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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.20 by dl, Sun Jan 11 23:20:21 2004 UTC vs.
Revision 1.193 by jsr166, Mon May 23 18:19:48 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	>	*/
16	>
17	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
18	>	import static java.util.concurrent.TimeUnit.MINUTES;
19	>	import static java.util.concurrent.TimeUnit.NANOSECONDS;
20	>
21	>	import java.io.ByteArrayInputStream;
22	>	import java.io.ByteArrayOutputStream;
23	>	import java.io.ObjectInputStream;
24	>	import java.io.ObjectOutputStream;
25	>	import java.lang.management.ManagementFactory;
26	>	import java.lang.management.ThreadInfo;
27	>	import java.lang.management.ThreadMXBean;
28	>	import java.lang.reflect.Constructor;
29	>	import java.lang.reflect.Method;
30	>	import java.lang.reflect.Modifier;
31	>	import java.nio.file.Files;
32	>	import java.nio.file.Paths;
33	>	import java.security.CodeSource;
34	>	import java.security.Permission;
35	>	import java.security.PermissionCollection;
36	>	import java.security.Permissions;
37	>	import java.security.Policy;
38	>	import java.security.ProtectionDomain;
39	>	import java.security.SecurityPermission;
40	>	import java.util.ArrayList;
41	>	import java.util.Arrays;
42	>	import java.util.Date;
43	>	import java.util.Enumeration;
44	>	import java.util.Iterator;
45	>	import java.util.List;
46	>	import java.util.NoSuchElementException;
47	>	import java.util.PropertyPermission;
48	>	import java.util.concurrent.BlockingQueue;
49	>	import java.util.concurrent.Callable;
50	>	import java.util.concurrent.CountDownLatch;
51	>	import java.util.concurrent.CyclicBarrier;
52	>	import java.util.concurrent.ExecutionException;
53	>	import java.util.concurrent.Executors;
54	>	import java.util.concurrent.ExecutorService;
55	>	import java.util.concurrent.ForkJoinPool;
56	>	import java.util.concurrent.Future;
57	>	import java.util.concurrent.RecursiveAction;
58	>	import java.util.concurrent.RecursiveTask;
59	>	import java.util.concurrent.RejectedExecutionHandler;
60	>	import java.util.concurrent.Semaphore;
61	>	import java.util.concurrent.SynchronousQueue;
62	>	import java.util.concurrent.ThreadFactory;
63	>	import java.util.concurrent.ThreadPoolExecutor;
64	>	import java.util.concurrent.TimeoutException;
65	>	import java.util.concurrent.atomic.AtomicBoolean;
66	>	import java.util.concurrent.atomic.AtomicReference;
67	>	import java.util.regex.Matcher;
68	>	import java.util.regex.Pattern;
69	>
70	>	import junit.framework.AssertionFailedError;
71	>	import junit.framework.Test;
72	>	import junit.framework.TestCase;
73	>	import junit.framework.TestResult;
74	>	import junit.framework.TestSuite;
75
76		/**
77		* Base class for JSR166 Junit TCK tests.  Defines some constants,
78		* utility methods and classes, as well as a simple framework for
79		* helping to make sure that assertions failing in generated threads
80		* cause the associated test that generated them to itself fail (which
81	<	* JUnit doe not otherwise arrange).  The rules for creating such
81	>	* JUnit does not otherwise arrange).  The rules for creating such
82		* tests are:
83		*
84		* <ol>
85		*
86	<	* <li> All assertions in code running in generated threads must use
87	<	* the forms {@link #threadFail} , {@link #threadAssertTrue} {@link
86	>	* <li>All assertions in code running in generated threads must use
87	>	* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
88		* #threadAssertEquals}, or {@link #threadAssertNull}, (not
89	<	* <tt>fail</tt>, <tt>assertTrue</tt>, etc.) It is OK (but not
89	>	* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
90		* particularly recommended) for other code to use these forms too.
91		* Only the most typically used JUnit assertion methods are defined
92	<	* this way, but enough to live with.</li>
92	>	* this way, but enough to live with.
93		*
94	<	* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
95	<	* to invoke <tt>super.setUp</tt> and <tt>super.tearDown</tt> within
94	>	* <li>If you override {@link #setUp} or {@link #tearDown}, make sure
95	>	* to invoke {@code super.setUp} and {@code super.tearDown} within
96		* them. These methods are used to clear and check for thread
97	<	* assertion failures.</li>
97	>	* assertion failures.
98		*
99	<	* <li>All delays and timeouts must use one of the constants <tt>
100	<	* SHORT_DELAY_MS</tt>, <tt> SMALL_DELAY_MS</tt>, <tt> MEDIUM_DELAY_MS</tt>,
101	<	* <tt> LONG_DELAY_MS</tt>. The idea here is that a SHORT is always
99	>	* <li>All delays and timeouts must use one of the constants {@code
100	>	* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
101	>	* {@code LONG_DELAY_MS}. The idea here is that a SHORT is always
102		* discriminable from zero time, and always allows enough time for the
103		* small amounts of computation (creating a thread, calling a few
104		* methods, etc) needed to reach a timeout point. Similarly, a SMALL
105		* is always discriminable as larger than SHORT and smaller than
106		* MEDIUM.  And so on. These constants are set to conservative values,
107		* but even so, if there is ever any doubt, they can all be increased
108	<	* in one spot to rerun tests on slower platforms</li>
108	>	* in one spot to rerun tests on slower platforms.
109		*
110	<	* <li> All threads generated must be joined inside each test case
111	<	* method (or <tt>fail</tt> to do so) before returning from the
112	<	* method. The <tt> joinPool</tt> method can be used to do this when
113	<	* using Executors.</li>
110	>	* <li>All threads generated must be joined inside each test case
111	>	* method (or {@code fail} to do so) before returning from the
112	>	* method. The {@code joinPool} method can be used to do this when
113	>	* using Executors.
114		*
115		* </ol>
116		*
117	<	* <p> <b>Other notes</b>
117	>	* <p><b>Other notes</b>
118		* <ul>
119		*
120	<	* <li> Usually, there is one testcase method per JSR166 method
120	>	* <li>Usually, there is one testcase method per JSR166 method
121		* covering "normal" operation, and then as many exception-testing
122		* methods as there are exceptions the method can throw. Sometimes
123		* there are multiple tests per JSR166 method when the different
124		* "normal" behaviors differ significantly. And sometimes testcases
125	<	* cover multiple methods when they cannot be tested in
126	<	* isolation.</li>
127	<	*
67	<	* <li> The documentation style for testcases is to provide as javadoc
125	>	* cover multiple methods when they cannot be tested in isolation.
126	>	*
127	>	* <li>The documentation style for testcases is to provide as javadoc
128		* a simple sentence or two describing the property that the testcase
129		* method purports to test. The javadocs do not say anything about how
130	<	* the property is tested. To find out, read the code.</li>
130	>	* the property is tested. To find out, read the code.
131		*
132	<	* <li> These tests are "conformance tests", and do not attempt to
132	>	* <li>These tests are "conformance tests", and do not attempt to
133		* test throughput, latency, scalability or other performance factors
134		* (see the separate "jtreg" tests for a set intended to check these
135		* for the most central aspects of functionality.) So, most tests use
136		* the smallest sensible numbers of threads, collection sizes, etc
137	<	* needed to check basic conformance.</li>
137	>	* needed to check basic conformance.
138		*
139		* <li>The test classes currently do not declare inclusion in
140		* any particular package to simplify things for people integrating
141	<	* them in TCK test suites.</li>
141	>	* them in TCK test suites.
142		*
143	<	* <li> As a convenience, the <tt>main</tt> of this class (JSR166TestCase)
144	<	* runs all JSR166 unit tests.</li>
143	>	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
144	>	* runs all JSR166 unit tests.
145		*
146		* </ul>
147		*/
148		public class JSR166TestCase extends TestCase {
149	+	private static final boolean useSecurityManager =
150	+	Boolean.getBoolean("jsr166.useSecurityManager");
151	+
152	+	protected static final boolean expensiveTests =
153	+	Boolean.getBoolean("jsr166.expensiveTests");
154	+
155	+	/**
156	+	* If true, also run tests that are not part of the official tck
157	+	* because they test unspecified implementation details.
158	+	*/
159	+	protected static final boolean testImplementationDetails =
160	+	Boolean.getBoolean("jsr166.testImplementationDetails");
161	+
162		/**
163	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
164	<	*/
165	<	public static void main (String[] args) {
166	<	int iters = 1;
167	<	if (args.length > 0)
168	<	iters = Integer.parseInt(args[0]);
169	<	Test s = suite();
170	<	for (int i = 0; i < iters; ++i)
171	<	junit.textui.TestRunner.run (s);
163	>	* If true, report on stdout all "slow" tests, that is, ones that
164	>	* take more than profileThreshold milliseconds to execute.
165	>	*/
166	>	private static final boolean profileTests =
167	>	Boolean.getBoolean("jsr166.profileTests");
168	>
169	>	/**
170	>	* The number of milliseconds that tests are permitted for
171	>	* execution without being reported, when profileTests is set.
172	>	*/
173	>	private static final long profileThreshold =
174	>	Long.getLong("jsr166.profileThreshold", 100);
175	>
176	>	/**
177	>	* The number of repetitions per test (for tickling rare bugs).
178	>	*/
179	>	private static final int runsPerTest =
180	>	Integer.getInteger("jsr166.runsPerTest", 1);
181	>
182	>	/**
183	>	* The number of repetitions of the test suite (for finding leaks?).
184	>	*/
185	>	private static final int suiteRuns =
186	>	Integer.getInteger("jsr166.suiteRuns", 1);
187	>
188	>	/**
189	>	* Returns the value of the system property, or NaN if not defined.
190	>	*/
191	>	private static float systemPropertyValue(String name) {
192	>	String floatString = System.getProperty(name);
193	>	if (floatString == null)
194	>	return Float.NaN;
195	>	try {
196	>	return Float.parseFloat(floatString);
197	>	} catch (NumberFormatException ex) {
198	>	throw new IllegalArgumentException(
199	>	String.format("Bad float value in system property %s=%s",
200	>	name, floatString));
201	>	}
202		}
203
204		/**
205	<	* Collects all JSR166 unit tests as one suite
206	<	*/
207	<	public static Test suite ( ) {
208	<	TestSuite suite = new TestSuite("JSR166 Unit Tests");
209	<
210	<	suite.addTest(new TestSuite(AbstractExecutorServiceTest.class));
211	<	suite.addTest(new TestSuite(AbstractQueueTest.class));
212	<	suite.addTest(new TestSuite(AbstractQueuedSynchronizerTest.class));
213	<	suite.addTest(new TestSuite(ArrayBlockingQueueTest.class));
214	<	suite.addTest(new TestSuite(AtomicBooleanTest.class));
215	<	suite.addTest(new TestSuite(AtomicIntegerArrayTest.class));
216	<	suite.addTest(new TestSuite(AtomicIntegerFieldUpdaterTest.class));
217	<	suite.addTest(new TestSuite(AtomicIntegerTest.class));
218	<	suite.addTest(new TestSuite(AtomicLongArrayTest.class));
219	<	suite.addTest(new TestSuite(AtomicLongFieldUpdaterTest.class));
220	<	suite.addTest(new TestSuite(AtomicLongTest.class));
221	<	suite.addTest(new TestSuite(AtomicMarkableReferenceTest.class));
222	<	suite.addTest(new TestSuite(AtomicReferenceArrayTest.class));
223	<	suite.addTest(new TestSuite(AtomicReferenceFieldUpdaterTest.class));
224	<	suite.addTest(new TestSuite(AtomicReferenceTest.class));
225	<	suite.addTest(new TestSuite(AtomicStampedReferenceTest.class));
226	<	suite.addTest(new TestSuite(ConcurrentHashMapTest.class));
227	<	suite.addTest(new TestSuite(ConcurrentLinkedQueueTest.class));
228	<	suite.addTest(new TestSuite(CopyOnWriteArrayListTest.class));
229	<	suite.addTest(new TestSuite(CopyOnWriteArraySetTest.class));
230	<	suite.addTest(new TestSuite(CountDownLatchTest.class));
231	<	suite.addTest(new TestSuite(CyclicBarrierTest.class));
232	<	suite.addTest(new TestSuite(DelayQueueTest.class));
233	<	suite.addTest(new TestSuite(ExchangerTest.class));
234	<	suite.addTest(new TestSuite(ExecutorsTest.class));
235	<	suite.addTest(new TestSuite(ExecutorCompletionServiceTest.class));
236	<	suite.addTest(new TestSuite(FutureTaskTest.class));
237	<	suite.addTest(new TestSuite(LinkedBlockingQueueTest.class));
238	<	suite.addTest(new TestSuite(LinkedListTest.class));
239	<	suite.addTest(new TestSuite(LockSupportTest.class));
240	<	suite.addTest(new TestSuite(PriorityBlockingQueueTest.class));
241	<	suite.addTest(new TestSuite(PriorityQueueTest.class));
242	<	suite.addTest(new TestSuite(ReentrantLockTest.class));
243	<	suite.addTest(new TestSuite(ReentrantReadWriteLockTest.class));
244	<	suite.addTest(new TestSuite(ScheduledExecutorTest.class));
245	<	suite.addTest(new TestSuite(SemaphoreTest.class));
246	<	suite.addTest(new TestSuite(SynchronousQueueTest.class));
247	<	suite.addTest(new TestSuite(SystemTest.class));
248	<	suite.addTest(new TestSuite(ThreadLocalTest.class));
249	<	suite.addTest(new TestSuite(ThreadPoolExecutorTest.class));
250	<	suite.addTest(new TestSuite(ThreadTest.class));
251	<	suite.addTest(new TestSuite(TimeUnitTest.class));
252	<
205	>	* The scaling factor to apply to standard delays used in tests.
206	>	* May be initialized from any of:
207	>	* - the "jsr166.delay.factor" system property
208	>	* - the "test.timeout.factor" system property (as used by jtreg)
209	>	*   See: http://openjdk.java.net/jtreg/tag-spec.html
210	>	* - hard-coded fuzz factor when using a known slowpoke VM
211	>	*/
212	>	private static final float delayFactor = delayFactor();
213	>
214	>	private static float delayFactor() {
215	>	float x;
216	>	if (!Float.isNaN(x = systemPropertyValue("jsr166.delay.factor")))
217	>	return x;
218	>	if (!Float.isNaN(x = systemPropertyValue("test.timeout.factor")))
219	>	return x;
220	>	String prop = System.getProperty("java.vm.version");
221	>	if (prop != null && prop.matches(".*debug.*"))
222	>	return 4.0f; // How much slower is fastdebug than product?!
223	>	return 1.0f;
224	>	}
225	>
226	>	public JSR166TestCase() { super(); }
227	>	public JSR166TestCase(String name) { super(name); }
228	>
229	>	/**
230	>	* A filter for tests to run, matching strings of the form
231	>	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
232	>	* Usefully combined with jsr166.runsPerTest.
233	>	*/
234	>	private static final Pattern methodFilter = methodFilter();
235	>
236	>	private static Pattern methodFilter() {
237	>	String regex = System.getProperty("jsr166.methodFilter");
238	>	return (regex == null) ? null : Pattern.compile(regex);
239	>	}
240	>
241	>	// Instrumentation to debug very rare, but very annoying hung test runs.
242	>	static volatile TestCase currentTestCase;
243	>	// static volatile int currentRun = 0;
244	>	static {
245	>	Runnable checkForWedgedTest = new Runnable() { public void run() {
246	>	// Avoid spurious reports with enormous runsPerTest.
247	>	// A single test case run should never take more than 1 second.
248	>	// But let's cap it at the high end too ...
249	>	final int timeoutMinutes =
250	>	Math.min(15, Math.max(runsPerTest / 60, 1));
251	>	for (TestCase lastTestCase = currentTestCase;;) {
252	>	try { MINUTES.sleep(timeoutMinutes); }
253	>	catch (InterruptedException unexpected) { break; }
254	>	if (lastTestCase == currentTestCase) {
255	>	System.err.printf(
256	>	"Looks like we're stuck running test: %s%n",
257	>	lastTestCase);
258	>	//                     System.err.printf(
259	>	//                         "Looks like we're stuck running test: %s (%d/%d)%n",
260	>	//                         lastTestCase, currentRun, runsPerTest);
261	>	//                     System.err.println("availableProcessors=" +
262	>	//                         Runtime.getRuntime().availableProcessors());
263	>	//                     System.err.printf("cpu model = %s%n", cpuModel());
264	>	dumpTestThreads();
265	>	// one stack dump is probably enough; more would be spam
266	>	break;
267	>	}
268	>	lastTestCase = currentTestCase;
269	>	}}};
270	>	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
271	>	thread.setDaemon(true);
272	>	thread.start();
273	>	}
274	>
275	>	//     public static String cpuModel() {
276	>	//         try {
277	>	//             Matcher matcher = Pattern.compile("model name\\s*: (.*)")
278	>	//                 .matcher(new String(
279	>	//                      Files.readAllBytes(Paths.get("/proc/cpuinfo")), "UTF-8"));
280	>	//             matcher.find();
281	>	//             return matcher.group(1);
282	>	//         } catch (Exception ex) { return null; }
283	>	//     }
284	>
285	>	public void runBare() throws Throwable {
286	>	currentTestCase = this;
287	>	if (methodFilter == null
288	>	|| methodFilter.matcher(toString()).find())
289	>	super.runBare();
290	>	}
291	>
292	>	protected void runTest() throws Throwable {
293	>	for (int i = 0; i < runsPerTest; i++) {
294	>	// currentRun = i;
295	>	if (profileTests)
296	>	runTestProfiled();
297	>	else
298	>	super.runTest();
299	>	}
300	>	}
301	>
302	>	protected void runTestProfiled() throws Throwable {
303	>	for (int i = 0; i < 2; i++) {
304	>	long startTime = System.nanoTime();
305	>	super.runTest();
306	>	long elapsedMillis = millisElapsedSince(startTime);
307	>	if (elapsedMillis < profileThreshold)
308	>	break;
309	>	// Never report first run of any test; treat it as a
310	>	// warmup run, notably to trigger all needed classloading,
311	>	if (i > 0)
312	>	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
313	>	}
314	>	}
315	>
316	>	/**
317	>	* Runs all JSR166 unit tests using junit.textui.TestRunner.
318	>	*/
319	>	public static void main(String[] args) {
320	>	main(suite(), args);
321	>	}
322	>
323	>	static class PithyResultPrinter extends junit.textui.ResultPrinter {
324	>	PithyResultPrinter(java.io.PrintStream writer) { super(writer); }
325	>	long runTime;
326	>	public void startTest(Test test) {}
327	>	protected void printHeader(long runTime) {
328	>	this.runTime = runTime; // defer printing for later
329	>	}
330	>	protected void printFooter(TestResult result) {
331	>	if (result.wasSuccessful()) {
332	>	getWriter().println("OK (" + result.runCount() + " tests)"
333	>	+ "  Time: " + elapsedTimeAsString(runTime));
334	>	} else {
335	>	getWriter().println("Time: " + elapsedTimeAsString(runTime));
336	>	super.printFooter(result);
337	>	}
338	>	}
339	>	}
340	>
341	>	/**
342	>	* Returns a TestRunner that doesn't bother with unnecessary
343	>	* fluff, like printing a "." for each test case.
344	>	*/
345	>	static junit.textui.TestRunner newPithyTestRunner() {
346	>	junit.textui.TestRunner runner = new junit.textui.TestRunner();
347	>	runner.setPrinter(new PithyResultPrinter(System.out));
348	>	return runner;
349	>	}
350	>
351	>	/**
352	>	* Runs all unit tests in the given test suite.
353	>	* Actual behavior influenced by jsr166.* system properties.
354	>	*/
355	>	static void main(Test suite, String[] args) {
356	>	if (useSecurityManager) {
357	>	System.err.println("Setting a permissive security manager");
358	>	Policy.setPolicy(permissivePolicy());
359	>	System.setSecurityManager(new SecurityManager());
360	>	}
361	>	for (int i = 0; i < suiteRuns; i++) {
362	>	TestResult result = newPithyTestRunner().doRun(suite);
363	>	if (!result.wasSuccessful())
364	>	System.exit(1);
365	>	System.gc();
366	>	System.runFinalization();
367	>	}
368	>	}
369	>
370	>	public static TestSuite newTestSuite(Object... suiteOrClasses) {
371	>	TestSuite suite = new TestSuite();
372	>	for (Object suiteOrClass : suiteOrClasses) {
373	>	if (suiteOrClass instanceof TestSuite)
374	>	suite.addTest((TestSuite) suiteOrClass);
375	>	else if (suiteOrClass instanceof Class)
376	>	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
377	>	else
378	>	throw new ClassCastException("not a test suite or class");
379	>	}
380		return suite;
381		}
382
383	+	public static void addNamedTestClasses(TestSuite suite,
384	+	String... testClassNames) {
385	+	for (String testClassName : testClassNames) {
386	+	try {
387	+	Class<?> testClass = Class.forName(testClassName);
388	+	Method m = testClass.getDeclaredMethod("suite",
389	+	new Class<?>[0]);
390	+	suite.addTest(newTestSuite((Test)m.invoke(null)));
391	+	} catch (Exception e) {
392	+	throw new Error("Missing test class", e);
393	+	}
394	+	}
395	+	}
396	+
397	+	public static final double JAVA_CLASS_VERSION;
398	+	public static final String JAVA_SPECIFICATION_VERSION;
399	+	static {
400	+	try {
401	+	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
402	+	new java.security.PrivilegedAction<Double>() {
403	+	public Double run() {
404	+	return Double.valueOf(System.getProperty("java.class.version"));}});
405	+	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
406	+	new java.security.PrivilegedAction<String>() {
407	+	public String run() {
408	+	return System.getProperty("java.specification.version");}});
409	+	} catch (Throwable t) {
410	+	throw new Error(t);
411	+	}
412	+	}
413	+
414	+	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
415	+	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
416	+	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
417	+	public static boolean atLeastJava9() {
418	+	return JAVA_CLASS_VERSION >= 53.0
419	+	// As of 2015-09, java9 still uses 52.0 class file version
420	+	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?(9|[0-9][0-9])$");
421	+	}
422	+	public static boolean atLeastJava10() {
423	+	return JAVA_CLASS_VERSION >= 54.0
424	+	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?[0-9][0-9]$");
425	+	}
426	+
427	+	/**
428	+	* Collects all JSR166 unit tests as one suite.
429	+	*/
430	+	public static Test suite() {
431	+	// Java7+ test classes
432	+	TestSuite suite = newTestSuite(
433	+	ForkJoinPoolTest.suite(),
434	+	ForkJoinTaskTest.suite(),
435	+	RecursiveActionTest.suite(),
436	+	RecursiveTaskTest.suite(),
437	+	LinkedTransferQueueTest.suite(),
438	+	PhaserTest.suite(),
439	+	ThreadLocalRandomTest.suite(),
440	+	AbstractExecutorServiceTest.suite(),
441	+	AbstractQueueTest.suite(),
442	+	AbstractQueuedSynchronizerTest.suite(),
443	+	AbstractQueuedLongSynchronizerTest.suite(),
444	+	ArrayBlockingQueueTest.suite(),
445	+	ArrayDequeTest.suite(),
446	+	AtomicBooleanTest.suite(),
447	+	AtomicIntegerArrayTest.suite(),
448	+	AtomicIntegerFieldUpdaterTest.suite(),
449	+	AtomicIntegerTest.suite(),
450	+	AtomicLongArrayTest.suite(),
451	+	AtomicLongFieldUpdaterTest.suite(),
452	+	AtomicLongTest.suite(),
453	+	AtomicMarkableReferenceTest.suite(),
454	+	AtomicReferenceArrayTest.suite(),
455	+	AtomicReferenceFieldUpdaterTest.suite(),
456	+	AtomicReferenceTest.suite(),
457	+	AtomicStampedReferenceTest.suite(),
458	+	ConcurrentHashMapTest.suite(),
459	+	ConcurrentLinkedDequeTest.suite(),
460	+	ConcurrentLinkedQueueTest.suite(),
461	+	ConcurrentSkipListMapTest.suite(),
462	+	ConcurrentSkipListSubMapTest.suite(),
463	+	ConcurrentSkipListSetTest.suite(),
464	+	ConcurrentSkipListSubSetTest.suite(),
465	+	CopyOnWriteArrayListTest.suite(),
466	+	CopyOnWriteArraySetTest.suite(),
467	+	CountDownLatchTest.suite(),
468	+	CyclicBarrierTest.suite(),
469	+	DelayQueueTest.suite(),
470	+	EntryTest.suite(),
471	+	ExchangerTest.suite(),
472	+	ExecutorsTest.suite(),
473	+	ExecutorCompletionServiceTest.suite(),
474	+	FutureTaskTest.suite(),
475	+	LinkedBlockingDequeTest.suite(),
476	+	LinkedBlockingQueueTest.suite(),
477	+	LinkedListTest.suite(),
478	+	LockSupportTest.suite(),
479	+	PriorityBlockingQueueTest.suite(),
480	+	PriorityQueueTest.suite(),
481	+	ReentrantLockTest.suite(),
482	+	ReentrantReadWriteLockTest.suite(),
483	+	ScheduledExecutorTest.suite(),
484	+	ScheduledExecutorSubclassTest.suite(),
485	+	SemaphoreTest.suite(),
486	+	SynchronousQueueTest.suite(),
487	+	SystemTest.suite(),
488	+	ThreadLocalTest.suite(),
489	+	ThreadPoolExecutorTest.suite(),
490	+	ThreadPoolExecutorSubclassTest.suite(),
491	+	ThreadTest.suite(),
492	+	TimeUnitTest.suite(),
493	+	TreeMapTest.suite(),
494	+	TreeSetTest.suite(),
495	+	TreeSubMapTest.suite(),
496	+	TreeSubSetTest.suite());
497	+
498	+	// Java8+ test classes
499	+	if (atLeastJava8()) {
500	+	String[] java8TestClassNames = {
501	+	"Atomic8Test",
502	+	"CompletableFutureTest",
503	+	"ConcurrentHashMap8Test",
504	+	"CountedCompleterTest",
505	+	"DoubleAccumulatorTest",
506	+	"DoubleAdderTest",
507	+	"ForkJoinPool8Test",
508	+	"ForkJoinTask8Test",
509	+	"LongAccumulatorTest",
510	+	"LongAdderTest",
511	+	"SplittableRandomTest",
512	+	"StampedLockTest",
513	+	"SubmissionPublisherTest",
514	+	"ThreadLocalRandom8Test",
515	+	"TimeUnit8Test",
516	+	};
517	+	addNamedTestClasses(suite, java8TestClassNames);
518	+	}
519	+
520	+	// Java9+ test classes
521	+	if (atLeastJava9()) {
522	+	String[] java9TestClassNames = {
523	+	"ExecutorCompletionService9Test",
524	+	};
525	+	addNamedTestClasses(suite, java9TestClassNames);
526	+	}
527	+
528	+	return suite;
529	+	}
530	+
531	+	/** Returns list of junit-style test method names in given class. */
532	+	public static ArrayList<String> testMethodNames(Class<?> testClass) {
533	+	Method[] methods = testClass.getDeclaredMethods();
534	+	ArrayList<String> names = new ArrayList<String>(methods.length);
535	+	for (Method method : methods) {
536	+	if (method.getName().startsWith("test")
537	+	&& Modifier.isPublic(method.getModifiers())
538	+	// method.getParameterCount() requires jdk8+
539	+	&& method.getParameterTypes().length == 0) {
540	+	names.add(method.getName());
541	+	}
542	+	}
543	+	return names;
544	+	}
545	+
546	+	/**
547	+	* Returns junit-style testSuite for the given test class, but
548	+	* parameterized by passing extra data to each test.
549	+	*/
550	+	public static <ExtraData> Test parameterizedTestSuite
551	+	(Class<? extends JSR166TestCase> testClass,
552	+	Class<ExtraData> dataClass,
553	+	ExtraData data) {
554	+	try {
555	+	TestSuite suite = new TestSuite();
556	+	Constructor c =
557	+	testClass.getDeclaredConstructor(dataClass, String.class);
558	+	for (String methodName : testMethodNames(testClass))
559	+	suite.addTest((Test) c.newInstance(data, methodName));
560	+	return suite;
561	+	} catch (Exception e) {
562	+	throw new Error(e);
563	+	}
564	+	}
565	+
566	+	/**
567	+	* Returns junit-style testSuite for the jdk8 extension of the
568	+	* given test class, but parameterized by passing extra data to
569	+	* each test.  Uses reflection to allow compilation in jdk7.
570	+	*/
571	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
572	+	(Class<? extends JSR166TestCase> testClass,
573	+	Class<ExtraData> dataClass,
574	+	ExtraData data) {
575	+	if (atLeastJava8()) {
576	+	String name = testClass.getName();
577	+	String name8 = name.replaceAll("Test$", "8Test");
578	+	if (name.equals(name8)) throw new Error(name);
579	+	try {
580	+	return (Test)
581	+	Class.forName(name8)
582	+	.getMethod("testSuite", new Class[] { dataClass })
583	+	.invoke(null, data);
584	+	} catch (Exception e) {
585	+	throw new Error(e);
586	+	}
587	+	} else {
588	+	return new TestSuite();
589	+	}
590	+	}
591	+
592	+	// Delays for timing-dependent tests, in milliseconds.
593
594		public static long SHORT_DELAY_MS;
595		public static long SMALL_DELAY_MS;
596		public static long MEDIUM_DELAY_MS;
597		public static long LONG_DELAY_MS;
598
159	–
599		/**
600	<	* Return the shortest timed delay. This could
601	<	* be reimplemented to use for example a Property.
602	<	*/
600	>	* Returns the shortest timed delay. This can be scaled up for
601	>	* slow machines using the jsr166.delay.factor system property,
602	>	* or via jtreg's -timeoutFactor: flag.
603	>	* http://openjdk.java.net/jtreg/command-help.html
604	>	*/
605		protected long getShortDelay() {
606	<	return 25;
606	>	return (long) (50 * delayFactor);
607		}
608
168	–
609		/**
610	<	* Set delays as multiples of SHORT_DELAY.
610	>	* Sets delays as multiples of SHORT_DELAY.
611		*/
612	<	protected  void setDelays() {
612	>	protected void setDelays() {
613		SHORT_DELAY_MS = getShortDelay();
614	<	SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
614	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
615		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
616	<	LONG_DELAY_MS = SHORT_DELAY_MS * 50;
616	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
617	>	}
618	>
619	>	/**
620	>	* Returns a timeout in milliseconds to be used in tests that
621	>	* verify that operations block or time out.
622	>	*/
623	>	long timeoutMillis() {
624	>	return SHORT_DELAY_MS / 4;
625		}
626
627		/**
628	<	* Flag set true if any threadAssert methods fail
628	>	* Returns a new Date instance representing a time at least
629	>	* delayMillis milliseconds in the future.
630		*/
631	<	volatile boolean threadFailed;
631	>	Date delayedDate(long delayMillis) {
632	>	// Add 1 because currentTimeMillis is known to round into the past.
633	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
634	>	}
635	>
636	>	/**
637	>	* The first exception encountered if any threadAssertXXX method fails.
638	>	*/
639	>	private final AtomicReference<Throwable> threadFailure
640	>	= new AtomicReference<Throwable>(null);
641
642		/**
643	<	* Initialize test to indicate that no thread assertions have failed
643	>	* Records an exception so that it can be rethrown later in the test
644	>	* harness thread, triggering a test case failure.  Only the first
645	>	* failure is recorded; subsequent calls to this method from within
646	>	* the same test have no effect.
647		*/
648	<	public void setUp() {
648	>	public void threadRecordFailure(Throwable t) {
649	>	System.err.println(t);
650	>	dumpTestThreads();
651	>	threadFailure.compareAndSet(null, t);
652	>	}
653	>
654	>	public void setUp() {
655		setDelays();
656	<	threadFailed = false;
656	>	}
657	>
658	>	void tearDownFail(String format, Object... args) {
659	>	String msg = toString() + ": " + String.format(format, args);
660	>	System.err.println(msg);
661	>	dumpTestThreads();
662	>	throw new AssertionFailedError(msg);
663	>	}
664	>
665	>	/**
666	>	* Extra checks that get done for all test cases.
667	>	*
668	>	* Triggers test case failure if any thread assertions have failed,
669	>	* by rethrowing, in the test harness thread, any exception recorded
670	>	* earlier by threadRecordFailure.
671	>	*
672	>	* Triggers test case failure if interrupt status is set in the main thread.
673	>	*/
674	>	public void tearDown() throws Exception {
675	>	Throwable t = threadFailure.getAndSet(null);
676	>	if (t != null) {
677	>	if (t instanceof Error)
678	>	throw (Error) t;
679	>	else if (t instanceof RuntimeException)
680	>	throw (RuntimeException) t;
681	>	else if (t instanceof Exception)
682	>	throw (Exception) t;
683	>	else {
684	>	AssertionFailedError afe =
685	>	new AssertionFailedError(t.toString());
686	>	afe.initCause(t);
687	>	throw afe;
688	>	}
689	>	}
690	>
691	>	if (Thread.interrupted())
692	>	tearDownFail("interrupt status set in main thread");
693	>
694	>	checkForkJoinPoolThreadLeaks();
695		}
696
697		/**
698	<	* Trigger test case failure if any thread assertions have failed
698	>	* Finds missing PoolCleaners
699		*/
700	<	public void tearDown() {
701	<	assertFalse(threadFailed);
700	>	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
701	>	Thread[] survivors = new Thread[7];
702	>	int count = Thread.enumerate(survivors);
703	>	for (int i = 0; i < count; i++) {
704	>	Thread thread = survivors[i];
705	>	String name = thread.getName();
706	>	if (name.startsWith("ForkJoinPool-")) {
707	>	// give thread some time to terminate
708	>	thread.join(LONG_DELAY_MS);
709	>	if (thread.isAlive())
710	>	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
711	>	thread);
712	>	}
713	>	}
714	>
715	>	if (!ForkJoinPool.commonPool()
716	>	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
717	>	tearDownFail("ForkJoin common pool thread stuck");
718		}
719
720		/**
721	<	* Fail, also setting status to indicate current testcase should fail
722	<	*/
721	>	* Just like fail(reason), but additionally recording (using
722	>	* threadRecordFailure) any AssertionFailedError thrown, so that
723	>	* the current testcase will fail.
724	>	*/
725		public void threadFail(String reason) {
726	<	threadFailed = true;
727	<	fail(reason);
726	>	try {
727	>	fail(reason);
728	>	} catch (AssertionFailedError t) {
729	>	threadRecordFailure(t);
730	>	throw t;
731	>	}
732		}
733
734		/**
735	<	* If expression not true, set status to indicate current testcase
736	<	* should fail
737	<	*/
735	>	* Just like assertTrue(b), but additionally recording (using
736	>	* threadRecordFailure) any AssertionFailedError thrown, so that
737	>	* the current testcase will fail.
738	>	*/
739		public void threadAssertTrue(boolean b) {
740	<	if (!b) {
213	<	threadFailed = true;
740	>	try {
741		assertTrue(b);
742	+	} catch (AssertionFailedError t) {
743	+	threadRecordFailure(t);
744	+	throw t;
745		}
746		}
747
748		/**
749	<	* If expression not false, set status to indicate current testcase
750	<	* should fail
751	<	*/
749	>	* Just like assertFalse(b), but additionally recording (using
750	>	* threadRecordFailure) any AssertionFailedError thrown, so that
751	>	* the current testcase will fail.
752	>	*/
753		public void threadAssertFalse(boolean b) {
754	<	if (b) {
224	<	threadFailed = true;
754	>	try {
755		assertFalse(b);
756	+	} catch (AssertionFailedError t) {
757	+	threadRecordFailure(t);
758	+	throw t;
759		}
760		}
761
762		/**
763	<	* If argument not null, set status to indicate current testcase
764	<	* should fail
765	<	*/
763	>	* Just like assertNull(x), but additionally recording (using
764	>	* threadRecordFailure) any AssertionFailedError thrown, so that
765	>	* the current testcase will fail.
766	>	*/
767		public void threadAssertNull(Object x) {
768	<	if (x != null) {
235	<	threadFailed = true;
768	>	try {
769		assertNull(x);
770	+	} catch (AssertionFailedError t) {
771	+	threadRecordFailure(t);
772	+	throw t;
773		}
774		}
775
776		/**
777	<	* If arguments not equal, set status to indicate current testcase
778	<	* should fail
779	<	*/
777	>	* Just like assertEquals(x, y), but additionally recording (using
778	>	* threadRecordFailure) any AssertionFailedError thrown, so that
779	>	* the current testcase will fail.
780	>	*/
781		public void threadAssertEquals(long x, long y) {
782	<	if (x != y) {
246	<	threadFailed = true;
782	>	try {
783		assertEquals(x, y);
784	+	} catch (AssertionFailedError t) {
785	+	threadRecordFailure(t);
786	+	throw t;
787		}
788		}
789
790		/**
791	<	* If arguments not equal, set status to indicate current testcase
792	<	* should fail
793	<	*/
791	>	* Just like assertEquals(x, y), but additionally recording (using
792	>	* threadRecordFailure) any AssertionFailedError thrown, so that
793	>	* the current testcase will fail.
794	>	*/
795		public void threadAssertEquals(Object x, Object y) {
796	<	if (x != y && (x == null || !x.equals(y))) {
257	<	threadFailed = true;
796	>	try {
797		assertEquals(x, y);
798	+	} catch (AssertionFailedError fail) {
799	+	threadRecordFailure(fail);
800	+	throw fail;
801	+	} catch (Throwable fail) {
802	+	threadUnexpectedException(fail);
803		}
804		}
805
806		/**
807	<	* threadFail with message "should throw exception"
808	<	*/
807	>	* Just like assertSame(x, y), but additionally recording (using
808	>	* threadRecordFailure) any AssertionFailedError thrown, so that
809	>	* the current testcase will fail.
810	>	*/
811	>	public void threadAssertSame(Object x, Object y) {
812	>	try {
813	>	assertSame(x, y);
814	>	} catch (AssertionFailedError fail) {
815	>	threadRecordFailure(fail);
816	>	throw fail;
817	>	}
818	>	}
819	>
820	>	/**
821	>	* Calls threadFail with message "should throw exception".
822	>	*/
823		public void threadShouldThrow() {
824	<	threadFailed = true;
267	<	fail("should throw exception");
824	>	threadFail("should throw exception");
825		}
826
827		/**
828	<	* threadFail with message "Unexpected exception"
828	>	* Calls threadFail with message "should throw" + exceptionName.
829		*/
830	<	public void threadUnexpectedException() {
831	<	threadFailed = true;
275	<	fail("Unexpected exception");
830	>	public void threadShouldThrow(String exceptionName) {
831	>	threadFail("should throw " + exceptionName);
832		}
833
834	+	/**
835	+	* Records the given exception using {@link #threadRecordFailure},
836	+	* then rethrows the exception, wrapping it in an
837	+	* AssertionFailedError if necessary.
838	+	*/
839	+	public void threadUnexpectedException(Throwable t) {
840	+	threadRecordFailure(t);
841	+	t.printStackTrace();
842	+	if (t instanceof RuntimeException)
843	+	throw (RuntimeException) t;
844	+	else if (t instanceof Error)
845	+	throw (Error) t;
846	+	else {
847	+	AssertionFailedError afe =
848	+	new AssertionFailedError("unexpected exception: " + t);
849	+	afe.initCause(t);
850	+	throw afe;
851	+	}
852	+	}
853	+
854	+	/**
855	+	* Delays, via Thread.sleep, for the given millisecond delay, but
856	+	* if the sleep is shorter than specified, may re-sleep or yield
857	+	* until time elapses.  Ensures that the given time, as measured
858	+	* by System.nanoTime(), has elapsed.
859	+	*/
860	+	static void delay(long millis) throws InterruptedException {
861	+	long nanos = millis * (1000 * 1000);
862	+	final long wakeupTime = System.nanoTime() + nanos;
863	+	do {
864	+	if (millis > 0L)
865	+	Thread.sleep(millis);
866	+	else // too short to sleep
867	+	Thread.yield();
868	+	nanos = wakeupTime - System.nanoTime();
869	+	millis = nanos / (1000 * 1000);
870	+	} while (nanos >= 0L);
871	+	}
872
873		/**
874	<	* Wait out termination of a thread pool or fail doing so
874	>	* Allows use of try-with-resources with per-test thread pools.
875		*/
876	<	public void joinPool(ExecutorService exec) {
876	>	class PoolCleaner implements AutoCloseable {
877	>	private final ExecutorService pool;
878	>	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
879	>	public void close() { joinPool(pool); }
880	>	}
881	>
882	>	/**
883	>	* An extension of PoolCleaner that has an action to release the pool.
884	>	*/
885	>	class PoolCleanerWithReleaser extends PoolCleaner {
886	>	private final Runnable releaser;
887	>	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
888	>	super(pool);
889	>	this.releaser = releaser;
890	>	}
891	>	public void close() {
892	>	try {
893	>	releaser.run();
894	>	} finally {
895	>	super.close();
896	>	}
897	>	}
898	>	}
899	>
900	>	PoolCleaner cleaner(ExecutorService pool) {
901	>	return new PoolCleaner(pool);
902	>	}
903	>
904	>	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
905	>	return new PoolCleanerWithReleaser(pool, releaser);
906	>	}
907	>
908	>	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
909	>	return new PoolCleanerWithReleaser(pool, releaser(latch));
910	>	}
911	>
912	>	Runnable releaser(final CountDownLatch latch) {
913	>	return new Runnable() { public void run() {
914	>	do { latch.countDown(); }
915	>	while (latch.getCount() > 0);
916	>	}};
917	>	}
918	>
919	>	PoolCleaner cleaner(ExecutorService pool, AtomicBoolean flag) {
920	>	return new PoolCleanerWithReleaser(pool, releaser(flag));
921	>	}
922	>
923	>	Runnable releaser(final AtomicBoolean flag) {
924	>	return new Runnable() { public void run() { flag.set(true); }};
925	>	}
926	>
927	>	/**
928	>	* Waits out termination of a thread pool or fails doing so.
929	>	*/
930	>	void joinPool(ExecutorService pool) {
931	>	try {
932	>	pool.shutdown();
933	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
934	>	try {
935	>	threadFail("ExecutorService " + pool +
936	>	" did not terminate in a timely manner");
937	>	} finally {
938	>	// last resort, for the benefit of subsequent tests
939	>	pool.shutdownNow();
940	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
941	>	}
942	>	}
943	>	} catch (SecurityException ok) {
944	>	// Allowed in case test doesn't have privs
945	>	} catch (InterruptedException fail) {
946	>	threadFail("Unexpected InterruptedException");
947	>	}
948	>	}
949	>
950	>	/** Like Runnable, but with the freedom to throw anything */
951	>	interface Action { public void run() throws Throwable; }
952	>
953	>	/**
954	>	* Runs all the given actions in parallel, failing if any fail.
955	>	* Useful for running multiple variants of tests that are
956	>	* necessarily individually slow because they must block.
957	>	*/
958	>	void testInParallel(Action ... actions) {
959	>	ExecutorService pool = Executors.newCachedThreadPool();
960	>	try (PoolCleaner cleaner = cleaner(pool)) {
961	>	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
962	>	for (final Action action : actions)
963	>	futures.add(pool.submit(new CheckedRunnable() {
964	>	public void realRun() throws Throwable { action.run();}}));
965	>	for (Future<?> future : futures)
966	>	try {
967	>	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
968	>	} catch (ExecutionException ex) {
969	>	threadUnexpectedException(ex.getCause());
970	>	} catch (Exception ex) {
971	>	threadUnexpectedException(ex);
972	>	}
973	>	}
974	>	}
975	>
976	>	/**
977	>	* A debugging tool to print stack traces of most threads, as jstack does.
978	>	* Uninteresting threads are filtered out.
979	>	*/
980	>	static void dumpTestThreads() {
981	>	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
982	>	System.err.println("------ stacktrace dump start ------");
983	>	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
984	>	String name = info.getThreadName();
985	>	if ("Signal Dispatcher".equals(name))
986	>	continue;
987	>	if ("Reference Handler".equals(name)
988	>	&& info.getLockName().startsWith("java.lang.ref.Reference$Lock"))
989	>	continue;
990	>	if ("Finalizer".equals(name)
991	>	&& info.getLockName().startsWith("java.lang.ref.ReferenceQueue$Lock"))
992	>	continue;
993	>	if ("checkForWedgedTest".equals(name))
994	>	continue;
995	>	System.err.print(info);
996	>	}
997	>	System.err.println("------ stacktrace dump end ------");
998	>	}
999	>
1000	>	/**
1001	>	* Checks that thread does not terminate within the default
1002	>	* millisecond delay of {@code timeoutMillis()}.
1003	>	*/
1004	>	void assertThreadStaysAlive(Thread thread) {
1005	>	assertThreadStaysAlive(thread, timeoutMillis());
1006	>	}
1007	>
1008	>	/**
1009	>	* Checks that thread does not terminate within the given millisecond delay.
1010	>	*/
1011	>	void assertThreadStaysAlive(Thread thread, long millis) {
1012	>	try {
1013	>	// No need to optimize the failing case via Thread.join.
1014	>	delay(millis);
1015	>	assertTrue(thread.isAlive());
1016	>	} catch (InterruptedException fail) {
1017	>	threadFail("Unexpected InterruptedException");
1018	>	}
1019	>	}
1020	>
1021	>	/**
1022	>	* Checks that the threads do not terminate within the default
1023	>	* millisecond delay of {@code timeoutMillis()}.
1024	>	*/
1025	>	void assertThreadsStayAlive(Thread... threads) {
1026	>	assertThreadsStayAlive(timeoutMillis(), threads);
1027	>	}
1028	>
1029	>	/**
1030	>	* Checks that the threads do not terminate within the given millisecond delay.
1031	>	*/
1032	>	void assertThreadsStayAlive(long millis, Thread... threads) {
1033		try {
1034	<	exec.shutdown();
1035	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
1036	<	} catch(InterruptedException ie) {
1037	<	fail("Unexpected exception");
1034	>	// No need to optimize the failing case via Thread.join.
1035	>	delay(millis);
1036	>	for (Thread thread : threads)
1037	>	assertTrue(thread.isAlive());
1038	>	} catch (InterruptedException fail) {
1039	>	threadFail("Unexpected InterruptedException");
1040		}
1041		}
1042
1043	+	/**
1044	+	* Checks that future.get times out, with the default timeout of
1045	+	* {@code timeoutMillis()}.
1046	+	*/
1047	+	void assertFutureTimesOut(Future future) {
1048	+	assertFutureTimesOut(future, timeoutMillis());
1049	+	}
1050	+
1051	+	/**
1052	+	* Checks that future.get times out, with the given millisecond timeout.
1053	+	*/
1054	+	void assertFutureTimesOut(Future future, long timeoutMillis) {
1055	+	long startTime = System.nanoTime();
1056	+	try {
1057	+	future.get(timeoutMillis, MILLISECONDS);
1058	+	shouldThrow();
1059	+	} catch (TimeoutException success) {
1060	+	} catch (Exception fail) {
1061	+	threadUnexpectedException(fail);
1062	+	} finally { future.cancel(true); }
1063	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
1064	+	}
1065
1066		/**
1067	<	* fail with message "should throw exception"
1068	<	*/
1067	>	* Fails with message "should throw exception".
1068	>	*/
1069		public void shouldThrow() {
1070		fail("Should throw exception");
1071		}
1072
1073		/**
1074	<	* fail with message "Unexpected exception"
1074	>	* Fails with message "should throw " + exceptionName.
1075		*/
1076	<	public void unexpectedException() {
1077	<	fail("Unexpected exception");
1076	>	public void shouldThrow(String exceptionName) {
1077	>	fail("Should throw " + exceptionName);
1078		}
1079
306	–
1080		/**
1081		* The number of elements to place in collections, arrays, etc.
1082		*/
1083	<	static final int SIZE = 20;
1083	>	public static final int SIZE = 20;
1084
1085		// Some convenient Integer constants
1086
1087	<	static final Integer zero = new Integer(0);
1088	<	static final Integer one = new Integer(1);
1089	<	static final Integer two = new Integer(2);
1090	<	static final Integer three  = new Integer(3);
1091	<	static final Integer four  = new Integer(4);
1092	<	static final Integer five  = new Integer(5);
1093	<	static final Integer six = new Integer(6);
1094	<	static final Integer seven = new Integer(7);
1095	<	static final Integer eight = new Integer(8);
1096	<	static final Integer nine = new Integer(9);
1097	<	static final Integer m1  = new Integer(-1);
1098	<	static final Integer m2  = new Integer(-2);
1099	<	static final Integer m3  = new Integer(-3);
1100	<	static final Integer m4 = new Integer(-4);
1101	<	static final Integer m5 = new Integer(-5);
1102	<	static final Integer m10 = new Integer(-10);
1087	>	public static final Integer zero  = new Integer(0);
1088	>	public static final Integer one   = new Integer(1);
1089	>	public static final Integer two   = new Integer(2);
1090	>	public static final Integer three = new Integer(3);
1091	>	public static final Integer four  = new Integer(4);
1092	>	public static final Integer five  = new Integer(5);
1093	>	public static final Integer six   = new Integer(6);
1094	>	public static final Integer seven = new Integer(7);
1095	>	public static final Integer eight = new Integer(8);
1096	>	public static final Integer nine  = new Integer(9);
1097	>	public static final Integer m1  = new Integer(-1);
1098	>	public static final Integer m2  = new Integer(-2);
1099	>	public static final Integer m3  = new Integer(-3);
1100	>	public static final Integer m4  = new Integer(-4);
1101	>	public static final Integer m5  = new Integer(-5);
1102	>	public static final Integer m6  = new Integer(-6);
1103	>	public static final Integer m10 = new Integer(-10);
1104	>
1105	>	/**
1106	>	* Runs Runnable r with a security policy that permits precisely
1107	>	* the specified permissions.  If there is no current security
1108	>	* manager, the runnable is run twice, both with and without a
1109	>	* security manager.  We require that any security manager permit
1110	>	* getPolicy/setPolicy.
1111	>	*/
1112	>	public void runWithPermissions(Runnable r, Permission... permissions) {
1113	>	SecurityManager sm = System.getSecurityManager();
1114	>	if (sm == null) {
1115	>	r.run();
1116	>	}
1117	>	runWithSecurityManagerWithPermissions(r, permissions);
1118	>	}
1119	>
1120	>	/**
1121	>	* Runs Runnable r with a security policy that permits precisely
1122	>	* the specified permissions.  If there is no current security
1123	>	* manager, a temporary one is set for the duration of the
1124	>	* Runnable.  We require that any security manager permit
1125	>	* getPolicy/setPolicy.
1126	>	*/
1127	>	public void runWithSecurityManagerWithPermissions(Runnable r,
1128	>	Permission... permissions) {
1129	>	SecurityManager sm = System.getSecurityManager();
1130	>	if (sm == null) {
1131	>	Policy savedPolicy = Policy.getPolicy();
1132	>	try {
1133	>	Policy.setPolicy(permissivePolicy());
1134	>	System.setSecurityManager(new SecurityManager());
1135	>	runWithSecurityManagerWithPermissions(r, permissions);
1136	>	} finally {
1137	>	System.setSecurityManager(null);
1138	>	Policy.setPolicy(savedPolicy);
1139	>	}
1140	>	} else {
1141	>	Policy savedPolicy = Policy.getPolicy();
1142	>	AdjustablePolicy policy = new AdjustablePolicy(permissions);
1143	>	Policy.setPolicy(policy);
1144	>
1145	>	try {
1146	>	r.run();
1147	>	} finally {
1148	>	policy.addPermission(new SecurityPermission("setPolicy"));
1149	>	Policy.setPolicy(savedPolicy);
1150	>	}
1151	>	}
1152	>	}
1153
1154	+	/**
1155	+	* Runs a runnable without any permissions.
1156	+	*/
1157	+	public void runWithoutPermissions(Runnable r) {
1158	+	runWithPermissions(r);
1159	+	}
1160
1161		/**
1162		* A security policy where new permissions can be dynamically added
1163		* or all cleared.
1164		*/
1165	<	static class AdjustablePolicy extends java.security.Policy {
1165	>	public static class AdjustablePolicy extends java.security.Policy {
1166		Permissions perms = new Permissions();
1167	<	AdjustablePolicy() { }
1167	>	AdjustablePolicy(Permission... permissions) {
1168	>	for (Permission permission : permissions)
1169	>	perms.add(permission);
1170	>	}
1171		void addPermission(Permission perm) { perms.add(perm); }
1172		void clearPermissions() { perms = new Permissions(); }
1173	<	public PermissionCollection getPermissions(CodeSource cs) {
1174	<	return perms;
1175	<	}
1176	<	public PermissionCollection getPermissions(ProtectionDomain pd) {
1177	<	return perms;
1178	<	}
1179	<	public boolean implies(ProtectionDomain pd, Permission p) {
1180	<	return perms.implies(p);
1181	<	}
1182	<	public void refresh() {}
1173	>	public PermissionCollection getPermissions(CodeSource cs) {
1174	>	return perms;
1175	>	}
1176	>	public PermissionCollection getPermissions(ProtectionDomain pd) {
1177	>	return perms;
1178	>	}
1179	>	public boolean implies(ProtectionDomain pd, Permission p) {
1180	>	return perms.implies(p);
1181	>	}
1182	>	public void refresh() {}
1183	>	public String toString() {
1184	>	List<Permission> ps = new ArrayList<Permission>();
1185	>	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1186	>	ps.add(e.nextElement());
1187	>	return "AdjustablePolicy with permissions " + ps;
1188	>	}
1189		}
1190
1191	+	/**
1192	+	* Returns a policy containing all the permissions we ever need.
1193	+	*/
1194	+	public static Policy permissivePolicy() {
1195	+	return new AdjustablePolicy
1196	+	// Permissions j.u.c. needs directly
1197	+	(new RuntimePermission("modifyThread"),
1198	+	new RuntimePermission("getClassLoader"),
1199	+	new RuntimePermission("setContextClassLoader"),
1200	+	// Permissions needed to change permissions!
1201	+	new SecurityPermission("getPolicy"),
1202	+	new SecurityPermission("setPolicy"),
1203	+	new RuntimePermission("setSecurityManager"),
1204	+	// Permissions needed by the junit test harness
1205	+	new RuntimePermission("accessDeclaredMembers"),
1206	+	new PropertyPermission("*", "read"),
1207	+	new java.io.FilePermission("<<ALL FILES>>", "read"));
1208	+	}
1209
1210	<	// Some convenient Runnable classes
1210	>	/**
1211	>	* Sleeps until the given time has elapsed.
1212	>	* Throws AssertionFailedError if interrupted.
1213	>	*/
1214	>	void sleep(long millis) {
1215	>	try {
1216	>	delay(millis);
1217	>	} catch (InterruptedException fail) {
1218	>	AssertionFailedError afe =
1219	>	new AssertionFailedError("Unexpected InterruptedException");
1220	>	afe.initCause(fail);
1221	>	throw afe;
1222	>	}
1223	>	}
1224
1225	<	static class NoOpRunnable implements Runnable {
1226	<	public void run() {}
1225	>	/**
1226	>	* Spin-waits up to the specified number of milliseconds for the given
1227	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1228	>	*/
1229	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1230	>	long startTime = System.nanoTime();
1231	>	for (;;) {
1232	>	Thread.State s = thread.getState();
1233	>	if (s == Thread.State.BLOCKED ||
1234	>	s == Thread.State.WAITING ||
1235	>	s == Thread.State.TIMED_WAITING)
1236	>	return;
1237	>	else if (s == Thread.State.TERMINATED)
1238	>	fail("Unexpected thread termination");
1239	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1240	>	threadAssertTrue(thread.isAlive());
1241	>	return;
1242	>	}
1243	>	Thread.yield();
1244	>	}
1245		}
1246
1247	<	static class NoOpCallable implements Callable {
1248	<	public Object call() { return Boolean.TRUE; }
1247	>	/**
1248	>	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
1249	>	* state: BLOCKED, WAITING, or TIMED_WAITING.
1250	>	*/
1251	>	void waitForThreadToEnterWaitState(Thread thread) {
1252	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
1253		}
1254
1255	<	static final String TEST_STRING = "a test string";
1255	>	/**
1256	>	* Returns the number of milliseconds since time given by
1257	>	* startNanoTime, which must have been previously returned from a
1258	>	* call to {@link System#nanoTime()}.
1259	>	*/
1260	>	static long millisElapsedSince(long startNanoTime) {
1261	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1262	>	}
1263	>
1264	>	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1265	>	//         long startTime = System.nanoTime();
1266	>	//         try {
1267	>	//             r.run();
1268	>	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1269	>	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1270	>	//             throw new AssertionFailedError("did not return promptly");
1271	>	//     }
1272	>
1273	>	//     void assertTerminatesPromptly(Runnable r) {
1274	>	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1275	>	//     }
1276
1277	<	static class StringTask implements Callable<String> {
1278	<	public String call() { return TEST_STRING; }
1277	>	/**
1278	>	* Checks that timed f.get() returns the expected value, and does not
1279	>	* wait for the timeout to elapse before returning.
1280	>	*/
1281	>	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1282	>	long startTime = System.nanoTime();
1283	>	try {
1284	>	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1285	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1286	>	if (millisElapsedSince(startTime) > timeoutMillis/2)
1287	>	throw new AssertionFailedError("timed get did not return promptly");
1288		}
1289
1290	<	static class NPETask implements Callable<String> {
1291	<	public String call() { throw new NullPointerException(); }
1290	>	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1291	>	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1292		}
1293
1294	<	static class CallableOne implements Callable<Integer> {
1295	<	public Integer call() { return one; }
1294	>	/**
1295	>	* Returns a new started daemon Thread running the given runnable.
1296	>	*/
1297	>	Thread newStartedThread(Runnable runnable) {
1298	>	Thread t = new Thread(runnable);
1299	>	t.setDaemon(true);
1300	>	t.start();
1301	>	return t;
1302		}
1303
1304	<	class ShortRunnable implements Runnable {
1305	<	public void run() {
1306	<	try {
1307	<	Thread.sleep(SHORT_DELAY_MS);
1308	<	}
1309	<	catch(Exception e) {
1310	<	threadUnexpectedException();
1304	>	/**
1305	>	* Waits for the specified time (in milliseconds) for the thread
1306	>	* to terminate (using {@link Thread#join(long)}), else interrupts
1307	>	* the thread (in the hope that it may terminate later) and fails.
1308	>	*/
1309	>	void awaitTermination(Thread t, long timeoutMillis) {
1310	>	try {
1311	>	t.join(timeoutMillis);
1312	>	} catch (InterruptedException fail) {
1313	>	threadUnexpectedException(fail);
1314	>	} finally {
1315	>	if (t.getState() != Thread.State.TERMINATED) {
1316	>	t.interrupt();
1317	>	threadFail("timed out waiting for thread to terminate");
1318		}
1319		}
1320		}
1321
1322	<	class ShortInterruptedRunnable implements Runnable {
1323	<	public void run() {
1322	>	/**
1323	>	* Waits for LONG_DELAY_MS milliseconds for the thread to
1324	>	* terminate (using {@link Thread#join(long)}), else interrupts
1325	>	* the thread (in the hope that it may terminate later) and fails.
1326	>	*/
1327	>	void awaitTermination(Thread t) {
1328	>	awaitTermination(t, LONG_DELAY_MS);
1329	>	}
1330	>
1331	>	// Some convenient Runnable classes
1332	>
1333	>	public abstract class CheckedRunnable implements Runnable {
1334	>	protected abstract void realRun() throws Throwable;
1335	>
1336	>	public final void run() {
1337		try {
1338	<	Thread.sleep(SHORT_DELAY_MS);
1339	<	threadShouldThrow();
1340	<	}
395	<	catch(InterruptedException success) {
1338	>	realRun();
1339	>	} catch (Throwable fail) {
1340	>	threadUnexpectedException(fail);
1341		}
1342		}
1343		}
1344
1345	<	class SmallRunnable implements Runnable {
1346	<	public void run() {
1345	>	public abstract class RunnableShouldThrow implements Runnable {
1346	>	protected abstract void realRun() throws Throwable;
1347	>
1348	>	final Class<?> exceptionClass;
1349	>
1350	>	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
1351	>	this.exceptionClass = exceptionClass;
1352	>	}
1353	>
1354	>	public final void run() {
1355		try {
1356	<	Thread.sleep(SMALL_DELAY_MS);
1357	<	}
1358	<	catch(Exception e) {
1359	<	threadUnexpectedException();
1356	>	realRun();
1357	>	threadShouldThrow(exceptionClass.getSimpleName());
1358	>	} catch (Throwable t) {
1359	>	if (! exceptionClass.isInstance(t))
1360	>	threadUnexpectedException(t);
1361		}
1362		}
1363		}
1364
1365	<	class SmallPossiblyInterruptedRunnable implements Runnable {
1366	<	public void run() {
1365	>	public abstract class ThreadShouldThrow extends Thread {
1366	>	protected abstract void realRun() throws Throwable;
1367	>
1368	>	final Class<?> exceptionClass;
1369	>
1370	>	<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) {
1371	>	this.exceptionClass = exceptionClass;
1372	>	}
1373	>
1374	>	public final void run() {
1375		try {
1376	<	Thread.sleep(SMALL_DELAY_MS);
1377	<	}
1378	<	catch(Exception e) {
1376	>	realRun();
1377	>	threadShouldThrow(exceptionClass.getSimpleName());
1378	>	} catch (Throwable t) {
1379	>	if (! exceptionClass.isInstance(t))
1380	>	threadUnexpectedException(t);
1381		}
1382		}
1383		}
1384
1385	<	class SmallCallable implements Callable {
1386	<	public Object call() {
1385	>	public abstract class CheckedInterruptedRunnable implements Runnable {
1386	>	protected abstract void realRun() throws Throwable;
1387	>
1388	>	public final void run() {
1389		try {
1390	<	Thread.sleep(SMALL_DELAY_MS);
1391	<	}
1392	<	catch(Exception e) {
1393	<	threadUnexpectedException();
1390	>	realRun();
1391	>	threadShouldThrow("InterruptedException");
1392	>	} catch (InterruptedException success) {
1393	>	threadAssertFalse(Thread.interrupted());
1394	>	} catch (Throwable fail) {
1395	>	threadUnexpectedException(fail);
1396		}
429	–	return Boolean.TRUE;
1397		}
1398		}
1399
1400	<	class SmallInterruptedRunnable implements Runnable {
1401	<	public void run() {
1400	>	public abstract class CheckedCallable<T> implements Callable<T> {
1401	>	protected abstract T realCall() throws Throwable;
1402	>
1403	>	public final T call() {
1404		try {
1405	<	Thread.sleep(SMALL_DELAY_MS);
1406	<	threadShouldThrow();
1407	<	}
1408	<	catch(InterruptedException success) {
1405	>	return realCall();
1406	>	} catch (Throwable fail) {
1407	>	threadUnexpectedException(fail);
1408	>	return null;
1409		}
1410		}
1411		}
1412
1413	+	public abstract class CheckedInterruptedCallable<T>
1414	+	implements Callable<T> {
1415	+	protected abstract T realCall() throws Throwable;
1416
1417	<	class MediumRunnable implements Runnable {
446	<	public void run() {
1417	>	public final T call() {
1418		try {
1419	<	Thread.sleep(MEDIUM_DELAY_MS);
1420	<	}
1421	<	catch(Exception e) {
1422	<	threadUnexpectedException();
1419	>	T result = realCall();
1420	>	threadShouldThrow("InterruptedException");
1421	>	return result;
1422	>	} catch (InterruptedException success) {
1423	>	threadAssertFalse(Thread.interrupted());
1424	>	} catch (Throwable fail) {
1425	>	threadUnexpectedException(fail);
1426		}
1427	+	return null;
1428		}
1429		}
1430
1431	<	class MediumInterruptedRunnable implements Runnable {
1432	<	public void run() {
1431	>	public static class NoOpRunnable implements Runnable {
1432	>	public void run() {}
1433	>	}
1434	>
1435	>	public static class NoOpCallable implements Callable {
1436	>	public Object call() { return Boolean.TRUE; }
1437	>	}
1438	>
1439	>	public static final String TEST_STRING = "a test string";
1440	>
1441	>	public static class StringTask implements Callable<String> {
1442	>	final String value;
1443	>	public StringTask() { this(TEST_STRING); }
1444	>	public StringTask(String value) { this.value = value; }
1445	>	public String call() { return value; }
1446	>	}
1447	>
1448	>	public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1449	>	return new CheckedCallable<String>() {
1450	>	protected String realCall() {
1451	>	try {
1452	>	latch.await();
1453	>	} catch (InterruptedException quittingTime) {}
1454	>	return TEST_STRING;
1455	>	}};
1456	>	}
1457	>
1458	>	public Runnable countDowner(final CountDownLatch latch) {
1459	>	return new CheckedRunnable() {
1460	>	public void realRun() throws InterruptedException {
1461	>	latch.countDown();
1462	>	}};
1463	>	}
1464	>
1465	>	class LatchAwaiter extends CheckedRunnable {
1466	>	static final int NEW = 0;
1467	>	static final int RUNNING = 1;
1468	>	static final int DONE = 2;
1469	>	final CountDownLatch latch;
1470	>	int state = NEW;
1471	>	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1472	>	public void realRun() throws InterruptedException {
1473	>	state = 1;
1474	>	await(latch);
1475	>	state = 2;
1476	>	}
1477	>	}
1478	>
1479	>	public LatchAwaiter awaiter(CountDownLatch latch) {
1480	>	return new LatchAwaiter(latch);
1481	>	}
1482	>
1483	>	public void await(CountDownLatch latch, long timeoutMillis) {
1484	>	try {
1485	>	if (!latch.await(timeoutMillis, MILLISECONDS))
1486	>	fail("timed out waiting for CountDownLatch for "
1487	>	+ (timeoutMillis/1000) + " sec");
1488	>	} catch (Throwable fail) {
1489	>	threadUnexpectedException(fail);
1490	>	}
1491	>	}
1492	>
1493	>	public void await(CountDownLatch latch) {
1494	>	await(latch, LONG_DELAY_MS);
1495	>	}
1496	>
1497	>	public void await(Semaphore semaphore) {
1498	>	try {
1499	>	if (!semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS))
1500	>	fail("timed out waiting for Semaphore for "
1501	>	+ (LONG_DELAY_MS/1000) + " sec");
1502	>	} catch (Throwable fail) {
1503	>	threadUnexpectedException(fail);
1504	>	}
1505	>	}
1506	>
1507	>	//     /**
1508	>	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1509	>	//      */
1510	>	//     public void await(AtomicBoolean flag) {
1511	>	//         await(flag, LONG_DELAY_MS);
1512	>	//     }
1513	>
1514	>	//     /**
1515	>	//      * Spin-waits up to the specified timeout until flag becomes true.
1516	>	//      */
1517	>	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1518	>	//         long startTime = System.nanoTime();
1519	>	//         while (!flag.get()) {
1520	>	//             if (millisElapsedSince(startTime) > timeoutMillis)
1521	>	//                 throw new AssertionFailedError("timed out");
1522	>	//             Thread.yield();
1523	>	//         }
1524	>	//     }
1525	>
1526	>	public static class NPETask implements Callable<String> {
1527	>	public String call() { throw new NullPointerException(); }
1528	>	}
1529	>
1530	>	public static class CallableOne implements Callable<Integer> {
1531	>	public Integer call() { return one; }
1532	>	}
1533	>
1534	>	public class ShortRunnable extends CheckedRunnable {
1535	>	protected void realRun() throws Throwable {
1536	>	delay(SHORT_DELAY_MS);
1537	>	}
1538	>	}
1539	>
1540	>	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1541	>	protected void realRun() throws InterruptedException {
1542	>	delay(SHORT_DELAY_MS);
1543	>	}
1544	>	}
1545	>
1546	>	public class SmallRunnable extends CheckedRunnable {
1547	>	protected void realRun() throws Throwable {
1548	>	delay(SMALL_DELAY_MS);
1549	>	}
1550	>	}
1551	>
1552	>	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1553	>	protected void realRun() {
1554		try {
1555	<	Thread.sleep(MEDIUM_DELAY_MS);
1556	<	threadShouldThrow();
461	<	}
462	<	catch(InterruptedException success) {
463	<	}
1555	>	delay(SMALL_DELAY_MS);
1556	>	} catch (InterruptedException ok) {}
1557		}
1558		}
1559
1560	<	class MediumPossiblyInterruptedRunnable implements Runnable {
1561	<	public void run() {
1560	>	public class SmallCallable extends CheckedCallable {
1561	>	protected Object realCall() throws InterruptedException {
1562	>	delay(SMALL_DELAY_MS);
1563	>	return Boolean.TRUE;
1564	>	}
1565	>	}
1566	>
1567	>	public class MediumRunnable extends CheckedRunnable {
1568	>	protected void realRun() throws Throwable {
1569	>	delay(MEDIUM_DELAY_MS);
1570	>	}
1571	>	}
1572	>
1573	>	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1574	>	protected void realRun() throws InterruptedException {
1575	>	delay(MEDIUM_DELAY_MS);
1576	>	}
1577	>	}
1578	>
1579	>	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1580	>	return new CheckedRunnable() {
1581	>	protected void realRun() {
1582	>	try {
1583	>	delay(timeoutMillis);
1584	>	} catch (InterruptedException ok) {}
1585	>	}};
1586	>	}
1587	>
1588	>	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1589	>	protected void realRun() {
1590		try {
1591	<	Thread.sleep(MEDIUM_DELAY_MS);
1592	<	}
472	<	catch(InterruptedException success) {
473	<	}
1591	>	delay(MEDIUM_DELAY_MS);
1592	>	} catch (InterruptedException ok) {}
1593		}
1594		}
1595
1596	<	class LongPossiblyInterruptedRunnable implements Runnable {
1597	<	public void run() {
1596	>	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1597	>	protected void realRun() {
1598		try {
1599	<	Thread.sleep(LONG_DELAY_MS);
1600	<	}
482	<	catch(InterruptedException success) {
483	<	}
1599	>	delay(LONG_DELAY_MS);
1600	>	} catch (InterruptedException ok) {}
1601		}
1602		}
1603
1604		/**
1605		* For use as ThreadFactory in constructors
1606		*/
1607	<	static class SimpleThreadFactory implements ThreadFactory{
1608	<	public Thread newThread(Runnable r){
1607	>	public static class SimpleThreadFactory implements ThreadFactory {
1608	>	public Thread newThread(Runnable r) {
1609		return new Thread(r);
1610	<	}
1610	>	}
1611	>	}
1612	>
1613	>	public interface TrackedRunnable extends Runnable {
1614	>	boolean isDone();
1615	>	}
1616	>
1617	>	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1618	>	return new TrackedRunnable() {
1619	>	private volatile boolean done = false;
1620	>	public boolean isDone() { return done; }
1621	>	public void run() {
1622	>	try {
1623	>	delay(timeoutMillis);
1624	>	done = true;
1625	>	} catch (InterruptedException ok) {}
1626	>	}
1627	>	};
1628		}
1629
1630	<	static class TrackedShortRunnable implements Runnable {
1631	<	volatile boolean done = false;
1630	>	public static class TrackedShortRunnable implements Runnable {
1631	>	public volatile boolean done = false;
1632		public void run() {
1633		try {
1634	<	Thread.sleep(SMALL_DELAY_MS);
1634	>	delay(SHORT_DELAY_MS);
1635		done = true;
1636	<	} catch(Exception e){
503	<	}
1636	>	} catch (InterruptedException ok) {}
1637		}
1638		}
1639
1640	<	static class TrackedMediumRunnable implements Runnable {
1641	<	volatile boolean done = false;
1640	>	public static class TrackedSmallRunnable implements Runnable {
1641	>	public volatile boolean done = false;
1642		public void run() {
1643		try {
1644	<	Thread.sleep(MEDIUM_DELAY_MS);
1644	>	delay(SMALL_DELAY_MS);
1645		done = true;
1646	<	} catch(Exception e){
514	<	}
1646	>	} catch (InterruptedException ok) {}
1647		}
1648		}
1649
1650	<	static class TrackedLongRunnable implements Runnable {
1651	<	volatile boolean done = false;
1650	>	public static class TrackedMediumRunnable implements Runnable {
1651	>	public volatile boolean done = false;
1652		public void run() {
1653		try {
1654	<	Thread.sleep(LONG_DELAY_MS);
1654	>	delay(MEDIUM_DELAY_MS);
1655		done = true;
1656	<	} catch(Exception e){
525	<	}
1656	>	} catch (InterruptedException ok) {}
1657		}
1658		}
1659
1660	<	static class TrackedNoOpRunnable implements Runnable {
1661	<	volatile boolean done = false;
1660	>	public static class TrackedLongRunnable implements Runnable {
1661	>	public volatile boolean done = false;
1662	>	public void run() {
1663	>	try {
1664	>	delay(LONG_DELAY_MS);
1665	>	done = true;
1666	>	} catch (InterruptedException ok) {}
1667	>	}
1668	>	}
1669	>
1670	>	public static class TrackedNoOpRunnable implements Runnable {
1671	>	public volatile boolean done = false;
1672		public void run() {
1673		done = true;
1674		}
1675		}
1676
1677	<	static class TrackedCallable implements Callable {
1678	<	volatile boolean done = false;
1677	>	public static class TrackedCallable implements Callable {
1678	>	public volatile boolean done = false;
1679		public Object call() {
1680		try {
1681	<	Thread.sleep(SMALL_DELAY_MS);
1681	>	delay(SMALL_DELAY_MS);
1682		done = true;
1683	<	} catch(Exception e){
543	<	}
1683	>	} catch (InterruptedException ok) {}
1684		return Boolean.TRUE;
1685		}
1686		}
1687
1688	+	/**
1689	+	* Analog of CheckedRunnable for RecursiveAction
1690	+	*/
1691	+	public abstract class CheckedRecursiveAction extends RecursiveAction {
1692	+	protected abstract void realCompute() throws Throwable;
1693	+
1694	+	@Override protected final void compute() {
1695	+	try {
1696	+	realCompute();
1697	+	} catch (Throwable fail) {
1698	+	threadUnexpectedException(fail);
1699	+	}
1700	+	}
1701	+	}
1702	+
1703	+	/**
1704	+	* Analog of CheckedCallable for RecursiveTask
1705	+	*/
1706	+	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1707	+	protected abstract T realCompute() throws Throwable;
1708	+
1709	+	@Override protected final T compute() {
1710	+	try {
1711	+	return realCompute();
1712	+	} catch (Throwable fail) {
1713	+	threadUnexpectedException(fail);
1714	+	return null;
1715	+	}
1716	+	}
1717	+	}
1718
1719		/**
1720		* For use as RejectedExecutionHandler in constructors
1721		*/
1722	<	static class NoOpREHandler implements RejectedExecutionHandler{
1723	<	public void rejectedExecution(Runnable r, ThreadPoolExecutor executor){}
1722	>	public static class NoOpREHandler implements RejectedExecutionHandler {
1723	>	public void rejectedExecution(Runnable r,
1724	>	ThreadPoolExecutor executor) {}
1725	>	}
1726	>
1727	>	/**
1728	>	* A CyclicBarrier that uses timed await and fails with
1729	>	* AssertionFailedErrors instead of throwing checked exceptions.
1730	>	*/
1731	>	public class CheckedBarrier extends CyclicBarrier {
1732	>	public CheckedBarrier(int parties) { super(parties); }
1733	>
1734	>	public int await() {
1735	>	try {
1736	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1737	>	} catch (TimeoutException timedOut) {
1738	>	throw new AssertionFailedError("timed out");
1739	>	} catch (Exception fail) {
1740	>	AssertionFailedError afe =
1741	>	new AssertionFailedError("Unexpected exception: " + fail);
1742	>	afe.initCause(fail);
1743	>	throw afe;
1744	>	}
1745	>	}
1746	>	}
1747	>
1748	>	void checkEmpty(BlockingQueue q) {
1749	>	try {
1750	>	assertTrue(q.isEmpty());
1751	>	assertEquals(0, q.size());
1752	>	assertNull(q.peek());
1753	>	assertNull(q.poll());
1754	>	assertNull(q.poll(0, MILLISECONDS));
1755	>	assertEquals(q.toString(), "[]");
1756	>	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1757	>	assertFalse(q.iterator().hasNext());
1758	>	try {
1759	>	q.element();
1760	>	shouldThrow();
1761	>	} catch (NoSuchElementException success) {}
1762	>	try {
1763	>	q.iterator().next();
1764	>	shouldThrow();
1765	>	} catch (NoSuchElementException success) {}
1766	>	try {
1767	>	q.remove();
1768	>	shouldThrow();
1769	>	} catch (NoSuchElementException success) {}
1770	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1771	>	}
1772	>
1773	>	void assertSerialEquals(Object x, Object y) {
1774	>	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1775	>	}
1776	>
1777	>	void assertNotSerialEquals(Object x, Object y) {
1778	>	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1779	>	}
1780	>
1781	>	byte[] serialBytes(Object o) {
1782	>	try {
1783	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1784	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1785	>	oos.writeObject(o);
1786	>	oos.flush();
1787	>	oos.close();
1788	>	return bos.toByteArray();
1789	>	} catch (Throwable fail) {
1790	>	threadUnexpectedException(fail);
1791	>	return new byte[0];
1792	>	}
1793	>	}
1794	>
1795	>	@SuppressWarnings("unchecked")
1796	>	<T> T serialClone(T o) {
1797	>	try {
1798	>	ObjectInputStream ois = new ObjectInputStream
1799	>	(new ByteArrayInputStream(serialBytes(o)));
1800	>	T clone = (T) ois.readObject();
1801	>	assertSame(o.getClass(), clone.getClass());
1802	>	return clone;
1803	>	} catch (Throwable fail) {
1804	>	threadUnexpectedException(fail);
1805	>	return null;
1806	>	}
1807		}
1808	<
1809	<
1808	>
1809	>	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1810	>	Runnable... throwingActions) {
1811	>	for (Runnable throwingAction : throwingActions) {
1812	>	boolean threw = false;
1813	>	try { throwingAction.run(); }
1814	>	catch (Throwable t) {
1815	>	threw = true;
1816	>	if (!expectedExceptionClass.isInstance(t)) {
1817	>	AssertionFailedError afe =
1818	>	new AssertionFailedError
1819	>	("Expected " + expectedExceptionClass.getName() +
1820	>	", got " + t.getClass().getName());
1821	>	afe.initCause(t);
1822	>	threadUnexpectedException(afe);
1823	>	}
1824	>	}
1825	>	if (!threw)
1826	>	shouldThrow(expectedExceptionClass.getName());
1827	>	}
1828	>	}
1829	>
1830	>	public void assertIteratorExhausted(Iterator<?> it) {
1831	>	try {
1832	>	it.next();
1833	>	shouldThrow();
1834	>	} catch (NoSuchElementException success) {}
1835	>	assertFalse(it.hasNext());
1836	>	}
1837	>
1838	>	public <T> Callable<T> callableThrowing(final Exception ex) {
1839	>	return new Callable<T>() { public T call() throws Exception { throw ex; }};
1840	>	}
1841	>
1842	>	public Runnable runnableThrowing(final RuntimeException ex) {
1843	>	return new Runnable() { public void run() { throw ex; }};
1844	>	}
1845	>
1846	>	/** A reusable thread pool to be shared by tests. */
1847	>	static final ExecutorService cachedThreadPool =
1848	>	new ThreadPoolExecutor(0, Integer.MAX_VALUE,
1849	>	1000L, MILLISECONDS,
1850	>	new SynchronousQueue<Runnable>());
1851	>
1852		}

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