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Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.15 by dl, Mon Dec 29 19:05:40 2003 UTC vs.
Revision 1.195 by jsr166, Sat Jun 4 23:49:29 2016 UTC

#	Line 1 | Line 1
1		/*
2		* Written by Doug Lea with assistance from members of JCP JSR-166
3		* Expert Group and released to the public domain, as explained at
4	<	* http://creativecommons.org/licenses/publicdomain
5	<	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	<	* Pat Fisher, Mike Judd.
4	>	* http://creativecommons.org/publicdomain/zero/1.0/
5	>	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	>	* Pat Fisher, Mike Judd.
7		*/
8
9	<	import junit.framework.*;
10	<	import java.util.*;
11	<	import java.util.concurrent.*;
12	<	import java.io.*;
13	<	import java.security.*;
9	>	/*
10	>	* @test
11	>	* @summary JSR-166 tck tests
12	>	* @modules java.management
13	>	* @build *
14	>	* @run junit/othervm/timeout=1000 -Djsr166.testImplementationDetails=true JSR166TestCase
15	>	* @run junit/othervm/timeout=1000 -Djava.util.concurrent.ForkJoinPool.common.parallelism=0 -Djsr166.testImplementationDetails=true JSR166TestCase
16	>	*/
17	>
18	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
19	>	import static java.util.concurrent.TimeUnit.MINUTES;
20	>	import static java.util.concurrent.TimeUnit.NANOSECONDS;
21	>
22	>	import java.io.ByteArrayInputStream;
23	>	import java.io.ByteArrayOutputStream;
24	>	import java.io.ObjectInputStream;
25	>	import java.io.ObjectOutputStream;
26	>	import java.lang.management.ManagementFactory;
27	>	import java.lang.management.ThreadInfo;
28	>	import java.lang.management.ThreadMXBean;
29	>	import java.lang.reflect.Constructor;
30	>	import java.lang.reflect.Method;
31	>	import java.lang.reflect.Modifier;
32	>	import java.nio.file.Files;
33	>	import java.nio.file.Paths;
34	>	import java.security.CodeSource;
35	>	import java.security.Permission;
36	>	import java.security.PermissionCollection;
37	>	import java.security.Permissions;
38	>	import java.security.Policy;
39	>	import java.security.ProtectionDomain;
40	>	import java.security.SecurityPermission;
41	>	import java.util.ArrayList;
42	>	import java.util.Arrays;
43	>	import java.util.Date;
44	>	import java.util.Enumeration;
45	>	import java.util.Iterator;
46	>	import java.util.List;
47	>	import java.util.NoSuchElementException;
48	>	import java.util.PropertyPermission;
49	>	import java.util.concurrent.BlockingQueue;
50	>	import java.util.concurrent.Callable;
51	>	import java.util.concurrent.CountDownLatch;
52	>	import java.util.concurrent.CyclicBarrier;
53	>	import java.util.concurrent.ExecutionException;
54	>	import java.util.concurrent.Executors;
55	>	import java.util.concurrent.ExecutorService;
56	>	import java.util.concurrent.ForkJoinPool;
57	>	import java.util.concurrent.Future;
58	>	import java.util.concurrent.RecursiveAction;
59	>	import java.util.concurrent.RecursiveTask;
60	>	import java.util.concurrent.RejectedExecutionHandler;
61	>	import java.util.concurrent.Semaphore;
62	>	import java.util.concurrent.SynchronousQueue;
63	>	import java.util.concurrent.ThreadFactory;
64	>	import java.util.concurrent.ThreadPoolExecutor;
65	>	import java.util.concurrent.TimeoutException;
66	>	import java.util.concurrent.atomic.AtomicBoolean;
67	>	import java.util.concurrent.atomic.AtomicReference;
68	>	import java.util.regex.Matcher;
69	>	import java.util.regex.Pattern;
70	>
71	>	import junit.framework.AssertionFailedError;
72	>	import junit.framework.Test;
73	>	import junit.framework.TestCase;
74	>	import junit.framework.TestResult;
75	>	import junit.framework.TestSuite;
76
77		/**
78		* Base class for JSR166 Junit TCK tests.  Defines some constants,
79		* utility methods and classes, as well as a simple framework for
80		* helping to make sure that assertions failing in generated threads
81		* cause the associated test that generated them to itself fail (which
82	<	* JUnit doe not otherwise arrange).  The rules for creating such
82	>	* JUnit does not otherwise arrange).  The rules for creating such
83		* tests are:
84		*
85		* <ol>
86		*
87	<	* <li> All assertions in code running in generated threads must use
88	<	* the forms {@link threadFail} , {@link threadAssertTrue} {@link
89	<	* threadAssertEquals}, or {@link threadAssertNull}, (not
90	<	* <tt>fail</tt>, <tt>assertTrue</tt>, etc.) It is OK (but not
87	>	* <li>All assertions in code running in generated threads must use
88	>	* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
89	>	* #threadAssertEquals}, or {@link #threadAssertNull}, (not
90	>	* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
91		* particularly recommended) for other code to use these forms too.
92		* Only the most typically used JUnit assertion methods are defined
93	<	* this way, but enough to live with.</li>
93	>	* this way, but enough to live with.
94		*
95	<	* <li> If you override {@link setUp} or {@link tearDown}, make sure
96	<	* to invoke <tt>super.setUp</tt> and <tt>super.tearDown</tt> within
95	>	* <li>If you override {@link #setUp} or {@link #tearDown}, make sure
96	>	* to invoke {@code super.setUp} and {@code super.tearDown} within
97		* them. These methods are used to clear and check for thread
98	<	* assertion failures.</li>
98	>	* assertion failures.
99		*
100	<	* <li>All delays and timeouts must use one of the constants <tt>
101	<	* SHORT_DELAY_MS</tt>, <tt> SMALL_DELAY_MS</tt>, <tt> MEDIUM_DELAY_MS</tt>,
102	<	* <tt> LONG_DELAY_MS</tt>. The idea here is that a SHORT is always
100	>	* <li>All delays and timeouts must use one of the constants {@code
101	>	* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
102	>	* {@code LONG_DELAY_MS}. The idea here is that a SHORT is always
103		* discriminable from zero time, and always allows enough time for the
104		* small amounts of computation (creating a thread, calling a few
105		* methods, etc) needed to reach a timeout point. Similarly, a SMALL
106		* is always discriminable as larger than SHORT and smaller than
107		* MEDIUM.  And so on. These constants are set to conservative values,
108		* but even so, if there is ever any doubt, they can all be increased
109	<	* in one spot to rerun tests on slower platforms</li>
109	>	* in one spot to rerun tests on slower platforms.
110		*
111	<	* <li> All threads generated must be joined inside each test case
112	<	* method (or <tt>fail</tt> to do so) before returning from the
113	<	* method. The <tt> joinPool</tt> method can be used to do this when
114	<	* using Executors.</li>
111	>	* <li>All threads generated must be joined inside each test case
112	>	* method (or {@code fail} to do so) before returning from the
113	>	* method. The {@code joinPool} method can be used to do this when
114	>	* using Executors.
115		*
116		* </ol>
117		*
118	<	* <p> <b>Other notes</b>
118	>	* <p><b>Other notes</b>
119		* <ul>
120		*
121	<	* <li> Usually, there is one testcase method per JSR166 method
121	>	* <li>Usually, there is one testcase method per JSR166 method
122		* covering "normal" operation, and then as many exception-testing
123		* methods as there are exceptions the method can throw. Sometimes
124		* there are multiple tests per JSR166 method when the different
125		* "normal" behaviors differ significantly. And sometimes testcases
126	<	* cover multiple methods when they cannot be tested in
127	<	* isolation.</li>
128	<	*
67	<	* <li> The documentation style for testcases is to provide as javadoc
126	>	* cover multiple methods when they cannot be tested in isolation.
127	>	*
128	>	* <li>The documentation style for testcases is to provide as javadoc
129		* a simple sentence or two describing the property that the testcase
130		* method purports to test. The javadocs do not say anything about how
131	<	* the property is tested. To find out, read the code.</li>
131	>	* the property is tested. To find out, read the code.
132		*
133	<	* <li> These tests are "conformance tests", and do not attempt to
133	>	* <li>These tests are "conformance tests", and do not attempt to
134		* test throughput, latency, scalability or other performance factors
135		* (see the separate "jtreg" tests for a set intended to check these
136		* for the most central aspects of functionality.) So, most tests use
137		* the smallest sensible numbers of threads, collection sizes, etc
138	<	* needed to check basic conformance.</li>
138	>	* needed to check basic conformance.
139		*
140		* <li>The test classes currently do not declare inclusion in
141		* any particular package to simplify things for people integrating
142	<	* them in TCK test suites.</li>
142	>	* them in TCK test suites.
143		*
144	<	* <li> As a convenience, the <tt>main</tt> of this class (JSR166TestCase)
145	<	* runs all JSR166 unit tests.</li>
144	>	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
145	>	* runs all JSR166 unit tests.
146		*
147		* </ul>
148		*/
149		public class JSR166TestCase extends TestCase {
150	+	private static final boolean useSecurityManager =
151	+	Boolean.getBoolean("jsr166.useSecurityManager");
152	+
153	+	protected static final boolean expensiveTests =
154	+	Boolean.getBoolean("jsr166.expensiveTests");
155	+
156	+	/**
157	+	* If true, also run tests that are not part of the official tck
158	+	* because they test unspecified implementation details.
159	+	*/
160	+	protected static final boolean testImplementationDetails =
161	+	Boolean.getBoolean("jsr166.testImplementationDetails");
162	+
163	+	/**
164	+	* If true, report on stdout all "slow" tests, that is, ones that
165	+	* take more than profileThreshold milliseconds to execute.
166	+	*/
167	+	private static final boolean profileTests =
168	+	Boolean.getBoolean("jsr166.profileTests");
169	+
170	+	/**
171	+	* The number of milliseconds that tests are permitted for
172	+	* execution without being reported, when profileTests is set.
173	+	*/
174	+	private static final long profileThreshold =
175	+	Long.getLong("jsr166.profileThreshold", 100);
176	+
177	+	/**
178	+	* The number of repetitions per test (for tickling rare bugs).
179	+	*/
180	+	private static final int runsPerTest =
181	+	Integer.getInteger("jsr166.runsPerTest", 1);
182	+
183	+	/**
184	+	* The number of repetitions of the test suite (for finding leaks?).
185	+	*/
186	+	private static final int suiteRuns =
187	+	Integer.getInteger("jsr166.suiteRuns", 1);
188	+
189	+	/**
190	+	* Returns the value of the system property, or NaN if not defined.
191	+	*/
192	+	private static float systemPropertyValue(String name) {
193	+	String floatString = System.getProperty(name);
194	+	if (floatString == null)
195	+	return Float.NaN;
196	+	try {
197	+	return Float.parseFloat(floatString);
198	+	} catch (NumberFormatException ex) {
199	+	throw new IllegalArgumentException(
200	+	String.format("Bad float value in system property %s=%s",
201	+	name, floatString));
202	+	}
203	+	}
204	+
205		/**
206	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
207	<	*/
208	<	public static void main (String[] args) {
209	<	junit.textui.TestRunner.run (suite());
206	>	* The scaling factor to apply to standard delays used in tests.
207	>	* May be initialized from any of:
208	>	* - the "jsr166.delay.factor" system property
209	>	* - the "test.timeout.factor" system property (as used by jtreg)
210	>	*   See: http://openjdk.java.net/jtreg/tag-spec.html
211	>	* - hard-coded fuzz factor when using a known slowpoke VM
212	>	*/
213	>	private static final float delayFactor = delayFactor();
214	>
215	>	private static float delayFactor() {
216	>	float x;
217	>	if (!Float.isNaN(x = systemPropertyValue("jsr166.delay.factor")))
218	>	return x;
219	>	if (!Float.isNaN(x = systemPropertyValue("test.timeout.factor")))
220	>	return x;
221	>	String prop = System.getProperty("java.vm.version");
222	>	if (prop != null && prop.matches(".*debug.*"))
223	>	return 4.0f; // How much slower is fastdebug than product?!
224	>	return 1.0f;
225	>	}
226	>
227	>	public JSR166TestCase() { super(); }
228	>	public JSR166TestCase(String name) { super(name); }
229	>
230	>	/**
231	>	* A filter for tests to run, matching strings of the form
232	>	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
233	>	* Usefully combined with jsr166.runsPerTest.
234	>	*/
235	>	private static final Pattern methodFilter = methodFilter();
236	>
237	>	private static Pattern methodFilter() {
238	>	String regex = System.getProperty("jsr166.methodFilter");
239	>	return (regex == null) ? null : Pattern.compile(regex);
240	>	}
241	>
242	>	// Instrumentation to debug very rare, but very annoying hung test runs.
243	>	static volatile TestCase currentTestCase;
244	>	// static volatile int currentRun = 0;
245	>	static {
246	>	Runnable checkForWedgedTest = new Runnable() { public void run() {
247	>	// Avoid spurious reports with enormous runsPerTest.
248	>	// A single test case run should never take more than 1 second.
249	>	// But let's cap it at the high end too ...
250	>	final int timeoutMinutes =
251	>	Math.min(15, Math.max(runsPerTest / 60, 1));
252	>	for (TestCase lastTestCase = currentTestCase;;) {
253	>	try { MINUTES.sleep(timeoutMinutes); }
254	>	catch (InterruptedException unexpected) { break; }
255	>	if (lastTestCase == currentTestCase) {
256	>	System.err.printf(
257	>	"Looks like we're stuck running test: %s%n",
258	>	lastTestCase);
259	>	//                     System.err.printf(
260	>	//                         "Looks like we're stuck running test: %s (%d/%d)%n",
261	>	//                         lastTestCase, currentRun, runsPerTest);
262	>	//                     System.err.println("availableProcessors=" +
263	>	//                         Runtime.getRuntime().availableProcessors());
264	>	//                     System.err.printf("cpu model = %s%n", cpuModel());
265	>	dumpTestThreads();
266	>	// one stack dump is probably enough; more would be spam
267	>	break;
268	>	}
269	>	lastTestCase = currentTestCase;
270	>	}}};
271	>	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
272	>	thread.setDaemon(true);
273	>	thread.start();
274	>	}
275	>
276	>	//     public static String cpuModel() {
277	>	//         try {
278	>	//             Matcher matcher = Pattern.compile("model name\\s*: (.*)")
279	>	//                 .matcher(new String(
280	>	//                      Files.readAllBytes(Paths.get("/proc/cpuinfo")), "UTF-8"));
281	>	//             matcher.find();
282	>	//             return matcher.group(1);
283	>	//         } catch (Exception ex) { return null; }
284	>	//     }
285	>
286	>	public void runBare() throws Throwable {
287	>	currentTestCase = this;
288	>	if (methodFilter == null
289	>	|| methodFilter.matcher(toString()).find())
290	>	super.runBare();
291	>	}
292	>
293	>	protected void runTest() throws Throwable {
294	>	for (int i = 0; i < runsPerTest; i++) {
295	>	// currentRun = i;
296	>	if (profileTests)
297	>	runTestProfiled();
298	>	else
299	>	super.runTest();
300	>	}
301	>	}
302	>
303	>	protected void runTestProfiled() throws Throwable {
304	>	for (int i = 0; i < 2; i++) {
305	>	long startTime = System.nanoTime();
306	>	super.runTest();
307	>	long elapsedMillis = millisElapsedSince(startTime);
308	>	if (elapsedMillis < profileThreshold)
309	>	break;
310	>	// Never report first run of any test; treat it as a
311	>	// warmup run, notably to trigger all needed classloading,
312	>	if (i > 0)
313	>	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
314	>	}
315	>	}
316	>
317	>	/**
318	>	* Runs all JSR166 unit tests using junit.textui.TestRunner.
319	>	*/
320	>	public static void main(String[] args) {
321	>	main(suite(), args);
322	>	}
323	>
324	>	static class PithyResultPrinter extends junit.textui.ResultPrinter {
325	>	PithyResultPrinter(java.io.PrintStream writer) { super(writer); }
326	>	long runTime;
327	>	public void startTest(Test test) {}
328	>	protected void printHeader(long runTime) {
329	>	this.runTime = runTime; // defer printing for later
330	>	}
331	>	protected void printFooter(TestResult result) {
332	>	if (result.wasSuccessful()) {
333	>	getWriter().println("OK (" + result.runCount() + " tests)"
334	>	+ "  Time: " + elapsedTimeAsString(runTime));
335	>	} else {
336	>	getWriter().println("Time: " + elapsedTimeAsString(runTime));
337	>	super.printFooter(result);
338	>	}
339	>	}
340		}
341
342		/**
343	<	* Collects all JSR166 unit tests as one suite
344	<	*/
345	<	public static Test suite ( ) {
346	<	TestSuite suite = new TestSuite("JSR166 Unit Tests");
347	<
348	<	suite.addTest(new TestSuite(AbstractExecutorServiceTest.class));
349	<	suite.addTest(new TestSuite(AbstractQueuedSynchronizerTest.class));
350	<	suite.addTest(new TestSuite(ArrayBlockingQueueTest.class));
351	<	suite.addTest(new TestSuite(AtomicBooleanTest.class));
352	<	suite.addTest(new TestSuite(AtomicIntegerArrayTest.class));
353	<	suite.addTest(new TestSuite(AtomicIntegerFieldUpdaterTest.class));
354	<	suite.addTest(new TestSuite(AtomicIntegerTest.class));
355	<	suite.addTest(new TestSuite(AtomicLongArrayTest.class));
356	<	suite.addTest(new TestSuite(AtomicLongFieldUpdaterTest.class));
357	<	suite.addTest(new TestSuite(AtomicLongTest.class));
358	<	suite.addTest(new TestSuite(AtomicMarkableReferenceTest.class));
359	<	suite.addTest(new TestSuite(AtomicReferenceArrayTest.class));
360	<	suite.addTest(new TestSuite(AtomicReferenceFieldUpdaterTest.class));
361	<	suite.addTest(new TestSuite(AtomicReferenceTest.class));
362	<	suite.addTest(new TestSuite(AtomicStampedReferenceTest.class));
363	<	suite.addTest(new TestSuite(ConcurrentHashMapTest.class));
364	<	suite.addTest(new TestSuite(ConcurrentLinkedQueueTest.class));
365	<	suite.addTest(new TestSuite(CopyOnWriteArrayListTest.class));
366	<	suite.addTest(new TestSuite(CopyOnWriteArraySetTest.class));
367	<	suite.addTest(new TestSuite(CountDownLatchTest.class));
368	<	suite.addTest(new TestSuite(CyclicBarrierTest.class));
369	<	suite.addTest(new TestSuite(DelayQueueTest.class));
370	<	suite.addTest(new TestSuite(ExchangerTest.class));
371	<	suite.addTest(new TestSuite(ExecutorsTest.class));
372	<	suite.addTest(new TestSuite(ExecutorCompletionServiceTest.class));
373	<	suite.addTest(new TestSuite(FutureTaskTest.class));
374	<	suite.addTest(new TestSuite(LinkedBlockingQueueTest.class));
375	<	suite.addTest(new TestSuite(LinkedListTest.class));
376	<	suite.addTest(new TestSuite(LockSupportTest.class));
377	<	suite.addTest(new TestSuite(PriorityBlockingQueueTest.class));
378	<	suite.addTest(new TestSuite(PriorityQueueTest.class));
379	<	suite.addTest(new TestSuite(ReentrantLockTest.class));
380	<	suite.addTest(new TestSuite(ReentrantReadWriteLockTest.class));
135	<	suite.addTest(new TestSuite(ScheduledExecutorTest.class));
136	<	suite.addTest(new TestSuite(SemaphoreTest.class));
137	<	suite.addTest(new TestSuite(SynchronousQueueTest.class));
138	<	suite.addTest(new TestSuite(SystemTest.class));
139	<	suite.addTest(new TestSuite(ThreadLocalTest.class));
140	<	suite.addTest(new TestSuite(ThreadPoolExecutorTest.class));
141	<	suite.addTest(new TestSuite(ThreadTest.class));
142	<	suite.addTest(new TestSuite(TimeUnitTest.class));
143	<
343	>	* Returns a TestRunner that doesn't bother with unnecessary
344	>	* fluff, like printing a "." for each test case.
345	>	*/
346	>	static junit.textui.TestRunner newPithyTestRunner() {
347	>	junit.textui.TestRunner runner = new junit.textui.TestRunner();
348	>	runner.setPrinter(new PithyResultPrinter(System.out));
349	>	return runner;
350	>	}
351	>
352	>	/**
353	>	* Runs all unit tests in the given test suite.
354	>	* Actual behavior influenced by jsr166.* system properties.
355	>	*/
356	>	static void main(Test suite, String[] args) {
357	>	if (useSecurityManager) {
358	>	System.err.println("Setting a permissive security manager");
359	>	Policy.setPolicy(permissivePolicy());
360	>	System.setSecurityManager(new SecurityManager());
361	>	}
362	>	for (int i = 0; i < suiteRuns; i++) {
363	>	TestResult result = newPithyTestRunner().doRun(suite);
364	>	if (!result.wasSuccessful())
365	>	System.exit(1);
366	>	System.gc();
367	>	System.runFinalization();
368	>	}
369	>	}
370	>
371	>	public static TestSuite newTestSuite(Object... suiteOrClasses) {
372	>	TestSuite suite = new TestSuite();
373	>	for (Object suiteOrClass : suiteOrClasses) {
374	>	if (suiteOrClass instanceof TestSuite)
375	>	suite.addTest((TestSuite) suiteOrClass);
376	>	else if (suiteOrClass instanceof Class)
377	>	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
378	>	else
379	>	throw new ClassCastException("not a test suite or class");
380	>	}
381		return suite;
382		}
383
384	+	public static void addNamedTestClasses(TestSuite suite,
385	+	String... testClassNames) {
386	+	for (String testClassName : testClassNames) {
387	+	try {
388	+	Class<?> testClass = Class.forName(testClassName);
389	+	Method m = testClass.getDeclaredMethod("suite",
390	+	new Class<?>[0]);
391	+	suite.addTest(newTestSuite((Test)m.invoke(null)));
392	+	} catch (Exception e) {
393	+	throw new Error("Missing test class", e);
394	+	}
395	+	}
396	+	}
397	+
398	+	public static final double JAVA_CLASS_VERSION;
399	+	public static final String JAVA_SPECIFICATION_VERSION;
400	+	static {
401	+	try {
402	+	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
403	+	new java.security.PrivilegedAction<Double>() {
404	+	public Double run() {
405	+	return Double.valueOf(System.getProperty("java.class.version"));}});
406	+	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
407	+	new java.security.PrivilegedAction<String>() {
408	+	public String run() {
409	+	return System.getProperty("java.specification.version");}});
410	+	} catch (Throwable t) {
411	+	throw new Error(t);
412	+	}
413	+	}
414	+
415	+	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
416	+	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
417	+	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
418	+	public static boolean atLeastJava9() {
419	+	return JAVA_CLASS_VERSION >= 53.0
420	+	// As of 2015-09, java9 still uses 52.0 class file version
421	+	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?(9|[0-9][0-9])$");
422	+	}
423	+	public static boolean atLeastJava10() {
424	+	return JAVA_CLASS_VERSION >= 54.0
425	+	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?[0-9][0-9]$");
426	+	}
427	+
428	+	/**
429	+	* Collects all JSR166 unit tests as one suite.
430	+	*/
431	+	public static Test suite() {
432	+	// Java7+ test classes
433	+	TestSuite suite = newTestSuite(
434	+	ForkJoinPoolTest.suite(),
435	+	ForkJoinTaskTest.suite(),
436	+	RecursiveActionTest.suite(),
437	+	RecursiveTaskTest.suite(),
438	+	LinkedTransferQueueTest.suite(),
439	+	PhaserTest.suite(),
440	+	ThreadLocalRandomTest.suite(),
441	+	AbstractExecutorServiceTest.suite(),
442	+	AbstractQueueTest.suite(),
443	+	AbstractQueuedSynchronizerTest.suite(),
444	+	AbstractQueuedLongSynchronizerTest.suite(),
445	+	ArrayBlockingQueueTest.suite(),
446	+	ArrayDequeTest.suite(),
447	+	AtomicBooleanTest.suite(),
448	+	AtomicIntegerArrayTest.suite(),
449	+	AtomicIntegerFieldUpdaterTest.suite(),
450	+	AtomicIntegerTest.suite(),
451	+	AtomicLongArrayTest.suite(),
452	+	AtomicLongFieldUpdaterTest.suite(),
453	+	AtomicLongTest.suite(),
454	+	AtomicMarkableReferenceTest.suite(),
455	+	AtomicReferenceArrayTest.suite(),
456	+	AtomicReferenceFieldUpdaterTest.suite(),
457	+	AtomicReferenceTest.suite(),
458	+	AtomicStampedReferenceTest.suite(),
459	+	ConcurrentHashMapTest.suite(),
460	+	ConcurrentLinkedDequeTest.suite(),
461	+	ConcurrentLinkedQueueTest.suite(),
462	+	ConcurrentSkipListMapTest.suite(),
463	+	ConcurrentSkipListSubMapTest.suite(),
464	+	ConcurrentSkipListSetTest.suite(),
465	+	ConcurrentSkipListSubSetTest.suite(),
466	+	CopyOnWriteArrayListTest.suite(),
467	+	CopyOnWriteArraySetTest.suite(),
468	+	CountDownLatchTest.suite(),
469	+	CyclicBarrierTest.suite(),
470	+	DelayQueueTest.suite(),
471	+	EntryTest.suite(),
472	+	ExchangerTest.suite(),
473	+	ExecutorsTest.suite(),
474	+	ExecutorCompletionServiceTest.suite(),
475	+	FutureTaskTest.suite(),
476	+	LinkedBlockingDequeTest.suite(),
477	+	LinkedBlockingQueueTest.suite(),
478	+	LinkedListTest.suite(),
479	+	LockSupportTest.suite(),
480	+	PriorityBlockingQueueTest.suite(),
481	+	PriorityQueueTest.suite(),
482	+	ReentrantLockTest.suite(),
483	+	ReentrantReadWriteLockTest.suite(),
484	+	ScheduledExecutorTest.suite(),
485	+	ScheduledExecutorSubclassTest.suite(),
486	+	SemaphoreTest.suite(),
487	+	SynchronousQueueTest.suite(),
488	+	SystemTest.suite(),
489	+	ThreadLocalTest.suite(),
490	+	ThreadPoolExecutorTest.suite(),
491	+	ThreadPoolExecutorSubclassTest.suite(),
492	+	ThreadTest.suite(),
493	+	TimeUnitTest.suite(),
494	+	TreeMapTest.suite(),
495	+	TreeSetTest.suite(),
496	+	TreeSubMapTest.suite(),
497	+	TreeSubSetTest.suite());
498	+
499	+	// Java8+ test classes
500	+	if (atLeastJava8()) {
501	+	String[] java8TestClassNames = {
502	+	"Atomic8Test",
503	+	"CompletableFutureTest",
504	+	"ConcurrentHashMap8Test",
505	+	"CountedCompleterTest",
506	+	"DoubleAccumulatorTest",
507	+	"DoubleAdderTest",
508	+	"ForkJoinPool8Test",
509	+	"ForkJoinTask8Test",
510	+	"LongAccumulatorTest",
511	+	"LongAdderTest",
512	+	"SplittableRandomTest",
513	+	"StampedLockTest",
514	+	"SubmissionPublisherTest",
515	+	"ThreadLocalRandom8Test",
516	+	"TimeUnit8Test",
517	+	};
518	+	addNamedTestClasses(suite, java8TestClassNames);
519	+	}
520	+
521	+	// Java9+ test classes
522	+	if (atLeastJava9()) {
523	+	String[] java9TestClassNames = {
524	+	"ExecutorCompletionService9Test",
525	+	};
526	+	addNamedTestClasses(suite, java9TestClassNames);
527	+	}
528	+
529	+	return suite;
530	+	}
531	+
532	+	/** Returns list of junit-style test method names in given class. */
533	+	public static ArrayList<String> testMethodNames(Class<?> testClass) {
534	+	Method[] methods = testClass.getDeclaredMethods();
535	+	ArrayList<String> names = new ArrayList<String>(methods.length);
536	+	for (Method method : methods) {
537	+	if (method.getName().startsWith("test")
538	+	&& Modifier.isPublic(method.getModifiers())
539	+	// method.getParameterCount() requires jdk8+
540	+	&& method.getParameterTypes().length == 0) {
541	+	names.add(method.getName());
542	+	}
543	+	}
544	+	return names;
545	+	}
546	+
547	+	/**
548	+	* Returns junit-style testSuite for the given test class, but
549	+	* parameterized by passing extra data to each test.
550	+	*/
551	+	public static <ExtraData> Test parameterizedTestSuite
552	+	(Class<? extends JSR166TestCase> testClass,
553	+	Class<ExtraData> dataClass,
554	+	ExtraData data) {
555	+	try {
556	+	TestSuite suite = new TestSuite();
557	+	Constructor c =
558	+	testClass.getDeclaredConstructor(dataClass, String.class);
559	+	for (String methodName : testMethodNames(testClass))
560	+	suite.addTest((Test) c.newInstance(data, methodName));
561	+	return suite;
562	+	} catch (Exception e) {
563	+	throw new Error(e);
564	+	}
565	+	}
566	+
567	+	/**
568	+	* Returns junit-style testSuite for the jdk8 extension of the
569	+	* given test class, but parameterized by passing extra data to
570	+	* each test.  Uses reflection to allow compilation in jdk7.
571	+	*/
572	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
573	+	(Class<? extends JSR166TestCase> testClass,
574	+	Class<ExtraData> dataClass,
575	+	ExtraData data) {
576	+	if (atLeastJava8()) {
577	+	String name = testClass.getName();
578	+	String name8 = name.replaceAll("Test$", "8Test");
579	+	if (name.equals(name8)) throw new Error(name);
580	+	try {
581	+	return (Test)
582	+	Class.forName(name8)
583	+	.getMethod("testSuite", new Class[] { dataClass })
584	+	.invoke(null, data);
585	+	} catch (Exception e) {
586	+	throw new Error(e);
587	+	}
588	+	} else {
589	+	return new TestSuite();
590	+	}
591	+	}
592	+
593	+	// Delays for timing-dependent tests, in milliseconds.
594
595		public static long SHORT_DELAY_MS;
596		public static long SMALL_DELAY_MS;
597		public static long MEDIUM_DELAY_MS;
598		public static long LONG_DELAY_MS;
599
153	–
600		/**
601	<	* Return the shortest timed delay. This could
602	<	* be reimplemented to use for example a Property.
603	<	*/
601	>	* Returns the shortest timed delay. This can be scaled up for
602	>	* slow machines using the jsr166.delay.factor system property,
603	>	* or via jtreg's -timeoutFactor: flag.
604	>	* http://openjdk.java.net/jtreg/command-help.html
605	>	*/
606		protected long getShortDelay() {
607	<	return 100;
607	>	return (long) (50 * delayFactor);
608		}
609
162	–
610		/**
611	<	* Set delays as multiples of SHORT_DELAY.
611	>	* Sets delays as multiples of SHORT_DELAY.
612		*/
613	<	protected  void setDelays() {
613	>	protected void setDelays() {
614		SHORT_DELAY_MS = getShortDelay();
615	<	SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
615	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
616		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
617	<	LONG_DELAY_MS = SHORT_DELAY_MS * 50;
617	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
618	>	}
619	>
620	>	/**
621	>	* Returns a timeout in milliseconds to be used in tests that
622	>	* verify that operations block or time out.
623	>	*/
624	>	long timeoutMillis() {
625	>	return SHORT_DELAY_MS / 4;
626	>	}
627	>
628	>	/**
629	>	* Returns a new Date instance representing a time at least
630	>	* delayMillis milliseconds in the future.
631	>	*/
632	>	Date delayedDate(long delayMillis) {
633	>	// Add 1 because currentTimeMillis is known to round into the past.
634	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
635		}
636
637		/**
638	<	* Flag set true if any threadAssert methods fail
638	>	* The first exception encountered if any threadAssertXXX method fails.
639		*/
640	<	volatile boolean threadFailed;
640	>	private final AtomicReference<Throwable> threadFailure
641	>	= new AtomicReference<Throwable>(null);
642
643		/**
644	<	* Initialize test to indicate that no thread assertions have failed
644	>	* Records an exception so that it can be rethrown later in the test
645	>	* harness thread, triggering a test case failure.  Only the first
646	>	* failure is recorded; subsequent calls to this method from within
647	>	* the same test have no effect.
648		*/
649	<	public void setUp() {
649	>	public void threadRecordFailure(Throwable t) {
650	>	System.err.println(t);
651	>	dumpTestThreads();
652	>	threadFailure.compareAndSet(null, t);
653	>	}
654	>
655	>	public void setUp() {
656		setDelays();
657	<	threadFailed = false;
657	>	}
658	>
659	>	void tearDownFail(String format, Object... args) {
660	>	String msg = toString() + ": " + String.format(format, args);
661	>	System.err.println(msg);
662	>	dumpTestThreads();
663	>	throw new AssertionFailedError(msg);
664		}
665
666		/**
667	<	* Trigger test case failure if any thread assertions have failed
667	>	* Extra checks that get done for all test cases.
668	>	*
669	>	* Triggers test case failure if any thread assertions have failed,
670	>	* by rethrowing, in the test harness thread, any exception recorded
671	>	* earlier by threadRecordFailure.
672	>	*
673	>	* Triggers test case failure if interrupt status is set in the main thread.
674		*/
675	<	public void tearDown() {
676	<	assertFalse(threadFailed);
675	>	public void tearDown() throws Exception {
676	>	Throwable t = threadFailure.getAndSet(null);
677	>	if (t != null) {
678	>	if (t instanceof Error)
679	>	throw (Error) t;
680	>	else if (t instanceof RuntimeException)
681	>	throw (RuntimeException) t;
682	>	else if (t instanceof Exception)
683	>	throw (Exception) t;
684	>	else {
685	>	AssertionFailedError afe =
686	>	new AssertionFailedError(t.toString());
687	>	afe.initCause(t);
688	>	throw afe;
689	>	}
690	>	}
691	>
692	>	if (Thread.interrupted())
693	>	tearDownFail("interrupt status set in main thread");
694	>
695	>	checkForkJoinPoolThreadLeaks();
696		}
697
698		/**
699	<	* Fail, also setting status to indicate current testcase should fail
700	<	*/
699	>	* Finds missing PoolCleaners
700	>	*/
701	>	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
702	>	Thread[] survivors = new Thread[7];
703	>	int count = Thread.enumerate(survivors);
704	>	for (int i = 0; i < count; i++) {
705	>	Thread thread = survivors[i];
706	>	String name = thread.getName();
707	>	if (name.startsWith("ForkJoinPool-")) {
708	>	// give thread some time to terminate
709	>	thread.join(LONG_DELAY_MS);
710	>	if (thread.isAlive())
711	>	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
712	>	thread);
713	>	}
714	>	}
715	>
716	>	if (!ForkJoinPool.commonPool()
717	>	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
718	>	tearDownFail("ForkJoin common pool thread stuck");
719	>	}
720	>
721	>	/**
722	>	* Just like fail(reason), but additionally recording (using
723	>	* threadRecordFailure) any AssertionFailedError thrown, so that
724	>	* the current testcase will fail.
725	>	*/
726		public void threadFail(String reason) {
727	<	threadFailed = true;
728	<	fail(reason);
727	>	try {
728	>	fail(reason);
729	>	} catch (AssertionFailedError t) {
730	>	threadRecordFailure(t);
731	>	throw t;
732	>	}
733		}
734
735		/**
736	<	* If expression not true, set status to indicate current testcase
737	<	* should fail
738	<	*/
736	>	* Just like assertTrue(b), but additionally recording (using
737	>	* threadRecordFailure) any AssertionFailedError thrown, so that
738	>	* the current testcase will fail.
739	>	*/
740		public void threadAssertTrue(boolean b) {
741	<	if (!b) {
207	<	threadFailed = true;
741	>	try {
742		assertTrue(b);
743	+	} catch (AssertionFailedError t) {
744	+	threadRecordFailure(t);
745	+	throw t;
746		}
747		}
748
749		/**
750	<	* If expression not false, set status to indicate current testcase
751	<	* should fail
752	<	*/
750	>	* Just like assertFalse(b), but additionally recording (using
751	>	* threadRecordFailure) any AssertionFailedError thrown, so that
752	>	* the current testcase will fail.
753	>	*/
754		public void threadAssertFalse(boolean b) {
755	<	if (b) {
218	<	threadFailed = true;
755	>	try {
756		assertFalse(b);
757	+	} catch (AssertionFailedError t) {
758	+	threadRecordFailure(t);
759	+	throw t;
760		}
761		}
762
763		/**
764	<	* If argument not null, set status to indicate current testcase
765	<	* should fail
766	<	*/
764	>	* Just like assertNull(x), but additionally recording (using
765	>	* threadRecordFailure) any AssertionFailedError thrown, so that
766	>	* the current testcase will fail.
767	>	*/
768		public void threadAssertNull(Object x) {
769	<	if (x != null) {
229	<	threadFailed = true;
769	>	try {
770		assertNull(x);
771	+	} catch (AssertionFailedError t) {
772	+	threadRecordFailure(t);
773	+	throw t;
774		}
775		}
776
777		/**
778	<	* If arguments not equal, set status to indicate current testcase
779	<	* should fail
780	<	*/
778	>	* Just like assertEquals(x, y), but additionally recording (using
779	>	* threadRecordFailure) any AssertionFailedError thrown, so that
780	>	* the current testcase will fail.
781	>	*/
782		public void threadAssertEquals(long x, long y) {
783	<	if (x != y) {
240	<	threadFailed = true;
783	>	try {
784		assertEquals(x, y);
785	+	} catch (AssertionFailedError t) {
786	+	threadRecordFailure(t);
787	+	throw t;
788		}
789		}
790
791		/**
792	<	* If arguments not equal, set status to indicate current testcase
793	<	* should fail
794	<	*/
792	>	* Just like assertEquals(x, y), but additionally recording (using
793	>	* threadRecordFailure) any AssertionFailedError thrown, so that
794	>	* the current testcase will fail.
795	>	*/
796		public void threadAssertEquals(Object x, Object y) {
797	<	if (x != y && (x == null || !x.equals(y))) {
251	<	threadFailed = true;
797	>	try {
798		assertEquals(x, y);
799	+	} catch (AssertionFailedError fail) {
800	+	threadRecordFailure(fail);
801	+	throw fail;
802	+	} catch (Throwable fail) {
803	+	threadUnexpectedException(fail);
804		}
805		}
806
807		/**
808	<	* threadFail with message "should throw exception"
809	<	*/
808	>	* Just like assertSame(x, y), but additionally recording (using
809	>	* threadRecordFailure) any AssertionFailedError thrown, so that
810	>	* the current testcase will fail.
811	>	*/
812	>	public void threadAssertSame(Object x, Object y) {
813	>	try {
814	>	assertSame(x, y);
815	>	} catch (AssertionFailedError fail) {
816	>	threadRecordFailure(fail);
817	>	throw fail;
818	>	}
819	>	}
820	>
821	>	/**
822	>	* Calls threadFail with message "should throw exception".
823	>	*/
824		public void threadShouldThrow() {
825	<	threadFailed = true;
826	<	fail("should throw exception");
825	>	threadFail("should throw exception");
826	>	}
827	>
828	>	/**
829	>	* Calls threadFail with message "should throw" + exceptionName.
830	>	*/
831	>	public void threadShouldThrow(String exceptionName) {
832	>	threadFail("should throw " + exceptionName);
833	>	}
834	>
835	>	/**
836	>	* Records the given exception using {@link #threadRecordFailure},
837	>	* then rethrows the exception, wrapping it in an
838	>	* AssertionFailedError if necessary.
839	>	*/
840	>	public void threadUnexpectedException(Throwable t) {
841	>	threadRecordFailure(t);
842	>	t.printStackTrace();
843	>	if (t instanceof RuntimeException)
844	>	throw (RuntimeException) t;
845	>	else if (t instanceof Error)
846	>	throw (Error) t;
847	>	else {
848	>	AssertionFailedError afe =
849	>	new AssertionFailedError("unexpected exception: " + t);
850	>	afe.initCause(t);
851	>	throw afe;
852	>	}
853	>	}
854	>
855	>	/**
856	>	* Delays, via Thread.sleep, for the given millisecond delay, but
857	>	* if the sleep is shorter than specified, may re-sleep or yield
858	>	* until time elapses.  Ensures that the given time, as measured
859	>	* by System.nanoTime(), has elapsed.
860	>	*/
861	>	static void delay(long millis) throws InterruptedException {
862	>	long nanos = millis * (1000 * 1000);
863	>	final long wakeupTime = System.nanoTime() + nanos;
864	>	do {
865	>	if (millis > 0L)
866	>	Thread.sleep(millis);
867	>	else // too short to sleep
868	>	Thread.yield();
869	>	nanos = wakeupTime - System.nanoTime();
870	>	millis = nanos / (1000 * 1000);
871	>	} while (nanos >= 0L);
872	>	}
873	>
874	>	/**
875	>	* Allows use of try-with-resources with per-test thread pools.
876	>	*/
877	>	class PoolCleaner implements AutoCloseable {
878	>	private final ExecutorService pool;
879	>	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
880	>	public void close() { joinPool(pool); }
881	>	}
882	>
883	>	/**
884	>	* An extension of PoolCleaner that has an action to release the pool.
885	>	*/
886	>	class PoolCleanerWithReleaser extends PoolCleaner {
887	>	private final Runnable releaser;
888	>	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
889	>	super(pool);
890	>	this.releaser = releaser;
891	>	}
892	>	public void close() {
893	>	try {
894	>	releaser.run();
895	>	} finally {
896	>	super.close();
897	>	}
898	>	}
899	>	}
900	>
901	>	PoolCleaner cleaner(ExecutorService pool) {
902	>	return new PoolCleaner(pool);
903	>	}
904	>
905	>	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
906	>	return new PoolCleanerWithReleaser(pool, releaser);
907	>	}
908	>
909	>	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
910	>	return new PoolCleanerWithReleaser(pool, releaser(latch));
911	>	}
912	>
913	>	Runnable releaser(final CountDownLatch latch) {
914	>	return new Runnable() { public void run() {
915	>	do { latch.countDown(); }
916	>	while (latch.getCount() > 0);
917	>	}};
918	>	}
919	>
920	>	PoolCleaner cleaner(ExecutorService pool, AtomicBoolean flag) {
921	>	return new PoolCleanerWithReleaser(pool, releaser(flag));
922	>	}
923	>
924	>	Runnable releaser(final AtomicBoolean flag) {
925	>	return new Runnable() { public void run() { flag.set(true); }};
926		}
927
928		/**
929	<	* threadFail with message "Unexpected exception"
929	>	* Waits out termination of a thread pool or fails doing so.
930		*/
931	<	public void threadUnexpectedException() {
932	<	threadFailed = true;
933	<	fail("Unexpected exception");
931	>	void joinPool(ExecutorService pool) {
932	>	try {
933	>	pool.shutdown();
934	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
935	>	try {
936	>	threadFail("ExecutorService " + pool +
937	>	" did not terminate in a timely manner");
938	>	} finally {
939	>	// last resort, for the benefit of subsequent tests
940	>	pool.shutdownNow();
941	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
942	>	}
943	>	}
944	>	} catch (SecurityException ok) {
945	>	// Allowed in case test doesn't have privs
946	>	} catch (InterruptedException fail) {
947	>	threadFail("Unexpected InterruptedException");
948	>	}
949	>	}
950	>
951	>	/** Like Runnable, but with the freedom to throw anything */
952	>	interface Action { public void run() throws Throwable; }
953	>
954	>	/**
955	>	* Runs all the given actions in parallel, failing if any fail.
956	>	* Useful for running multiple variants of tests that are
957	>	* necessarily individually slow because they must block.
958	>	*/
959	>	void testInParallel(Action ... actions) {
960	>	ExecutorService pool = Executors.newCachedThreadPool();
961	>	try (PoolCleaner cleaner = cleaner(pool)) {
962	>	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
963	>	for (final Action action : actions)
964	>	futures.add(pool.submit(new CheckedRunnable() {
965	>	public void realRun() throws Throwable { action.run();}}));
966	>	for (Future<?> future : futures)
967	>	try {
968	>	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
969	>	} catch (ExecutionException ex) {
970	>	threadUnexpectedException(ex.getCause());
971	>	} catch (Exception ex) {
972	>	threadUnexpectedException(ex);
973	>	}
974	>	}
975		}
976
977	+	/**
978	+	* A debugging tool to print stack traces of most threads, as jstack does.
979	+	* Uninteresting threads are filtered out.
980	+	*/
981	+	static void dumpTestThreads() {
982	+	SecurityManager sm = System.getSecurityManager();
983	+	if (sm != null) {
984	+	try {
985	+	System.setSecurityManager(null);
986	+	} catch (SecurityException giveUp) {
987	+	return;
988	+	}
989	+	}
990	+
991	+	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
992	+	System.err.println("------ stacktrace dump start ------");
993	+	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
994	+	String name = info.getThreadName();
995	+	if ("Signal Dispatcher".equals(name))
996	+	continue;
997	+	if ("Reference Handler".equals(name)
998	+	&& info.getLockName().startsWith("java.lang.ref.Reference$Lock"))
999	+	continue;
1000	+	if ("Finalizer".equals(name)
1001	+	&& info.getLockName().startsWith("java.lang.ref.ReferenceQueue$Lock"))
1002	+	continue;
1003	+	if ("checkForWedgedTest".equals(name))
1004	+	continue;
1005	+	System.err.print(info);
1006	+	}
1007	+	System.err.println("------ stacktrace dump end ------");
1008	+
1009	+	if (sm != null) System.setSecurityManager(sm);
1010	+	}
1011	+
1012	+	/**
1013	+	* Checks that thread does not terminate within the default
1014	+	* millisecond delay of {@code timeoutMillis()}.
1015	+	*/
1016	+	void assertThreadStaysAlive(Thread thread) {
1017	+	assertThreadStaysAlive(thread, timeoutMillis());
1018	+	}
1019
1020		/**
1021	<	* Wait out termination of a thread pool or fail doing so
1021	>	* Checks that thread does not terminate within the given millisecond delay.
1022		*/
1023	<	public void joinPool(ExecutorService exec) {
1023	>	void assertThreadStaysAlive(Thread thread, long millis) {
1024		try {
1025	<	exec.shutdown();
1026	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
1027	<	} catch(InterruptedException ie) {
1028	<	fail("Unexpected exception");
1025	>	// No need to optimize the failing case via Thread.join.
1026	>	delay(millis);
1027	>	assertTrue(thread.isAlive());
1028	>	} catch (InterruptedException fail) {
1029	>	threadFail("Unexpected InterruptedException");
1030		}
1031		}
1032
1033	+	/**
1034	+	* Checks that the threads do not terminate within the default
1035	+	* millisecond delay of {@code timeoutMillis()}.
1036	+	*/
1037	+	void assertThreadsStayAlive(Thread... threads) {
1038	+	assertThreadsStayAlive(timeoutMillis(), threads);
1039	+	}
1040	+
1041	+	/**
1042	+	* Checks that the threads do not terminate within the given millisecond delay.
1043	+	*/
1044	+	void assertThreadsStayAlive(long millis, Thread... threads) {
1045	+	try {
1046	+	// No need to optimize the failing case via Thread.join.
1047	+	delay(millis);
1048	+	for (Thread thread : threads)
1049	+	assertTrue(thread.isAlive());
1050	+	} catch (InterruptedException fail) {
1051	+	threadFail("Unexpected InterruptedException");
1052	+	}
1053	+	}
1054	+
1055	+	/**
1056	+	* Checks that future.get times out, with the default timeout of
1057	+	* {@code timeoutMillis()}.
1058	+	*/
1059	+	void assertFutureTimesOut(Future future) {
1060	+	assertFutureTimesOut(future, timeoutMillis());
1061	+	}
1062
1063		/**
1064	<	* fail with message "should throw exception"
1065	<	*/
1064	>	* Checks that future.get times out, with the given millisecond timeout.
1065	>	*/
1066	>	void assertFutureTimesOut(Future future, long timeoutMillis) {
1067	>	long startTime = System.nanoTime();
1068	>	try {
1069	>	future.get(timeoutMillis, MILLISECONDS);
1070	>	shouldThrow();
1071	>	} catch (TimeoutException success) {
1072	>	} catch (Exception fail) {
1073	>	threadUnexpectedException(fail);
1074	>	} finally { future.cancel(true); }
1075	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
1076	>	}
1077	>
1078	>	/**
1079	>	* Fails with message "should throw exception".
1080	>	*/
1081		public void shouldThrow() {
1082		fail("Should throw exception");
1083		}
1084
1085		/**
1086	<	* fail with message "Unexpected exception"
1086	>	* Fails with message "should throw " + exceptionName.
1087		*/
1088	<	public void unexpectedException() {
1089	<	fail("Unexpected exception");
1088	>	public void shouldThrow(String exceptionName) {
1089	>	fail("Should throw " + exceptionName);
1090		}
1091
300	–
1092		/**
1093		* The number of elements to place in collections, arrays, etc.
1094		*/
1095	<	static final int SIZE = 20;
1095	>	public static final int SIZE = 20;
1096
1097		// Some convenient Integer constants
1098
1099	<	static final Integer zero = new Integer(0);
1100	<	static final Integer one = new Integer(1);
1101	<	static final Integer two = new Integer(2);
1102	<	static final Integer three  = new Integer(3);
1103	<	static final Integer four  = new Integer(4);
1104	<	static final Integer five  = new Integer(5);
1105	<	static final Integer six = new Integer(6);
1106	<	static final Integer seven = new Integer(7);
1107	<	static final Integer eight = new Integer(8);
1108	<	static final Integer nine = new Integer(9);
1109	<	static final Integer m1  = new Integer(-1);
1110	<	static final Integer m2  = new Integer(-2);
1111	<	static final Integer m3  = new Integer(-3);
1112	<	static final Integer m4 = new Integer(-4);
1113	<	static final Integer m5 = new Integer(-5);
1114	<	static final Integer m10 = new Integer(-10);
1099	>	public static final Integer zero  = new Integer(0);
1100	>	public static final Integer one   = new Integer(1);
1101	>	public static final Integer two   = new Integer(2);
1102	>	public static final Integer three = new Integer(3);
1103	>	public static final Integer four  = new Integer(4);
1104	>	public static final Integer five  = new Integer(5);
1105	>	public static final Integer six   = new Integer(6);
1106	>	public static final Integer seven = new Integer(7);
1107	>	public static final Integer eight = new Integer(8);
1108	>	public static final Integer nine  = new Integer(9);
1109	>	public static final Integer m1  = new Integer(-1);
1110	>	public static final Integer m2  = new Integer(-2);
1111	>	public static final Integer m3  = new Integer(-3);
1112	>	public static final Integer m4  = new Integer(-4);
1113	>	public static final Integer m5  = new Integer(-5);
1114	>	public static final Integer m6  = new Integer(-6);
1115	>	public static final Integer m10 = new Integer(-10);
1116	>
1117	>	/**
1118	>	* Runs Runnable r with a security policy that permits precisely
1119	>	* the specified permissions.  If there is no current security
1120	>	* manager, the runnable is run twice, both with and without a
1121	>	* security manager.  We require that any security manager permit
1122	>	* getPolicy/setPolicy.
1123	>	*/
1124	>	public void runWithPermissions(Runnable r, Permission... permissions) {
1125	>	SecurityManager sm = System.getSecurityManager();
1126	>	if (sm == null) {
1127	>	r.run();
1128	>	}
1129	>	runWithSecurityManagerWithPermissions(r, permissions);
1130	>	}
1131
1132	+	/**
1133	+	* Runs Runnable r with a security policy that permits precisely
1134	+	* the specified permissions.  If there is no current security
1135	+	* manager, a temporary one is set for the duration of the
1136	+	* Runnable.  We require that any security manager permit
1137	+	* getPolicy/setPolicy.
1138	+	*/
1139	+	public void runWithSecurityManagerWithPermissions(Runnable r,
1140	+	Permission... permissions) {
1141	+	SecurityManager sm = System.getSecurityManager();
1142	+	if (sm == null) {
1143	+	Policy savedPolicy = Policy.getPolicy();
1144	+	try {
1145	+	Policy.setPolicy(permissivePolicy());
1146	+	System.setSecurityManager(new SecurityManager());
1147	+	runWithSecurityManagerWithPermissions(r, permissions);
1148	+	} finally {
1149	+	System.setSecurityManager(null);
1150	+	Policy.setPolicy(savedPolicy);
1151	+	}
1152	+	} else {
1153	+	Policy savedPolicy = Policy.getPolicy();
1154	+	AdjustablePolicy policy = new AdjustablePolicy(permissions);
1155	+	Policy.setPolicy(policy);
1156	+
1157	+	try {
1158	+	r.run();
1159	+	} finally {
1160	+	policy.addPermission(new SecurityPermission("setPolicy"));
1161	+	Policy.setPolicy(savedPolicy);
1162	+	}
1163	+	}
1164	+	}
1165	+
1166	+	/**
1167	+	* Runs a runnable without any permissions.
1168	+	*/
1169	+	public void runWithoutPermissions(Runnable r) {
1170	+	runWithPermissions(r);
1171	+	}
1172
1173		/**
1174		* A security policy where new permissions can be dynamically added
1175		* or all cleared.
1176		*/
1177	<	static class AdjustablePolicy extends java.security.Policy {
1177	>	public static class AdjustablePolicy extends java.security.Policy {
1178		Permissions perms = new Permissions();
1179	<	AdjustablePolicy() { }
1179	>	AdjustablePolicy(Permission... permissions) {
1180	>	for (Permission permission : permissions)
1181	>	perms.add(permission);
1182	>	}
1183		void addPermission(Permission perm) { perms.add(perm); }
1184		void clearPermissions() { perms = new Permissions(); }
1185	<	public PermissionCollection getPermissions(CodeSource cs) {
1186	<	return perms;
1187	<	}
1188	<	public PermissionCollection getPermissions(ProtectionDomain pd) {
1189	<	return perms;
1190	<	}
1191	<	public boolean implies(ProtectionDomain pd, Permission p) {
1192	<	return perms.implies(p);
1193	<	}
1194	<	public void refresh() {}
1185	>	public PermissionCollection getPermissions(CodeSource cs) {
1186	>	return perms;
1187	>	}
1188	>	public PermissionCollection getPermissions(ProtectionDomain pd) {
1189	>	return perms;
1190	>	}
1191	>	public boolean implies(ProtectionDomain pd, Permission p) {
1192	>	return perms.implies(p);
1193	>	}
1194	>	public void refresh() {}
1195	>	public String toString() {
1196	>	List<Permission> ps = new ArrayList<Permission>();
1197	>	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1198	>	ps.add(e.nextElement());
1199	>	return "AdjustablePolicy with permissions " + ps;
1200	>	}
1201		}
1202
1203	+	/**
1204	+	* Returns a policy containing all the permissions we ever need.
1205	+	*/
1206	+	public static Policy permissivePolicy() {
1207	+	return new AdjustablePolicy
1208	+	// Permissions j.u.c. needs directly
1209	+	(new RuntimePermission("modifyThread"),
1210	+	new RuntimePermission("getClassLoader"),
1211	+	new RuntimePermission("setContextClassLoader"),
1212	+	// Permissions needed to change permissions!
1213	+	new SecurityPermission("getPolicy"),
1214	+	new SecurityPermission("setPolicy"),
1215	+	new RuntimePermission("setSecurityManager"),
1216	+	// Permissions needed by the junit test harness
1217	+	new RuntimePermission("accessDeclaredMembers"),
1218	+	new PropertyPermission("*", "read"),
1219	+	new java.io.FilePermission("<<ALL FILES>>", "read"));
1220	+	}
1221
1222	<	// Some convenient Runnable classes
1222	>	/**
1223	>	* Sleeps until the given time has elapsed.
1224	>	* Throws AssertionFailedError if interrupted.
1225	>	*/
1226	>	void sleep(long millis) {
1227	>	try {
1228	>	delay(millis);
1229	>	} catch (InterruptedException fail) {
1230	>	AssertionFailedError afe =
1231	>	new AssertionFailedError("Unexpected InterruptedException");
1232	>	afe.initCause(fail);
1233	>	throw afe;
1234	>	}
1235	>	}
1236
1237	<	static class NoOpRunnable implements Runnable {
1238	<	public void run() {}
1237	>	/**
1238	>	* Spin-waits up to the specified number of milliseconds for the given
1239	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1240	>	*/
1241	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1242	>	long startTime = System.nanoTime();
1243	>	for (;;) {
1244	>	Thread.State s = thread.getState();
1245	>	if (s == Thread.State.BLOCKED ||
1246	>	s == Thread.State.WAITING ||
1247	>	s == Thread.State.TIMED_WAITING)
1248	>	return;
1249	>	else if (s == Thread.State.TERMINATED)
1250	>	fail("Unexpected thread termination");
1251	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1252	>	threadAssertTrue(thread.isAlive());
1253	>	return;
1254	>	}
1255	>	Thread.yield();
1256	>	}
1257		}
1258
1259	<	static class NoOpCallable implements Callable {
1260	<	public Object call() { return Boolean.TRUE; }
1259	>	/**
1260	>	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
1261	>	* state: BLOCKED, WAITING, or TIMED_WAITING.
1262	>	*/
1263	>	void waitForThreadToEnterWaitState(Thread thread) {
1264	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
1265		}
1266
1267	<	static final String TEST_STRING = "a test string";
1267	>	/**
1268	>	* Returns the number of milliseconds since time given by
1269	>	* startNanoTime, which must have been previously returned from a
1270	>	* call to {@link System#nanoTime()}.
1271	>	*/
1272	>	static long millisElapsedSince(long startNanoTime) {
1273	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1274	>	}
1275
1276	<	static class StringTask implements Callable<String> {
1277	<	public String call() { return TEST_STRING; }
1276	>	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1277	>	//         long startTime = System.nanoTime();
1278	>	//         try {
1279	>	//             r.run();
1280	>	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1281	>	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1282	>	//             throw new AssertionFailedError("did not return promptly");
1283	>	//     }
1284	>
1285	>	//     void assertTerminatesPromptly(Runnable r) {
1286	>	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1287	>	//     }
1288	>
1289	>	/**
1290	>	* Checks that timed f.get() returns the expected value, and does not
1291	>	* wait for the timeout to elapse before returning.
1292	>	*/
1293	>	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1294	>	long startTime = System.nanoTime();
1295	>	try {
1296	>	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1297	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1298	>	if (millisElapsedSince(startTime) > timeoutMillis/2)
1299	>	throw new AssertionFailedError("timed get did not return promptly");
1300		}
1301
1302	<	static class NPETask implements Callable<String> {
1303	<	public String call() { throw new NullPointerException(); }
1302	>	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1303	>	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1304		}
1305
1306	<	static class CallableOne implements Callable<Integer> {
1307	<	public Integer call() { return one; }
1306	>	/**
1307	>	* Returns a new started daemon Thread running the given runnable.
1308	>	*/
1309	>	Thread newStartedThread(Runnable runnable) {
1310	>	Thread t = new Thread(runnable);
1311	>	t.setDaemon(true);
1312	>	t.start();
1313	>	return t;
1314		}
1315
1316	<	class ShortRunnable implements Runnable {
1317	<	public void run() {
1318	<	try {
1319	<	Thread.sleep(SHORT_DELAY_MS);
1320	<	}
1321	<	catch(Exception e) {
1322	<	threadUnexpectedException();
1316	>	/**
1317	>	* Waits for the specified time (in milliseconds) for the thread
1318	>	* to terminate (using {@link Thread#join(long)}), else interrupts
1319	>	* the thread (in the hope that it may terminate later) and fails.
1320	>	*/
1321	>	void awaitTermination(Thread t, long timeoutMillis) {
1322	>	try {
1323	>	t.join(timeoutMillis);
1324	>	} catch (InterruptedException fail) {
1325	>	threadUnexpectedException(fail);
1326	>	} finally {
1327	>	if (t.getState() != Thread.State.TERMINATED) {
1328	>	t.interrupt();
1329	>	threadFail("timed out waiting for thread to terminate");
1330		}
1331		}
1332		}
1333
1334	<	class ShortInterruptedRunnable implements Runnable {
1335	<	public void run() {
1334	>	/**
1335	>	* Waits for LONG_DELAY_MS milliseconds for the thread to
1336	>	* terminate (using {@link Thread#join(long)}), else interrupts
1337	>	* the thread (in the hope that it may terminate later) and fails.
1338	>	*/
1339	>	void awaitTermination(Thread t) {
1340	>	awaitTermination(t, LONG_DELAY_MS);
1341	>	}
1342	>
1343	>	// Some convenient Runnable classes
1344	>
1345	>	public abstract class CheckedRunnable implements Runnable {
1346	>	protected abstract void realRun() throws Throwable;
1347	>
1348	>	public final void run() {
1349		try {
1350	<	Thread.sleep(SHORT_DELAY_MS);
1351	<	threadShouldThrow();
1352	<	}
389	<	catch(InterruptedException success) {
1350	>	realRun();
1351	>	} catch (Throwable fail) {
1352	>	threadUnexpectedException(fail);
1353		}
1354		}
1355		}
1356
1357	<	class SmallRunnable implements Runnable {
1358	<	public void run() {
1357	>	public abstract class RunnableShouldThrow implements Runnable {
1358	>	protected abstract void realRun() throws Throwable;
1359	>
1360	>	final Class<?> exceptionClass;
1361	>
1362	>	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
1363	>	this.exceptionClass = exceptionClass;
1364	>	}
1365	>
1366	>	public final void run() {
1367		try {
1368	<	Thread.sleep(SMALL_DELAY_MS);
1369	<	}
1370	<	catch(Exception e) {
1371	<	threadUnexpectedException();
1368	>	realRun();
1369	>	threadShouldThrow(exceptionClass.getSimpleName());
1370	>	} catch (Throwable t) {
1371	>	if (! exceptionClass.isInstance(t))
1372	>	threadUnexpectedException(t);
1373		}
1374		}
1375		}
1376
1377	<	class SmallPossiblyInterruptedRunnable implements Runnable {
1378	<	public void run() {
1377	>	public abstract class ThreadShouldThrow extends Thread {
1378	>	protected abstract void realRun() throws Throwable;
1379	>
1380	>	final Class<?> exceptionClass;
1381	>
1382	>	<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) {
1383	>	this.exceptionClass = exceptionClass;
1384	>	}
1385	>
1386	>	public final void run() {
1387		try {
1388	<	Thread.sleep(SMALL_DELAY_MS);
1389	<	}
1390	<	catch(Exception e) {
1388	>	realRun();
1389	>	threadShouldThrow(exceptionClass.getSimpleName());
1390	>	} catch (Throwable t) {
1391	>	if (! exceptionClass.isInstance(t))
1392	>	threadUnexpectedException(t);
1393		}
1394		}
1395		}
1396
1397	<	class SmallCallable implements Callable {
1398	<	public Object call() {
1397	>	public abstract class CheckedInterruptedRunnable implements Runnable {
1398	>	protected abstract void realRun() throws Throwable;
1399	>
1400	>	public final void run() {
1401		try {
1402	<	Thread.sleep(SMALL_DELAY_MS);
1402	>	realRun();
1403	>	threadShouldThrow("InterruptedException");
1404	>	} catch (InterruptedException success) {
1405	>	threadAssertFalse(Thread.interrupted());
1406	>	} catch (Throwable fail) {
1407	>	threadUnexpectedException(fail);
1408		}
420	–	catch(Exception e) {
421	–	threadUnexpectedException();
422	–	}
423	–	return Boolean.TRUE;
1409		}
1410		}
1411
1412	<	class SmallInterruptedRunnable implements Runnable {
1413	<	public void run() {
1412	>	public abstract class CheckedCallable<T> implements Callable<T> {
1413	>	protected abstract T realCall() throws Throwable;
1414	>
1415	>	public final T call() {
1416		try {
1417	<	Thread.sleep(SMALL_DELAY_MS);
1418	<	threadShouldThrow();
1419	<	}
1420	<	catch(InterruptedException success) {
1417	>	return realCall();
1418	>	} catch (Throwable fail) {
1419	>	threadUnexpectedException(fail);
1420	>	return null;
1421		}
1422		}
1423		}
1424
1425	+	public abstract class CheckedInterruptedCallable<T>
1426	+	implements Callable<T> {
1427	+	protected abstract T realCall() throws Throwable;
1428
1429	<	class MediumRunnable implements Runnable {
440	<	public void run() {
1429	>	public final T call() {
1430		try {
1431	<	Thread.sleep(MEDIUM_DELAY_MS);
1432	<	}
1433	<	catch(Exception e) {
1434	<	threadUnexpectedException();
1431	>	T result = realCall();
1432	>	threadShouldThrow("InterruptedException");
1433	>	return result;
1434	>	} catch (InterruptedException success) {
1435	>	threadAssertFalse(Thread.interrupted());
1436	>	} catch (Throwable fail) {
1437	>	threadUnexpectedException(fail);
1438		}
1439	+	return null;
1440		}
1441		}
1442
1443	<	class MediumInterruptedRunnable implements Runnable {
1444	<	public void run() {
1443	>	public static class NoOpRunnable implements Runnable {
1444	>	public void run() {}
1445	>	}
1446	>
1447	>	public static class NoOpCallable implements Callable {
1448	>	public Object call() { return Boolean.TRUE; }
1449	>	}
1450	>
1451	>	public static final String TEST_STRING = "a test string";
1452	>
1453	>	public static class StringTask implements Callable<String> {
1454	>	final String value;
1455	>	public StringTask() { this(TEST_STRING); }
1456	>	public StringTask(String value) { this.value = value; }
1457	>	public String call() { return value; }
1458	>	}
1459	>
1460	>	public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1461	>	return new CheckedCallable<String>() {
1462	>	protected String realCall() {
1463	>	try {
1464	>	latch.await();
1465	>	} catch (InterruptedException quittingTime) {}
1466	>	return TEST_STRING;
1467	>	}};
1468	>	}
1469	>
1470	>	public Runnable countDowner(final CountDownLatch latch) {
1471	>	return new CheckedRunnable() {
1472	>	public void realRun() throws InterruptedException {
1473	>	latch.countDown();
1474	>	}};
1475	>	}
1476	>
1477	>	class LatchAwaiter extends CheckedRunnable {
1478	>	static final int NEW = 0;
1479	>	static final int RUNNING = 1;
1480	>	static final int DONE = 2;
1481	>	final CountDownLatch latch;
1482	>	int state = NEW;
1483	>	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1484	>	public void realRun() throws InterruptedException {
1485	>	state = 1;
1486	>	await(latch);
1487	>	state = 2;
1488	>	}
1489	>	}
1490	>
1491	>	public LatchAwaiter awaiter(CountDownLatch latch) {
1492	>	return new LatchAwaiter(latch);
1493	>	}
1494	>
1495	>	public void await(CountDownLatch latch, long timeoutMillis) {
1496	>	try {
1497	>	if (!latch.await(timeoutMillis, MILLISECONDS))
1498	>	fail("timed out waiting for CountDownLatch for "
1499	>	+ (timeoutMillis/1000) + " sec");
1500	>	} catch (Throwable fail) {
1501	>	threadUnexpectedException(fail);
1502	>	}
1503	>	}
1504	>
1505	>	public void await(CountDownLatch latch) {
1506	>	await(latch, LONG_DELAY_MS);
1507	>	}
1508	>
1509	>	public void await(Semaphore semaphore) {
1510	>	try {
1511	>	if (!semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS))
1512	>	fail("timed out waiting for Semaphore for "
1513	>	+ (LONG_DELAY_MS/1000) + " sec");
1514	>	} catch (Throwable fail) {
1515	>	threadUnexpectedException(fail);
1516	>	}
1517	>	}
1518	>
1519	>	//     /**
1520	>	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1521	>	//      */
1522	>	//     public void await(AtomicBoolean flag) {
1523	>	//         await(flag, LONG_DELAY_MS);
1524	>	//     }
1525	>
1526	>	//     /**
1527	>	//      * Spin-waits up to the specified timeout until flag becomes true.
1528	>	//      */
1529	>	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1530	>	//         long startTime = System.nanoTime();
1531	>	//         while (!flag.get()) {
1532	>	//             if (millisElapsedSince(startTime) > timeoutMillis)
1533	>	//                 throw new AssertionFailedError("timed out");
1534	>	//             Thread.yield();
1535	>	//         }
1536	>	//     }
1537	>
1538	>	public static class NPETask implements Callable<String> {
1539	>	public String call() { throw new NullPointerException(); }
1540	>	}
1541	>
1542	>	public static class CallableOne implements Callable<Integer> {
1543	>	public Integer call() { return one; }
1544	>	}
1545	>
1546	>	public class ShortRunnable extends CheckedRunnable {
1547	>	protected void realRun() throws Throwable {
1548	>	delay(SHORT_DELAY_MS);
1549	>	}
1550	>	}
1551	>
1552	>	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1553	>	protected void realRun() throws InterruptedException {
1554	>	delay(SHORT_DELAY_MS);
1555	>	}
1556	>	}
1557	>
1558	>	public class SmallRunnable extends CheckedRunnable {
1559	>	protected void realRun() throws Throwable {
1560	>	delay(SMALL_DELAY_MS);
1561	>	}
1562	>	}
1563	>
1564	>	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1565	>	protected void realRun() {
1566		try {
1567	<	Thread.sleep(MEDIUM_DELAY_MS);
1568	<	threadShouldThrow();
455	<	}
456	<	catch(InterruptedException success) {
457	<	}
1567	>	delay(SMALL_DELAY_MS);
1568	>	} catch (InterruptedException ok) {}
1569		}
1570		}
1571
1572	<	class MediumPossiblyInterruptedRunnable implements Runnable {
1573	<	public void run() {
1572	>	public class SmallCallable extends CheckedCallable {
1573	>	protected Object realCall() throws InterruptedException {
1574	>	delay(SMALL_DELAY_MS);
1575	>	return Boolean.TRUE;
1576	>	}
1577	>	}
1578	>
1579	>	public class MediumRunnable extends CheckedRunnable {
1580	>	protected void realRun() throws Throwable {
1581	>	delay(MEDIUM_DELAY_MS);
1582	>	}
1583	>	}
1584	>
1585	>	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1586	>	protected void realRun() throws InterruptedException {
1587	>	delay(MEDIUM_DELAY_MS);
1588	>	}
1589	>	}
1590	>
1591	>	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1592	>	return new CheckedRunnable() {
1593	>	protected void realRun() {
1594	>	try {
1595	>	delay(timeoutMillis);
1596	>	} catch (InterruptedException ok) {}
1597	>	}};
1598	>	}
1599	>
1600	>	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1601	>	protected void realRun() {
1602		try {
1603	<	Thread.sleep(MEDIUM_DELAY_MS);
1604	<	}
466	<	catch(InterruptedException success) {
467	<	}
1603	>	delay(MEDIUM_DELAY_MS);
1604	>	} catch (InterruptedException ok) {}
1605		}
1606		}
1607
1608	<	class LongPossiblyInterruptedRunnable implements Runnable {
1609	<	public void run() {
1608	>	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1609	>	protected void realRun() {
1610		try {
1611	<	Thread.sleep(LONG_DELAY_MS);
1612	<	}
476	<	catch(InterruptedException success) {
477	<	}
1611	>	delay(LONG_DELAY_MS);
1612	>	} catch (InterruptedException ok) {}
1613		}
1614		}
1615
1616		/**
1617		* For use as ThreadFactory in constructors
1618		*/
1619	<	static class SimpleThreadFactory implements ThreadFactory{
1620	<	public Thread newThread(Runnable r){
1619	>	public static class SimpleThreadFactory implements ThreadFactory {
1620	>	public Thread newThread(Runnable r) {
1621		return new Thread(r);
1622	<	}
1622	>	}
1623	>	}
1624	>
1625	>	public interface TrackedRunnable extends Runnable {
1626	>	boolean isDone();
1627		}
1628
1629	<	static class TrackedShortRunnable implements Runnable {
1630	<	volatile boolean done = false;
1629	>	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1630	>	return new TrackedRunnable() {
1631	>	private volatile boolean done = false;
1632	>	public boolean isDone() { return done; }
1633	>	public void run() {
1634	>	try {
1635	>	delay(timeoutMillis);
1636	>	done = true;
1637	>	} catch (InterruptedException ok) {}
1638	>	}
1639	>	};
1640	>	}
1641	>
1642	>	public static class TrackedShortRunnable implements Runnable {
1643	>	public volatile boolean done = false;
1644		public void run() {
1645		try {
1646	<	Thread.sleep(SMALL_DELAY_MS);
1646	>	delay(SHORT_DELAY_MS);
1647		done = true;
1648	<	} catch(Exception e){
497	<	}
1648	>	} catch (InterruptedException ok) {}
1649		}
1650		}
1651
1652	<	static class TrackedMediumRunnable implements Runnable {
1653	<	volatile boolean done = false;
1652	>	public static class TrackedSmallRunnable implements Runnable {
1653	>	public volatile boolean done = false;
1654		public void run() {
1655		try {
1656	<	Thread.sleep(MEDIUM_DELAY_MS);
1656	>	delay(SMALL_DELAY_MS);
1657		done = true;
1658	<	} catch(Exception e){
508	<	}
1658	>	} catch (InterruptedException ok) {}
1659		}
1660		}
1661
1662	<	static class TrackedLongRunnable implements Runnable {
1663	<	volatile boolean done = false;
1662	>	public static class TrackedMediumRunnable implements Runnable {
1663	>	public volatile boolean done = false;
1664		public void run() {
1665		try {
1666	<	Thread.sleep(LONG_DELAY_MS);
1666	>	delay(MEDIUM_DELAY_MS);
1667		done = true;
1668	<	} catch(Exception e){
519	<	}
1668	>	} catch (InterruptedException ok) {}
1669		}
1670		}
1671
1672	<	static class TrackedNoOpRunnable implements Runnable {
1673	<	volatile boolean done = false;
1672	>	public static class TrackedLongRunnable implements Runnable {
1673	>	public volatile boolean done = false;
1674	>	public void run() {
1675	>	try {
1676	>	delay(LONG_DELAY_MS);
1677	>	done = true;
1678	>	} catch (InterruptedException ok) {}
1679	>	}
1680	>	}
1681	>
1682	>	public static class TrackedNoOpRunnable implements Runnable {
1683	>	public volatile boolean done = false;
1684		public void run() {
1685		done = true;
1686		}
1687		}
1688
1689	<	static class TrackedCallable implements Callable {
1690	<	volatile boolean done = false;
1689	>	public static class TrackedCallable implements Callable {
1690	>	public volatile boolean done = false;
1691		public Object call() {
1692		try {
1693	<	Thread.sleep(SMALL_DELAY_MS);
1693	>	delay(SMALL_DELAY_MS);
1694		done = true;
1695	<	} catch(Exception e){
537	<	}
1695	>	} catch (InterruptedException ok) {}
1696		return Boolean.TRUE;
1697		}
1698		}
1699
1700	+	/**
1701	+	* Analog of CheckedRunnable for RecursiveAction
1702	+	*/
1703	+	public abstract class CheckedRecursiveAction extends RecursiveAction {
1704	+	protected abstract void realCompute() throws Throwable;
1705	+
1706	+	@Override protected final void compute() {
1707	+	try {
1708	+	realCompute();
1709	+	} catch (Throwable fail) {
1710	+	threadUnexpectedException(fail);
1711	+	}
1712	+	}
1713	+	}
1714	+
1715	+	/**
1716	+	* Analog of CheckedCallable for RecursiveTask
1717	+	*/
1718	+	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1719	+	protected abstract T realCompute() throws Throwable;
1720	+
1721	+	@Override protected final T compute() {
1722	+	try {
1723	+	return realCompute();
1724	+	} catch (Throwable fail) {
1725	+	threadUnexpectedException(fail);
1726	+	return null;
1727	+	}
1728	+	}
1729	+	}
1730
1731		/**
1732		* For use as RejectedExecutionHandler in constructors
1733		*/
1734	<	static class NoOpREHandler implements RejectedExecutionHandler{
1735	<	public void rejectedExecution(Runnable r, ThreadPoolExecutor executor){}
1734	>	public static class NoOpREHandler implements RejectedExecutionHandler {
1735	>	public void rejectedExecution(Runnable r,
1736	>	ThreadPoolExecutor executor) {}
1737		}
1738	<
1739	<
1738	>
1739	>	/**
1740	>	* A CyclicBarrier that uses timed await and fails with
1741	>	* AssertionFailedErrors instead of throwing checked exceptions.
1742	>	*/
1743	>	public class CheckedBarrier extends CyclicBarrier {
1744	>	public CheckedBarrier(int parties) { super(parties); }
1745	>
1746	>	public int await() {
1747	>	try {
1748	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1749	>	} catch (TimeoutException timedOut) {
1750	>	throw new AssertionFailedError("timed out");
1751	>	} catch (Exception fail) {
1752	>	AssertionFailedError afe =
1753	>	new AssertionFailedError("Unexpected exception: " + fail);
1754	>	afe.initCause(fail);
1755	>	throw afe;
1756	>	}
1757	>	}
1758	>	}
1759	>
1760	>	void checkEmpty(BlockingQueue q) {
1761	>	try {
1762	>	assertTrue(q.isEmpty());
1763	>	assertEquals(0, q.size());
1764	>	assertNull(q.peek());
1765	>	assertNull(q.poll());
1766	>	assertNull(q.poll(0, MILLISECONDS));
1767	>	assertEquals(q.toString(), "[]");
1768	>	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1769	>	assertFalse(q.iterator().hasNext());
1770	>	try {
1771	>	q.element();
1772	>	shouldThrow();
1773	>	} catch (NoSuchElementException success) {}
1774	>	try {
1775	>	q.iterator().next();
1776	>	shouldThrow();
1777	>	} catch (NoSuchElementException success) {}
1778	>	try {
1779	>	q.remove();
1780	>	shouldThrow();
1781	>	} catch (NoSuchElementException success) {}
1782	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1783	>	}
1784	>
1785	>	void assertSerialEquals(Object x, Object y) {
1786	>	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1787	>	}
1788	>
1789	>	void assertNotSerialEquals(Object x, Object y) {
1790	>	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1791	>	}
1792	>
1793	>	byte[] serialBytes(Object o) {
1794	>	try {
1795	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1796	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1797	>	oos.writeObject(o);
1798	>	oos.flush();
1799	>	oos.close();
1800	>	return bos.toByteArray();
1801	>	} catch (Throwable fail) {
1802	>	threadUnexpectedException(fail);
1803	>	return new byte[0];
1804	>	}
1805	>	}
1806	>
1807	>	@SuppressWarnings("unchecked")
1808	>	<T> T serialClone(T o) {
1809	>	try {
1810	>	ObjectInputStream ois = new ObjectInputStream
1811	>	(new ByteArrayInputStream(serialBytes(o)));
1812	>	T clone = (T) ois.readObject();
1813	>	assertSame(o.getClass(), clone.getClass());
1814	>	return clone;
1815	>	} catch (Throwable fail) {
1816	>	threadUnexpectedException(fail);
1817	>	return null;
1818	>	}
1819	>	}
1820	>
1821	>	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1822	>	Runnable... throwingActions) {
1823	>	for (Runnable throwingAction : throwingActions) {
1824	>	boolean threw = false;
1825	>	try { throwingAction.run(); }
1826	>	catch (Throwable t) {
1827	>	threw = true;
1828	>	if (!expectedExceptionClass.isInstance(t)) {
1829	>	AssertionFailedError afe =
1830	>	new AssertionFailedError
1831	>	("Expected " + expectedExceptionClass.getName() +
1832	>	", got " + t.getClass().getName());
1833	>	afe.initCause(t);
1834	>	threadUnexpectedException(afe);
1835	>	}
1836	>	}
1837	>	if (!threw)
1838	>	shouldThrow(expectedExceptionClass.getName());
1839	>	}
1840	>	}
1841	>
1842	>	public void assertIteratorExhausted(Iterator<?> it) {
1843	>	try {
1844	>	it.next();
1845	>	shouldThrow();
1846	>	} catch (NoSuchElementException success) {}
1847	>	assertFalse(it.hasNext());
1848	>	}
1849	>
1850	>	public <T> Callable<T> callableThrowing(final Exception ex) {
1851	>	return new Callable<T>() { public T call() throws Exception { throw ex; }};
1852	>	}
1853	>
1854	>	public Runnable runnableThrowing(final RuntimeException ex) {
1855	>	return new Runnable() { public void run() { throw ex; }};
1856	>	}
1857	>
1858	>	/** A reusable thread pool to be shared by tests. */
1859	>	static final ExecutorService cachedThreadPool =
1860	>	new ThreadPoolExecutor(0, Integer.MAX_VALUE,
1861	>	1000L, MILLISECONDS,
1862	>	new SynchronousQueue<Runnable>());
1863	>
1864		}

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