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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 1.144 by jsr166, Mon Sep 14 03:14:01 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.reflect.Constructor;
19	+	import java.lang.reflect.Method;
20	+	import java.lang.reflect.Modifier;
21	+	import java.security.CodeSource;
22	+	import java.security.Permission;
23	+	import java.security.PermissionCollection;
24	+	import java.security.Permissions;
25	+	import java.security.Policy;
26	+	import java.security.ProtectionDomain;
27	+	import java.security.SecurityPermission;
28	+	import java.util.ArrayList;
29	+	import java.util.Arrays;
30	+	import java.util.Date;
31	+	import java.util.Enumeration;
32	+	import java.util.Iterator;
33	+	import java.util.List;
34	+	import java.util.NoSuchElementException;
35	+	import java.util.PropertyPermission;
36	+	import java.util.concurrent.BlockingQueue;
37	+	import java.util.concurrent.Callable;
38	+	import java.util.concurrent.CountDownLatch;
39	+	import java.util.concurrent.CyclicBarrier;
40	+	import java.util.concurrent.ExecutionException;
41	+	import java.util.concurrent.Executors;
42	+	import java.util.concurrent.ExecutorService;
43	+	import java.util.concurrent.Future;
44	+	import java.util.concurrent.RecursiveAction;
45	+	import java.util.concurrent.RecursiveTask;
46	+	import java.util.concurrent.RejectedExecutionHandler;
47	+	import java.util.concurrent.Semaphore;
48	+	import java.util.concurrent.ThreadFactory;
49	+	import java.util.concurrent.ThreadPoolExecutor;
50	+	import java.util.concurrent.TimeoutException;
51	+	import java.util.concurrent.atomic.AtomicReference;
52	+	import java.util.regex.Pattern;
53	+
54	+	import junit.framework.AssertionFailedError;
55	+	import junit.framework.Test;
56	+	import junit.framework.TestCase;
57	+	import junit.framework.TestResult;
58	+	import junit.framework.TestSuite;
59
60		/**
61		* Base class for JSR166 Junit TCK tests.  Defines some constants,
62		* utility methods and classes, as well as a simple framework for
63		* helping to make sure that assertions failing in generated threads
64		* cause the associated test that generated them to itself fail (which
65	<	* JUnit doe not otherwise arrange).  The rules for creating such
65	>	* JUnit does not otherwise arrange).  The rules for creating such
66		* tests are:
67		*
68		* <ol>
69		*
70	<	* <li> All assertions in code running in generated threads must use
71	<	* the forms {@link threadFail} , {@link threadAssertTrue} {@link
72	<	* threadAssertEquals}, or {@link threadAssertNull}, (not
73	<	* <tt>fail</tt>, <tt>assertTrue</tt>, etc.) It is OK (but not
70	>	* <li>All assertions in code running in generated threads must use
71	>	* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
72	>	* #threadAssertEquals}, or {@link #threadAssertNull}, (not
73	>	* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
74		* particularly recommended) for other code to use these forms too.
75		* Only the most typically used JUnit assertion methods are defined
76	<	* this way, but enough to live with.</li>
76	>	* this way, but enough to live with.
77		*
78	<	* <li> If you override {@link setUp} or {@link tearDown}, make sure
79	<	* to invoke <tt>super.setUp</tt> and <tt>super.tearDown</tt> within
78	>	* <li>If you override {@link #setUp} or {@link #tearDown}, make sure
79	>	* to invoke {@code super.setUp} and {@code super.tearDown} within
80		* them. These methods are used to clear and check for thread
81	<	* assertion failures.</li>
81	>	* assertion failures.
82		*
83	<	* <li>All delays and timeouts must use one of the constants <tt>
84	<	* SHORT_DELAY_MS</tt>, <tt> SMALL_DELAY_MS</tt>, <tt> MEDIUM_DELAY_MS</tt>,
85	<	* <tt> LONG_DELAY_MS</tt>. The idea here is that a SHORT is always
83	>	* <li>All delays and timeouts must use one of the constants {@code
84	>	* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
85	>	* {@code LONG_DELAY_MS}. The idea here is that a SHORT is always
86		* discriminable from zero time, and always allows enough time for the
87		* small amounts of computation (creating a thread, calling a few
88		* methods, etc) needed to reach a timeout point. Similarly, a SMALL
89		* is always discriminable as larger than SHORT and smaller than
90		* MEDIUM.  And so on. These constants are set to conservative values,
91		* but even so, if there is ever any doubt, they can all be increased
92	<	* in one spot to rerun tests on slower platforms</li>
92	>	* in one spot to rerun tests on slower platforms.
93		*
94	<	* <li> All threads generated must be joined inside each test case
95	<	* method (or <tt>fail</tt> to do so) before returning from the
96	<	* method. The <tt> joinPool</tt> method can be used to do this when
97	<	* using Executors.</li>
94	>	* <li>All threads generated must be joined inside each test case
95	>	* method (or {@code fail} to do so) before returning from the
96	>	* method. The {@code joinPool} method can be used to do this when
97	>	* using Executors.
98		*
99		* </ol>
100		*
101	<	* <p> <b>Other notes</b>
101	>	* <p><b>Other notes</b>
102		* <ul>
103		*
104	<	* <li> Usually, there is one testcase method per JSR166 method
104	>	* <li>Usually, there is one testcase method per JSR166 method
105		* covering "normal" operation, and then as many exception-testing
106		* methods as there are exceptions the method can throw. Sometimes
107		* there are multiple tests per JSR166 method when the different
108		* "normal" behaviors differ significantly. And sometimes testcases
109		* cover multiple methods when they cannot be tested in
110	<	* isolation.</li>
111	<	*
112	<	* <li> The documentation style for testcases is to provide as javadoc
110	>	* isolation.
111	>	*
112	>	* <li>The documentation style for testcases is to provide as javadoc
113		* a simple sentence or two describing the property that the testcase
114		* method purports to test. The javadocs do not say anything about how
115	<	* the property is tested. To find out, read the code.</li>
115	>	* the property is tested. To find out, read the code.
116		*
117	<	* <li> These tests are "conformance tests", and do not attempt to
117	>	* <li>These tests are "conformance tests", and do not attempt to
118		* test throughput, latency, scalability or other performance factors
119		* (see the separate "jtreg" tests for a set intended to check these
120		* for the most central aspects of functionality.) So, most tests use
121		* the smallest sensible numbers of threads, collection sizes, etc
122	<	* needed to check basic conformance.</li>
122	>	* needed to check basic conformance.
123		*
124		* <li>The test classes currently do not declare inclusion in
125		* any particular package to simplify things for people integrating
126	<	* them in TCK test suites.</li>
126	>	* them in TCK test suites.
127		*
128	<	* <li> As a convenience, the <tt>main</tt> of this class (JSR166TestCase)
129	<	* runs all JSR166 unit tests.</li>
128	>	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
129	>	* runs all JSR166 unit tests.
130		*
131		* </ul>
132		*/
133		public class JSR166TestCase extends TestCase {
134	+	private static final boolean useSecurityManager =
135	+	Boolean.getBoolean("jsr166.useSecurityManager");
136	+
137	+	protected static final boolean expensiveTests =
138	+	Boolean.getBoolean("jsr166.expensiveTests");
139	+
140	+	/**
141	+	* If true, also run tests that are not part of the official tck
142	+	* because they test unspecified implementation details.
143	+	*/
144	+	protected static final boolean testImplementationDetails =
145	+	Boolean.getBoolean("jsr166.testImplementationDetails");
146	+
147	+	/**
148	+	* If true, report on stdout all "slow" tests, that is, ones that
149	+	* take more than profileThreshold milliseconds to execute.
150	+	*/
151	+	private static final boolean profileTests =
152	+	Boolean.getBoolean("jsr166.profileTests");
153	+
154	+	/**
155	+	* The number of milliseconds that tests are permitted for
156	+	* execution without being reported, when profileTests is set.
157	+	*/
158	+	private static final long profileThreshold =
159	+	Long.getLong("jsr166.profileThreshold", 100);
160	+
161	+	/**
162	+	* The number of repetitions per test (for tickling rare bugs).
163	+	*/
164	+	private static final int runsPerTest =
165	+	Integer.getInteger("jsr166.runsPerTest", 1);
166	+
167	+	/**
168	+	* The number of repetitions of the test suite (for finding leaks?).
169	+	*/
170	+	private static final int suiteRuns =
171	+	Integer.getInteger("jsr166.suiteRuns", 1);
172	+
173	+	public JSR166TestCase() { super(); }
174	+	public JSR166TestCase(String name) { super(name); }
175	+
176	+	/**
177	+	* A filter for tests to run, matching strings of the form
178	+	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
179	+	* Usefully combined with jsr166.runsPerTest.
180	+	*/
181	+	private static final Pattern methodFilter = methodFilter();
182	+
183	+	private static Pattern methodFilter() {
184	+	String regex = System.getProperty("jsr166.methodFilter");
185	+	return (regex == null) ? null : Pattern.compile(regex);
186	+	}
187	+
188	+	protected void runTest() throws Throwable {
189	+	if (methodFilter == null
190	+	|| methodFilter.matcher(toString()).find()) {
191	+	for (int i = 0; i < runsPerTest; i++) {
192	+	if (profileTests)
193	+	runTestProfiled();
194	+	else
195	+	super.runTest();
196	+	}
197	+	}
198	+	}
199	+
200	+	protected void runTestProfiled() throws Throwable {
201	+	// Warmup run, notably to trigger all needed classloading.
202	+	super.runTest();
203	+	long t0 = System.nanoTime();
204	+	try {
205	+	super.runTest();
206	+	} finally {
207	+	long elapsedMillis = millisElapsedSince(t0);
208	+	if (elapsedMillis >= profileThreshold)
209	+	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
210	+	}
211	+	}
212	+
213		/**
214	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
215	<	*/
216	<	public static void main (String[] args) {
217	<	junit.textui.TestRunner.run (suite());
214	>	* Runs all JSR166 unit tests using junit.textui.TestRunner.
215	>	*/
216	>	public static void main(String[] args) {
217	>	main(suite(), args);
218		}
219
220		/**
221	<	* Collects all JSR166 unit tests as one suite
222	<	*/
223	<	public static Test suite ( ) {
224	<	TestSuite suite = new TestSuite("JSR166 Unit Tests");
225	<
226	<	suite.addTest(new TestSuite(ArrayBlockingQueueTest.class));
227	<	suite.addTest(new TestSuite(AtomicBooleanTest.class));
228	<	suite.addTest(new TestSuite(AtomicIntegerArrayTest.class));
229	<	suite.addTest(new TestSuite(AtomicIntegerFieldUpdaterTest.class));
230	<	suite.addTest(new TestSuite(AtomicIntegerTest.class));
231	<	suite.addTest(new TestSuite(AtomicLongArrayTest.class));
232	<	suite.addTest(new TestSuite(AtomicLongFieldUpdaterTest.class));
233	<	suite.addTest(new TestSuite(AtomicLongTest.class));
234	<	suite.addTest(new TestSuite(AtomicMarkableReferenceTest.class));
235	<	suite.addTest(new TestSuite(AtomicReferenceArrayTest.class));
236	<	suite.addTest(new TestSuite(AtomicReferenceFieldUpdaterTest.class));
237	<	suite.addTest(new TestSuite(AtomicReferenceTest.class));
238	<	suite.addTest(new TestSuite(AtomicStampedReferenceTest.class));
239	<	suite.addTest(new TestSuite(CancellableTaskTest.class));
240	<	suite.addTest(new TestSuite(ConcurrentHashMapTest.class));
241	<	suite.addTest(new TestSuite(ConcurrentLinkedQueueTest.class));
242	<	suite.addTest(new TestSuite(CopyOnWriteArrayListTest.class));
243	<	suite.addTest(new TestSuite(CopyOnWriteArraySetTest.class));
244	<	suite.addTest(new TestSuite(CountDownLatchTest.class));
245	<	suite.addTest(new TestSuite(CyclicBarrierTest.class));
246	<	suite.addTest(new TestSuite(DelayQueueTest.class));
247	<	suite.addTest(new TestSuite(ExchangerTest.class));
248	<	suite.addTest(new TestSuite(ExecutorsTest.class));
124	<	suite.addTest(new TestSuite(FairSemaphoreTest.class));
125	<	suite.addTest(new TestSuite(FutureTaskTest.class));
126	<	suite.addTest(new TestSuite(LinkedBlockingQueueTest.class));
127	<	suite.addTest(new TestSuite(LinkedListTest.class));
128	<	suite.addTest(new TestSuite(LockSupportTest.class));
129	<	suite.addTest(new TestSuite(PriorityBlockingQueueTest.class));
130	<	suite.addTest(new TestSuite(PriorityQueueTest.class));
131	<	suite.addTest(new TestSuite(ReentrantLockTest.class));
132	<	suite.addTest(new TestSuite(ReentrantReadWriteLockTest.class));
133	<	suite.addTest(new TestSuite(ScheduledExecutorTest.class));
134	<	suite.addTest(new TestSuite(SemaphoreTest.class));
135	<	suite.addTest(new TestSuite(SynchronousQueueTest.class));
136	<	suite.addTest(new TestSuite(SystemTest.class));
137	<	suite.addTest(new TestSuite(ThreadLocalTest.class));
138	<	suite.addTest(new TestSuite(ThreadPoolExecutorTest.class));
139	<	suite.addTest(new TestSuite(ThreadTest.class));
140	<	suite.addTest(new TestSuite(TimeUnitTest.class));
141	<
221	>	* Runs all unit tests in the given test suite.
222	>	* Actual behavior influenced by jsr166.* system properties.
223	>	*/
224	>	static void main(Test suite, String[] args) {
225	>	if (useSecurityManager) {
226	>	System.err.println("Setting a permissive security manager");
227	>	Policy.setPolicy(permissivePolicy());
228	>	System.setSecurityManager(new SecurityManager());
229	>	}
230	>	for (int i = 0; i < suiteRuns; i++) {
231	>	TestResult result = junit.textui.TestRunner.run(suite);
232	>	if (!result.wasSuccessful())
233	>	System.exit(1);
234	>	System.gc();
235	>	System.runFinalization();
236	>	}
237	>	}
238	>
239	>	public static TestSuite newTestSuite(Object... suiteOrClasses) {
240	>	TestSuite suite = new TestSuite();
241	>	for (Object suiteOrClass : suiteOrClasses) {
242	>	if (suiteOrClass instanceof TestSuite)
243	>	suite.addTest((TestSuite) suiteOrClass);
244	>	else if (suiteOrClass instanceof Class)
245	>	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
246	>	else
247	>	throw new ClassCastException("not a test suite or class");
248	>	}
249		return suite;
250		}
251
252	+	public static void addNamedTestClasses(TestSuite suite,
253	+	String... testClassNames) {
254	+	for (String testClassName : testClassNames) {
255	+	try {
256	+	Class<?> testClass = Class.forName(testClassName);
257	+	Method m = testClass.getDeclaredMethod("suite",
258	+	new Class<?>[0]);
259	+	suite.addTest(newTestSuite((Test)m.invoke(null)));
260	+	} catch (Exception e) {
261	+	throw new Error("Missing test class", e);
262	+	}
263	+	}
264	+	}
265	+
266	+	public static final double JAVA_CLASS_VERSION;
267	+	public static final String JAVA_SPECIFICATION_VERSION;
268	+	static {
269	+	try {
270	+	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
271	+	new java.security.PrivilegedAction<Double>() {
272	+	public Double run() {
273	+	return Double.valueOf(System.getProperty("java.class.version"));}});
274	+	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
275	+	new java.security.PrivilegedAction<String>() {
276	+	public String run() {
277	+	return System.getProperty("java.specification.version");}});
278	+	} catch (Throwable t) {
279	+	throw new Error(t);
280	+	}
281	+	}
282	+
283	+	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
284	+	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
285	+	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
286	+	public static boolean atLeastJava9() {
287	+	return JAVA_CLASS_VERSION >= 53.0
288	+	// As of 2015-09, java9 still uses 52.0 class file version
289	+	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?(9|[0-9][0-9])$");
290	+	}
291	+	public static boolean atLeastJava10() {
292	+	return JAVA_CLASS_VERSION >= 54.0
293	+	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?[0-9][0-9]$");
294	+	}
295	+
296	+	/**
297	+	* Collects all JSR166 unit tests as one suite.
298	+	*/
299	+	public static Test suite() {
300	+	// Java7+ test classes
301	+	TestSuite suite = newTestSuite(
302	+	ForkJoinPoolTest.suite(),
303	+	ForkJoinTaskTest.suite(),
304	+	RecursiveActionTest.suite(),
305	+	RecursiveTaskTest.suite(),
306	+	LinkedTransferQueueTest.suite(),
307	+	PhaserTest.suite(),
308	+	ThreadLocalRandomTest.suite(),
309	+	AbstractExecutorServiceTest.suite(),
310	+	AbstractQueueTest.suite(),
311	+	AbstractQueuedSynchronizerTest.suite(),
312	+	AbstractQueuedLongSynchronizerTest.suite(),
313	+	ArrayBlockingQueueTest.suite(),
314	+	ArrayDequeTest.suite(),
315	+	AtomicBooleanTest.suite(),
316	+	AtomicIntegerArrayTest.suite(),
317	+	AtomicIntegerFieldUpdaterTest.suite(),
318	+	AtomicIntegerTest.suite(),
319	+	AtomicLongArrayTest.suite(),
320	+	AtomicLongFieldUpdaterTest.suite(),
321	+	AtomicLongTest.suite(),
322	+	AtomicMarkableReferenceTest.suite(),
323	+	AtomicReferenceArrayTest.suite(),
324	+	AtomicReferenceFieldUpdaterTest.suite(),
325	+	AtomicReferenceTest.suite(),
326	+	AtomicStampedReferenceTest.suite(),
327	+	ConcurrentHashMapTest.suite(),
328	+	ConcurrentLinkedDequeTest.suite(),
329	+	ConcurrentLinkedQueueTest.suite(),
330	+	ConcurrentSkipListMapTest.suite(),
331	+	ConcurrentSkipListSubMapTest.suite(),
332	+	ConcurrentSkipListSetTest.suite(),
333	+	ConcurrentSkipListSubSetTest.suite(),
334	+	CopyOnWriteArrayListTest.suite(),
335	+	CopyOnWriteArraySetTest.suite(),
336	+	CountDownLatchTest.suite(),
337	+	CyclicBarrierTest.suite(),
338	+	DelayQueueTest.suite(),
339	+	EntryTest.suite(),
340	+	ExchangerTest.suite(),
341	+	ExecutorsTest.suite(),
342	+	ExecutorCompletionServiceTest.suite(),
343	+	FutureTaskTest.suite(),
344	+	LinkedBlockingDequeTest.suite(),
345	+	LinkedBlockingQueueTest.suite(),
346	+	LinkedListTest.suite(),
347	+	LockSupportTest.suite(),
348	+	PriorityBlockingQueueTest.suite(),
349	+	PriorityQueueTest.suite(),
350	+	ReentrantLockTest.suite(),
351	+	ReentrantReadWriteLockTest.suite(),
352	+	ScheduledExecutorTest.suite(),
353	+	ScheduledExecutorSubclassTest.suite(),
354	+	SemaphoreTest.suite(),
355	+	SynchronousQueueTest.suite(),
356	+	SystemTest.suite(),
357	+	ThreadLocalTest.suite(),
358	+	ThreadPoolExecutorTest.suite(),
359	+	ThreadPoolExecutorSubclassTest.suite(),
360	+	ThreadTest.suite(),
361	+	TimeUnitTest.suite(),
362	+	TreeMapTest.suite(),
363	+	TreeSetTest.suite(),
364	+	TreeSubMapTest.suite(),
365	+	TreeSubSetTest.suite());
366	+
367	+	// Java8+ test classes
368	+	if (atLeastJava8()) {
369	+	String[] java8TestClassNames = {
370	+	"Atomic8Test",
371	+	"CompletableFutureTest",
372	+	"ConcurrentHashMap8Test",
373	+	"CountedCompleterTest",
374	+	"DoubleAccumulatorTest",
375	+	"DoubleAdderTest",
376	+	"ForkJoinPool8Test",
377	+	"ForkJoinTask8Test",
378	+	"LongAccumulatorTest",
379	+	"LongAdderTest",
380	+	"SplittableRandomTest",
381	+	"StampedLockTest",
382	+	"SubmissionPublisherTest",
383	+	"ThreadLocalRandom8Test",
384	+	};
385	+	addNamedTestClasses(suite, java8TestClassNames);
386	+	}
387	+
388	+	// Java9+ test classes
389	+	if (atLeastJava9()) {
390	+	String[] java9TestClassNames = {
391	+	// Currently empty, but expecting varhandle tests
392	+	};
393	+	addNamedTestClasses(suite, java9TestClassNames);
394	+	}
395	+
396	+	return suite;
397	+	}
398	+
399	+	/** Returns list of junit-style test method names in given class. */
400	+	public static ArrayList<String> testMethodNames(Class<?> testClass) {
401	+	Method[] methods = testClass.getDeclaredMethods();
402	+	ArrayList<String> names = new ArrayList<String>(methods.length);
403	+	for (Method method : methods) {
404	+	if (method.getName().startsWith("test")
405	+	&& Modifier.isPublic(method.getModifiers())
406	+	// method.getParameterCount() requires jdk8+
407	+	&& method.getParameterTypes().length == 0) {
408	+	names.add(method.getName());
409	+	}
410	+	}
411	+	return names;
412	+	}
413	+
414	+	/**
415	+	* Returns junit-style testSuite for the given test class, but
416	+	* parameterized by passing extra data to each test.
417	+	*/
418	+	public static <ExtraData> Test parameterizedTestSuite
419	+	(Class<? extends JSR166TestCase> testClass,
420	+	Class<ExtraData> dataClass,
421	+	ExtraData data) {
422	+	try {
423	+	TestSuite suite = new TestSuite();
424	+	Constructor c =
425	+	testClass.getDeclaredConstructor(dataClass, String.class);
426	+	for (String methodName : testMethodNames(testClass))
427	+	suite.addTest((Test) c.newInstance(data, methodName));
428	+	return suite;
429	+	} catch (Exception e) {
430	+	throw new Error(e);
431	+	}
432	+	}
433	+
434	+	/**
435	+	* Returns junit-style testSuite for the jdk8 extension of the
436	+	* given test class, but parameterized by passing extra data to
437	+	* each test.  Uses reflection to allow compilation in jdk7.
438	+	*/
439	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
440	+	(Class<? extends JSR166TestCase> testClass,
441	+	Class<ExtraData> dataClass,
442	+	ExtraData data) {
443	+	if (atLeastJava8()) {
444	+	String name = testClass.getName();
445	+	String name8 = name.replaceAll("Test$", "8Test");
446	+	if (name.equals(name8)) throw new Error(name);
447	+	try {
448	+	return (Test)
449	+	Class.forName(name8)
450	+	.getMethod("testSuite", new Class[] { dataClass })
451	+	.invoke(null, data);
452	+	} catch (Exception e) {
453	+	throw new Error(e);
454	+	}
455	+	} else {
456	+	return new TestSuite();
457	+	}
458	+
459	+	}
460	+
461	+	// Delays for timing-dependent tests, in milliseconds.
462
463		public static long SHORT_DELAY_MS;
464		public static long SMALL_DELAY_MS;
465		public static long MEDIUM_DELAY_MS;
466		public static long LONG_DELAY_MS;
467
151	–
468		/**
469	<	* Return the shortest timed delay. This could
470	<	* be reimplmented to use for example a Property.
471	<	*/
469	>	* Returns the shortest timed delay. This could
470	>	* be reimplemented to use for example a Property.
471	>	*/
472		protected long getShortDelay() {
473	<	return 100;
473	>	return 50;
474		}
475
160	–
476		/**
477	<	* Set delays as multiples of SHORT_DELAY.
477	>	* Sets delays as multiples of SHORT_DELAY.
478		*/
479	<	protected  void setDelays() {
479	>	protected void setDelays() {
480		SHORT_DELAY_MS = getShortDelay();
481	<	SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
481	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
482		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
483	<	LONG_DELAY_MS = SHORT_DELAY_MS * 50;
483	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
484		}
485
486		/**
487	<	* Flag set true if any threadAssert methods fail
487	>	* Returns a timeout in milliseconds to be used in tests that
488	>	* verify that operations block or time out.
489		*/
490	<	volatile boolean threadFailed;
490	>	long timeoutMillis() {
491	>	return SHORT_DELAY_MS / 4;
492	>	}
493
494		/**
495	<	* Initialize test to indicate that no thread assertions have failed
495	>	* Returns a new Date instance representing a time at least
496	>	* delayMillis milliseconds in the future.
497		*/
498	<	public void setUp() {
498	>	Date delayedDate(long delayMillis) {
499	>	// Add 1 because currentTimeMillis is known to round into the past.
500	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
501	>	}
502	>
503	>	/**
504	>	* The first exception encountered if any threadAssertXXX method fails.
505	>	*/
506	>	private final AtomicReference<Throwable> threadFailure
507	>	= new AtomicReference<Throwable>(null);
508	>
509	>	/**
510	>	* Records an exception so that it can be rethrown later in the test
511	>	* harness thread, triggering a test case failure.  Only the first
512	>	* failure is recorded; subsequent calls to this method from within
513	>	* the same test have no effect.
514	>	*/
515	>	public void threadRecordFailure(Throwable t) {
516	>	threadFailure.compareAndSet(null, t);
517	>	}
518	>
519	>	public void setUp() {
520		setDelays();
181	–	threadFailed = false;
521		}
522
523		/**
524	<	* Trigger test case failure if any thread assertions have failed
524	>	* Extra checks that get done for all test cases.
525	>	*
526	>	* Triggers test case failure if any thread assertions have failed,
527	>	* by rethrowing, in the test harness thread, any exception recorded
528	>	* earlier by threadRecordFailure.
529	>	*
530	>	* Triggers test case failure if interrupt status is set in the main thread.
531	>	*/
532	>	public void tearDown() throws Exception {
533	>	Throwable t = threadFailure.getAndSet(null);
534	>	if (t != null) {
535	>	if (t instanceof Error)
536	>	throw (Error) t;
537	>	else if (t instanceof RuntimeException)
538	>	throw (RuntimeException) t;
539	>	else if (t instanceof Exception)
540	>	throw (Exception) t;
541	>	else {
542	>	AssertionFailedError afe =
543	>	new AssertionFailedError(t.toString());
544	>	afe.initCause(t);
545	>	throw afe;
546	>	}
547	>	}
548	>
549	>	if (Thread.interrupted())
550	>	throw new AssertionFailedError("interrupt status set in main thread");
551	>
552	>	checkForkJoinPoolThreadLeaks();
553	>	}
554	>
555	>	/**
556	>	* Finds missing try { ... } finally { joinPool(e); }
557		*/
558	<	public void tearDown() {
559	<	assertFalse(threadFailed);
558	>	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
559	>	Thread[] survivors = new Thread[5];
560	>	int count = Thread.enumerate(survivors);
561	>	for (int i = 0; i < count; i++) {
562	>	Thread thread = survivors[i];
563	>	String name = thread.getName();
564	>	if (name.startsWith("ForkJoinPool-")) {
565	>	// give thread some time to terminate
566	>	thread.join(LONG_DELAY_MS);
567	>	if (!thread.isAlive()) continue;
568	>	throw new AssertionFailedError
569	>	(String.format("Found leaked ForkJoinPool thread test=%s thread=%s%n",
570	>	toString(), name));
571	>	}
572	>	}
573		}
574
575		/**
576	<	* Fail, also setting status to indicate current testcase should fail
577	<	*/
576	>	* Just like fail(reason), but additionally recording (using
577	>	* threadRecordFailure) any AssertionFailedError thrown, so that
578	>	* the current testcase will fail.
579	>	*/
580		public void threadFail(String reason) {
581	<	threadFailed = true;
582	<	fail(reason);
581	>	try {
582	>	fail(reason);
583	>	} catch (AssertionFailedError t) {
584	>	threadRecordFailure(t);
585	>	fail(reason);
586	>	}
587		}
588
589		/**
590	<	* If expression not true, set status to indicate current testcase
591	<	* should fail
592	<	*/
590	>	* Just like assertTrue(b), but additionally recording (using
591	>	* threadRecordFailure) any AssertionFailedError thrown, so that
592	>	* the current testcase will fail.
593	>	*/
594		public void threadAssertTrue(boolean b) {
595	<	if (!b) {
205	<	threadFailed = true;
595	>	try {
596		assertTrue(b);
597	+	} catch (AssertionFailedError t) {
598	+	threadRecordFailure(t);
599	+	throw t;
600		}
601		}
602
603		/**
604	<	* If expression not false, set status to indicate current testcase
605	<	* should fail
606	<	*/
604	>	* Just like assertFalse(b), but additionally recording (using
605	>	* threadRecordFailure) any AssertionFailedError thrown, so that
606	>	* the current testcase will fail.
607	>	*/
608		public void threadAssertFalse(boolean b) {
609	<	if (b) {
216	<	threadFailed = true;
609	>	try {
610		assertFalse(b);
611	+	} catch (AssertionFailedError t) {
612	+	threadRecordFailure(t);
613	+	throw t;
614		}
615		}
616
617		/**
618	<	* If argument not null, set status to indicate current testcase
619	<	* should fail
620	<	*/
618	>	* Just like assertNull(x), but additionally recording (using
619	>	* threadRecordFailure) any AssertionFailedError thrown, so that
620	>	* the current testcase will fail.
621	>	*/
622		public void threadAssertNull(Object x) {
623	<	if (x != null) {
227	<	threadFailed = true;
623	>	try {
624		assertNull(x);
625	+	} catch (AssertionFailedError t) {
626	+	threadRecordFailure(t);
627	+	throw t;
628		}
629		}
630
631		/**
632	<	* If arguments not equal, set status to indicate current testcase
633	<	* should fail
634	<	*/
632	>	* Just like assertEquals(x, y), but additionally recording (using
633	>	* threadRecordFailure) any AssertionFailedError thrown, so that
634	>	* the current testcase will fail.
635	>	*/
636		public void threadAssertEquals(long x, long y) {
637	<	if (x != y) {
238	<	threadFailed = true;
637	>	try {
638		assertEquals(x, y);
639	+	} catch (AssertionFailedError t) {
640	+	threadRecordFailure(t);
641	+	throw t;
642		}
643		}
644
645		/**
646	<	* If arguments not equal, set status to indicate current testcase
647	<	* should fail
648	<	*/
646	>	* Just like assertEquals(x, y), but additionally recording (using
647	>	* threadRecordFailure) any AssertionFailedError thrown, so that
648	>	* the current testcase will fail.
649	>	*/
650		public void threadAssertEquals(Object x, Object y) {
651	<	if (x != y && (x == null || !x.equals(y))) {
249	<	threadFailed = true;
651	>	try {
652		assertEquals(x, y);
653	+	} catch (AssertionFailedError fail) {
654	+	threadRecordFailure(fail);
655	+	throw fail;
656	+	} catch (Throwable fail) {
657	+	threadUnexpectedException(fail);
658	+	}
659	+	}
660	+
661	+	/**
662	+	* Just like assertSame(x, y), but additionally recording (using
663	+	* threadRecordFailure) any AssertionFailedError thrown, so that
664	+	* the current testcase will fail.
665	+	*/
666	+	public void threadAssertSame(Object x, Object y) {
667	+	try {
668	+	assertSame(x, y);
669	+	} catch (AssertionFailedError fail) {
670	+	threadRecordFailure(fail);
671	+	throw fail;
672		}
673		}
674
675		/**
676	<	* threadFail with message "should throw exception"
677	<	*/
676	>	* Calls threadFail with message "should throw exception".
677	>	*/
678		public void threadShouldThrow() {
679	<	threadFailed = true;
680	<	fail("should throw exception");
679	>	threadFail("should throw exception");
680	>	}
681	>
682	>	/**
683	>	* Calls threadFail with message "should throw" + exceptionName.
684	>	*/
685	>	public void threadShouldThrow(String exceptionName) {
686	>	threadFail("should throw " + exceptionName);
687	>	}
688	>
689	>	/**
690	>	* Records the given exception using {@link #threadRecordFailure},
691	>	* then rethrows the exception, wrapping it in an
692	>	* AssertionFailedError if necessary.
693	>	*/
694	>	public void threadUnexpectedException(Throwable t) {
695	>	threadRecordFailure(t);
696	>	t.printStackTrace();
697	>	if (t instanceof RuntimeException)
698	>	throw (RuntimeException) t;
699	>	else if (t instanceof Error)
700	>	throw (Error) t;
701	>	else {
702	>	AssertionFailedError afe =
703	>	new AssertionFailedError("unexpected exception: " + t);
704	>	afe.initCause(t);
705	>	throw afe;
706	>	}
707	>	}
708	>
709	>	/**
710	>	* Delays, via Thread.sleep, for the given millisecond delay, but
711	>	* if the sleep is shorter than specified, may re-sleep or yield
712	>	* until time elapses.
713	>	*/
714	>	static void delay(long millis) throws InterruptedException {
715	>	long startTime = System.nanoTime();
716	>	long ns = millis * 1000 * 1000;
717	>	for (;;) {
718	>	if (millis > 0L)
719	>	Thread.sleep(millis);
720	>	else // too short to sleep
721	>	Thread.yield();
722	>	long d = ns - (System.nanoTime() - startTime);
723	>	if (d > 0L)
724	>	millis = d / (1000 * 1000);
725	>	else
726	>	break;
727	>	}
728		}
729
730		/**
731	<	* threadFail with message "Unexpected exception"
731	>	* Waits out termination of a thread pool or fails doing so.
732		*/
733	<	public void threadUnexpectedException() {
734	<	threadFailed = true;
735	<	fail("Unexpected exception");
733	>	void joinPool(ExecutorService pool) {
734	>	try {
735	>	pool.shutdown();
736	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS))
737	>	fail("ExecutorService " + pool +
738	>	" did not terminate in a timely manner");
739	>	} catch (SecurityException ok) {
740	>	// Allowed in case test doesn't have privs
741	>	} catch (InterruptedException fail) {
742	>	fail("Unexpected InterruptedException");
743	>	}
744		}
745
746	+	/** Like Runnable, but with the freedom to throw anything */
747	+	interface Action { public void run() throws Throwable; }
748
749		/**
750	<	* Wait out termination of a thread pool or fail doing so
750	>	* Runs all the given actions in parallel, failing if any fail.
751	>	* Useful for running multiple variants of tests that are
752	>	* necessarily individually slow because they must block.
753		*/
754	<	public void joinPool(ExecutorService exec) {
754	>	void testInParallel(Action ... actions) {
755	>	ExecutorService pool = Executors.newCachedThreadPool();
756		try {
757	<	exec.shutdown();
758	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
759	<	} catch(InterruptedException ie) {
760	<	fail("Unexpected exception");
757	>	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
758	>	for (final Action action : actions)
759	>	futures.add(pool.submit(new CheckedRunnable() {
760	>	public void realRun() throws Throwable { action.run();}}));
761	>	for (Future<?> future : futures)
762	>	try {
763	>	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
764	>	} catch (ExecutionException ex) {
765	>	threadUnexpectedException(ex.getCause());
766	>	} catch (Exception ex) {
767	>	threadUnexpectedException(ex);
768	>	}
769	>	} finally {
770	>	joinPool(pool);
771		}
772		}
773
774	+	/**
775	+	* A debugging tool to print all stack traces, as jstack does.
776	+	*/
777	+	static void printAllStackTraces() {
778	+	for (ThreadInfo info :
779	+	ManagementFactory.getThreadMXBean()
780	+	.dumpAllThreads(true, true))
781	+	System.err.print(info);
782	+	}
783
784		/**
785	<	* fail with message "should throw exception"
786	<	*/
785	>	* Checks that thread does not terminate within the default
786	>	* millisecond delay of {@code timeoutMillis()}.
787	>	*/
788	>	void assertThreadStaysAlive(Thread thread) {
789	>	assertThreadStaysAlive(thread, timeoutMillis());
790	>	}
791	>
792	>	/**
793	>	* Checks that thread does not terminate within the given millisecond delay.
794	>	*/
795	>	void assertThreadStaysAlive(Thread thread, long millis) {
796	>	try {
797	>	// No need to optimize the failing case via Thread.join.
798	>	delay(millis);
799	>	assertTrue(thread.isAlive());
800	>	} catch (InterruptedException fail) {
801	>	fail("Unexpected InterruptedException");
802	>	}
803	>	}
804	>
805	>	/**
806	>	* Checks that the threads do not terminate within the default
807	>	* millisecond delay of {@code timeoutMillis()}.
808	>	*/
809	>	void assertThreadsStayAlive(Thread... threads) {
810	>	assertThreadsStayAlive(timeoutMillis(), threads);
811	>	}
812	>
813	>	/**
814	>	* Checks that the threads do not terminate within the given millisecond delay.
815	>	*/
816	>	void assertThreadsStayAlive(long millis, Thread... threads) {
817	>	try {
818	>	// No need to optimize the failing case via Thread.join.
819	>	delay(millis);
820	>	for (Thread thread : threads)
821	>	assertTrue(thread.isAlive());
822	>	} catch (InterruptedException fail) {
823	>	fail("Unexpected InterruptedException");
824	>	}
825	>	}
826	>
827	>	/**
828	>	* Checks that future.get times out, with the default timeout of
829	>	* {@code timeoutMillis()}.
830	>	*/
831	>	void assertFutureTimesOut(Future future) {
832	>	assertFutureTimesOut(future, timeoutMillis());
833	>	}
834	>
835	>	/**
836	>	* Checks that future.get times out, with the given millisecond timeout.
837	>	*/
838	>	void assertFutureTimesOut(Future future, long timeoutMillis) {
839	>	long startTime = System.nanoTime();
840	>	try {
841	>	future.get(timeoutMillis, MILLISECONDS);
842	>	shouldThrow();
843	>	} catch (TimeoutException success) {
844	>	} catch (Exception fail) {
845	>	threadUnexpectedException(fail);
846	>	} finally { future.cancel(true); }
847	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
848	>	}
849	>
850	>	/**
851	>	* Fails with message "should throw exception".
852	>	*/
853		public void shouldThrow() {
854		fail("Should throw exception");
855		}
856
857		/**
858	<	* fail with message "Unexpected exception"
858	>	* Fails with message "should throw " + exceptionName.
859		*/
860	<	public void unexpectedException() {
861	<	fail("Unexpected exception");
860	>	public void shouldThrow(String exceptionName) {
861	>	fail("Should throw " + exceptionName);
862		}
863
298	–
864		/**
865		* The number of elements to place in collections, arrays, etc.
866		*/
867	<	static final int SIZE = 20;
867	>	public static final int SIZE = 20;
868
869		// Some convenient Integer constants
870
871	<	static final Integer zero = new Integer(0);
872	<	static final Integer one = new Integer(1);
873	<	static final Integer two = new Integer(2);
874	<	static final Integer three  = new Integer(3);
875	<	static final Integer four  = new Integer(4);
876	<	static final Integer five  = new Integer(5);
877	<	static final Integer six = new Integer(6);
878	<	static final Integer seven = new Integer(7);
879	<	static final Integer eight = new Integer(8);
880	<	static final Integer nine = new Integer(9);
881	<	static final Integer m1  = new Integer(-1);
882	<	static final Integer m2  = new Integer(-2);
883	<	static final Integer m3  = new Integer(-3);
884	<	static final Integer m4 = new Integer(-4);
885	<	static final Integer m5 = new Integer(-5);
886	<	static final Integer m10 = new Integer(-10);
871	>	public static final Integer zero  = new Integer(0);
872	>	public static final Integer one   = new Integer(1);
873	>	public static final Integer two   = new Integer(2);
874	>	public static final Integer three = new Integer(3);
875	>	public static final Integer four  = new Integer(4);
876	>	public static final Integer five  = new Integer(5);
877	>	public static final Integer six   = new Integer(6);
878	>	public static final Integer seven = new Integer(7);
879	>	public static final Integer eight = new Integer(8);
880	>	public static final Integer nine  = new Integer(9);
881	>	public static final Integer m1  = new Integer(-1);
882	>	public static final Integer m2  = new Integer(-2);
883	>	public static final Integer m3  = new Integer(-3);
884	>	public static final Integer m4  = new Integer(-4);
885	>	public static final Integer m5  = new Integer(-5);
886	>	public static final Integer m6  = new Integer(-6);
887	>	public static final Integer m10 = new Integer(-10);
888	>
889	>	/**
890	>	* Runs Runnable r with a security policy that permits precisely
891	>	* the specified permissions.  If there is no current security
892	>	* manager, the runnable is run twice, both with and without a
893	>	* security manager.  We require that any security manager permit
894	>	* getPolicy/setPolicy.
895	>	*/
896	>	public void runWithPermissions(Runnable r, Permission... permissions) {
897	>	SecurityManager sm = System.getSecurityManager();
898	>	if (sm == null) {
899	>	r.run();
900	>	}
901	>	runWithSecurityManagerWithPermissions(r, permissions);
902	>	}
903
904	+	/**
905	+	* Runs Runnable r with a security policy that permits precisely
906	+	* the specified permissions.  If there is no current security
907	+	* manager, a temporary one is set for the duration of the
908	+	* Runnable.  We require that any security manager permit
909	+	* getPolicy/setPolicy.
910	+	*/
911	+	public void runWithSecurityManagerWithPermissions(Runnable r,
912	+	Permission... permissions) {
913	+	SecurityManager sm = System.getSecurityManager();
914	+	if (sm == null) {
915	+	Policy savedPolicy = Policy.getPolicy();
916	+	try {
917	+	Policy.setPolicy(permissivePolicy());
918	+	System.setSecurityManager(new SecurityManager());
919	+	runWithSecurityManagerWithPermissions(r, permissions);
920	+	} finally {
921	+	System.setSecurityManager(null);
922	+	Policy.setPolicy(savedPolicy);
923	+	}
924	+	} else {
925	+	Policy savedPolicy = Policy.getPolicy();
926	+	AdjustablePolicy policy = new AdjustablePolicy(permissions);
927	+	Policy.setPolicy(policy);
928
929	<	// Some convenient Runnable classes
929	>	try {
930	>	r.run();
931	>	} finally {
932	>	policy.addPermission(new SecurityPermission("setPolicy"));
933	>	Policy.setPolicy(savedPolicy);
934	>	}
935	>	}
936	>	}
937
938	<	static class NoOpRunnable implements Runnable {
939	<	public void run() {}
938	>	/**
939	>	* Runs a runnable without any permissions.
940	>	*/
941	>	public void runWithoutPermissions(Runnable r) {
942	>	runWithPermissions(r);
943		}
944
945	<	static class NoOpCallable implements Callable {
946	<	public Object call() { return Boolean.TRUE; }
945	>	/**
946	>	* A security policy where new permissions can be dynamically added
947	>	* or all cleared.
948	>	*/
949	>	public static class AdjustablePolicy extends java.security.Policy {
950	>	Permissions perms = new Permissions();
951	>	AdjustablePolicy(Permission... permissions) {
952	>	for (Permission permission : permissions)
953	>	perms.add(permission);
954	>	}
955	>	void addPermission(Permission perm) { perms.add(perm); }
956	>	void clearPermissions() { perms = new Permissions(); }
957	>	public PermissionCollection getPermissions(CodeSource cs) {
958	>	return perms;
959	>	}
960	>	public PermissionCollection getPermissions(ProtectionDomain pd) {
961	>	return perms;
962	>	}
963	>	public boolean implies(ProtectionDomain pd, Permission p) {
964	>	return perms.implies(p);
965	>	}
966	>	public void refresh() {}
967	>	public String toString() {
968	>	List<Permission> ps = new ArrayList<Permission>();
969	>	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
970	>	ps.add(e.nextElement());
971	>	return "AdjustablePolicy with permissions " + ps;
972	>	}
973		}
974
975	<	class ShortRunnable implements Runnable {
976	<	public void run() {
977	<	try {
978	<	Thread.sleep(SHORT_DELAY_MS);
975	>	/**
976	>	* Returns a policy containing all the permissions we ever need.
977	>	*/
978	>	public static Policy permissivePolicy() {
979	>	return new AdjustablePolicy
980	>	// Permissions j.u.c. needs directly
981	>	(new RuntimePermission("modifyThread"),
982	>	new RuntimePermission("getClassLoader"),
983	>	new RuntimePermission("setContextClassLoader"),
984	>	// Permissions needed to change permissions!
985	>	new SecurityPermission("getPolicy"),
986	>	new SecurityPermission("setPolicy"),
987	>	new RuntimePermission("setSecurityManager"),
988	>	// Permissions needed by the junit test harness
989	>	new RuntimePermission("accessDeclaredMembers"),
990	>	new PropertyPermission("*", "read"),
991	>	new java.io.FilePermission("<<ALL FILES>>", "read"));
992	>	}
993	>
994	>	/**
995	>	* Sleeps until the given time has elapsed.
996	>	* Throws AssertionFailedError if interrupted.
997	>	*/
998	>	void sleep(long millis) {
999	>	try {
1000	>	delay(millis);
1001	>	} catch (InterruptedException fail) {
1002	>	AssertionFailedError afe =
1003	>	new AssertionFailedError("Unexpected InterruptedException");
1004	>	afe.initCause(fail);
1005	>	throw afe;
1006	>	}
1007	>	}
1008	>
1009	>	/**
1010	>	* Spin-waits up to the specified number of milliseconds for the given
1011	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1012	>	*/
1013	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1014	>	long startTime = System.nanoTime();
1015	>	for (;;) {
1016	>	Thread.State s = thread.getState();
1017	>	if (s == Thread.State.BLOCKED ||
1018	>	s == Thread.State.WAITING ||
1019	>	s == Thread.State.TIMED_WAITING)
1020	>	return;
1021	>	else if (s == Thread.State.TERMINATED)
1022	>	fail("Unexpected thread termination");
1023	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1024	>	threadAssertTrue(thread.isAlive());
1025	>	return;
1026		}
1027	<	catch(Exception e) {
1028	<	threadUnexpectedException();
1027	>	Thread.yield();
1028	>	}
1029	>	}
1030	>
1031	>	/**
1032	>	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
1033	>	* state: BLOCKED, WAITING, or TIMED_WAITING.
1034	>	*/
1035	>	void waitForThreadToEnterWaitState(Thread thread) {
1036	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
1037	>	}
1038	>
1039	>	/**
1040	>	* Returns the number of milliseconds since time given by
1041	>	* startNanoTime, which must have been previously returned from a
1042	>	* call to {@link System#nanoTime()}.
1043	>	*/
1044	>	static long millisElapsedSince(long startNanoTime) {
1045	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1046	>	}
1047	>
1048	>	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1049	>	//         long startTime = System.nanoTime();
1050	>	//         try {
1051	>	//             r.run();
1052	>	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1053	>	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1054	>	//             throw new AssertionFailedError("did not return promptly");
1055	>	//     }
1056	>
1057	>	//     void assertTerminatesPromptly(Runnable r) {
1058	>	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1059	>	//     }
1060	>
1061	>	/**
1062	>	* Checks that timed f.get() returns the expected value, and does not
1063	>	* wait for the timeout to elapse before returning.
1064	>	*/
1065	>	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1066	>	long startTime = System.nanoTime();
1067	>	try {
1068	>	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1069	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1070	>	if (millisElapsedSince(startTime) > timeoutMillis/2)
1071	>	throw new AssertionFailedError("timed get did not return promptly");
1072	>	}
1073	>
1074	>	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1075	>	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1076	>	}
1077	>
1078	>	/**
1079	>	* Returns a new started daemon Thread running the given runnable.
1080	>	*/
1081	>	Thread newStartedThread(Runnable runnable) {
1082	>	Thread t = new Thread(runnable);
1083	>	t.setDaemon(true);
1084	>	t.start();
1085	>	return t;
1086	>	}
1087	>
1088	>	/**
1089	>	* Waits for the specified time (in milliseconds) for the thread
1090	>	* to terminate (using {@link Thread#join(long)}), else interrupts
1091	>	* the thread (in the hope that it may terminate later) and fails.
1092	>	*/
1093	>	void awaitTermination(Thread t, long timeoutMillis) {
1094	>	try {
1095	>	t.join(timeoutMillis);
1096	>	} catch (InterruptedException fail) {
1097	>	threadUnexpectedException(fail);
1098	>	} finally {
1099	>	if (t.getState() != Thread.State.TERMINATED) {
1100	>	t.interrupt();
1101	>	fail("Test timed out");
1102		}
1103		}
1104		}
1105
1106	<	class ShortInterruptedRunnable implements Runnable {
1107	<	public void run() {
1106	>	/**
1107	>	* Waits for LONG_DELAY_MS milliseconds for the thread to
1108	>	* terminate (using {@link Thread#join(long)}), else interrupts
1109	>	* the thread (in the hope that it may terminate later) and fails.
1110	>	*/
1111	>	void awaitTermination(Thread t) {
1112	>	awaitTermination(t, LONG_DELAY_MS);
1113	>	}
1114	>
1115	>	// Some convenient Runnable classes
1116	>
1117	>	public abstract class CheckedRunnable implements Runnable {
1118	>	protected abstract void realRun() throws Throwable;
1119	>
1120	>	public final void run() {
1121		try {
1122	<	Thread.sleep(SHORT_DELAY_MS);
1123	<	threadShouldThrow();
1124	<	}
351	<	catch(InterruptedException success) {
1122	>	realRun();
1123	>	} catch (Throwable fail) {
1124	>	threadUnexpectedException(fail);
1125		}
1126		}
1127		}
1128
1129	<	class SmallRunnable implements Runnable {
1130	<	public void run() {
1129	>	public abstract class RunnableShouldThrow implements Runnable {
1130	>	protected abstract void realRun() throws Throwable;
1131	>
1132	>	final Class<?> exceptionClass;
1133	>
1134	>	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
1135	>	this.exceptionClass = exceptionClass;
1136	>	}
1137	>
1138	>	public final void run() {
1139		try {
1140	<	Thread.sleep(SMALL_DELAY_MS);
1141	<	}
1142	<	catch(Exception e) {
1143	<	threadUnexpectedException();
1140	>	realRun();
1141	>	threadShouldThrow(exceptionClass.getSimpleName());
1142	>	} catch (Throwable t) {
1143	>	if (! exceptionClass.isInstance(t))
1144	>	threadUnexpectedException(t);
1145		}
1146		}
1147		}
1148
1149	<	class SmallPossiblyInterruptedRunnable implements Runnable {
1150	<	public void run() {
1149	>	public abstract class ThreadShouldThrow extends Thread {
1150	>	protected abstract void realRun() throws Throwable;
1151	>
1152	>	final Class<?> exceptionClass;
1153	>
1154	>	<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) {
1155	>	this.exceptionClass = exceptionClass;
1156	>	}
1157	>
1158	>	public final void run() {
1159		try {
1160	<	Thread.sleep(SMALL_DELAY_MS);
1161	<	}
1162	<	catch(Exception e) {
1160	>	realRun();
1161	>	threadShouldThrow(exceptionClass.getSimpleName());
1162	>	} catch (Throwable t) {
1163	>	if (! exceptionClass.isInstance(t))
1164	>	threadUnexpectedException(t);
1165		}
1166		}
1167		}
1168
1169	<	class SmallCallable implements Callable {
1170	<	public Object call() {
1169	>	public abstract class CheckedInterruptedRunnable implements Runnable {
1170	>	protected abstract void realRun() throws Throwable;
1171	>
1172	>	public final void run() {
1173		try {
1174	<	Thread.sleep(SMALL_DELAY_MS);
1174	>	realRun();
1175	>	threadShouldThrow("InterruptedException");
1176	>	} catch (InterruptedException success) {
1177	>	threadAssertFalse(Thread.interrupted());
1178	>	} catch (Throwable fail) {
1179	>	threadUnexpectedException(fail);
1180		}
382	–	catch(Exception e) {
383	–	threadUnexpectedException();
384	–	}
385	–	return Boolean.TRUE;
1181		}
1182		}
1183
1184	<	class SmallInterruptedRunnable implements Runnable {
1185	<	public void run() {
1184	>	public abstract class CheckedCallable<T> implements Callable<T> {
1185	>	protected abstract T realCall() throws Throwable;
1186	>
1187	>	public final T call() {
1188		try {
1189	<	Thread.sleep(SMALL_DELAY_MS);
1190	<	threadShouldThrow();
1191	<	}
1192	<	catch(InterruptedException success) {
1189	>	return realCall();
1190	>	} catch (Throwable fail) {
1191	>	threadUnexpectedException(fail);
1192	>	return null;
1193		}
1194		}
1195		}
1196
1197	+	public abstract class CheckedInterruptedCallable<T>
1198	+	implements Callable<T> {
1199	+	protected abstract T realCall() throws Throwable;
1200
1201	<	class MediumRunnable implements Runnable {
402	<	public void run() {
1201	>	public final T call() {
1202		try {
1203	<	Thread.sleep(MEDIUM_DELAY_MS);
1204	<	}
1205	<	catch(Exception e) {
1206	<	threadUnexpectedException();
1203	>	T result = realCall();
1204	>	threadShouldThrow("InterruptedException");
1205	>	return result;
1206	>	} catch (InterruptedException success) {
1207	>	threadAssertFalse(Thread.interrupted());
1208	>	} catch (Throwable fail) {
1209	>	threadUnexpectedException(fail);
1210		}
1211	+	return null;
1212		}
1213		}
1214
1215	<	class MediumInterruptedRunnable implements Runnable {
1216	<	public void run() {
1215	>	public static class NoOpRunnable implements Runnable {
1216	>	public void run() {}
1217	>	}
1218	>
1219	>	public static class NoOpCallable implements Callable {
1220	>	public Object call() { return Boolean.TRUE; }
1221	>	}
1222	>
1223	>	public static final String TEST_STRING = "a test string";
1224	>
1225	>	public static class StringTask implements Callable<String> {
1226	>	final String value;
1227	>	public StringTask() { this(TEST_STRING); }
1228	>	public StringTask(String value) { this.value = value; }
1229	>	public String call() { return value; }
1230	>	}
1231	>
1232	>	public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1233	>	return new CheckedCallable<String>() {
1234	>	protected String realCall() {
1235	>	try {
1236	>	latch.await();
1237	>	} catch (InterruptedException quittingTime) {}
1238	>	return TEST_STRING;
1239	>	}};
1240	>	}
1241	>
1242	>	public Runnable awaiter(final CountDownLatch latch) {
1243	>	return new CheckedRunnable() {
1244	>	public void realRun() throws InterruptedException {
1245	>	await(latch);
1246	>	}};
1247	>	}
1248	>
1249	>	public void await(CountDownLatch latch) {
1250	>	try {
1251	>	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1252	>	} catch (Throwable fail) {
1253	>	threadUnexpectedException(fail);
1254	>	}
1255	>	}
1256	>
1257	>	public void await(Semaphore semaphore) {
1258	>	try {
1259	>	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1260	>	} catch (Throwable fail) {
1261	>	threadUnexpectedException(fail);
1262	>	}
1263	>	}
1264	>
1265	>	//     /**
1266	>	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1267	>	//      */
1268	>	//     public void await(AtomicBoolean flag) {
1269	>	//         await(flag, LONG_DELAY_MS);
1270	>	//     }
1271	>
1272	>	//     /**
1273	>	//      * Spin-waits up to the specified timeout until flag becomes true.
1274	>	//      */
1275	>	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1276	>	//         long startTime = System.nanoTime();
1277	>	//         while (!flag.get()) {
1278	>	//             if (millisElapsedSince(startTime) > timeoutMillis)
1279	>	//                 throw new AssertionFailedError("timed out");
1280	>	//             Thread.yield();
1281	>	//         }
1282	>	//     }
1283	>
1284	>	public static class NPETask implements Callable<String> {
1285	>	public String call() { throw new NullPointerException(); }
1286	>	}
1287	>
1288	>	public static class CallableOne implements Callable<Integer> {
1289	>	public Integer call() { return one; }
1290	>	}
1291	>
1292	>	public class ShortRunnable extends CheckedRunnable {
1293	>	protected void realRun() throws Throwable {
1294	>	delay(SHORT_DELAY_MS);
1295	>	}
1296	>	}
1297	>
1298	>	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1299	>	protected void realRun() throws InterruptedException {
1300	>	delay(SHORT_DELAY_MS);
1301	>	}
1302	>	}
1303	>
1304	>	public class SmallRunnable extends CheckedRunnable {
1305	>	protected void realRun() throws Throwable {
1306	>	delay(SMALL_DELAY_MS);
1307	>	}
1308	>	}
1309	>
1310	>	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1311	>	protected void realRun() {
1312		try {
1313	<	Thread.sleep(MEDIUM_DELAY_MS);
1314	<	threadShouldThrow();
417	<	}
418	<	catch(InterruptedException success) {
419	<	}
1313	>	delay(SMALL_DELAY_MS);
1314	>	} catch (InterruptedException ok) {}
1315		}
1316		}
1317
1318	<	class MediumPossiblyInterruptedRunnable implements Runnable {
1319	<	public void run() {
1318	>	public class SmallCallable extends CheckedCallable {
1319	>	protected Object realCall() throws InterruptedException {
1320	>	delay(SMALL_DELAY_MS);
1321	>	return Boolean.TRUE;
1322	>	}
1323	>	}
1324	>
1325	>	public class MediumRunnable extends CheckedRunnable {
1326	>	protected void realRun() throws Throwable {
1327	>	delay(MEDIUM_DELAY_MS);
1328	>	}
1329	>	}
1330	>
1331	>	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1332	>	protected void realRun() throws InterruptedException {
1333	>	delay(MEDIUM_DELAY_MS);
1334	>	}
1335	>	}
1336	>
1337	>	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1338	>	return new CheckedRunnable() {
1339	>	protected void realRun() {
1340	>	try {
1341	>	delay(timeoutMillis);
1342	>	} catch (InterruptedException ok) {}
1343	>	}};
1344	>	}
1345	>
1346	>	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1347	>	protected void realRun() {
1348		try {
1349	<	Thread.sleep(MEDIUM_DELAY_MS);
1350	<	}
1351	<	catch(InterruptedException success) {
1352	<	}
1349	>	delay(MEDIUM_DELAY_MS);
1350	>	} catch (InterruptedException ok) {}
1351	>	}
1352	>	}
1353	>
1354	>	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1355	>	protected void realRun() {
1356	>	try {
1357	>	delay(LONG_DELAY_MS);
1358	>	} catch (InterruptedException ok) {}
1359		}
1360		}
1361
1362		/**
1363		* For use as ThreadFactory in constructors
1364		*/
1365	<	static class SimpleThreadFactory implements ThreadFactory{
1366	<	public Thread newThread(Runnable r){
1365	>	public static class SimpleThreadFactory implements ThreadFactory {
1366	>	public Thread newThread(Runnable r) {
1367		return new Thread(r);
1368	<	}
1368	>	}
1369	>	}
1370	>
1371	>	public interface TrackedRunnable extends Runnable {
1372	>	boolean isDone();
1373		}
1374
1375	<	static class TrackedShortRunnable implements Runnable {
1376	<	volatile boolean done = false;
1375	>	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1376	>	return new TrackedRunnable() {
1377	>	private volatile boolean done = false;
1378	>	public boolean isDone() { return done; }
1379	>	public void run() {
1380	>	try {
1381	>	delay(timeoutMillis);
1382	>	done = true;
1383	>	} catch (InterruptedException ok) {}
1384	>	}
1385	>	};
1386	>	}
1387	>
1388	>	public static class TrackedShortRunnable implements Runnable {
1389	>	public volatile boolean done = false;
1390		public void run() {
1391		try {
1392	<	Thread.sleep(SMALL_DELAY_MS);
1392	>	delay(SHORT_DELAY_MS);
1393		done = true;
1394	<	} catch(Exception e){
449	<	}
1394	>	} catch (InterruptedException ok) {}
1395		}
1396		}
1397
1398	<	static class TrackedMediumRunnable implements Runnable {
1399	<	volatile boolean done = false;
1398	>	public static class TrackedSmallRunnable implements Runnable {
1399	>	public volatile boolean done = false;
1400		public void run() {
1401		try {
1402	<	Thread.sleep(MEDIUM_DELAY_MS);
1402	>	delay(SMALL_DELAY_MS);
1403		done = true;
1404	<	} catch(Exception e){
460	<	}
1404	>	} catch (InterruptedException ok) {}
1405		}
1406		}
1407
1408	<	static class TrackedLongRunnable implements Runnable {
1409	<	volatile boolean done = false;
1408	>	public static class TrackedMediumRunnable implements Runnable {
1409	>	public volatile boolean done = false;
1410		public void run() {
1411		try {
1412	<	Thread.sleep(LONG_DELAY_MS);
1412	>	delay(MEDIUM_DELAY_MS);
1413		done = true;
1414	<	} catch(Exception e){
471	<	}
1414	>	} catch (InterruptedException ok) {}
1415		}
1416		}
1417
1418	<	static class TrackedNoOpRunnable implements Runnable {
1419	<	volatile boolean done = false;
1418	>	public static class TrackedLongRunnable implements Runnable {
1419	>	public volatile boolean done = false;
1420	>	public void run() {
1421	>	try {
1422	>	delay(LONG_DELAY_MS);
1423	>	done = true;
1424	>	} catch (InterruptedException ok) {}
1425	>	}
1426	>	}
1427	>
1428	>	public static class TrackedNoOpRunnable implements Runnable {
1429	>	public volatile boolean done = false;
1430		public void run() {
1431		done = true;
1432		}
1433		}
1434
1435	<	static class TrackedCallable implements Callable {
1436	<	volatile boolean done = false;
1435	>	public static class TrackedCallable implements Callable {
1436	>	public volatile boolean done = false;
1437		public Object call() {
1438		try {
1439	<	Thread.sleep(SMALL_DELAY_MS);
1439	>	delay(SMALL_DELAY_MS);
1440		done = true;
1441	<	} catch(Exception e){
489	<	}
1441	>	} catch (InterruptedException ok) {}
1442		return Boolean.TRUE;
1443		}
1444		}
1445
1446		/**
1447	+	* Analog of CheckedRunnable for RecursiveAction
1448	+	*/
1449	+	public abstract class CheckedRecursiveAction extends RecursiveAction {
1450	+	protected abstract void realCompute() throws Throwable;
1451	+
1452	+	@Override protected final void compute() {
1453	+	try {
1454	+	realCompute();
1455	+	} catch (Throwable fail) {
1456	+	threadUnexpectedException(fail);
1457	+	}
1458	+	}
1459	+	}
1460	+
1461	+	/**
1462	+	* Analog of CheckedCallable for RecursiveTask
1463	+	*/
1464	+	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1465	+	protected abstract T realCompute() throws Throwable;
1466	+
1467	+	@Override protected final T compute() {
1468	+	try {
1469	+	return realCompute();
1470	+	} catch (Throwable fail) {
1471	+	threadUnexpectedException(fail);
1472	+	return null;
1473	+	}
1474	+	}
1475	+	}
1476	+
1477	+	/**
1478		* For use as RejectedExecutionHandler in constructors
1479		*/
1480	<	static class NoOpREHandler implements RejectedExecutionHandler{
1481	<	public void rejectedExecution(Runnable r, ThreadPoolExecutor executor){}
1480	>	public static class NoOpREHandler implements RejectedExecutionHandler {
1481	>	public void rejectedExecution(Runnable r,
1482	>	ThreadPoolExecutor executor) {}
1483	>	}
1484	>
1485	>	/**
1486	>	* A CyclicBarrier that uses timed await and fails with
1487	>	* AssertionFailedErrors instead of throwing checked exceptions.
1488	>	*/
1489	>	public class CheckedBarrier extends CyclicBarrier {
1490	>	public CheckedBarrier(int parties) { super(parties); }
1491	>
1492	>	public int await() {
1493	>	try {
1494	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1495	>	} catch (TimeoutException timedOut) {
1496	>	throw new AssertionFailedError("timed out");
1497	>	} catch (Exception fail) {
1498	>	AssertionFailedError afe =
1499	>	new AssertionFailedError("Unexpected exception: " + fail);
1500	>	afe.initCause(fail);
1501	>	throw afe;
1502	>	}
1503	>	}
1504	>	}
1505	>
1506	>	void checkEmpty(BlockingQueue q) {
1507	>	try {
1508	>	assertTrue(q.isEmpty());
1509	>	assertEquals(0, q.size());
1510	>	assertNull(q.peek());
1511	>	assertNull(q.poll());
1512	>	assertNull(q.poll(0, MILLISECONDS));
1513	>	assertEquals(q.toString(), "[]");
1514	>	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1515	>	assertFalse(q.iterator().hasNext());
1516	>	try {
1517	>	q.element();
1518	>	shouldThrow();
1519	>	} catch (NoSuchElementException success) {}
1520	>	try {
1521	>	q.iterator().next();
1522	>	shouldThrow();
1523	>	} catch (NoSuchElementException success) {}
1524	>	try {
1525	>	q.remove();
1526	>	shouldThrow();
1527	>	} catch (NoSuchElementException success) {}
1528	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1529	>	}
1530	>
1531	>	void assertSerialEquals(Object x, Object y) {
1532	>	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1533	>	}
1534	>
1535	>	void assertNotSerialEquals(Object x, Object y) {
1536	>	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1537	>	}
1538	>
1539	>	byte[] serialBytes(Object o) {
1540	>	try {
1541	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1542	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1543	>	oos.writeObject(o);
1544	>	oos.flush();
1545	>	oos.close();
1546	>	return bos.toByteArray();
1547	>	} catch (Throwable fail) {
1548	>	threadUnexpectedException(fail);
1549	>	return new byte[0];
1550	>	}
1551	>	}
1552	>
1553	>	@SuppressWarnings("unchecked")
1554	>	<T> T serialClone(T o) {
1555	>	try {
1556	>	ObjectInputStream ois = new ObjectInputStream
1557	>	(new ByteArrayInputStream(serialBytes(o)));
1558	>	T clone = (T) ois.readObject();
1559	>	assertSame(o.getClass(), clone.getClass());
1560	>	return clone;
1561	>	} catch (Throwable fail) {
1562	>	threadUnexpectedException(fail);
1563	>	return null;
1564	>	}
1565	>	}
1566	>
1567	>	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1568	>	Runnable... throwingActions) {
1569	>	for (Runnable throwingAction : throwingActions) {
1570	>	boolean threw = false;
1571	>	try { throwingAction.run(); }
1572	>	catch (Throwable t) {
1573	>	threw = true;
1574	>	if (!expectedExceptionClass.isInstance(t)) {
1575	>	AssertionFailedError afe =
1576	>	new AssertionFailedError
1577	>	("Expected " + expectedExceptionClass.getName() +
1578	>	", got " + t.getClass().getName());
1579	>	afe.initCause(t);
1580	>	threadUnexpectedException(afe);
1581	>	}
1582	>	}
1583	>	if (!threw)
1584	>	shouldThrow(expectedExceptionClass.getName());
1585	>	}
1586	>	}
1587	>
1588	>	public void assertIteratorExhausted(Iterator<?> it) {
1589	>	try {
1590	>	it.next();
1591	>	shouldThrow();
1592	>	} catch (NoSuchElementException success) {}
1593	>	assertFalse(it.hasNext());
1594		}
500	–
501	–
1595		}

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