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Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.36 by jsr166, Mon Aug 3 22:08:45 2009 UTC vs.
Revision 1.185 by jsr166, Mon Feb 22 19:36:59 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
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.*;
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 java.io.*;
19	<	import java.security.*;
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.ThreadFactory;
62	>	import java.util.concurrent.ThreadPoolExecutor;
63	>	import java.util.concurrent.TimeoutException;
64	>	import java.util.concurrent.atomic.AtomicBoolean;
65	>	import java.util.concurrent.atomic.AtomicReference;
66	>	import java.util.regex.Matcher;
67	>	import java.util.regex.Pattern;
68	>
69	>	import junit.framework.AssertionFailedError;
70	>	import junit.framework.Test;
71	>	import junit.framework.TestCase;
72	>	import junit.framework.TestResult;
73	>	import junit.framework.TestSuite;
74
75		/**
76		* Base class for JSR166 Junit TCK tests.  Defines some constants,
#	Line 23 | Line 82 | import java.security.*;
82		*
83		* <ol>
84		*
85	<	* <li> All assertions in code running in generated threads must use
85	>	* <li>All assertions in code running in generated threads must use
86		* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
87		* #threadAssertEquals}, or {@link #threadAssertNull}, (not
88	<	* <tt>fail</tt>, <tt>assertTrue</tt>, etc.) It is OK (but not
88	>	* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
89		* particularly recommended) for other code to use these forms too.
90		* Only the most typically used JUnit assertion methods are defined
91	<	* this way, but enough to live with.</li>
91	>	* this way, but enough to live with.
92		*
93	<	* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
94	<	* to invoke <tt>super.setUp</tt> and <tt>super.tearDown</tt> within
93	>	* <li>If you override {@link #setUp} or {@link #tearDown}, make sure
94	>	* to invoke {@code super.setUp} and {@code super.tearDown} within
95		* them. These methods are used to clear and check for thread
96	<	* assertion failures.</li>
96	>	* assertion failures.
97		*
98	<	* <li>All delays and timeouts must use one of the constants <tt>
99	<	* SHORT_DELAY_MS</tt>, <tt> SMALL_DELAY_MS</tt>, <tt> MEDIUM_DELAY_MS</tt>,
100	<	* <tt> LONG_DELAY_MS</tt>. The idea here is that a SHORT is always
98	>	* <li>All delays and timeouts must use one of the constants {@code
99	>	* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
100	>	* {@code LONG_DELAY_MS}. The idea here is that a SHORT is always
101		* discriminable from zero time, and always allows enough time for the
102		* small amounts of computation (creating a thread, calling a few
103		* methods, etc) needed to reach a timeout point. Similarly, a SMALL
104		* is always discriminable as larger than SHORT and smaller than
105		* MEDIUM.  And so on. These constants are set to conservative values,
106		* but even so, if there is ever any doubt, they can all be increased
107	<	* in one spot to rerun tests on slower platforms.</li>
107	>	* in one spot to rerun tests on slower platforms.
108		*
109	<	* <li> All threads generated must be joined inside each test case
110	<	* method (or <tt>fail</tt> to do so) before returning from the
111	<	* method. The <tt> joinPool</tt> method can be used to do this when
112	<	* using Executors.</li>
109	>	* <li>All threads generated must be joined inside each test case
110	>	* method (or {@code fail} to do so) before returning from the
111	>	* method. The {@code joinPool} method can be used to do this when
112	>	* using Executors.
113		*
114		* </ol>
115		*
116	<	* <p> <b>Other notes</b>
116	>	* <p><b>Other notes</b>
117		* <ul>
118		*
119	<	* <li> Usually, there is one testcase method per JSR166 method
119	>	* <li>Usually, there is one testcase method per JSR166 method
120		* covering "normal" operation, and then as many exception-testing
121		* methods as there are exceptions the method can throw. Sometimes
122		* there are multiple tests per JSR166 method when the different
123		* "normal" behaviors differ significantly. And sometimes testcases
124	<	* cover multiple methods when they cannot be tested in
66	<	* isolation.</li>
124	>	* cover multiple methods when they cannot be tested in isolation.
125		*
126	<	* <li> The documentation style for testcases is to provide as javadoc
126	>	* <li>The documentation style for testcases is to provide as javadoc
127		* a simple sentence or two describing the property that the testcase
128		* method purports to test. The javadocs do not say anything about how
129	<	* the property is tested. To find out, read the code.</li>
129	>	* the property is tested. To find out, read the code.
130		*
131	<	* <li> These tests are "conformance tests", and do not attempt to
131	>	* <li>These tests are "conformance tests", and do not attempt to
132		* test throughput, latency, scalability or other performance factors
133		* (see the separate "jtreg" tests for a set intended to check these
134		* for the most central aspects of functionality.) So, most tests use
135		* the smallest sensible numbers of threads, collection sizes, etc
136	<	* needed to check basic conformance.</li>
136	>	* needed to check basic conformance.
137		*
138		* <li>The test classes currently do not declare inclusion in
139		* any particular package to simplify things for people integrating
140	<	* them in TCK test suites.</li>
140	>	* them in TCK test suites.
141		*
142	<	* <li> As a convenience, the <tt>main</tt> of this class (JSR166TestCase)
143	<	* runs all JSR166 unit tests.</li>
142	>	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
143	>	* runs all JSR166 unit tests.
144		*
145		* </ul>
146		*/
147		public class JSR166TestCase extends TestCase {
148	+	private static final boolean useSecurityManager =
149	+	Boolean.getBoolean("jsr166.useSecurityManager");
150	+
151	+	protected static final boolean expensiveTests =
152	+	Boolean.getBoolean("jsr166.expensiveTests");
153	+
154		/**
155	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
155	>	* If true, also run tests that are not part of the official tck
156	>	* because they test unspecified implementation details.
157		*/
158	<	public static void main (String[] args) {
159	<	int iters = 1;
160	<	if (args.length > 0)
161	<	iters = Integer.parseInt(args[0]);
162	<	Test s = suite();
163	<	for (int i = 0; i < iters; ++i) {
164	<	junit.textui.TestRunner.run (s);
165	<	System.gc();
166	<	System.runFinalization();
158	>	protected static final boolean testImplementationDetails =
159	>	Boolean.getBoolean("jsr166.testImplementationDetails");
160	>
161	>	/**
162	>	* If true, report on stdout all "slow" tests, that is, ones that
163	>	* take more than profileThreshold milliseconds to execute.
164	>	*/
165	>	private static final boolean profileTests =
166	>	Boolean.getBoolean("jsr166.profileTests");
167	>
168	>	/**
169	>	* The number of milliseconds that tests are permitted for
170	>	* execution without being reported, when profileTests is set.
171	>	*/
172	>	private static final long profileThreshold =
173	>	Long.getLong("jsr166.profileThreshold", 100);
174	>
175	>	/**
176	>	* The number of repetitions per test (for tickling rare bugs).
177	>	*/
178	>	private static final int runsPerTest =
179	>	Integer.getInteger("jsr166.runsPerTest", 1);
180	>
181	>	/**
182	>	* The number of repetitions of the test suite (for finding leaks?).
183	>	*/
184	>	private static final int suiteRuns =
185	>	Integer.getInteger("jsr166.suiteRuns", 1);
186	>
187	>	private static float systemPropertyValue(String name, float defaultValue) {
188	>	String floatString = System.getProperty(name);
189	>	if (floatString == null)
190	>	return defaultValue;
191	>	try {
192	>	return Float.parseFloat(floatString);
193	>	} catch (NumberFormatException ex) {
194	>	throw new IllegalArgumentException(
195	>	String.format("Bad float value in system property %s=%s",
196	>	name, floatString));
197	>	}
198	>	}
199	>
200	>	/**
201	>	* The scaling factor to apply to standard delays used in tests.
202	>	*/
203	>	private static final float delayFactor =
204	>	systemPropertyValue("jsr166.delay.factor", 1.0f);
205	>
206	>	/**
207	>	* The timeout factor as used in the jtreg test harness.
208	>	* See: http://openjdk.java.net/jtreg/tag-spec.html
209	>	*/
210	>	private static final float jtregTestTimeoutFactor
211	>	= systemPropertyValue("test.timeout.factor", 1.0f);
212	>
213	>	public JSR166TestCase() { super(); }
214	>	public JSR166TestCase(String name) { super(name); }
215	>
216	>	/**
217	>	* A filter for tests to run, matching strings of the form
218	>	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
219	>	* Usefully combined with jsr166.runsPerTest.
220	>	*/
221	>	private static final Pattern methodFilter = methodFilter();
222	>
223	>	private static Pattern methodFilter() {
224	>	String regex = System.getProperty("jsr166.methodFilter");
225	>	return (regex == null) ? null : Pattern.compile(regex);
226	>	}
227	>
228	>	// Instrumentation to debug very rare, but very annoying hung test runs.
229	>	static volatile TestCase currentTestCase;
230	>	// static volatile int currentRun = 0;
231	>	static {
232	>	Runnable checkForWedgedTest = new Runnable() { public void run() {
233	>	// Avoid spurious reports with enormous runsPerTest.
234	>	// A single test case run should never take more than 1 second.
235	>	// But let's cap it at the high end too ...
236	>	final int timeoutMinutes =
237	>	Math.min(15, Math.max(runsPerTest / 60, 1));
238	>	for (TestCase lastTestCase = currentTestCase;;) {
239	>	try { MINUTES.sleep(timeoutMinutes); }
240	>	catch (InterruptedException unexpected) { break; }
241	>	if (lastTestCase == currentTestCase) {
242	>	System.err.printf(
243	>	"Looks like we're stuck running test: %s%n",
244	>	lastTestCase);
245	>	//                     System.err.printf(
246	>	//                         "Looks like we're stuck running test: %s (%d/%d)%n",
247	>	//                         lastTestCase, currentRun, runsPerTest);
248	>	//                     System.err.println("availableProcessors=" +
249	>	//                         Runtime.getRuntime().availableProcessors());
250	>	//                     System.err.printf("cpu model = %s%n", cpuModel());
251	>	dumpTestThreads();
252	>	// one stack dump is probably enough; more would be spam
253	>	break;
254	>	}
255	>	lastTestCase = currentTestCase;
256	>	}}};
257	>	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
258	>	thread.setDaemon(true);
259	>	thread.start();
260	>	}
261	>
262	>	//     public static String cpuModel() {
263	>	//         try {
264	>	//             Matcher matcher = Pattern.compile("model name\\s*: (.*)")
265	>	//                 .matcher(new String(
266	>	//                      Files.readAllBytes(Paths.get("/proc/cpuinfo")), "UTF-8"));
267	>	//             matcher.find();
268	>	//             return matcher.group(1);
269	>	//         } catch (Exception ex) { return null; }
270	>	//     }
271	>
272	>	public void runBare() throws Throwable {
273	>	currentTestCase = this;
274	>	if (methodFilter == null
275	>	|| methodFilter.matcher(toString()).find())
276	>	super.runBare();
277	>	}
278	>
279	>	protected void runTest() throws Throwable {
280	>	for (int i = 0; i < runsPerTest; i++) {
281	>	// currentRun = i;
282	>	if (profileTests)
283	>	runTestProfiled();
284	>	else
285	>	super.runTest();
286	>	}
287	>	}
288	>
289	>	protected void runTestProfiled() throws Throwable {
290	>	for (int i = 0; i < 2; i++) {
291	>	long startTime = System.nanoTime();
292	>	super.runTest();
293	>	long elapsedMillis = millisElapsedSince(startTime);
294	>	if (elapsedMillis < profileThreshold)
295	>	break;
296	>	// Never report first run of any test; treat it as a
297	>	// warmup run, notably to trigger all needed classloading,
298	>	if (i > 0)
299	>	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
300	>	}
301	>	}
302	>
303	>	/**
304	>	* Runs all JSR166 unit tests using junit.textui.TestRunner.
305	>	*/
306	>	public static void main(String[] args) {
307	>	main(suite(), args);
308	>	}
309	>
310	>	static class PithyResultPrinter extends junit.textui.ResultPrinter {
311	>	PithyResultPrinter(java.io.PrintStream writer) { super(writer); }
312	>	long runTime;
313	>	public void startTest(Test test) {}
314	>	protected void printHeader(long runTime) {
315	>	this.runTime = runTime; // defer printing for later
316	>	}
317	>	protected void printFooter(TestResult result) {
318	>	if (result.wasSuccessful()) {
319	>	getWriter().println("OK (" + result.runCount() + " tests)"
320	>	+ "  Time: " + elapsedTimeAsString(runTime));
321	>	} else {
322	>	getWriter().println("Time: " + elapsedTimeAsString(runTime));
323	>	super.printFooter(result);
324	>	}
325		}
103	–	System.exit(0);
326		}
327
328		/**
329	<	* Collects all JSR166 unit tests as one suite
329	>	* Returns a TestRunner that doesn't bother with unnecessary
330	>	* fluff, like printing a "." for each test case.
331		*/
332	<	public static Test suite ( ) {
333	<	TestSuite suite = new TestSuite("JSR166 Unit Tests");
332	>	static junit.textui.TestRunner newPithyTestRunner() {
333	>	junit.textui.TestRunner runner = new junit.textui.TestRunner();
334	>	runner.setPrinter(new PithyResultPrinter(System.out));
335	>	return runner;
336	>	}
337
338	<	suite.addTest(new TestSuite(ForkJoinPoolTest.class));
339	<	suite.addTest(new TestSuite(ForkJoinTaskTest.class));
340	<	suite.addTest(new TestSuite(RecursiveActionTest.class));
341	<	suite.addTest(new TestSuite(RecursiveTaskTest.class));
342	<	suite.addTest(new TestSuite(LinkedTransferQueueTest.class));
343	<	suite.addTest(new TestSuite(PhaserTest.class));
344	<	suite.addTest(new TestSuite(ThreadLocalRandomTest.class));
345	<	suite.addTest(new TestSuite(AbstractExecutorServiceTest.class));
346	<	suite.addTest(new TestSuite(AbstractQueueTest.class));
347	<	suite.addTest(new TestSuite(AbstractQueuedSynchronizerTest.class));
348	<	suite.addTest(new TestSuite(AbstractQueuedLongSynchronizerTest.class));
349	<	suite.addTest(new TestSuite(ArrayBlockingQueueTest.class));
350	<	suite.addTest(new TestSuite(ArrayDequeTest.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));
130	<	suite.addTest(new TestSuite(AtomicLongFieldUpdaterTest.class));
131	<	suite.addTest(new TestSuite(AtomicLongTest.class));
132	<	suite.addTest(new TestSuite(AtomicMarkableReferenceTest.class));
133	<	suite.addTest(new TestSuite(AtomicReferenceArrayTest.class));
134	<	suite.addTest(new TestSuite(AtomicReferenceFieldUpdaterTest.class));
135	<	suite.addTest(new TestSuite(AtomicReferenceTest.class));
136	<	suite.addTest(new TestSuite(AtomicStampedReferenceTest.class));
137	<	suite.addTest(new TestSuite(ConcurrentHashMapTest.class));
138	<	suite.addTest(new TestSuite(ConcurrentLinkedQueueTest.class));
139	<	suite.addTest(new TestSuite(ConcurrentSkipListMapTest.class));
140	<	suite.addTest(new TestSuite(ConcurrentSkipListSubMapTest.class));
141	<	suite.addTest(new TestSuite(ConcurrentSkipListSetTest.class));
142	<	suite.addTest(new TestSuite(ConcurrentSkipListSubSetTest.class));
143	<	suite.addTest(new TestSuite(CopyOnWriteArrayListTest.class));
144	<	suite.addTest(new TestSuite(CopyOnWriteArraySetTest.class));
145	<	suite.addTest(new TestSuite(CountDownLatchTest.class));
146	<	suite.addTest(new TestSuite(CyclicBarrierTest.class));
147	<	suite.addTest(new TestSuite(DelayQueueTest.class));
148	<	suite.addTest(new TestSuite(EntryTest.class));
149	<	suite.addTest(new TestSuite(ExchangerTest.class));
150	<	suite.addTest(new TestSuite(ExecutorsTest.class));
151	<	suite.addTest(new TestSuite(ExecutorCompletionServiceTest.class));
152	<	suite.addTest(new TestSuite(FutureTaskTest.class));
153	<	suite.addTest(new TestSuite(LinkedBlockingDequeTest.class));
154	<	suite.addTest(new TestSuite(LinkedBlockingQueueTest.class));
155	<	suite.addTest(new TestSuite(LinkedListTest.class));
156	<	suite.addTest(new TestSuite(LockSupportTest.class));
157	<	suite.addTest(new TestSuite(PriorityBlockingQueueTest.class));
158	<	suite.addTest(new TestSuite(PriorityQueueTest.class));
159	<	suite.addTest(new TestSuite(ReentrantLockTest.class));
160	<	suite.addTest(new TestSuite(ReentrantReadWriteLockTest.class));
161	<	suite.addTest(new TestSuite(ScheduledExecutorTest.class));
162	<	suite.addTest(new TestSuite(ScheduledExecutorSubclassTest.class));
163	<	suite.addTest(new TestSuite(SemaphoreTest.class));
164	<	suite.addTest(new TestSuite(SynchronousQueueTest.class));
165	<	suite.addTest(new TestSuite(SystemTest.class));
166	<	suite.addTest(new TestSuite(ThreadLocalTest.class));
167	<	suite.addTest(new TestSuite(ThreadPoolExecutorTest.class));
168	<	suite.addTest(new TestSuite(ThreadPoolExecutorSubclassTest.class));
169	<	suite.addTest(new TestSuite(ThreadTest.class));
170	<	suite.addTest(new TestSuite(TimeUnitTest.class));
171	<	suite.addTest(new TestSuite(TreeMapTest.class));
172	<	suite.addTest(new TestSuite(TreeSetTest.class));
173	<	suite.addTest(new TestSuite(TreeSubMapTest.class));
174	<	suite.addTest(new TestSuite(TreeSubSetTest.class));
338	>	/**
339	>	* Runs all unit tests in the given test suite.
340	>	* Actual behavior influenced by jsr166.* system properties.
341	>	*/
342	>	static void main(Test suite, String[] args) {
343	>	if (useSecurityManager) {
344	>	System.err.println("Setting a permissive security manager");
345	>	Policy.setPolicy(permissivePolicy());
346	>	System.setSecurityManager(new SecurityManager());
347	>	}
348	>	for (int i = 0; i < suiteRuns; i++) {
349	>	TestResult result = newPithyTestRunner().doRun(suite);
350	>	if (!result.wasSuccessful())
351	>	System.exit(1);
352	>	System.gc();
353	>	System.runFinalization();
354	>	}
355	>	}
356
357	+	public static TestSuite newTestSuite(Object... suiteOrClasses) {
358	+	TestSuite suite = new TestSuite();
359	+	for (Object suiteOrClass : suiteOrClasses) {
360	+	if (suiteOrClass instanceof TestSuite)
361	+	suite.addTest((TestSuite) suiteOrClass);
362	+	else if (suiteOrClass instanceof Class)
363	+	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
364	+	else
365	+	throw new ClassCastException("not a test suite or class");
366	+	}
367		return suite;
368		}
369
370	+	public static void addNamedTestClasses(TestSuite suite,
371	+	String... testClassNames) {
372	+	for (String testClassName : testClassNames) {
373	+	try {
374	+	Class<?> testClass = Class.forName(testClassName);
375	+	Method m = testClass.getDeclaredMethod("suite",
376	+	new Class<?>[0]);
377	+	suite.addTest(newTestSuite((Test)m.invoke(null)));
378	+	} catch (Exception e) {
379	+	throw new Error("Missing test class", e);
380	+	}
381	+	}
382	+	}
383	+
384	+	public static final double JAVA_CLASS_VERSION;
385	+	public static final String JAVA_SPECIFICATION_VERSION;
386	+	static {
387	+	try {
388	+	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
389	+	new java.security.PrivilegedAction<Double>() {
390	+	public Double run() {
391	+	return Double.valueOf(System.getProperty("java.class.version"));}});
392	+	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
393	+	new java.security.PrivilegedAction<String>() {
394	+	public String run() {
395	+	return System.getProperty("java.specification.version");}});
396	+	} catch (Throwable t) {
397	+	throw new Error(t);
398	+	}
399	+	}
400	+
401	+	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
402	+	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
403	+	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
404	+	public static boolean atLeastJava9() {
405	+	return JAVA_CLASS_VERSION >= 53.0
406	+	// As of 2015-09, java9 still uses 52.0 class file version
407	+	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?(9|[0-9][0-9])$");
408	+	}
409	+	public static boolean atLeastJava10() {
410	+	return JAVA_CLASS_VERSION >= 54.0
411	+	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?[0-9][0-9]$");
412	+	}
413	+
414	+	/**
415	+	* Collects all JSR166 unit tests as one suite.
416	+	*/
417	+	public static Test suite() {
418	+	// Java7+ test classes
419	+	TestSuite suite = newTestSuite(
420	+	ForkJoinPoolTest.suite(),
421	+	ForkJoinTaskTest.suite(),
422	+	RecursiveActionTest.suite(),
423	+	RecursiveTaskTest.suite(),
424	+	LinkedTransferQueueTest.suite(),
425	+	PhaserTest.suite(),
426	+	ThreadLocalRandomTest.suite(),
427	+	AbstractExecutorServiceTest.suite(),
428	+	AbstractQueueTest.suite(),
429	+	AbstractQueuedSynchronizerTest.suite(),
430	+	AbstractQueuedLongSynchronizerTest.suite(),
431	+	ArrayBlockingQueueTest.suite(),
432	+	ArrayDequeTest.suite(),
433	+	AtomicBooleanTest.suite(),
434	+	AtomicIntegerArrayTest.suite(),
435	+	AtomicIntegerFieldUpdaterTest.suite(),
436	+	AtomicIntegerTest.suite(),
437	+	AtomicLongArrayTest.suite(),
438	+	AtomicLongFieldUpdaterTest.suite(),
439	+	AtomicLongTest.suite(),
440	+	AtomicMarkableReferenceTest.suite(),
441	+	AtomicReferenceArrayTest.suite(),
442	+	AtomicReferenceFieldUpdaterTest.suite(),
443	+	AtomicReferenceTest.suite(),
444	+	AtomicStampedReferenceTest.suite(),
445	+	ConcurrentHashMapTest.suite(),
446	+	ConcurrentLinkedDequeTest.suite(),
447	+	ConcurrentLinkedQueueTest.suite(),
448	+	ConcurrentSkipListMapTest.suite(),
449	+	ConcurrentSkipListSubMapTest.suite(),
450	+	ConcurrentSkipListSetTest.suite(),
451	+	ConcurrentSkipListSubSetTest.suite(),
452	+	CopyOnWriteArrayListTest.suite(),
453	+	CopyOnWriteArraySetTest.suite(),
454	+	CountDownLatchTest.suite(),
455	+	CyclicBarrierTest.suite(),
456	+	DelayQueueTest.suite(),
457	+	EntryTest.suite(),
458	+	ExchangerTest.suite(),
459	+	ExecutorsTest.suite(),
460	+	ExecutorCompletionServiceTest.suite(),
461	+	FutureTaskTest.suite(),
462	+	LinkedBlockingDequeTest.suite(),
463	+	LinkedBlockingQueueTest.suite(),
464	+	LinkedListTest.suite(),
465	+	LockSupportTest.suite(),
466	+	PriorityBlockingQueueTest.suite(),
467	+	PriorityQueueTest.suite(),
468	+	ReentrantLockTest.suite(),
469	+	ReentrantReadWriteLockTest.suite(),
470	+	ScheduledExecutorTest.suite(),
471	+	ScheduledExecutorSubclassTest.suite(),
472	+	SemaphoreTest.suite(),
473	+	SynchronousQueueTest.suite(),
474	+	SystemTest.suite(),
475	+	ThreadLocalTest.suite(),
476	+	ThreadPoolExecutorTest.suite(),
477	+	ThreadPoolExecutorSubclassTest.suite(),
478	+	ThreadTest.suite(),
479	+	TimeUnitTest.suite(),
480	+	TreeMapTest.suite(),
481	+	TreeSetTest.suite(),
482	+	TreeSubMapTest.suite(),
483	+	TreeSubSetTest.suite());
484	+
485	+	// Java8+ test classes
486	+	if (atLeastJava8()) {
487	+	String[] java8TestClassNames = {
488	+	"Atomic8Test",
489	+	"CompletableFutureTest",
490	+	"ConcurrentHashMap8Test",
491	+	"CountedCompleterTest",
492	+	"DoubleAccumulatorTest",
493	+	"DoubleAdderTest",
494	+	"ForkJoinPool8Test",
495	+	"ForkJoinTask8Test",
496	+	"LongAccumulatorTest",
497	+	"LongAdderTest",
498	+	"SplittableRandomTest",
499	+	"StampedLockTest",
500	+	"SubmissionPublisherTest",
501	+	"ThreadLocalRandom8Test",
502	+	};
503	+	addNamedTestClasses(suite, java8TestClassNames);
504	+	}
505	+
506	+	// Java9+ test classes
507	+	if (atLeastJava9()) {
508	+	String[] java9TestClassNames = {
509	+	// Currently empty, but expecting varhandle tests
510	+	};
511	+	addNamedTestClasses(suite, java9TestClassNames);
512	+	}
513	+
514	+	return suite;
515	+	}
516	+
517	+	/** Returns list of junit-style test method names in given class. */
518	+	public static ArrayList<String> testMethodNames(Class<?> testClass) {
519	+	Method[] methods = testClass.getDeclaredMethods();
520	+	ArrayList<String> names = new ArrayList<String>(methods.length);
521	+	for (Method method : methods) {
522	+	if (method.getName().startsWith("test")
523	+	&& Modifier.isPublic(method.getModifiers())
524	+	// method.getParameterCount() requires jdk8+
525	+	&& method.getParameterTypes().length == 0) {
526	+	names.add(method.getName());
527	+	}
528	+	}
529	+	return names;
530	+	}
531	+
532	+	/**
533	+	* Returns junit-style testSuite for the given test class, but
534	+	* parameterized by passing extra data to each test.
535	+	*/
536	+	public static <ExtraData> Test parameterizedTestSuite
537	+	(Class<? extends JSR166TestCase> testClass,
538	+	Class<ExtraData> dataClass,
539	+	ExtraData data) {
540	+	try {
541	+	TestSuite suite = new TestSuite();
542	+	Constructor c =
543	+	testClass.getDeclaredConstructor(dataClass, String.class);
544	+	for (String methodName : testMethodNames(testClass))
545	+	suite.addTest((Test) c.newInstance(data, methodName));
546	+	return suite;
547	+	} catch (Exception e) {
548	+	throw new Error(e);
549	+	}
550	+	}
551	+
552	+	/**
553	+	* Returns junit-style testSuite for the jdk8 extension of the
554	+	* given test class, but parameterized by passing extra data to
555	+	* each test.  Uses reflection to allow compilation in jdk7.
556	+	*/
557	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
558	+	(Class<? extends JSR166TestCase> testClass,
559	+	Class<ExtraData> dataClass,
560	+	ExtraData data) {
561	+	if (atLeastJava8()) {
562	+	String name = testClass.getName();
563	+	String name8 = name.replaceAll("Test$", "8Test");
564	+	if (name.equals(name8)) throw new Error(name);
565	+	try {
566	+	return (Test)
567	+	Class.forName(name8)
568	+	.getMethod("testSuite", new Class[] { dataClass })
569	+	.invoke(null, data);
570	+	} catch (Exception e) {
571	+	throw new Error(e);
572	+	}
573	+	} else {
574	+	return new TestSuite();
575	+	}
576	+	}
577	+
578	+	// Delays for timing-dependent tests, in milliseconds.
579
580		public static long SHORT_DELAY_MS;
581		public static long SMALL_DELAY_MS;
582		public static long MEDIUM_DELAY_MS;
583		public static long LONG_DELAY_MS;
584
185	–
585		/**
586	<	* Returns the shortest timed delay. This could
587	<	* be reimplemented to use for example a Property.
586	>	* Returns the shortest timed delay. This can be scaled up for
587	>	* slow machines using the jsr166.delay.factor system property,
588	>	* or via jtreg's -timeoutFactor:<val> flag.
589	>	* http://openjdk.java.net/jtreg/command-help.html
590		*/
591		protected long getShortDelay() {
592	<	return 50;
592	>	return (long) (50 * delayFactor * jtregTestTimeoutFactor);
593		}
594
194	–
595		/**
596		* Sets delays as multiples of SHORT_DELAY.
597		*/
598	<	protected  void setDelays() {
598	>	protected void setDelays() {
599		SHORT_DELAY_MS = getShortDelay();
600	<	SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
600	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
601		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
602	<	LONG_DELAY_MS = SHORT_DELAY_MS * 50;
602	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
603	>	}
604	>
605	>	/**
606	>	* Returns a timeout in milliseconds to be used in tests that
607	>	* verify that operations block or time out.
608	>	*/
609	>	long timeoutMillis() {
610	>	return SHORT_DELAY_MS / 4;
611		}
612
613		/**
614	<	* Flag set true if any threadAssert methods fail
614	>	* Returns a new Date instance representing a time at least
615	>	* delayMillis milliseconds in the future.
616		*/
617	<	volatile boolean threadFailed;
617	>	Date delayedDate(long delayMillis) {
618	>	// Add 1 because currentTimeMillis is known to round into the past.
619	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
620	>	}
621	>
622	>	/**
623	>	* The first exception encountered if any threadAssertXXX method fails.
624	>	*/
625	>	private final AtomicReference<Throwable> threadFailure
626	>	= new AtomicReference<Throwable>(null);
627
628		/**
629	<	* Initializes test to indicate that no thread assertions have failed
629	>	* Records an exception so that it can be rethrown later in the test
630	>	* harness thread, triggering a test case failure.  Only the first
631	>	* failure is recorded; subsequent calls to this method from within
632	>	* the same test have no effect.
633		*/
634	+	public void threadRecordFailure(Throwable t) {
635	+	System.err.println(t);
636	+	dumpTestThreads();
637	+	threadFailure.compareAndSet(null, t);
638	+	}
639	+
640		public void setUp() {
641		setDelays();
642	<	threadFailed = false;
642	>	}
643	>
644	>	void tearDownFail(String format, Object... args) {
645	>	String msg = toString() + ": " + String.format(format, args);
646	>	System.err.println(msg);
647	>	dumpTestThreads();
648	>	throw new AssertionFailedError(msg);
649	>	}
650	>
651	>	/**
652	>	* Extra checks that get done for all test cases.
653	>	*
654	>	* Triggers test case failure if any thread assertions have failed,
655	>	* by rethrowing, in the test harness thread, any exception recorded
656	>	* earlier by threadRecordFailure.
657	>	*
658	>	* Triggers test case failure if interrupt status is set in the main thread.
659	>	*/
660	>	public void tearDown() throws Exception {
661	>	Throwable t = threadFailure.getAndSet(null);
662	>	if (t != null) {
663	>	if (t instanceof Error)
664	>	throw (Error) t;
665	>	else if (t instanceof RuntimeException)
666	>	throw (RuntimeException) t;
667	>	else if (t instanceof Exception)
668	>	throw (Exception) t;
669	>	else {
670	>	AssertionFailedError afe =
671	>	new AssertionFailedError(t.toString());
672	>	afe.initCause(t);
673	>	throw afe;
674	>	}
675	>	}
676	>
677	>	if (Thread.interrupted())
678	>	tearDownFail("interrupt status set in main thread");
679	>
680	>	checkForkJoinPoolThreadLeaks();
681		}
682
683		/**
684	<	* Triggers test case failure if any thread assertions have failed
684	>	* Finds missing PoolCleaners
685		*/
686	<	public void tearDown() {
687	<	assertFalse(threadFailed);
686	>	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
687	>	Thread[] survivors = new Thread[7];
688	>	int count = Thread.enumerate(survivors);
689	>	for (int i = 0; i < count; i++) {
690	>	Thread thread = survivors[i];
691	>	String name = thread.getName();
692	>	if (name.startsWith("ForkJoinPool-")) {
693	>	// give thread some time to terminate
694	>	thread.join(LONG_DELAY_MS);
695	>	if (thread.isAlive())
696	>	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
697	>	thread);
698	>	}
699	>	}
700	>
701	>	if (!ForkJoinPool.commonPool()
702	>	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
703	>	tearDownFail("ForkJoin common pool thread stuck");
704		}
705
706		/**
707	<	* Fail, also setting status to indicate current testcase should fail
707	>	* Just like fail(reason), but additionally recording (using
708	>	* threadRecordFailure) any AssertionFailedError thrown, so that
709	>	* the current testcase will fail.
710		*/
711		public void threadFail(String reason) {
712	<	threadFailed = true;
713	<	fail(reason);
712	>	try {
713	>	fail(reason);
714	>	} catch (AssertionFailedError t) {
715	>	threadRecordFailure(t);
716	>	throw t;
717	>	}
718		}
719
720		/**
721	<	* If expression not true, set status to indicate current testcase
722	<	* should fail
721	>	* Just like assertTrue(b), but additionally recording (using
722	>	* threadRecordFailure) any AssertionFailedError thrown, so that
723	>	* the current testcase will fail.
724		*/
725		public void threadAssertTrue(boolean b) {
726	<	if (!b) {
239	<	threadFailed = true;
726	>	try {
727		assertTrue(b);
728	+	} catch (AssertionFailedError t) {
729	+	threadRecordFailure(t);
730	+	throw t;
731		}
732		}
733
734		/**
735	<	* If expression not false, set status to indicate current testcase
736	<	* should fail
735	>	* Just like assertFalse(b), but additionally recording (using
736	>	* threadRecordFailure) any AssertionFailedError thrown, so that
737	>	* the current testcase will fail.
738		*/
739		public void threadAssertFalse(boolean b) {
740	<	if (b) {
250	<	threadFailed = true;
740	>	try {
741		assertFalse(b);
742	+	} catch (AssertionFailedError t) {
743	+	threadRecordFailure(t);
744	+	throw t;
745		}
746		}
747
748		/**
749	<	* If argument not null, set status to indicate current testcase
750	<	* should fail
749	>	* Just like assertNull(x), but additionally recording (using
750	>	* threadRecordFailure) any AssertionFailedError thrown, so that
751	>	* the current testcase will fail.
752		*/
753		public void threadAssertNull(Object x) {
754	<	if (x != null) {
261	<	threadFailed = true;
754	>	try {
755		assertNull(x);
756	+	} catch (AssertionFailedError t) {
757	+	threadRecordFailure(t);
758	+	throw t;
759		}
760		}
761
762		/**
763	<	* If arguments not equal, set status to indicate current testcase
764	<	* should fail
763	>	* Just like assertEquals(x, y), but additionally recording (using
764	>	* threadRecordFailure) any AssertionFailedError thrown, so that
765	>	* the current testcase will fail.
766		*/
767		public void threadAssertEquals(long x, long y) {
768	<	if (x != y) {
272	<	threadFailed = true;
768	>	try {
769		assertEquals(x, y);
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
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(Object x, Object y) {
782	<	if (x != y && (x == null || !x.equals(y))) {
283	<	threadFailed = true;
782	>	try {
783		assertEquals(x, y);
784	+	} catch (AssertionFailedError fail) {
785	+	threadRecordFailure(fail);
786	+	throw fail;
787	+	} catch (Throwable fail) {
788	+	threadUnexpectedException(fail);
789		}
790		}
791
792		/**
793	<	* threadFail with message "should throw exception"
793	>	* Just like assertSame(x, y), but additionally recording (using
794	>	* threadRecordFailure) any AssertionFailedError thrown, so that
795	>	* the current testcase will fail.
796		*/
797	<	public void threadShouldThrow() {
797	>	public void threadAssertSame(Object x, Object y) {
798		try {
799	<	threadFailed = true;
800	<	fail("should throw exception");
801	<	} catch (AssertionFailedError e) {
802	<	e.printStackTrace();
803	<	throw e;
799	>	assertSame(x, y);
800	>	} catch (AssertionFailedError fail) {
801	>	threadRecordFailure(fail);
802	>	throw fail;
803	>	}
804	>	}
805	>
806	>	/**
807	>	* Calls threadFail with message "should throw exception".
808	>	*/
809	>	public void threadShouldThrow() {
810	>	threadFail("should throw exception");
811	>	}
812	>
813	>	/**
814	>	* Calls threadFail with message "should throw" + exceptionName.
815	>	*/
816	>	public void threadShouldThrow(String exceptionName) {
817	>	threadFail("should throw " + exceptionName);
818	>	}
819	>
820	>	/**
821	>	* Records the given exception using {@link #threadRecordFailure},
822	>	* then rethrows the exception, wrapping it in an
823	>	* AssertionFailedError if necessary.
824	>	*/
825	>	public void threadUnexpectedException(Throwable t) {
826	>	threadRecordFailure(t);
827	>	t.printStackTrace();
828	>	if (t instanceof RuntimeException)
829	>	throw (RuntimeException) t;
830	>	else if (t instanceof Error)
831	>	throw (Error) t;
832	>	else {
833	>	AssertionFailedError afe =
834	>	new AssertionFailedError("unexpected exception: " + t);
835	>	afe.initCause(t);
836	>	throw afe;
837		}
838		}
839
840		/**
841	<	* threadFail with message "Unexpected exception"
841	>	* Delays, via Thread.sleep, for the given millisecond delay, but
842	>	* if the sleep is shorter than specified, may re-sleep or yield
843	>	* until time elapses.  Ensures that the given time, as measured
844	>	* by System.nanoTime(), has elapsed.
845	>	*/
846	>	static void delay(long millis) throws InterruptedException {
847	>	long nanos = millis * (1000 * 1000);
848	>	final long wakeupTime = System.nanoTime() + nanos;
849	>	do {
850	>	if (millis > 0L)
851	>	Thread.sleep(millis);
852	>	else // too short to sleep
853	>	Thread.yield();
854	>	nanos = wakeupTime - System.nanoTime();
855	>	millis = nanos / (1000 * 1000);
856	>	} while (nanos >= 0L);
857	>	}
858	>
859	>	/**
860	>	* Allows use of try-with-resources with per-test thread pools.
861		*/
862	<	public void threadUnexpectedException() {
863	<	threadFailed = true;
864	<	fail("Unexpected exception");
862	>	class PoolCleaner implements AutoCloseable {
863	>	private final ExecutorService pool;
864	>	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
865	>	public void close() { joinPool(pool); }
866		}
867
868		/**
869	<	* threadFail with message "Unexpected exception", with argument
869	>	* An extension of PoolCleaner that has an action to release the pool.
870		*/
871	<	public void threadUnexpectedException(Throwable ex) {
872	<	threadFailed = true;
873	<	ex.printStackTrace();
874	<	fail("Unexpected exception: " + ex);
871	>	class PoolCleanerWithReleaser extends PoolCleaner {
872	>	private final Runnable releaser;
873	>	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
874	>	super(pool);
875	>	this.releaser = releaser;
876	>	}
877	>	public void close() {
878	>	try {
879	>	releaser.run();
880	>	} finally {
881	>	super.close();
882	>	}
883	>	}
884	>	}
885	>
886	>	PoolCleaner cleaner(ExecutorService pool) {
887	>	return new PoolCleaner(pool);
888	>	}
889	>
890	>	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
891	>	return new PoolCleanerWithReleaser(pool, releaser);
892	>	}
893	>
894	>	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
895	>	return new PoolCleanerWithReleaser(pool, releaser(latch));
896	>	}
897	>
898	>	Runnable releaser(final CountDownLatch latch) {
899	>	return new Runnable() { public void run() {
900	>	do { latch.countDown(); }
901	>	while (latch.getCount() > 0);
902	>	}};
903	>	}
904	>
905	>	PoolCleaner cleaner(ExecutorService pool, AtomicBoolean flag) {
906	>	return new PoolCleanerWithReleaser(pool, releaser(flag));
907	>	}
908	>
909	>	Runnable releaser(final AtomicBoolean flag) {
910	>	return new Runnable() { public void run() { flag.set(true); }};
911		}
912
913		/**
914	<	* Wait out termination of a thread pool or fail doing so
914	>	* Waits out termination of a thread pool or fails doing so.
915		*/
916	<	public void joinPool(ExecutorService exec) {
916	>	void joinPool(ExecutorService pool) {
917		try {
918	<	exec.shutdown();
919	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
918	>	pool.shutdown();
919	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
920	>	try {
921	>	threadFail("ExecutorService " + pool +
922	>	" did not terminate in a timely manner");
923	>	} finally {
924	>	// last resort, for the benefit of subsequent tests
925	>	pool.shutdownNow();
926	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
927	>	}
928	>	}
929		} catch (SecurityException ok) {
930		// Allowed in case test doesn't have privs
931	<	} catch (InterruptedException ie) {
932	<	fail("Unexpected exception");
931	>	} catch (InterruptedException fail) {
932	>	threadFail("Unexpected InterruptedException");
933		}
934		}
935
936	+	/** Like Runnable, but with the freedom to throw anything */
937	+	interface Action { public void run() throws Throwable; }
938
939		/**
940	<	* fail with message "should throw exception"
940	>	* Runs all the given actions in parallel, failing if any fail.
941	>	* Useful for running multiple variants of tests that are
942	>	* necessarily individually slow because they must block.
943		*/
944	<	public void shouldThrow() {
945	<	fail("Should throw exception");
944	>	void testInParallel(Action ... actions) {
945	>	ExecutorService pool = Executors.newCachedThreadPool();
946	>	try (PoolCleaner cleaner = cleaner(pool)) {
947	>	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
948	>	for (final Action action : actions)
949	>	futures.add(pool.submit(new CheckedRunnable() {
950	>	public void realRun() throws Throwable { action.run();}}));
951	>	for (Future<?> future : futures)
952	>	try {
953	>	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
954	>	} catch (ExecutionException ex) {
955	>	threadUnexpectedException(ex.getCause());
956	>	} catch (Exception ex) {
957	>	threadUnexpectedException(ex);
958	>	}
959	>	}
960	>	}
961	>
962	>	/**
963	>	* A debugging tool to print stack traces of most threads, as jstack does.
964	>	* Uninteresting threads are filtered out.
965	>	*/
966	>	static void dumpTestThreads() {
967	>	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
968	>	System.err.println("------ stacktrace dump start ------");
969	>	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
970	>	String name = info.getThreadName();
971	>	if ("Signal Dispatcher".equals(name))
972	>	continue;
973	>	if ("Reference Handler".equals(name)
974	>	&& info.getLockName().startsWith("java.lang.ref.Reference$Lock"))
975	>	continue;
976	>	if ("Finalizer".equals(name)
977	>	&& info.getLockName().startsWith("java.lang.ref.ReferenceQueue$Lock"))
978	>	continue;
979	>	if ("checkForWedgedTest".equals(name))
980	>	continue;
981	>	System.err.print(info);
982	>	}
983	>	System.err.println("------ stacktrace dump end ------");
984	>	}
985	>
986	>	/**
987	>	* Checks that thread does not terminate within the default
988	>	* millisecond delay of {@code timeoutMillis()}.
989	>	*/
990	>	void assertThreadStaysAlive(Thread thread) {
991	>	assertThreadStaysAlive(thread, timeoutMillis());
992	>	}
993	>
994	>	/**
995	>	* Checks that thread does not terminate within the given millisecond delay.
996	>	*/
997	>	void assertThreadStaysAlive(Thread thread, long millis) {
998	>	try {
999	>	// No need to optimize the failing case via Thread.join.
1000	>	delay(millis);
1001	>	assertTrue(thread.isAlive());
1002	>	} catch (InterruptedException fail) {
1003	>	threadFail("Unexpected InterruptedException");
1004	>	}
1005	>	}
1006	>
1007	>	/**
1008	>	* Checks that the threads do not terminate within the default
1009	>	* millisecond delay of {@code timeoutMillis()}.
1010	>	*/
1011	>	void assertThreadsStayAlive(Thread... threads) {
1012	>	assertThreadsStayAlive(timeoutMillis(), threads);
1013	>	}
1014	>
1015	>	/**
1016	>	* Checks that the threads do not terminate within the given millisecond delay.
1017	>	*/
1018	>	void assertThreadsStayAlive(long millis, Thread... threads) {
1019	>	try {
1020	>	// No need to optimize the failing case via Thread.join.
1021	>	delay(millis);
1022	>	for (Thread thread : threads)
1023	>	assertTrue(thread.isAlive());
1024	>	} catch (InterruptedException fail) {
1025	>	threadFail("Unexpected InterruptedException");
1026	>	}
1027		}
1028
1029		/**
1030	<	* fail with message "Unexpected exception"
1030	>	* Checks that future.get times out, with the default timeout of
1031	>	* {@code timeoutMillis()}.
1032		*/
1033	<	public void unexpectedException() {
1034	<	fail("Unexpected exception");
1033	>	void assertFutureTimesOut(Future future) {
1034	>	assertFutureTimesOut(future, timeoutMillis());
1035		}
1036
1037		/**
1038	<	* fail with message "Unexpected exception", with argument
1038	>	* Checks that future.get times out, with the given millisecond timeout.
1039		*/
1040	<	public void unexpectedException(Throwable ex) {
1041	<	ex.printStackTrace();
1042	<	fail("Unexpected exception: " + ex);
1040	>	void assertFutureTimesOut(Future future, long timeoutMillis) {
1041	>	long startTime = System.nanoTime();
1042	>	try {
1043	>	future.get(timeoutMillis, MILLISECONDS);
1044	>	shouldThrow();
1045	>	} catch (TimeoutException success) {
1046	>	} catch (Exception fail) {
1047	>	threadUnexpectedException(fail);
1048	>	} finally { future.cancel(true); }
1049	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
1050		}
1051
1052	+	/**
1053	+	* Fails with message "should throw exception".
1054	+	*/
1055	+	public void shouldThrow() {
1056	+	fail("Should throw exception");
1057	+	}
1058	+
1059	+	/**
1060	+	* Fails with message "should throw " + exceptionName.
1061	+	*/
1062	+	public void shouldThrow(String exceptionName) {
1063	+	fail("Should throw " + exceptionName);
1064	+	}
1065
1066		/**
1067		* The number of elements to place in collections, arrays, etc.
1068		*/
1069	<	static final int SIZE = 20;
1069	>	public static final int SIZE = 20;
1070
1071		// Some convenient Integer constants
1072
1073	<	static final Integer zero = new Integer(0);
1074	<	static final Integer one = new Integer(1);
1075	<	static final Integer two = new Integer(2);
1076	<	static final Integer three  = new Integer(3);
1077	<	static final Integer four  = new Integer(4);
1078	<	static final Integer five  = new Integer(5);
1079	<	static final Integer six = new Integer(6);
1080	<	static final Integer seven = new Integer(7);
1081	<	static final Integer eight = new Integer(8);
1082	<	static final Integer nine = new Integer(9);
1083	<	static final Integer m1  = new Integer(-1);
1084	<	static final Integer m2  = new Integer(-2);
1085	<	static final Integer m3  = new Integer(-3);
1086	<	static final Integer m4 = new Integer(-4);
1087	<	static final Integer m5 = new Integer(-5);
1088	<	static final Integer m6 = new Integer(-6);
1089	<	static final Integer m10 = new Integer(-10);
1073	>	public static final Integer zero  = new Integer(0);
1074	>	public static final Integer one   = new Integer(1);
1075	>	public static final Integer two   = new Integer(2);
1076	>	public static final Integer three = new Integer(3);
1077	>	public static final Integer four  = new Integer(4);
1078	>	public static final Integer five  = new Integer(5);
1079	>	public static final Integer six   = new Integer(6);
1080	>	public static final Integer seven = new Integer(7);
1081	>	public static final Integer eight = new Integer(8);
1082	>	public static final Integer nine  = new Integer(9);
1083	>	public static final Integer m1  = new Integer(-1);
1084	>	public static final Integer m2  = new Integer(-2);
1085	>	public static final Integer m3  = new Integer(-3);
1086	>	public static final Integer m4  = new Integer(-4);
1087	>	public static final Integer m5  = new Integer(-5);
1088	>	public static final Integer m6  = new Integer(-6);
1089	>	public static final Integer m10 = new Integer(-10);
1090	>
1091	>	/**
1092	>	* Runs Runnable r with a security policy that permits precisely
1093	>	* the specified permissions.  If there is no current security
1094	>	* manager, the runnable is run twice, both with and without a
1095	>	* security manager.  We require that any security manager permit
1096	>	* getPolicy/setPolicy.
1097	>	*/
1098	>	public void runWithPermissions(Runnable r, Permission... permissions) {
1099	>	SecurityManager sm = System.getSecurityManager();
1100	>	if (sm == null) {
1101	>	r.run();
1102	>	}
1103	>	runWithSecurityManagerWithPermissions(r, permissions);
1104	>	}
1105	>
1106	>	/**
1107	>	* Runs Runnable r with a security policy that permits precisely
1108	>	* the specified permissions.  If there is no current security
1109	>	* manager, a temporary one is set for the duration of the
1110	>	* Runnable.  We require that any security manager permit
1111	>	* getPolicy/setPolicy.
1112	>	*/
1113	>	public void runWithSecurityManagerWithPermissions(Runnable r,
1114	>	Permission... permissions) {
1115	>	SecurityManager sm = System.getSecurityManager();
1116	>	if (sm == null) {
1117	>	Policy savedPolicy = Policy.getPolicy();
1118	>	try {
1119	>	Policy.setPolicy(permissivePolicy());
1120	>	System.setSecurityManager(new SecurityManager());
1121	>	runWithSecurityManagerWithPermissions(r, permissions);
1122	>	} finally {
1123	>	System.setSecurityManager(null);
1124	>	Policy.setPolicy(savedPolicy);
1125	>	}
1126	>	} else {
1127	>	Policy savedPolicy = Policy.getPolicy();
1128	>	AdjustablePolicy policy = new AdjustablePolicy(permissions);
1129	>	Policy.setPolicy(policy);
1130
1131	+	try {
1132	+	r.run();
1133	+	} finally {
1134	+	policy.addPermission(new SecurityPermission("setPolicy"));
1135	+	Policy.setPolicy(savedPolicy);
1136	+	}
1137	+	}
1138	+	}
1139	+
1140	+	/**
1141	+	* Runs a runnable without any permissions.
1142	+	*/
1143	+	public void runWithoutPermissions(Runnable r) {
1144	+	runWithPermissions(r);
1145	+	}
1146
1147		/**
1148		* A security policy where new permissions can be dynamically added
1149		* or all cleared.
1150		*/
1151	<	static class AdjustablePolicy extends java.security.Policy {
1151	>	public static class AdjustablePolicy extends java.security.Policy {
1152		Permissions perms = new Permissions();
1153	<	AdjustablePolicy() { }
1153	>	AdjustablePolicy(Permission... permissions) {
1154	>	for (Permission permission : permissions)
1155	>	perms.add(permission);
1156	>	}
1157		void addPermission(Permission perm) { perms.add(perm); }
1158		void clearPermissions() { perms = new Permissions(); }
1159	<	public PermissionCollection getPermissions(CodeSource cs) {
1160	<	return perms;
1161	<	}
1162	<	public PermissionCollection getPermissions(ProtectionDomain pd) {
1163	<	return perms;
1164	<	}
1165	<	public boolean implies(ProtectionDomain pd, Permission p) {
1166	<	return perms.implies(p);
1167	<	}
1168	<	public void refresh() {}
1159	>	public PermissionCollection getPermissions(CodeSource cs) {
1160	>	return perms;
1161	>	}
1162	>	public PermissionCollection getPermissions(ProtectionDomain pd) {
1163	>	return perms;
1164	>	}
1165	>	public boolean implies(ProtectionDomain pd, Permission p) {
1166	>	return perms.implies(p);
1167	>	}
1168	>	public void refresh() {}
1169	>	public String toString() {
1170	>	List<Permission> ps = new ArrayList<Permission>();
1171	>	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1172	>	ps.add(e.nextElement());
1173	>	return "AdjustablePolicy with permissions " + ps;
1174	>	}
1175		}
1176
1177	+	/**
1178	+	* Returns a policy containing all the permissions we ever need.
1179	+	*/
1180	+	public static Policy permissivePolicy() {
1181	+	return new AdjustablePolicy
1182	+	// Permissions j.u.c. needs directly
1183	+	(new RuntimePermission("modifyThread"),
1184	+	new RuntimePermission("getClassLoader"),
1185	+	new RuntimePermission("setContextClassLoader"),
1186	+	// Permissions needed to change permissions!
1187	+	new SecurityPermission("getPolicy"),
1188	+	new SecurityPermission("setPolicy"),
1189	+	new RuntimePermission("setSecurityManager"),
1190	+	// Permissions needed by the junit test harness
1191	+	new RuntimePermission("accessDeclaredMembers"),
1192	+	new PropertyPermission("*", "read"),
1193	+	new java.io.FilePermission("<<ALL FILES>>", "read"));
1194	+	}
1195	+
1196	+	/**
1197	+	* Sleeps until the given time has elapsed.
1198	+	* Throws AssertionFailedError if interrupted.
1199	+	*/
1200	+	void sleep(long millis) {
1201	+	try {
1202	+	delay(millis);
1203	+	} catch (InterruptedException fail) {
1204	+	AssertionFailedError afe =
1205	+	new AssertionFailedError("Unexpected InterruptedException");
1206	+	afe.initCause(fail);
1207	+	throw afe;
1208	+	}
1209	+	}
1210	+
1211	+	/**
1212	+	* Spin-waits up to the specified number of milliseconds for the given
1213	+	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1214	+	*/
1215	+	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1216	+	long startTime = System.nanoTime();
1217	+	for (;;) {
1218	+	Thread.State s = thread.getState();
1219	+	if (s == Thread.State.BLOCKED ||
1220	+	s == Thread.State.WAITING ||
1221	+	s == Thread.State.TIMED_WAITING)
1222	+	return;
1223	+	else if (s == Thread.State.TERMINATED)
1224	+	fail("Unexpected thread termination");
1225	+	else if (millisElapsedSince(startTime) > timeoutMillis) {
1226	+	threadAssertTrue(thread.isAlive());
1227	+	return;
1228	+	}
1229	+	Thread.yield();
1230	+	}
1231	+	}
1232	+
1233	+	/**
1234	+	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
1235	+	* state: BLOCKED, WAITING, or TIMED_WAITING.
1236	+	*/
1237	+	void waitForThreadToEnterWaitState(Thread thread) {
1238	+	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
1239	+	}
1240	+
1241	+	/**
1242	+	* Returns the number of milliseconds since time given by
1243	+	* startNanoTime, which must have been previously returned from a
1244	+	* call to {@link System#nanoTime()}.
1245	+	*/
1246	+	static long millisElapsedSince(long startNanoTime) {
1247	+	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1248	+	}
1249	+
1250	+	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1251	+	//         long startTime = System.nanoTime();
1252	+	//         try {
1253	+	//             r.run();
1254	+	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1255	+	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1256	+	//             throw new AssertionFailedError("did not return promptly");
1257	+	//     }
1258	+
1259	+	//     void assertTerminatesPromptly(Runnable r) {
1260	+	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1261	+	//     }
1262	+
1263	+	/**
1264	+	* Checks that timed f.get() returns the expected value, and does not
1265	+	* wait for the timeout to elapse before returning.
1266	+	*/
1267	+	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1268	+	long startTime = System.nanoTime();
1269	+	try {
1270	+	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1271	+	} catch (Throwable fail) { threadUnexpectedException(fail); }
1272	+	if (millisElapsedSince(startTime) > timeoutMillis/2)
1273	+	throw new AssertionFailedError("timed get did not return promptly");
1274	+	}
1275	+
1276	+	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1277	+	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1278	+	}
1279	+
1280	+	/**
1281	+	* Returns a new started daemon Thread running the given runnable.
1282	+	*/
1283	+	Thread newStartedThread(Runnable runnable) {
1284	+	Thread t = new Thread(runnable);
1285	+	t.setDaemon(true);
1286	+	t.start();
1287	+	return t;
1288	+	}
1289	+
1290	+	/**
1291	+	* Waits for the specified time (in milliseconds) for the thread
1292	+	* to terminate (using {@link Thread#join(long)}), else interrupts
1293	+	* the thread (in the hope that it may terminate later) and fails.
1294	+	*/
1295	+	void awaitTermination(Thread t, long timeoutMillis) {
1296	+	try {
1297	+	t.join(timeoutMillis);
1298	+	} catch (InterruptedException fail) {
1299	+	threadUnexpectedException(fail);
1300	+	} finally {
1301	+	if (t.getState() != Thread.State.TERMINATED) {
1302	+	t.interrupt();
1303	+	threadFail("timed out waiting for thread to terminate");
1304	+	}
1305	+	}
1306	+	}
1307	+
1308	+	/**
1309	+	* Waits for LONG_DELAY_MS milliseconds for the thread to
1310	+	* terminate (using {@link Thread#join(long)}), else interrupts
1311	+	* the thread (in the hope that it may terminate later) and fails.
1312	+	*/
1313	+	void awaitTermination(Thread t) {
1314	+	awaitTermination(t, LONG_DELAY_MS);
1315	+	}
1316
1317		// Some convenient Runnable classes
1318
1319	<	abstract class CheckedRunnable implements Runnable {
1320	<	abstract void realRun() throws Throwable;
1319	>	public abstract class CheckedRunnable implements Runnable {
1320	>	protected abstract void realRun() throws Throwable;
1321	>
1322	>	public final void run() {
1323	>	try {
1324	>	realRun();
1325	>	} catch (Throwable fail) {
1326	>	threadUnexpectedException(fail);
1327	>	}
1328	>	}
1329	>	}
1330	>
1331	>	public abstract class RunnableShouldThrow implements Runnable {
1332	>	protected abstract void realRun() throws Throwable;
1333	>
1334	>	final Class<?> exceptionClass;
1335	>
1336	>	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
1337	>	this.exceptionClass = exceptionClass;
1338	>	}
1339	>
1340	>	public final void run() {
1341	>	try {
1342	>	realRun();
1343	>	threadShouldThrow(exceptionClass.getSimpleName());
1344	>	} catch (Throwable t) {
1345	>	if (! exceptionClass.isInstance(t))
1346	>	threadUnexpectedException(t);
1347	>	}
1348	>	}
1349	>	}
1350	>
1351	>	public abstract class ThreadShouldThrow extends Thread {
1352	>	protected abstract void realRun() throws Throwable;
1353	>
1354	>	final Class<?> exceptionClass;
1355	>
1356	>	<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) {
1357	>	this.exceptionClass = exceptionClass;
1358	>	}
1359
1360		public final void run() {
1361		try {
1362		realRun();
1363	+	threadShouldThrow(exceptionClass.getSimpleName());
1364		} catch (Throwable t) {
1365	<	threadUnexpectedException(t);
1365	>	if (! exceptionClass.isInstance(t))
1366	>	threadUnexpectedException(t);
1367		}
1368		}
1369		}
1370
1371	<	abstract class CheckedInterruptedRunnable implements Runnable {
1372	<	abstract void realRun() throws Throwable;
1371	>	public abstract class CheckedInterruptedRunnable implements Runnable {
1372	>	protected abstract void realRun() throws Throwable;
1373
1374		public final void run() {
1375		try {
1376		realRun();
1377	<	threadShouldThrow();
1377	>	threadShouldThrow("InterruptedException");
1378		} catch (InterruptedException success) {
1379	<	} catch (Throwable t) {
1380	<	threadUnexpectedException(t);
1379	>	threadAssertFalse(Thread.interrupted());
1380	>	} catch (Throwable fail) {
1381	>	threadUnexpectedException(fail);
1382		}
1383		}
1384		}
1385
1386	<	abstract class CheckedCallable<T> implements Callable<T> {
1387	<	abstract T realCall() throws Throwable;
1386	>	public abstract class CheckedCallable<T> implements Callable<T> {
1387	>	protected abstract T realCall() throws Throwable;
1388
1389		public final T call() {
1390		try {
1391		return realCall();
1392	<	} catch (Throwable t) {
1393	<	threadUnexpectedException(t);
1392	>	} catch (Throwable fail) {
1393	>	threadUnexpectedException(fail);
1394		return null;
1395		}
1396		}
1397		}
1398
1399	<	static class NoOpRunnable implements Runnable {
1399	>	public abstract class CheckedInterruptedCallable<T>
1400	>	implements Callable<T> {
1401	>	protected abstract T realCall() throws Throwable;
1402	>
1403	>	public final T call() {
1404	>	try {
1405	>	T result = realCall();
1406	>	threadShouldThrow("InterruptedException");
1407	>	return result;
1408	>	} catch (InterruptedException success) {
1409	>	threadAssertFalse(Thread.interrupted());
1410	>	} catch (Throwable fail) {
1411	>	threadUnexpectedException(fail);
1412	>	}
1413	>	return null;
1414	>	}
1415	>	}
1416	>
1417	>	public static class NoOpRunnable implements Runnable {
1418		public void run() {}
1419		}
1420
1421	<	static class NoOpCallable implements Callable {
1421	>	public static class NoOpCallable implements Callable {
1422		public Object call() { return Boolean.TRUE; }
1423		}
1424
1425	<	static final String TEST_STRING = "a test string";
1425	>	public static final String TEST_STRING = "a test string";
1426
1427	<	static class StringTask implements Callable<String> {
1428	<	public String call() { return TEST_STRING; }
1427	>	public static class StringTask implements Callable<String> {
1428	>	final String value;
1429	>	public StringTask() { this(TEST_STRING); }
1430	>	public StringTask(String value) { this.value = value; }
1431	>	public String call() { return value; }
1432		}
1433
1434	<	static class NPETask implements Callable<String> {
1434	>	public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1435	>	return new CheckedCallable<String>() {
1436	>	protected String realCall() {
1437	>	try {
1438	>	latch.await();
1439	>	} catch (InterruptedException quittingTime) {}
1440	>	return TEST_STRING;
1441	>	}};
1442	>	}
1443	>
1444	>	public Runnable countDowner(final CountDownLatch latch) {
1445	>	return new CheckedRunnable() {
1446	>	public void realRun() throws InterruptedException {
1447	>	latch.countDown();
1448	>	}};
1449	>	}
1450	>
1451	>	class LatchAwaiter extends CheckedRunnable {
1452	>	static final int NEW = 0;
1453	>	static final int RUNNING = 1;
1454	>	static final int DONE = 2;
1455	>	final CountDownLatch latch;
1456	>	int state = NEW;
1457	>	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1458	>	public void realRun() throws InterruptedException {
1459	>	state = 1;
1460	>	await(latch);
1461	>	state = 2;
1462	>	}
1463	>	}
1464	>
1465	>	public LatchAwaiter awaiter(CountDownLatch latch) {
1466	>	return new LatchAwaiter(latch);
1467	>	}
1468	>
1469	>	public void await(CountDownLatch latch) {
1470	>	try {
1471	>	if (!latch.await(LONG_DELAY_MS, MILLISECONDS))
1472	>	fail("timed out waiting for CountDownLatch for "
1473	>	+ (LONG_DELAY_MS/1000) + " sec");
1474	>	} catch (Throwable fail) {
1475	>	threadUnexpectedException(fail);
1476	>	}
1477	>	}
1478	>
1479	>	public void await(Semaphore semaphore) {
1480	>	try {
1481	>	if (!semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS))
1482	>	fail("timed out waiting for Semaphore for "
1483	>	+ (LONG_DELAY_MS/1000) + " sec");
1484	>	} catch (Throwable fail) {
1485	>	threadUnexpectedException(fail);
1486	>	}
1487	>	}
1488	>
1489	>	//     /**
1490	>	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1491	>	//      */
1492	>	//     public void await(AtomicBoolean flag) {
1493	>	//         await(flag, LONG_DELAY_MS);
1494	>	//     }
1495	>
1496	>	//     /**
1497	>	//      * Spin-waits up to the specified timeout until flag becomes true.
1498	>	//      */
1499	>	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1500	>	//         long startTime = System.nanoTime();
1501	>	//         while (!flag.get()) {
1502	>	//             if (millisElapsedSince(startTime) > timeoutMillis)
1503	>	//                 throw new AssertionFailedError("timed out");
1504	>	//             Thread.yield();
1505	>	//         }
1506	>	//     }
1507	>
1508	>	public static class NPETask implements Callable<String> {
1509		public String call() { throw new NullPointerException(); }
1510		}
1511
1512	<	static class CallableOne implements Callable<Integer> {
1512	>	public static class CallableOne implements Callable<Integer> {
1513		public Integer call() { return one; }
1514		}
1515
1516	<	class ShortRunnable extends CheckedRunnable {
1517	<	void realRun() throws Throwable {
1518	<	Thread.sleep(SHORT_DELAY_MS);
1516	>	public class ShortRunnable extends CheckedRunnable {
1517	>	protected void realRun() throws Throwable {
1518	>	delay(SHORT_DELAY_MS);
1519		}
1520		}
1521
1522	<	class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1523	<	void realRun() throws InterruptedException {
1524	<	Thread.sleep(SHORT_DELAY_MS);
1522	>	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1523	>	protected void realRun() throws InterruptedException {
1524	>	delay(SHORT_DELAY_MS);
1525		}
1526		}
1527
1528	<	class SmallRunnable extends CheckedRunnable {
1529	<	void realRun() throws Throwable {
1530	<	Thread.sleep(SMALL_DELAY_MS);
1528	>	public class SmallRunnable extends CheckedRunnable {
1529	>	protected void realRun() throws Throwable {
1530	>	delay(SMALL_DELAY_MS);
1531		}
1532		}
1533
1534	<	class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1535	<	void realRun() {
1534	>	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1535	>	protected void realRun() {
1536		try {
1537	<	Thread.sleep(SMALL_DELAY_MS);
1538	<	}
490	<	catch (InterruptedException ok) {
491	<	}
1537	>	delay(SMALL_DELAY_MS);
1538	>	} catch (InterruptedException ok) {}
1539		}
1540		}
1541
1542	<	class SmallCallable extends CheckedCallable {
1543	<	Object realCall() throws Throwable {
1544	<	Thread.sleep(SMALL_DELAY_MS);
1542	>	public class SmallCallable extends CheckedCallable {
1543	>	protected Object realCall() throws InterruptedException {
1544	>	delay(SMALL_DELAY_MS);
1545		return Boolean.TRUE;
1546		}
1547		}
1548
1549	<	class SmallInterruptedRunnable extends CheckedInterruptedRunnable {
1550	<	void realRun() throws InterruptedException {
1551	<	Thread.sleep(SMALL_DELAY_MS);
1549	>	public class MediumRunnable extends CheckedRunnable {
1550	>	protected void realRun() throws Throwable {
1551	>	delay(MEDIUM_DELAY_MS);
1552		}
1553		}
1554
1555	<	class MediumRunnable extends CheckedRunnable {
1556	<	void realRun() throws Throwable {
1557	<	Thread.sleep(MEDIUM_DELAY_MS);
1555	>	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1556	>	protected void realRun() throws InterruptedException {
1557	>	delay(MEDIUM_DELAY_MS);
1558		}
1559		}
1560
1561	<	class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1562	<	void realRun() throws InterruptedException {
1563	<	Thread.sleep(MEDIUM_DELAY_MS);
1564	<	}
1561	>	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1562	>	return new CheckedRunnable() {
1563	>	protected void realRun() {
1564	>	try {
1565	>	delay(timeoutMillis);
1566	>	} catch (InterruptedException ok) {}
1567	>	}};
1568		}
1569
1570	<	class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1571	<	void realRun() {
1570	>	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1571	>	protected void realRun() {
1572		try {
1573	<	Thread.sleep(MEDIUM_DELAY_MS);
1574	<	}
525	<	catch (InterruptedException ok) {
526	<	}
1573	>	delay(MEDIUM_DELAY_MS);
1574	>	} catch (InterruptedException ok) {}
1575		}
1576		}
1577
1578	<	class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1579	<	void realRun() {
1578	>	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1579	>	protected void realRun() {
1580		try {
1581	<	Thread.sleep(LONG_DELAY_MS);
1582	<	}
535	<	catch (InterruptedException ok) {
536	<	}
1581	>	delay(LONG_DELAY_MS);
1582	>	} catch (InterruptedException ok) {}
1583		}
1584		}
1585
1586		/**
1587		* For use as ThreadFactory in constructors
1588		*/
1589	<	static class SimpleThreadFactory implements ThreadFactory {
1589	>	public static class SimpleThreadFactory implements ThreadFactory {
1590		public Thread newThread(Runnable r) {
1591		return new Thread(r);
1592		}
1593		}
1594
1595	<	static class TrackedShortRunnable implements Runnable {
1596	<	volatile boolean done = false;
1595	>	public interface TrackedRunnable extends Runnable {
1596	>	boolean isDone();
1597	>	}
1598	>
1599	>	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1600	>	return new TrackedRunnable() {
1601	>	private volatile boolean done = false;
1602	>	public boolean isDone() { return done; }
1603	>	public void run() {
1604	>	try {
1605	>	delay(timeoutMillis);
1606	>	done = true;
1607	>	} catch (InterruptedException ok) {}
1608	>	}
1609	>	};
1610	>	}
1611	>
1612	>	public static class TrackedShortRunnable implements Runnable {
1613	>	public volatile boolean done = false;
1614		public void run() {
1615		try {
1616	<	Thread.sleep(SMALL_DELAY_MS);
1616	>	delay(SHORT_DELAY_MS);
1617		done = true;
1618	<	} catch (Exception e) {
556	<	}
1618	>	} catch (InterruptedException ok) {}
1619		}
1620		}
1621
1622	<	static class TrackedMediumRunnable implements Runnable {
1623	<	volatile boolean done = false;
1622	>	public static class TrackedSmallRunnable implements Runnable {
1623	>	public volatile boolean done = false;
1624		public void run() {
1625		try {
1626	<	Thread.sleep(MEDIUM_DELAY_MS);
1626	>	delay(SMALL_DELAY_MS);
1627		done = true;
1628	<	} catch (Exception e) {
567	<	}
1628	>	} catch (InterruptedException ok) {}
1629		}
1630		}
1631
1632	<	static class TrackedLongRunnable implements Runnable {
1633	<	volatile boolean done = false;
1632	>	public static class TrackedMediumRunnable implements Runnable {
1633	>	public volatile boolean done = false;
1634		public void run() {
1635		try {
1636	<	Thread.sleep(LONG_DELAY_MS);
1636	>	delay(MEDIUM_DELAY_MS);
1637		done = true;
1638	<	} catch (Exception e) {
1639	<	}
1638	>	} catch (InterruptedException ok) {}
1639	>	}
1640	>	}
1641	>
1642	>	public static class TrackedLongRunnable implements Runnable {
1643	>	public volatile boolean done = false;
1644	>	public void run() {
1645	>	try {
1646	>	delay(LONG_DELAY_MS);
1647	>	done = true;
1648	>	} catch (InterruptedException ok) {}
1649		}
1650		}
1651
1652	<	static class TrackedNoOpRunnable implements Runnable {
1653	<	volatile boolean done = false;
1652	>	public static class TrackedNoOpRunnable implements Runnable {
1653	>	public volatile boolean done = false;
1654		public void run() {
1655		done = true;
1656		}
1657		}
1658
1659	<	static class TrackedCallable implements Callable {
1660	<	volatile boolean done = false;
1659	>	public static class TrackedCallable implements Callable {
1660	>	public volatile boolean done = false;
1661		public Object call() {
1662		try {
1663	<	Thread.sleep(SMALL_DELAY_MS);
1663	>	delay(SMALL_DELAY_MS);
1664		done = true;
1665	<	} catch (Exception e) {
596	<	}
1665	>	} catch (InterruptedException ok) {}
1666		return Boolean.TRUE;
1667		}
1668		}
1669
1670	+	/**
1671	+	* Analog of CheckedRunnable for RecursiveAction
1672	+	*/
1673	+	public abstract class CheckedRecursiveAction extends RecursiveAction {
1674	+	protected abstract void realCompute() throws Throwable;
1675	+
1676	+	@Override protected final void compute() {
1677	+	try {
1678	+	realCompute();
1679	+	} catch (Throwable fail) {
1680	+	threadUnexpectedException(fail);
1681	+	}
1682	+	}
1683	+	}
1684	+
1685	+	/**
1686	+	* Analog of CheckedCallable for RecursiveTask
1687	+	*/
1688	+	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1689	+	protected abstract T realCompute() throws Throwable;
1690	+
1691	+	@Override protected final T compute() {
1692	+	try {
1693	+	return realCompute();
1694	+	} catch (Throwable fail) {
1695	+	threadUnexpectedException(fail);
1696	+	return null;
1697	+	}
1698	+	}
1699	+	}
1700
1701		/**
1702		* For use as RejectedExecutionHandler in constructors
1703		*/
1704	<	static class NoOpREHandler implements RejectedExecutionHandler {
1704	>	public static class NoOpREHandler implements RejectedExecutionHandler {
1705		public void rejectedExecution(Runnable r,
1706		ThreadPoolExecutor executor) {}
1707		}
1708
1709	+	/**
1710	+	* A CyclicBarrier that uses timed await and fails with
1711	+	* AssertionFailedErrors instead of throwing checked exceptions.
1712	+	*/
1713	+	public class CheckedBarrier extends CyclicBarrier {
1714	+	public CheckedBarrier(int parties) { super(parties); }
1715	+
1716	+	public int await() {
1717	+	try {
1718	+	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1719	+	} catch (TimeoutException timedOut) {
1720	+	throw new AssertionFailedError("timed out");
1721	+	} catch (Exception fail) {
1722	+	AssertionFailedError afe =
1723	+	new AssertionFailedError("Unexpected exception: " + fail);
1724	+	afe.initCause(fail);
1725	+	throw afe;
1726	+	}
1727	+	}
1728	+	}
1729	+
1730	+	void checkEmpty(BlockingQueue q) {
1731	+	try {
1732	+	assertTrue(q.isEmpty());
1733	+	assertEquals(0, q.size());
1734	+	assertNull(q.peek());
1735	+	assertNull(q.poll());
1736	+	assertNull(q.poll(0, MILLISECONDS));
1737	+	assertEquals(q.toString(), "[]");
1738	+	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1739	+	assertFalse(q.iterator().hasNext());
1740	+	try {
1741	+	q.element();
1742	+	shouldThrow();
1743	+	} catch (NoSuchElementException success) {}
1744	+	try {
1745	+	q.iterator().next();
1746	+	shouldThrow();
1747	+	} catch (NoSuchElementException success) {}
1748	+	try {
1749	+	q.remove();
1750	+	shouldThrow();
1751	+	} catch (NoSuchElementException success) {}
1752	+	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1753	+	}
1754	+
1755	+	void assertSerialEquals(Object x, Object y) {
1756	+	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1757	+	}
1758	+
1759	+	void assertNotSerialEquals(Object x, Object y) {
1760	+	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1761	+	}
1762	+
1763	+	byte[] serialBytes(Object o) {
1764	+	try {
1765	+	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1766	+	ObjectOutputStream oos = new ObjectOutputStream(bos);
1767	+	oos.writeObject(o);
1768	+	oos.flush();
1769	+	oos.close();
1770	+	return bos.toByteArray();
1771	+	} catch (Throwable fail) {
1772	+	threadUnexpectedException(fail);
1773	+	return new byte[0];
1774	+	}
1775	+	}
1776	+
1777	+	@SuppressWarnings("unchecked")
1778	+	<T> T serialClone(T o) {
1779	+	try {
1780	+	ObjectInputStream ois = new ObjectInputStream
1781	+	(new ByteArrayInputStream(serialBytes(o)));
1782	+	T clone = (T) ois.readObject();
1783	+	assertSame(o.getClass(), clone.getClass());
1784	+	return clone;
1785	+	} catch (Throwable fail) {
1786	+	threadUnexpectedException(fail);
1787	+	return null;
1788	+	}
1789	+	}
1790	+
1791	+	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1792	+	Runnable... throwingActions) {
1793	+	for (Runnable throwingAction : throwingActions) {
1794	+	boolean threw = false;
1795	+	try { throwingAction.run(); }
1796	+	catch (Throwable t) {
1797	+	threw = true;
1798	+	if (!expectedExceptionClass.isInstance(t)) {
1799	+	AssertionFailedError afe =
1800	+	new AssertionFailedError
1801	+	("Expected " + expectedExceptionClass.getName() +
1802	+	", got " + t.getClass().getName());
1803	+	afe.initCause(t);
1804	+	threadUnexpectedException(afe);
1805	+	}
1806	+	}
1807	+	if (!threw)
1808	+	shouldThrow(expectedExceptionClass.getName());
1809	+	}
1810	+	}
1811	+
1812	+	public void assertIteratorExhausted(Iterator<?> it) {
1813	+	try {
1814	+	it.next();
1815	+	shouldThrow();
1816	+	} catch (NoSuchElementException success) {}
1817	+	assertFalse(it.hasNext());
1818	+	}
1819		}

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