semaphore semaphore) {
1408	+	try {
1409	+	if (!semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS))
1410	+	fail("timed out waiting for Semaphore for "
1411	+	+ (LONG_DELAY_MS/1000) + " sec");
1412	+	} catch (Throwable fail) {
1413	+	threadUnexpectedException(fail);
1414	+	}
1415	+	}
1416	+
1417	+	//     /**
1418	+	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1419	+	//      */
1420	+	//     public void await(AtomicBoolean flag) {
1421	+	//         await(flag, LONG_DELAY_MS);
1422	+	//     }
1423	+
1424	+	//     /**
1425	+	//      * Spin-waits up to the specified timeout until flag becomes true.
1426	+	//      */
1427	+	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1428	+	//         long startTime = System.nanoTime();
1429	+	//         while (!flag.get()) {
1430	+	//             if (millisElapsedSince(startTime) > timeoutMillis)
1431	+	//                 throw new AssertionFailedError("timed out");
1432	+	//             Thread.yield();
1433	+	//         }
1434	+	//     }
1435	+
1436	+	public static class NPETask implements Callable<String> {
1437	+	public String call() { throw new NullPointerException(); }
1438	+	}
1439	+
1440	+	public static class CallableOne implements Callable<Integer> {
1441	+	public Integer call() { return one; }
1442	+	}
1443	+
1444	+	public class ShortRunnable extends CheckedRunnable {
1445	+	protected void realRun() throws Throwable {
1446	+	delay(SHORT_DELAY_MS);
1447	+	}
1448	+	}
1449	+
1450	+	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1451	+	protected void realRun() throws InterruptedException {
1452	+	delay(SHORT_DELAY_MS);
1453	+	}
1454	+	}
1455	+
1456	+	public class SmallRunnable extends CheckedRunnable {
1457	+	protected void realRun() throws Throwable {
1458	+	delay(SMALL_DELAY_MS);
1459	+	}
1460	+	}
1461	+
1462	+	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1463	+	protected void realRun() {
1464	+	try {
1465	+	delay(SMALL_DELAY_MS);
1466	+	} catch (InterruptedException ok) {}
1467	+	}
1468	+	}
1469	+
1470	+	public class SmallCallable extends CheckedCallable {
1471	+	protected Object realCall() throws InterruptedException {
1472	+	delay(SMALL_DELAY_MS);
1473		return Boolean.TRUE;
1474		}
1475		}
1476
1477	<	public class SmallInterruptedRunnable implements Runnable {
1477	>	public class MediumRunnable extends CheckedRunnable {
1478	>	protected void realRun() throws Throwable {
1479	>	delay(MEDIUM_DELAY_MS);
1480	>	}
1481	>	}
1482	>
1483	>	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1484	>	protected void realRun() throws InterruptedException {
1485	>	delay(MEDIUM_DELAY_MS);
1486	>	}
1487	>	}
1488	>
1489	>	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1490	>	return new CheckedRunnable() {
1491	>	protected void realRun() {
1492	>	try {
1493	>	delay(timeoutMillis);
1494	>	} catch (InterruptedException ok) {}
1495	>	}};
1496	>	}
1497	>
1498	>	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1499	>	protected void realRun() {
1500	>	try {
1501	>	delay(MEDIUM_DELAY_MS);
1502	>	} catch (InterruptedException ok) {}
1503	>	}
1504	>	}
1505	>
1506	>	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1507	>	protected void realRun() {
1508	>	try {
1509	>	delay(LONG_DELAY_MS);
1510	>	} catch (InterruptedException ok) {}
1511	>	}
1512	>	}
1513	>
1514	>	/**
1515	>	* For use as ThreadFactory in constructors
1516	>	*/
1517	>	public static class SimpleThreadFactory implements ThreadFactory {
1518	>	public Thread newThread(Runnable r) {
1519	>	return new Thread(r);
1520	>	}
1521	>	}
1522	>
1523	>	public interface TrackedRunnable extends Runnable {
1524	>	boolean isDone();
1525	>	}
1526	>
1527	>	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1528	>	return new TrackedRunnable() {
1529	>	private volatile boolean done = false;
1530	>	public boolean isDone() { return done; }
1531	>	public void run() {
1532	>	try {
1533	>	delay(timeoutMillis);
1534	>	done = true;
1535	>	} catch (InterruptedException ok) {}
1536	>	}
1537	>	};
1538	>	}
1539	>
1540	>	public static class TrackedShortRunnable implements Runnable {
1541	>	public volatile boolean done = false;
1542		public void run() {
1543		try {
1544	<	Thread.sleep(SMALL_DELAY_MS);
1545	<	threadFail("should throw IE");
1546	<	}
1547	<	catch(InterruptedException success) {
1548	<	}
1544	>	delay(SHORT_DELAY_MS);
1545	>	done = true;
1546	>	} catch (InterruptedException ok) {}
1547	>	}
1548	>	}
1549	>
1550	>	public static class TrackedSmallRunnable implements Runnable {
1551	>	public volatile boolean done = false;
1552	>	public void run() {
1553	>	try {
1554	>	delay(SMALL_DELAY_MS);
1555	>	done = true;
1556	>	} catch (InterruptedException ok) {}
1557		}
1558		}
1559
1560	+	public static class TrackedMediumRunnable implements Runnable {
1561	+	public volatile boolean done = false;
1562	+	public void run() {
1563	+	try {
1564	+	delay(MEDIUM_DELAY_MS);
1565	+	done = true;
1566	+	} catch (InterruptedException ok) {}
1567	+	}
1568	+	}
1569
1570	<	public class MediumRunnable implements Runnable {
1570	>	public static class TrackedLongRunnable implements Runnable {
1571	>	public volatile boolean done = false;
1572		public void run() {
1573		try {
1574	<	Thread.sleep(MEDIUM_DELAY_MS);
1575	<	}
1576	<	catch(Exception e) {
228	<	threadFail("unexpectedException");
229	<	}
1574	>	delay(LONG_DELAY_MS);
1575	>	done = true;
1576	>	} catch (InterruptedException ok) {}
1577		}
1578		}
1579
1580	<	public class MediumInterruptedRunnable implements Runnable {
1580	>	public static class TrackedNoOpRunnable implements Runnable {
1581	>	public volatile boolean done = false;
1582		public void run() {
1583	+	done = true;
1584	+	}
1585	+	}
1586	+
1587	+	public static class TrackedCallable implements Callable {
1588	+	public volatile boolean done = false;
1589	+	public Object call() {
1590	+	try {
1591	+	delay(SMALL_DELAY_MS);
1592	+	done = true;
1593	+	} catch (InterruptedException ok) {}
1594	+	return Boolean.TRUE;
1595	+	}
1596	+	}
1597	+
1598	+	/**
1599	+	* Analog of CheckedRunnable for RecursiveAction
1600	+	*/
1601	+	public abstract class CheckedRecursiveAction extends RecursiveAction {
1602	+	protected abstract void realCompute() throws Throwable;
1603	+
1604	+	@Override protected final void compute() {
1605		try {
1606	<	Thread.sleep(MEDIUM_DELAY_MS);
1607	<	threadFail("should throw IE");
1606	>	realCompute();
1607	>	} catch (Throwable fail) {
1608	>	threadUnexpectedException(fail);
1609		}
1610	<	catch(InterruptedException success) {
1610	>	}
1611	>	}
1612	>
1613	>	/**
1614	>	* Analog of CheckedCallable for RecursiveTask
1615	>	*/
1616	>	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1617	>	protected abstract T realCompute() throws Throwable;
1618	>
1619	>	@Override protected final T compute() {
1620	>	try {
1621	>	return realCompute();
1622	>	} catch (Throwable fail) {
1623	>	threadUnexpectedException(fail);
1624	>	return null;
1625		}
1626		}
1627		}
1628
1629	<	public class MediumPossiblyInterruptedRunnable implements Runnable {
1630	<	public void run() {
1629	>	/**
1630	>	* For use as RejectedExecutionHandler in constructors
1631	>	*/
1632	>	public static class NoOpREHandler implements RejectedExecutionHandler {
1633	>	public void rejectedExecution(Runnable r,
1634	>	ThreadPoolExecutor executor) {}
1635	>	}
1636	>
1637	>	/**
1638	>	* A CyclicBarrier that uses timed await and fails with
1639	>	* AssertionFailedErrors instead of throwing checked exceptions.
1640	>	*/
1641	>	public class CheckedBarrier extends CyclicBarrier {
1642	>	public CheckedBarrier(int parties) { super(parties); }
1643	>
1644	>	public int await() {
1645		try {
1646	<	Thread.sleep(MEDIUM_DELAY_MS);
1646	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1647	>	} catch (TimeoutException timedOut) {
1648	>	throw new AssertionFailedError("timed out");
1649	>	} catch (Exception fail) {
1650	>	AssertionFailedError afe =
1651	>	new AssertionFailedError("Unexpected exception: " + fail);
1652	>	afe.initCause(fail);
1653	>	throw afe;
1654		}
1655	<	catch(InterruptedException success) {
1655	>	}
1656	>	}
1657	>
1658	>	void checkEmpty(BlockingQueue q) {
1659	>	try {
1660	>	assertTrue(q.isEmpty());
1661	>	assertEquals(0, q.size());
1662	>	assertNull(q.peek());
1663	>	assertNull(q.poll());
1664	>	assertNull(q.poll(0, MILLISECONDS));
1665	>	assertEquals(q.toString(), "[]");
1666	>	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1667	>	assertFalse(q.iterator().hasNext());
1668	>	try {
1669	>	q.element();
1670	>	shouldThrow();
1671	>	} catch (NoSuchElementException success) {}
1672	>	try {
1673	>	q.iterator().next();
1674	>	shouldThrow();
1675	>	} catch (NoSuchElementException success) {}
1676	>	try {
1677	>	q.remove();
1678	>	shouldThrow();
1679	>	} catch (NoSuchElementException success) {}
1680	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1681	>	}
1682	>
1683	>	void assertSerialEquals(Object x, Object y) {
1684	>	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1685	>	}
1686	>
1687	>	void assertNotSerialEquals(Object x, Object y) {
1688	>	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1689	>	}
1690	>
1691	>	byte[] serialBytes(Object o) {
1692	>	try {
1693	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1694	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1695	>	oos.writeObject(o);
1696	>	oos.flush();
1697	>	oos.close();
1698	>	return bos.toByteArray();
1699	>	} catch (Throwable fail) {
1700	>	threadUnexpectedException(fail);
1701	>	return new byte[0];
1702	>	}
1703	>	}
1704	>
1705	>	@SuppressWarnings("unchecked")
1706	>	<T> T serialClone(T o) {
1707	>	try {
1708	>	ObjectInputStream ois = new ObjectInputStream
1709	>	(new ByteArrayInputStream(serialBytes(o)));
1710	>	T clone = (T) ois.readObject();
1711	>	assertSame(o.getClass(), clone.getClass());
1712	>	return clone;
1713	>	} catch (Throwable fail) {
1714	>	threadUnexpectedException(fail);
1715	>	return null;
1716	>	}
1717	>	}
1718	>
1719	>	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1720	>	Runnable... throwingActions) {
1721	>	for (Runnable throwingAction : throwingActions) {
1722	>	boolean threw = false;
1723	>	try { throwingAction.run(); }
1724	>	catch (Throwable t) {
1725	>	threw = true;
1726	>	if (!expectedExceptionClass.isInstance(t)) {
1727	>	AssertionFailedError afe =
1728	>	new AssertionFailedError
1729	>	("Expected " + expectedExceptionClass.getName() +
1730	>	", got " + t.getClass().getName());
1731	>	afe.initCause(t);
1732	>	threadUnexpectedException(afe);
1733	>	}
1734		}
1735	+	if (!threw)
1736	+	shouldThrow(expectedExceptionClass.getName());
1737		}
1738		}
1739	<
1739	>
1740	>	public void assertIteratorExhausted(Iterator<?> it) {
1741	>	try {
1742	>	it.next();
1743	>	shouldThrow();
1744	>	} catch (NoSuchElementException success) {}
1745	>	assertFalse(it.hasNext());
1746	>	}
1747		}

Diff Legend

–	Removed lines
+	Added lines
<	Changed lines
>	Changed lines