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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.37 by dl, Tue Aug 4 00:23:18 2009 UTC vs.
Revision 1.224 by jsr166, Sat May 13 21:43:50 2017 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
2	>	* Written by Doug Lea and Martin Buchholz with assistance from
3	>	* members of JCP JSR-166 Expert Group and released to the public
4	>	* domain, as explained at
5	>	* http://creativecommons.org/publicdomain/zero/1.0/
6		* Other contributors include Andrew Wright, Jeffrey Hayes,
7		* Pat Fisher, Mike Judd.
8		*/
9
10	<	import junit.framework.*;
11	<	import java.util.*;
12	<	import java.util.concurrent.*;
10	>	/*
11	>	* @test
12	>	* @summary JSR-166 tck tests, in a number of variations.
13	>	*          The first is the conformance testing variant,
14	>	*          while others also test implementation details.
15	>	* @build *
16	>	* @modules java.management
17	>	* @run junit/othervm/timeout=1000 JSR166TestCase
18	>	* @run junit/othervm/timeout=1000
19	>	*      --add-opens java.base/java.util.concurrent=ALL-UNNAMED
20	>	*      --add-opens java.base/java.lang=ALL-UNNAMED
21	>	*      -Djsr166.testImplementationDetails=true
22	>	*      JSR166TestCase
23	>	* @run junit/othervm/timeout=1000
24	>	*      --add-opens java.base/java.util.concurrent=ALL-UNNAMED
25	>	*      --add-opens java.base/java.lang=ALL-UNNAMED
26	>	*      -Djsr166.testImplementationDetails=true
27	>	*      -Djava.util.concurrent.ForkJoinPool.common.parallelism=0
28	>	*      JSR166TestCase
29	>	* @run junit/othervm/timeout=1000
30	>	*      --add-opens java.base/java.util.concurrent=ALL-UNNAMED
31	>	*      --add-opens java.base/java.lang=ALL-UNNAMED
32	>	*      -Djsr166.testImplementationDetails=true
33	>	*      -Djava.util.concurrent.ForkJoinPool.common.parallelism=1
34	>	*      -Djava.util.secureRandomSeed=true
35	>	*      JSR166TestCase
36	>	* @run junit/othervm/timeout=1000/policy=tck.policy
37	>	*      --add-opens java.base/java.util.concurrent=ALL-UNNAMED
38	>	*      --add-opens java.base/java.lang=ALL-UNNAMED
39	>	*      -Djsr166.testImplementationDetails=true
40	>	*      JSR166TestCase
41	>	*/
42	>
43		import static java.util.concurrent.TimeUnit.MILLISECONDS;
44	<	import java.io.*;
45	<	import java.security.*;
44	>	import static java.util.concurrent.TimeUnit.MINUTES;
45	>	import static java.util.concurrent.TimeUnit.NANOSECONDS;
46	>
47	>	import java.io.ByteArrayInputStream;
48	>	import java.io.ByteArrayOutputStream;
49	>	import java.io.ObjectInputStream;
50	>	import java.io.ObjectOutputStream;
51	>	import java.lang.management.ManagementFactory;
52	>	import java.lang.management.ThreadInfo;
53	>	import java.lang.management.ThreadMXBean;
54	>	import java.lang.reflect.Constructor;
55	>	import java.lang.reflect.Method;
56	>	import java.lang.reflect.Modifier;
57	>	import java.security.CodeSource;
58	>	import java.security.Permission;
59	>	import java.security.PermissionCollection;
60	>	import java.security.Permissions;
61	>	import java.security.Policy;
62	>	import java.security.ProtectionDomain;
63	>	import java.security.SecurityPermission;
64	>	import java.util.ArrayList;
65	>	import java.util.Arrays;
66	>	import java.util.Collection;
67	>	import java.util.Collections;
68	>	import java.util.Date;
69	>	import java.util.Enumeration;
70	>	import java.util.Iterator;
71	>	import java.util.List;
72	>	import java.util.NoSuchElementException;
73	>	import java.util.PropertyPermission;
74	>	import java.util.concurrent.BlockingQueue;
75	>	import java.util.concurrent.Callable;
76	>	import java.util.concurrent.CountDownLatch;
77	>	import java.util.concurrent.CyclicBarrier;
78	>	import java.util.concurrent.ExecutionException;
79	>	import java.util.concurrent.Executors;
80	>	import java.util.concurrent.ExecutorService;
81	>	import java.util.concurrent.ForkJoinPool;
82	>	import java.util.concurrent.Future;
83	>	import java.util.concurrent.RecursiveAction;
84	>	import java.util.concurrent.RecursiveTask;
85	>	import java.util.concurrent.RejectedExecutionHandler;
86	>	import java.util.concurrent.Semaphore;
87	>	import java.util.concurrent.SynchronousQueue;
88	>	import java.util.concurrent.ThreadFactory;
89	>	import java.util.concurrent.ThreadLocalRandom;
90	>	import java.util.concurrent.ThreadPoolExecutor;
91	>	import java.util.concurrent.TimeoutException;
92	>	import java.util.concurrent.atomic.AtomicBoolean;
93	>	import java.util.concurrent.atomic.AtomicReference;
94	>	import java.util.regex.Pattern;
95	>
96	>	import junit.framework.AssertionFailedError;
97	>	import junit.framework.Test;
98	>	import junit.framework.TestCase;
99	>	import junit.framework.TestResult;
100	>	import junit.framework.TestSuite;
101
102		/**
103		* Base class for JSR166 Junit TCK tests.  Defines some constants,
#	Line 23 | Line 109 | import java.security.*;
109		*
110		* <ol>
111		*
112	<	* <li> All assertions in code running in generated threads must use
112	>	* <li>All assertions in code running in generated threads must use
113		* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
114		* #threadAssertEquals}, or {@link #threadAssertNull}, (not
115	<	* <tt>fail</tt>, <tt>assertTrue</tt>, etc.) It is OK (but not
115	>	* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
116		* particularly recommended) for other code to use these forms too.
117		* Only the most typically used JUnit assertion methods are defined
118	<	* this way, but enough to live with.</li>
118	>	* this way, but enough to live with.
119		*
120	<	* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
121	<	* to invoke <tt>super.setUp</tt> and <tt>super.tearDown</tt> within
120	>	* <li>If you override {@link #setUp} or {@link #tearDown}, make sure
121	>	* to invoke {@code super.setUp} and {@code super.tearDown} within
122		* them. These methods are used to clear and check for thread
123	<	* assertion failures.</li>
123	>	* assertion failures.
124		*
125	<	* <li>All delays and timeouts must use one of the constants <tt>
126	<	* SHORT_DELAY_MS</tt>, <tt> SMALL_DELAY_MS</tt>, <tt> MEDIUM_DELAY_MS</tt>,
127	<	* <tt> LONG_DELAY_MS</tt>. The idea here is that a SHORT is always
125	>	* <li>All delays and timeouts must use one of the constants {@code
126	>	* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
127	>	* {@code LONG_DELAY_MS}. The idea here is that a SHORT is always
128		* discriminable from zero time, and always allows enough time for the
129		* small amounts of computation (creating a thread, calling a few
130		* methods, etc) needed to reach a timeout point. Similarly, a SMALL
131		* is always discriminable as larger than SHORT and smaller than
132		* MEDIUM.  And so on. These constants are set to conservative values,
133		* but even so, if there is ever any doubt, they can all be increased
134	<	* in one spot to rerun tests on slower platforms.</li>
134	>	* in one spot to rerun tests on slower platforms.
135		*
136	<	* <li> All threads generated must be joined inside each test case
137	<	* method (or <tt>fail</tt> to do so) before returning from the
138	<	* method. The <tt> joinPool</tt> method can be used to do this when
139	<	* using Executors.</li>
136	>	* <li>All threads generated must be joined inside each test case
137	>	* method (or {@code fail} to do so) before returning from the
138	>	* method. The {@code joinPool} method can be used to do this when
139	>	* using Executors.
140		*
141		* </ol>
142		*
143	<	* <p> <b>Other notes</b>
143	>	* <p><b>Other notes</b>
144		* <ul>
145		*
146	<	* <li> Usually, there is one testcase method per JSR166 method
146	>	* <li>Usually, there is one testcase method per JSR166 method
147		* covering "normal" operation, and then as many exception-testing
148		* methods as there are exceptions the method can throw. Sometimes
149		* there are multiple tests per JSR166 method when the different
150		* "normal" behaviors differ significantly. And sometimes testcases
151	<	* cover multiple methods when they cannot be tested in
66	<	* isolation.</li>
151	>	* cover multiple methods when they cannot be tested in isolation.
152		*
153	<	* <li> The documentation style for testcases is to provide as javadoc
153	>	* <li>The documentation style for testcases is to provide as javadoc
154		* a simple sentence or two describing the property that the testcase
155		* method purports to test. The javadocs do not say anything about how
156	<	* the property is tested. To find out, read the code.</li>
156	>	* the property is tested. To find out, read the code.
157		*
158	<	* <li> These tests are "conformance tests", and do not attempt to
158	>	* <li>These tests are "conformance tests", and do not attempt to
159		* test throughput, latency, scalability or other performance factors
160		* (see the separate "jtreg" tests for a set intended to check these
161		* for the most central aspects of functionality.) So, most tests use
162		* the smallest sensible numbers of threads, collection sizes, etc
163	<	* needed to check basic conformance.</li>
163	>	* needed to check basic conformance.
164		*
165		* <li>The test classes currently do not declare inclusion in
166		* any particular package to simplify things for people integrating
167	<	* them in TCK test suites.</li>
167	>	* them in TCK test suites.
168		*
169	<	* <li> As a convenience, the <tt>main</tt> of this class (JSR166TestCase)
170	<	* runs all JSR166 unit tests.</li>
169	>	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
170	>	* runs all JSR166 unit tests.
171		*
172		* </ul>
173		*/
174		public class JSR166TestCase extends TestCase {
175	+	private static final boolean useSecurityManager =
176	+	Boolean.getBoolean("jsr166.useSecurityManager");
177	+
178	+	protected static final boolean expensiveTests =
179	+	Boolean.getBoolean("jsr166.expensiveTests");
180	+
181		/**
182	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
182	>	* If true, also run tests that are not part of the official tck
183	>	* because they test unspecified implementation details.
184		*/
185	<	public static void main (String[] args) {
186	<	int iters = 1;
187	<	if (args.length > 0)
188	<	iters = Integer.parseInt(args[0]);
189	<	Test s = suite();
190	<	for (int i = 0; i < iters; ++i) {
191	<	junit.textui.TestRunner.run (s);
192	<	System.gc();
193	<	System.runFinalization();
185	>	protected static final boolean testImplementationDetails =
186	>	Boolean.getBoolean("jsr166.testImplementationDetails");
187	>
188	>	/**
189	>	* If true, report on stdout all "slow" tests, that is, ones that
190	>	* take more than profileThreshold milliseconds to execute.
191	>	*/
192	>	private static final boolean profileTests =
193	>	Boolean.getBoolean("jsr166.profileTests");
194	>
195	>	/**
196	>	* The number of milliseconds that tests are permitted for
197	>	* execution without being reported, when profileTests is set.
198	>	*/
199	>	private static final long profileThreshold =
200	>	Long.getLong("jsr166.profileThreshold", 100);
201	>
202	>	/**
203	>	* The number of repetitions per test (for tickling rare bugs).
204	>	*/
205	>	private static final int runsPerTest =
206	>	Integer.getInteger("jsr166.runsPerTest", 1);
207	>
208	>	/**
209	>	* The number of repetitions of the test suite (for finding leaks?).
210	>	*/
211	>	private static final int suiteRuns =
212	>	Integer.getInteger("jsr166.suiteRuns", 1);
213	>
214	>	/**
215	>	* Returns the value of the system property, or NaN if not defined.
216	>	*/
217	>	private static float systemPropertyValue(String name) {
218	>	String floatString = System.getProperty(name);
219	>	if (floatString == null)
220	>	return Float.NaN;
221	>	try {
222	>	return Float.parseFloat(floatString);
223	>	} catch (NumberFormatException ex) {
224	>	throw new IllegalArgumentException(
225	>	String.format("Bad float value in system property %s=%s",
226	>	name, floatString));
227	>	}
228	>	}
229	>
230	>	/**
231	>	* The scaling factor to apply to standard delays used in tests.
232	>	* May be initialized from any of:
233	>	* - the "jsr166.delay.factor" system property
234	>	* - the "test.timeout.factor" system property (as used by jtreg)
235	>	*   See: http://openjdk.java.net/jtreg/tag-spec.html
236	>	* - hard-coded fuzz factor when using a known slowpoke VM
237	>	*/
238	>	private static final float delayFactor = delayFactor();
239	>
240	>	private static float delayFactor() {
241	>	float x;
242	>	if (!Float.isNaN(x = systemPropertyValue("jsr166.delay.factor")))
243	>	return x;
244	>	if (!Float.isNaN(x = systemPropertyValue("test.timeout.factor")))
245	>	return x;
246	>	String prop = System.getProperty("java.vm.version");
247	>	if (prop != null && prop.matches(".*debug.*"))
248	>	return 4.0f; // How much slower is fastdebug than product?!
249	>	return 1.0f;
250	>	}
251	>
252	>	public JSR166TestCase() { super(); }
253	>	public JSR166TestCase(String name) { super(name); }
254	>
255	>	/**
256	>	* A filter for tests to run, matching strings of the form
257	>	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
258	>	* Usefully combined with jsr166.runsPerTest.
259	>	*/
260	>	private static final Pattern methodFilter = methodFilter();
261	>
262	>	private static Pattern methodFilter() {
263	>	String regex = System.getProperty("jsr166.methodFilter");
264	>	return (regex == null) ? null : Pattern.compile(regex);
265	>	}
266	>
267	>	// Instrumentation to debug very rare, but very annoying hung test runs.
268	>	static volatile TestCase currentTestCase;
269	>	// static volatile int currentRun = 0;
270	>	static {
271	>	Runnable checkForWedgedTest = new Runnable() { public void run() {
272	>	// Avoid spurious reports with enormous runsPerTest.
273	>	// A single test case run should never take more than 1 second.
274	>	// But let's cap it at the high end too ...
275	>	final int timeoutMinutes =
276	>	Math.min(15, Math.max(runsPerTest / 60, 1));
277	>	for (TestCase lastTestCase = currentTestCase;;) {
278	>	try { MINUTES.sleep(timeoutMinutes); }
279	>	catch (InterruptedException unexpected) { break; }
280	>	if (lastTestCase == currentTestCase) {
281	>	System.err.printf(
282	>	"Looks like we're stuck running test: %s%n",
283	>	lastTestCase);
284	>	//                     System.err.printf(
285	>	//                         "Looks like we're stuck running test: %s (%d/%d)%n",
286	>	//                         lastTestCase, currentRun, runsPerTest);
287	>	//                     System.err.println("availableProcessors=" +
288	>	//                         Runtime.getRuntime().availableProcessors());
289	>	//                     System.err.printf("cpu model = %s%n", cpuModel());
290	>	dumpTestThreads();
291	>	// one stack dump is probably enough; more would be spam
292	>	break;
293	>	}
294	>	lastTestCase = currentTestCase;
295	>	}}};
296	>	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
297	>	thread.setDaemon(true);
298	>	thread.start();
299	>	}
300	>
301	>	//     public static String cpuModel() {
302	>	//         try {
303	>	//             java.util.regex.Matcher matcher
304	>	//               = Pattern.compile("model name\\s*: (.*)")
305	>	//                 .matcher(new String(
306	>	//                     java.nio.file.Files.readAllBytes(
307	>	//                         java.nio.file.Paths.get("/proc/cpuinfo")), "UTF-8"));
308	>	//             matcher.find();
309	>	//             return matcher.group(1);
310	>	//         } catch (Exception ex) { return null; }
311	>	//     }
312	>
313	>	public void runBare() throws Throwable {
314	>	currentTestCase = this;
315	>	if (methodFilter == null
316	>	|| methodFilter.matcher(toString()).find())
317	>	super.runBare();
318	>	}
319	>
320	>	protected void runTest() throws Throwable {
321	>	for (int i = 0; i < runsPerTest; i++) {
322	>	// currentRun = i;
323	>	if (profileTests)
324	>	runTestProfiled();
325	>	else
326	>	super.runTest();
327	>	}
328	>	}
329	>
330	>	protected void runTestProfiled() throws Throwable {
331	>	for (int i = 0; i < 2; i++) {
332	>	long startTime = System.nanoTime();
333	>	super.runTest();
334	>	long elapsedMillis = millisElapsedSince(startTime);
335	>	if (elapsedMillis < profileThreshold)
336	>	break;
337	>	// Never report first run of any test; treat it as a
338	>	// warmup run, notably to trigger all needed classloading,
339	>	if (i > 0)
340	>	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
341	>	}
342	>	}
343	>
344	>	/**
345	>	* Runs all JSR166 unit tests using junit.textui.TestRunner.
346	>	*/
347	>	public static void main(String[] args) {
348	>	main(suite(), args);
349	>	}
350	>
351	>	static class PithyResultPrinter extends junit.textui.ResultPrinter {
352	>	PithyResultPrinter(java.io.PrintStream writer) { super(writer); }
353	>	long runTime;
354	>	public void startTest(Test test) {}
355	>	protected void printHeader(long runTime) {
356	>	this.runTime = runTime; // defer printing for later
357	>	}
358	>	protected void printFooter(TestResult result) {
359	>	if (result.wasSuccessful()) {
360	>	getWriter().println("OK (" + result.runCount() + " tests)"
361	>	+ "  Time: " + elapsedTimeAsString(runTime));
362	>	} else {
363	>	getWriter().println("Time: " + elapsedTimeAsString(runTime));
364	>	super.printFooter(result);
365	>	}
366		}
103	–	System.exit(0);
367		}
368
369		/**
370	<	* Collects all JSR166 unit tests as one suite
370	>	* Returns a TestRunner that doesn't bother with unnecessary
371	>	* fluff, like printing a "." for each test case.
372		*/
373	<	public static Test suite ( ) {
374	<	TestSuite suite = new TestSuite("JSR166 Unit Tests");
373	>	static junit.textui.TestRunner newPithyTestRunner() {
374	>	junit.textui.TestRunner runner = new junit.textui.TestRunner();
375	>	runner.setPrinter(new PithyResultPrinter(System.out));
376	>	return runner;
377	>	}
378
379	<	suite.addTest(new TestSuite(ForkJoinPoolTest.class));
380	<	suite.addTest(new TestSuite(ForkJoinTaskTest.class));
381	<	suite.addTest(new TestSuite(RecursiveActionTest.class));
382	<	suite.addTest(new TestSuite(RecursiveTaskTest.class));
383	<	suite.addTest(new TestSuite(LinkedTransferQueueTest.class));
384	<	suite.addTest(new TestSuite(PhaserTest.class));
385	<	suite.addTest(new TestSuite(ThreadLocalRandomTest.class));
386	<	suite.addTest(new TestSuite(AbstractExecutorServiceTest.class));
387	<	suite.addTest(new TestSuite(AbstractQueueTest.class));
388	<	suite.addTest(new TestSuite(AbstractQueuedSynchronizerTest.class));
389	<	suite.addTest(new TestSuite(AbstractQueuedLongSynchronizerTest.class));
390	<	suite.addTest(new TestSuite(ArrayBlockingQueueTest.class));
391	<	suite.addTest(new TestSuite(ArrayDequeTest.class));
392	<	suite.addTest(new TestSuite(AtomicBooleanTest.class));
393	<	suite.addTest(new TestSuite(AtomicIntegerArrayTest.class));
394	<	suite.addTest(new TestSuite(AtomicIntegerFieldUpdaterTest.class));
395	<	suite.addTest(new TestSuite(AtomicIntegerTest.class));
396	<	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));
379	>	/**
380	>	* Runs all unit tests in the given test suite.
381	>	* Actual behavior influenced by jsr166.* system properties.
382	>	*/
383	>	static void main(Test suite, String[] args) {
384	>	if (useSecurityManager) {
385	>	System.err.println("Setting a permissive security manager");
386	>	Policy.setPolicy(permissivePolicy());
387	>	System.setSecurityManager(new SecurityManager());
388	>	}
389	>	for (int i = 0; i < suiteRuns; i++) {
390	>	TestResult result = newPithyTestRunner().doRun(suite);
391	>	if (!result.wasSuccessful())
392	>	System.exit(1);
393	>	System.gc();
394	>	System.runFinalization();
395	>	}
396	>	}
397
398	+	public static TestSuite newTestSuite(Object... suiteOrClasses) {
399	+	TestSuite suite = new TestSuite();
400	+	for (Object suiteOrClass : suiteOrClasses) {
401	+	if (suiteOrClass instanceof TestSuite)
402	+	suite.addTest((TestSuite) suiteOrClass);
403	+	else if (suiteOrClass instanceof Class)
404	+	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
405	+	else
406	+	throw new ClassCastException("not a test suite or class");
407	+	}
408		return suite;
409		}
410
411	+	public static void addNamedTestClasses(TestSuite suite,
412	+	String... testClassNames) {
413	+	for (String testClassName : testClassNames) {
414	+	try {
415	+	Class<?> testClass = Class.forName(testClassName);
416	+	Method m = testClass.getDeclaredMethod("suite",
417	+	new Class<?>[0]);
418	+	suite.addTest(newTestSuite((Test)m.invoke(null)));
419	+	} catch (Exception e) {
420	+	throw new Error("Missing test class", e);
421	+	}
422	+	}
423	+	}
424	+
425	+	public static final double JAVA_CLASS_VERSION;
426	+	public static final String JAVA_SPECIFICATION_VERSION;
427	+	static {
428	+	try {
429	+	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
430	+	new java.security.PrivilegedAction<Double>() {
431	+	public Double run() {
432	+	return Double.valueOf(System.getProperty("java.class.version"));}});
433	+	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
434	+	new java.security.PrivilegedAction<String>() {
435	+	public String run() {
436	+	return System.getProperty("java.specification.version");}});
437	+	} catch (Throwable t) {
438	+	throw new Error(t);
439	+	}
440	+	}
441	+
442	+	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
443	+	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
444	+	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
445	+	public static boolean atLeastJava9() {
446	+	return JAVA_CLASS_VERSION >= 53.0
447	+	// As of 2015-09, java9 still uses 52.0 class file version
448	+	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?(9|[0-9][0-9])$");
449	+	}
450	+	public static boolean atLeastJava10() {
451	+	return JAVA_CLASS_VERSION >= 54.0
452	+	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?[0-9][0-9]$");
453	+	}
454	+
455	+	/**
456	+	* Collects all JSR166 unit tests as one suite.
457	+	*/
458	+	public static Test suite() {
459	+	// Java7+ test classes
460	+	TestSuite suite = newTestSuite(
461	+	ForkJoinPoolTest.suite(),
462	+	ForkJoinTaskTest.suite(),
463	+	RecursiveActionTest.suite(),
464	+	RecursiveTaskTest.suite(),
465	+	LinkedTransferQueueTest.suite(),
466	+	PhaserTest.suite(),
467	+	ThreadLocalRandomTest.suite(),
468	+	AbstractExecutorServiceTest.suite(),
469	+	AbstractQueueTest.suite(),
470	+	AbstractQueuedSynchronizerTest.suite(),
471	+	AbstractQueuedLongSynchronizerTest.suite(),
472	+	ArrayBlockingQueueTest.suite(),
473	+	ArrayDequeTest.suite(),
474	+	ArrayListTest.suite(),
475	+	AtomicBooleanTest.suite(),
476	+	AtomicIntegerArrayTest.suite(),
477	+	AtomicIntegerFieldUpdaterTest.suite(),
478	+	AtomicIntegerTest.suite(),
479	+	AtomicLongArrayTest.suite(),
480	+	AtomicLongFieldUpdaterTest.suite(),
481	+	AtomicLongTest.suite(),
482	+	AtomicMarkableReferenceTest.suite(),
483	+	AtomicReferenceArrayTest.suite(),
484	+	AtomicReferenceFieldUpdaterTest.suite(),
485	+	AtomicReferenceTest.suite(),
486	+	AtomicStampedReferenceTest.suite(),
487	+	ConcurrentHashMapTest.suite(),
488	+	ConcurrentLinkedDequeTest.suite(),
489	+	ConcurrentLinkedQueueTest.suite(),
490	+	ConcurrentSkipListMapTest.suite(),
491	+	ConcurrentSkipListSubMapTest.suite(),
492	+	ConcurrentSkipListSetTest.suite(),
493	+	ConcurrentSkipListSubSetTest.suite(),
494	+	CopyOnWriteArrayListTest.suite(),
495	+	CopyOnWriteArraySetTest.suite(),
496	+	CountDownLatchTest.suite(),
497	+	CountedCompleterTest.suite(),
498	+	CyclicBarrierTest.suite(),
499	+	DelayQueueTest.suite(),
500	+	EntryTest.suite(),
501	+	ExchangerTest.suite(),
502	+	ExecutorsTest.suite(),
503	+	ExecutorCompletionServiceTest.suite(),
504	+	FutureTaskTest.suite(),
505	+	LinkedBlockingDequeTest.suite(),
506	+	LinkedBlockingQueueTest.suite(),
507	+	LinkedListTest.suite(),
508	+	LockSupportTest.suite(),
509	+	PriorityBlockingQueueTest.suite(),
510	+	PriorityQueueTest.suite(),
511	+	ReentrantLockTest.suite(),
512	+	ReentrantReadWriteLockTest.suite(),
513	+	ScheduledExecutorTest.suite(),
514	+	ScheduledExecutorSubclassTest.suite(),
515	+	SemaphoreTest.suite(),
516	+	SynchronousQueueTest.suite(),
517	+	SystemTest.suite(),
518	+	ThreadLocalTest.suite(),
519	+	ThreadPoolExecutorTest.suite(),
520	+	ThreadPoolExecutorSubclassTest.suite(),
521	+	ThreadTest.suite(),
522	+	TimeUnitTest.suite(),
523	+	TreeMapTest.suite(),
524	+	TreeSetTest.suite(),
525	+	TreeSubMapTest.suite(),
526	+	TreeSubSetTest.suite(),
527	+	VectorTest.suite());
528	+
529	+	// Java8+ test classes
530	+	if (atLeastJava8()) {
531	+	String[] java8TestClassNames = {
532	+	"ArrayDeque8Test",
533	+	"Atomic8Test",
534	+	"CompletableFutureTest",
535	+	"ConcurrentHashMap8Test",
536	+	"CountedCompleter8Test",
537	+	"DoubleAccumulatorTest",
538	+	"DoubleAdderTest",
539	+	"ForkJoinPool8Test",
540	+	"ForkJoinTask8Test",
541	+	"LinkedBlockingDeque8Test",
542	+	"LinkedBlockingQueue8Test",
543	+	"LongAccumulatorTest",
544	+	"LongAdderTest",
545	+	"SplittableRandomTest",
546	+	"StampedLockTest",
547	+	"SubmissionPublisherTest",
548	+	"ThreadLocalRandom8Test",
549	+	"TimeUnit8Test",
550	+	};
551	+	addNamedTestClasses(suite, java8TestClassNames);
552	+	}
553	+
554	+	// Java9+ test classes
555	+	if (atLeastJava9()) {
556	+	String[] java9TestClassNames = {
557	+	"AtomicBoolean9Test",
558	+	"AtomicInteger9Test",
559	+	"AtomicIntegerArray9Test",
560	+	"AtomicLong9Test",
561	+	"AtomicLongArray9Test",
562	+	"AtomicReference9Test",
563	+	"AtomicReferenceArray9Test",
564	+	"ExecutorCompletionService9Test",
565	+	"ForkJoinPool9Test",
566	+	};
567	+	addNamedTestClasses(suite, java9TestClassNames);
568	+	}
569	+
570	+	return suite;
571	+	}
572	+
573	+	/** Returns list of junit-style test method names in given class. */
574	+	public static ArrayList<String> testMethodNames(Class<?> testClass) {
575	+	Method[] methods = testClass.getDeclaredMethods();
576	+	ArrayList<String> names = new ArrayList<>(methods.length);
577	+	for (Method method : methods) {
578	+	if (method.getName().startsWith("test")
579	+	&& Modifier.isPublic(method.getModifiers())
580	+	// method.getParameterCount() requires jdk8+
581	+	&& method.getParameterTypes().length == 0) {
582	+	names.add(method.getName());
583	+	}
584	+	}
585	+	return names;
586	+	}
587	+
588	+	/**
589	+	* Returns junit-style testSuite for the given test class, but
590	+	* parameterized by passing extra data to each test.
591	+	*/
592	+	public static <ExtraData> Test parameterizedTestSuite
593	+	(Class<? extends JSR166TestCase> testClass,
594	+	Class<ExtraData> dataClass,
595	+	ExtraData data) {
596	+	try {
597	+	TestSuite suite = new TestSuite();
598	+	Constructor c =
599	+	testClass.getDeclaredConstructor(dataClass, String.class);
600	+	for (String methodName : testMethodNames(testClass))
601	+	suite.addTest((Test) c.newInstance(data, methodName));
602	+	return suite;
603	+	} catch (Exception e) {
604	+	throw new Error(e);
605	+	}
606	+	}
607	+
608	+	/**
609	+	* Returns junit-style testSuite for the jdk8 extension of the
610	+	* given test class, but parameterized by passing extra data to
611	+	* each test.  Uses reflection to allow compilation in jdk7.
612	+	*/
613	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
614	+	(Class<? extends JSR166TestCase> testClass,
615	+	Class<ExtraData> dataClass,
616	+	ExtraData data) {
617	+	if (atLeastJava8()) {
618	+	String name = testClass.getName();
619	+	String name8 = name.replaceAll("Test$", "8Test");
620	+	if (name.equals(name8)) throw new Error(name);
621	+	try {
622	+	return (Test)
623	+	Class.forName(name8)
624	+	.getMethod("testSuite", new Class[] { dataClass })
625	+	.invoke(null, data);
626	+	} catch (Exception e) {
627	+	throw new Error(e);
628	+	}
629	+	} else {
630	+	return new TestSuite();
631	+	}
632	+	}
633	+
634	+	// Delays for timing-dependent tests, in milliseconds.
635
636		public static long SHORT_DELAY_MS;
637		public static long SMALL_DELAY_MS;
638		public static long MEDIUM_DELAY_MS;
639		public static long LONG_DELAY_MS;
640
185	–
641		/**
642	<	* Returns the shortest timed delay. This could
643	<	* be reimplemented to use for example a Property.
642	>	* Returns the shortest timed delay. This can be scaled up for
643	>	* slow machines using the jsr166.delay.factor system property,
644	>	* or via jtreg's -timeoutFactor: flag.
645	>	* http://openjdk.java.net/jtreg/command-help.html
646		*/
647		protected long getShortDelay() {
648	<	return 50;
648	>	return (long) (50 * delayFactor);
649		}
650
194	–
651		/**
652		* Sets delays as multiples of SHORT_DELAY.
653		*/
654	<	protected  void setDelays() {
654	>	protected void setDelays() {
655		SHORT_DELAY_MS = getShortDelay();
656	<	SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
656	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
657		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
658	<	LONG_DELAY_MS = SHORT_DELAY_MS * 50;
658	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
659	>	}
660	>
661	>	private static final long TIMEOUT_DELAY_MS
662	>	= (long) (12.0 * Math.cbrt(delayFactor));
663	>
664	>	/**
665	>	* Returns a timeout in milliseconds to be used in tests that verify
666	>	* that operations block or time out.  We want this to be longer
667	>	* than the OS scheduling quantum, but not too long, so don't scale
668	>	* linearly with delayFactor; we use "crazy" cube root instead.
669	>	*/
670	>	static long timeoutMillis() {
671	>	return TIMEOUT_DELAY_MS;
672	>	}
673	>
674	>	/**
675	>	* Returns a new Date instance representing a time at least
676	>	* delayMillis milliseconds in the future.
677	>	*/
678	>	Date delayedDate(long delayMillis) {
679	>	// Add 1 because currentTimeMillis is known to round into the past.
680	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
681		}
682
683		/**
684	<	* Flag set true if any threadAssert methods fail
684	>	* The first exception encountered if any threadAssertXXX method fails.
685		*/
686	<	volatile boolean threadFailed;
686	>	private final AtomicReference<Throwable> threadFailure
687	>	= new AtomicReference<>(null);
688
689		/**
690	<	* Initializes test to indicate that no thread assertions have failed
690	>	* Records an exception so that it can be rethrown later in the test
691	>	* harness thread, triggering a test case failure.  Only the first
692	>	* failure is recorded; subsequent calls to this method from within
693	>	* the same test have no effect.
694		*/
695	+	public void threadRecordFailure(Throwable t) {
696	+	System.err.println(t);
697	+	dumpTestThreads();
698	+	threadFailure.compareAndSet(null, t);
699	+	}
700	+
701		public void setUp() {
702		setDelays();
703	<	threadFailed = false;
703	>	}
704	>
705	>	void tearDownFail(String format, Object... args) {
706	>	String msg = toString() + ": " + String.format(format, args);
707	>	System.err.println(msg);
708	>	dumpTestThreads();
709	>	throw new AssertionFailedError(msg);
710		}
711
712		/**
713	<	* Triggers test case failure if any thread assertions have failed
713	>	* Extra checks that get done for all test cases.
714	>	*
715	>	* Triggers test case failure if any thread assertions have failed,
716	>	* by rethrowing, in the test harness thread, any exception recorded
717	>	* earlier by threadRecordFailure.
718	>	*
719	>	* Triggers test case failure if interrupt status is set in the main thread.
720	>	*/
721	>	public void tearDown() throws Exception {
722	>	Throwable t = threadFailure.getAndSet(null);
723	>	if (t != null) {
724	>	if (t instanceof Error)
725	>	throw (Error) t;
726	>	else if (t instanceof RuntimeException)
727	>	throw (RuntimeException) t;
728	>	else if (t instanceof Exception)
729	>	throw (Exception) t;
730	>	else {
731	>	AssertionFailedError afe =
732	>	new AssertionFailedError(t.toString());
733	>	afe.initCause(t);
734	>	throw afe;
735	>	}
736	>	}
737	>
738	>	if (Thread.interrupted())
739	>	tearDownFail("interrupt status set in main thread");
740	>
741	>	checkForkJoinPoolThreadLeaks();
742	>	}
743	>
744	>	/**
745	>	* Finds missing PoolCleaners
746		*/
747	<	public void tearDown() {
748	<	assertFalse(threadFailed);
747	>	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
748	>	Thread[] survivors = new Thread[7];
749	>	int count = Thread.enumerate(survivors);
750	>	for (int i = 0; i < count; i++) {
751	>	Thread thread = survivors[i];
752	>	String name = thread.getName();
753	>	if (name.startsWith("ForkJoinPool-")) {
754	>	// give thread some time to terminate
755	>	thread.join(LONG_DELAY_MS);
756	>	if (thread.isAlive())
757	>	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
758	>	thread);
759	>	}
760	>	}
761	>
762	>	if (!ForkJoinPool.commonPool()
763	>	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
764	>	tearDownFail("ForkJoin common pool thread stuck");
765		}
766
767		/**
768	<	* Fail, also setting status to indicate current testcase should fail
768	>	* Just like fail(reason), but additionally recording (using
769	>	* threadRecordFailure) any AssertionFailedError thrown, so that
770	>	* the current testcase will fail.
771		*/
772		public void threadFail(String reason) {
773	<	threadFailed = true;
774	<	fail(reason);
773	>	try {
774	>	fail(reason);
775	>	} catch (AssertionFailedError t) {
776	>	threadRecordFailure(t);
777	>	throw t;
778	>	}
779		}
780
781		/**
782	<	* If expression not true, set status to indicate current testcase
783	<	* should fail
782	>	* Just like assertTrue(b), but additionally recording (using
783	>	* threadRecordFailure) any AssertionFailedError thrown, so that
784	>	* the current testcase will fail.
785		*/
786		public void threadAssertTrue(boolean b) {
787	<	if (!b) {
239	<	threadFailed = true;
787	>	try {
788		assertTrue(b);
789	+	} catch (AssertionFailedError t) {
790	+	threadRecordFailure(t);
791	+	throw t;
792		}
793		}
794
795		/**
796	<	* If expression not false, set status to indicate current testcase
797	<	* should fail
796	>	* Just like assertFalse(b), but additionally recording (using
797	>	* threadRecordFailure) any AssertionFailedError thrown, so that
798	>	* the current testcase will fail.
799		*/
800		public void threadAssertFalse(boolean b) {
801	<	if (b) {
250	<	threadFailed = true;
801	>	try {
802		assertFalse(b);
803	+	} catch (AssertionFailedError t) {
804	+	threadRecordFailure(t);
805	+	throw t;
806		}
807		}
808
809		/**
810	<	* If argument not null, set status to indicate current testcase
811	<	* should fail
810	>	* Just like assertNull(x), but additionally recording (using
811	>	* threadRecordFailure) any AssertionFailedError thrown, so that
812	>	* the current testcase will fail.
813		*/
814		public void threadAssertNull(Object x) {
815	<	if (x != null) {
261	<	threadFailed = true;
815	>	try {
816		assertNull(x);
817	+	} catch (AssertionFailedError t) {
818	+	threadRecordFailure(t);
819	+	throw t;
820		}
821		}
822
823		/**
824	<	* If arguments not equal, set status to indicate current testcase
825	<	* should fail
824	>	* Just like assertEquals(x, y), but additionally recording (using
825	>	* threadRecordFailure) any AssertionFailedError thrown, so that
826	>	* the current testcase will fail.
827		*/
828		public void threadAssertEquals(long x, long y) {
829	<	if (x != y) {
272	<	threadFailed = true;
829	>	try {
830		assertEquals(x, y);
831	+	} catch (AssertionFailedError t) {
832	+	threadRecordFailure(t);
833	+	throw t;
834		}
835		}
836
837		/**
838	<	* If arguments not equal, set status to indicate current testcase
839	<	* should fail
838	>	* Just like assertEquals(x, y), but additionally recording (using
839	>	* threadRecordFailure) any AssertionFailedError thrown, so that
840	>	* the current testcase will fail.
841		*/
842		public void threadAssertEquals(Object x, Object y) {
843	<	if (x != y && (x == null || !x.equals(y))) {
283	<	threadFailed = true;
843	>	try {
844		assertEquals(x, y);
845	+	} catch (AssertionFailedError fail) {
846	+	threadRecordFailure(fail);
847	+	throw fail;
848	+	} catch (Throwable fail) {
849	+	threadUnexpectedException(fail);
850		}
851		}
852
853		/**
854	<	* threadFail with message "should throw exception"
854	>	* Just like assertSame(x, y), but additionally recording (using
855	>	* threadRecordFailure) any AssertionFailedError thrown, so that
856	>	* the current testcase will fail.
857	>	*/
858	>	public void threadAssertSame(Object x, Object y) {
859	>	try {
860	>	assertSame(x, y);
861	>	} catch (AssertionFailedError fail) {
862	>	threadRecordFailure(fail);
863	>	throw fail;
864	>	}
865	>	}
866	>
867	>	/**
868	>	* Calls threadFail with message "should throw exception".
869		*/
870		public void threadShouldThrow() {
871	<	threadFailed = true;
293	<	fail("should throw exception");
871	>	threadFail("should throw exception");
872		}
873
874		/**
875	<	* threadFail with message "Unexpected exception"
875	>	* Calls threadFail with message "should throw" + exceptionName.
876		*/
877	<	public void threadUnexpectedException() {
878	<	threadFailed = true;
301	<	fail("Unexpected exception");
877	>	public void threadShouldThrow(String exceptionName) {
878	>	threadFail("should throw " + exceptionName);
879		}
880
881		/**
882	<	* threadFail with message "Unexpected exception", with argument
882	>	* Records the given exception using {@link #threadRecordFailure},
883	>	* then rethrows the exception, wrapping it in an
884	>	* AssertionFailedError if necessary.
885		*/
886	<	public void threadUnexpectedException(Throwable ex) {
887	<	threadFailed = true;
888	<	ex.printStackTrace();
889	<	fail("Unexpected exception: " + ex);
886	>	public void threadUnexpectedException(Throwable t) {
887	>	threadRecordFailure(t);
888	>	t.printStackTrace();
889	>	if (t instanceof RuntimeException)
890	>	throw (RuntimeException) t;
891	>	else if (t instanceof Error)
892	>	throw (Error) t;
893	>	else {
894	>	AssertionFailedError afe =
895	>	new AssertionFailedError("unexpected exception: " + t);
896	>	afe.initCause(t);
897	>	throw afe;
898	>	}
899	>	}
900	>
901	>	/**
902	>	* Delays, via Thread.sleep, for the given millisecond delay, but
903	>	* if the sleep is shorter than specified, may re-sleep or yield
904	>	* until time elapses.  Ensures that the given time, as measured
905	>	* by System.nanoTime(), has elapsed.
906	>	*/
907	>	static void delay(long millis) throws InterruptedException {
908	>	long nanos = millis * (1000 * 1000);
909	>	final long wakeupTime = System.nanoTime() + nanos;
910	>	do {
911	>	if (millis > 0L)
912	>	Thread.sleep(millis);
913	>	else // too short to sleep
914	>	Thread.yield();
915	>	nanos = wakeupTime - System.nanoTime();
916	>	millis = nanos / (1000 * 1000);
917	>	} while (nanos >= 0L);
918	>	}
919	>
920	>	/**
921	>	* Allows use of try-with-resources with per-test thread pools.
922	>	*/
923	>	class PoolCleaner implements AutoCloseable {
924	>	private final ExecutorService pool;
925	>	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
926	>	public void close() { joinPool(pool); }
927	>	}
928	>
929	>	/**
930	>	* An extension of PoolCleaner that has an action to release the pool.
931	>	*/
932	>	class PoolCleanerWithReleaser extends PoolCleaner {
933	>	private final Runnable releaser;
934	>	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
935	>	super(pool);
936	>	this.releaser = releaser;
937	>	}
938	>	public void close() {
939	>	try {
940	>	releaser.run();
941	>	} finally {
942	>	super.close();
943	>	}
944	>	}
945	>	}
946	>
947	>	PoolCleaner cleaner(ExecutorService pool) {
948	>	return new PoolCleaner(pool);
949	>	}
950	>
951	>	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
952	>	return new PoolCleanerWithReleaser(pool, releaser);
953	>	}
954	>
955	>	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
956	>	return new PoolCleanerWithReleaser(pool, releaser(latch));
957	>	}
958	>
959	>	Runnable releaser(final CountDownLatch latch) {
960	>	return new Runnable() { public void run() {
961	>	do { latch.countDown(); }
962	>	while (latch.getCount() > 0);
963	>	}};
964	>	}
965	>
966	>	PoolCleaner cleaner(ExecutorService pool, AtomicBoolean flag) {
967	>	return new PoolCleanerWithReleaser(pool, releaser(flag));
968	>	}
969	>
970	>	Runnable releaser(final AtomicBoolean flag) {
971	>	return new Runnable() { public void run() { flag.set(true); }};
972		}
973
974		/**
975	<	* Wait out termination of a thread pool or fail doing so
975	>	* Waits out termination of a thread pool or fails doing so.
976		*/
977	<	public void joinPool(ExecutorService exec) {
977	>	void joinPool(ExecutorService pool) {
978		try {
979	<	exec.shutdown();
980	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
979	>	pool.shutdown();
980	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
981	>	try {
982	>	threadFail("ExecutorService " + pool +
983	>	" did not terminate in a timely manner");
984	>	} finally {
985	>	// last resort, for the benefit of subsequent tests
986	>	pool.shutdownNow();
987	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
988	>	}
989	>	}
990		} catch (SecurityException ok) {
991		// Allowed in case test doesn't have privs
992	<	} catch (InterruptedException ie) {
993	<	fail("Unexpected exception");
992	>	} catch (InterruptedException fail) {
993	>	threadFail("Unexpected InterruptedException");
994		}
995		}
996
997	+	/**
998	+	* Like Runnable, but with the freedom to throw anything.
999	+	* junit folks had the same idea:
1000	+	* http://junit.org/junit5/docs/snapshot/api/org/junit/gen5/api/Executable.html
1001	+	*/
1002	+	interface Action { public void run() throws Throwable; }
1003
1004		/**
1005	<	* fail with message "should throw exception"
1005	>	* Runs all the given actions in parallel, failing if any fail.
1006	>	* Useful for running multiple variants of tests that are
1007	>	* necessarily individually slow because they must block.
1008		*/
1009	<	public void shouldThrow() {
1010	<	fail("Should throw exception");
1009	>	void testInParallel(Action ... actions) {
1010	>	ExecutorService pool = Executors.newCachedThreadPool();
1011	>	try (PoolCleaner cleaner = cleaner(pool)) {
1012	>	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
1013	>	for (final Action action : actions)
1014	>	futures.add(pool.submit(new CheckedRunnable() {
1015	>	public void realRun() throws Throwable { action.run();}}));
1016	>	for (Future<?> future : futures)
1017	>	try {
1018	>	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
1019	>	} catch (ExecutionException ex) {
1020	>	threadUnexpectedException(ex.getCause());
1021	>	} catch (Exception ex) {
1022	>	threadUnexpectedException(ex);
1023	>	}
1024	>	}
1025		}
1026
1027		/**
1028	<	* fail with message "Unexpected exception"
1028	>	* A debugging tool to print stack traces of most threads, as jstack does.
1029	>	* Uninteresting threads are filtered out.
1030		*/
1031	<	public void unexpectedException() {
1032	<	fail("Unexpected exception");
1031	>	static void dumpTestThreads() {
1032	>	SecurityManager sm = System.getSecurityManager();
1033	>	if (sm != null) {
1034	>	try {
1035	>	System.setSecurityManager(null);
1036	>	} catch (SecurityException giveUp) {
1037	>	return;
1038	>	}
1039	>	}
1040	>
1041	>	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
1042	>	System.err.println("------ stacktrace dump start ------");
1043	>	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
1044	>	final String name = info.getThreadName();
1045	>	String lockName;
1046	>	if ("Signal Dispatcher".equals(name))
1047	>	continue;
1048	>	if ("Reference Handler".equals(name)
1049	>	&& (lockName = info.getLockName()) != null
1050	>	&& lockName.startsWith("java.lang.ref.Reference$Lock"))
1051	>	continue;
1052	>	if ("Finalizer".equals(name)
1053	>	&& (lockName = info.getLockName()) != null
1054	>	&& lockName.startsWith("java.lang.ref.ReferenceQueue$Lock"))
1055	>	continue;
1056	>	if ("checkForWedgedTest".equals(name))
1057	>	continue;
1058	>	System.err.print(info);
1059	>	}
1060	>	System.err.println("------ stacktrace dump end ------");
1061	>
1062	>	if (sm != null) System.setSecurityManager(sm);
1063	>	}
1064	>
1065	>	/**
1066	>	* Checks that thread eventually enters the expected blocked thread state.
1067	>	*/
1068	>	void assertThreadBlocks(Thread thread, Thread.State expected) {
1069	>	// always sleep at least 1 ms, avoiding transitional states
1070	>	// with high probability
1071	>	for (long retries = LONG_DELAY_MS; retries-->0; ) {
1072	>	try { delay(1); }
1073	>	catch (InterruptedException fail) {
1074	>	fail("Unexpected InterruptedException");
1075	>	}
1076	>	Thread.State s = thread.getState();
1077	>	if (s == expected)
1078	>	return;
1079	>	else if (s == Thread.State.TERMINATED)
1080	>	fail("Unexpected thread termination");
1081	>	}
1082	>	fail("timed out waiting for thread to enter thread state " + expected);
1083		}
1084
1085		/**
1086	<	* fail with message "Unexpected exception", with argument
1086	>	* Checks that thread does not terminate within the default
1087	>	* millisecond delay of {@code timeoutMillis()}.
1088		*/
1089	<	public void unexpectedException(Throwable ex) {
1090	<	ex.printStackTrace();
347	<	fail("Unexpected exception: " + ex);
1089	>	void assertThreadStaysAlive(Thread thread) {
1090	>	assertThreadStaysAlive(thread, timeoutMillis());
1091		}
1092
1093	+	/**
1094	+	* Checks that thread does not terminate within the given millisecond delay.
1095	+	*/
1096	+	void assertThreadStaysAlive(Thread thread, long millis) {
1097	+	try {
1098	+	// No need to optimize the failing case via Thread.join.
1099	+	delay(millis);
1100	+	assertTrue(thread.isAlive());
1101	+	} catch (InterruptedException fail) {
1102	+	threadFail("Unexpected InterruptedException");
1103	+	}
1104	+	}
1105	+
1106	+	/**
1107	+	* Checks that the threads do not terminate within the default
1108	+	* millisecond delay of {@code timeoutMillis()}.
1109	+	*/
1110	+	void assertThreadsStayAlive(Thread... threads) {
1111	+	assertThreadsStayAlive(timeoutMillis(), threads);
1112	+	}
1113	+
1114	+	/**
1115	+	* Checks that the threads do not terminate within the given millisecond delay.
1116	+	*/
1117	+	void assertThreadsStayAlive(long millis, Thread... threads) {
1118	+	try {
1119	+	// No need to optimize the failing case via Thread.join.
1120	+	delay(millis);
1121	+	for (Thread thread : threads)
1122	+	assertTrue(thread.isAlive());
1123	+	} catch (InterruptedException fail) {
1124	+	threadFail("Unexpected InterruptedException");
1125	+	}
1126	+	}
1127	+
1128	+	/**
1129	+	* Checks that future.get times out, with the default timeout of
1130	+	* {@code timeoutMillis()}.
1131	+	*/
1132	+	void assertFutureTimesOut(Future future) {
1133	+	assertFutureTimesOut(future, timeoutMillis());
1134	+	}
1135	+
1136	+	/**
1137	+	* Checks that future.get times out, with the given millisecond timeout.
1138	+	*/
1139	+	void assertFutureTimesOut(Future future, long timeoutMillis) {
1140	+	long startTime = System.nanoTime();
1141	+	try {
1142	+	future.get(timeoutMillis, MILLISECONDS);
1143	+	shouldThrow();
1144	+	} catch (TimeoutException success) {
1145	+	} catch (Exception fail) {
1146	+	threadUnexpectedException(fail);
1147	+	} finally { future.cancel(true); }
1148	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
1149	+	}
1150	+
1151	+	/**
1152	+	* Fails with message "should throw exception".
1153	+	*/
1154	+	public void shouldThrow() {
1155	+	fail("Should throw exception");
1156	+	}
1157	+
1158	+	/**
1159	+	* Fails with message "should throw " + exceptionName.
1160	+	*/
1161	+	public void shouldThrow(String exceptionName) {
1162	+	fail("Should throw " + exceptionName);
1163	+	}
1164	+
1165	+	/**
1166	+	* The maximum number of consecutive spurious wakeups we should
1167	+	* tolerate (from APIs like LockSupport.park) before failing a test.
1168	+	*/
1169	+	static final int MAX_SPURIOUS_WAKEUPS = 10;
1170
1171		/**
1172		* The number of elements to place in collections, arrays, etc.
1173		*/
1174	<	static final int SIZE = 20;
1174	>	public static final int SIZE = 20;
1175
1176		// Some convenient Integer constants
1177
1178	<	static final Integer zero = new Integer(0);
1179	<	static final Integer one = new Integer(1);
1180	<	static final Integer two = new Integer(2);
1181	<	static final Integer three  = new Integer(3);
1182	<	static final Integer four  = new Integer(4);
1183	<	static final Integer five  = new Integer(5);
1184	<	static final Integer six = new Integer(6);
1185	<	static final Integer seven = new Integer(7);
1186	<	static final Integer eight = new Integer(8);
1187	<	static final Integer nine = new Integer(9);
1188	<	static final Integer m1  = new Integer(-1);
1189	<	static final Integer m2  = new Integer(-2);
1190	<	static final Integer m3  = new Integer(-3);
1191	<	static final Integer m4 = new Integer(-4);
1192	<	static final Integer m5 = new Integer(-5);
1193	<	static final Integer m6 = new Integer(-6);
1194	<	static final Integer m10 = new Integer(-10);
1178	>	public static final Integer zero  = new Integer(0);
1179	>	public static final Integer one   = new Integer(1);
1180	>	public static final Integer two   = new Integer(2);
1181	>	public static final Integer three = new Integer(3);
1182	>	public static final Integer four  = new Integer(4);
1183	>	public static final Integer five  = new Integer(5);
1184	>	public static final Integer six   = new Integer(6);
1185	>	public static final Integer seven = new Integer(7);
1186	>	public static final Integer eight = new Integer(8);
1187	>	public static final Integer nine  = new Integer(9);
1188	>	public static final Integer m1  = new Integer(-1);
1189	>	public static final Integer m2  = new Integer(-2);
1190	>	public static final Integer m3  = new Integer(-3);
1191	>	public static final Integer m4  = new Integer(-4);
1192	>	public static final Integer m5  = new Integer(-5);
1193	>	public static final Integer m6  = new Integer(-6);
1194	>	public static final Integer m10 = new Integer(-10);
1195	>
1196	>	/**
1197	>	* Runs Runnable r with a security policy that permits precisely
1198	>	* the specified permissions.  If there is no current security
1199	>	* manager, the runnable is run twice, both with and without a
1200	>	* security manager.  We require that any security manager permit
1201	>	* getPolicy/setPolicy.
1202	>	*/
1203	>	public void runWithPermissions(Runnable r, Permission... permissions) {
1204	>	SecurityManager sm = System.getSecurityManager();
1205	>	if (sm == null) {
1206	>	r.run();
1207	>	}
1208	>	runWithSecurityManagerWithPermissions(r, permissions);
1209	>	}
1210	>
1211	>	/**
1212	>	* Runs Runnable r with a security policy that permits precisely
1213	>	* the specified permissions.  If there is no current security
1214	>	* manager, a temporary one is set for the duration of the
1215	>	* Runnable.  We require that any security manager permit
1216	>	* getPolicy/setPolicy.
1217	>	*/
1218	>	public void runWithSecurityManagerWithPermissions(Runnable r,
1219	>	Permission... permissions) {
1220	>	SecurityManager sm = System.getSecurityManager();
1221	>	if (sm == null) {
1222	>	Policy savedPolicy = Policy.getPolicy();
1223	>	try {
1224	>	Policy.setPolicy(permissivePolicy());
1225	>	System.setSecurityManager(new SecurityManager());
1226	>	runWithSecurityManagerWithPermissions(r, permissions);
1227	>	} finally {
1228	>	System.setSecurityManager(null);
1229	>	Policy.setPolicy(savedPolicy);
1230	>	}
1231	>	} else {
1232	>	Policy savedPolicy = Policy.getPolicy();
1233	>	AdjustablePolicy policy = new AdjustablePolicy(permissions);
1234	>	Policy.setPolicy(policy);
1235	>
1236	>	try {
1237	>	r.run();
1238	>	} finally {
1239	>	policy.addPermission(new SecurityPermission("setPolicy"));
1240	>	Policy.setPolicy(savedPolicy);
1241	>	}
1242	>	}
1243	>	}
1244
1245	+	/**
1246	+	* Runs a runnable without any permissions.
1247	+	*/
1248	+	public void runWithoutPermissions(Runnable r) {
1249	+	runWithPermissions(r);
1250	+	}
1251
1252		/**
1253		* A security policy where new permissions can be dynamically added
1254		* or all cleared.
1255		*/
1256	<	static class AdjustablePolicy extends java.security.Policy {
1256	>	public static class AdjustablePolicy extends java.security.Policy {
1257		Permissions perms = new Permissions();
1258	<	AdjustablePolicy() { }
1258	>	AdjustablePolicy(Permission... permissions) {
1259	>	for (Permission permission : permissions)
1260	>	perms.add(permission);
1261	>	}
1262		void addPermission(Permission perm) { perms.add(perm); }
1263		void clearPermissions() { perms = new Permissions(); }
1264	<	public PermissionCollection getPermissions(CodeSource cs) {
1265	<	return perms;
1266	<	}
1267	<	public PermissionCollection getPermissions(ProtectionDomain pd) {
1268	<	return perms;
1269	<	}
1270	<	public boolean implies(ProtectionDomain pd, Permission p) {
1271	<	return perms.implies(p);
1272	<	}
1273	<	public void refresh() {}
1264	>	public PermissionCollection getPermissions(CodeSource cs) {
1265	>	return perms;
1266	>	}
1267	>	public PermissionCollection getPermissions(ProtectionDomain pd) {
1268	>	return perms;
1269	>	}
1270	>	public boolean implies(ProtectionDomain pd, Permission p) {
1271	>	return perms.implies(p);
1272	>	}
1273	>	public void refresh() {}
1274	>	public String toString() {
1275	>	List<Permission> ps = new ArrayList<>();
1276	>	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1277	>	ps.add(e.nextElement());
1278	>	return "AdjustablePolicy with permissions " + ps;
1279	>	}
1280	>	}
1281	>
1282	>	/**
1283	>	* Returns a policy containing all the permissions we ever need.
1284	>	*/
1285	>	public static Policy permissivePolicy() {
1286	>	return new AdjustablePolicy
1287	>	// Permissions j.u.c. needs directly
1288	>	(new RuntimePermission("modifyThread"),
1289	>	new RuntimePermission("getClassLoader"),
1290	>	new RuntimePermission("setContextClassLoader"),
1291	>	// Permissions needed to change permissions!
1292	>	new SecurityPermission("getPolicy"),
1293	>	new SecurityPermission("setPolicy"),
1294	>	new RuntimePermission("setSecurityManager"),
1295	>	// Permissions needed by the junit test harness
1296	>	new RuntimePermission("accessDeclaredMembers"),
1297	>	new PropertyPermission("*", "read"),
1298	>	new java.io.FilePermission("<<ALL FILES>>", "read"));
1299	>	}
1300	>
1301	>	/**
1302	>	* Sleeps until the given time has elapsed.
1303	>	* Throws AssertionFailedError if interrupted.
1304	>	*/
1305	>	static void sleep(long millis) {
1306	>	try {
1307	>	delay(millis);
1308	>	} catch (InterruptedException fail) {
1309	>	AssertionFailedError afe =
1310	>	new AssertionFailedError("Unexpected InterruptedException");
1311	>	afe.initCause(fail);
1312	>	throw afe;
1313	>	}
1314	>	}
1315	>
1316	>	/**
1317	>	* Spin-waits up to the specified number of milliseconds for the given
1318	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1319	>	*/
1320	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1321	>	long startTime = 0L;
1322	>	for (;;) {
1323	>	Thread.State s = thread.getState();
1324	>	if (s == Thread.State.BLOCKED ||
1325	>	s == Thread.State.WAITING ||
1326	>	s == Thread.State.TIMED_WAITING)
1327	>	return;
1328	>	else if (s == Thread.State.TERMINATED)
1329	>	fail("Unexpected thread termination");
1330	>	else if (startTime == 0L)
1331	>	startTime = System.nanoTime();
1332	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1333	>	threadAssertTrue(thread.isAlive());
1334	>	fail("timed out waiting for thread to enter wait state");
1335	>	}
1336	>	Thread.yield();
1337	>	}
1338	>	}
1339	>
1340	>	/**
1341	>	* Spin-waits up to the specified number of milliseconds for the given
1342	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING,
1343	>	* and additionally satisfy the given condition.
1344	>	*/
1345	>	void waitForThreadToEnterWaitState(
1346	>	Thread thread, long timeoutMillis, Callable<Boolean> waitingForGodot) {
1347	>	long startTime = 0L;
1348	>	for (;;) {
1349	>	Thread.State s = thread.getState();
1350	>	if (s == Thread.State.BLOCKED ||
1351	>	s == Thread.State.WAITING ||
1352	>	s == Thread.State.TIMED_WAITING) {
1353	>	try {
1354	>	if (waitingForGodot.call())
1355	>	return;
1356	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1357	>	}
1358	>	else if (s == Thread.State.TERMINATED)
1359	>	fail("Unexpected thread termination");
1360	>	else if (startTime == 0L)
1361	>	startTime = System.nanoTime();
1362	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1363	>	threadAssertTrue(thread.isAlive());
1364	>	fail("timed out waiting for thread to enter wait state");
1365	>	}
1366	>	Thread.yield();
1367	>	}
1368	>	}
1369	>
1370	>	/**
1371	>	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1372	>	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1373	>	*/
1374	>	void waitForThreadToEnterWaitState(Thread thread) {
1375	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
1376		}
1377
1378	+	/**
1379	+	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1380	+	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING,
1381	+	* and additionally satisfy the given condition.
1382	+	*/
1383	+	void waitForThreadToEnterWaitState(
1384	+	Thread thread, Callable<Boolean> waitingForGodot) {
1385	+	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS, waitingForGodot);
1386	+	}
1387	+
1388	+	/**
1389	+	* Returns the number of milliseconds since time given by
1390	+	* startNanoTime, which must have been previously returned from a
1391	+	* call to {@link System#nanoTime()}.
1392	+	*/
1393	+	static long millisElapsedSince(long startNanoTime) {
1394	+	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1395	+	}
1396	+
1397	+	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1398	+	//         long startTime = System.nanoTime();
1399	+	//         try {
1400	+	//             r.run();
1401	+	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1402	+	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1403	+	//             throw new AssertionFailedError("did not return promptly");
1404	+	//     }
1405	+
1406	+	//     void assertTerminatesPromptly(Runnable r) {
1407	+	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1408	+	//     }
1409	+
1410	+	/**
1411	+	* Checks that timed f.get() returns the expected value, and does not
1412	+	* wait for the timeout to elapse before returning.
1413	+	*/
1414	+	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1415	+	long startTime = System.nanoTime();
1416	+	try {
1417	+	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1418	+	} catch (Throwable fail) { threadUnexpectedException(fail); }
1419	+	if (millisElapsedSince(startTime) > timeoutMillis/2)
1420	+	throw new AssertionFailedError("timed get did not return promptly");
1421	+	}
1422	+
1423	+	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1424	+	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1425	+	}
1426	+
1427	+	/**
1428	+	* Returns a new started daemon Thread running the given runnable.
1429	+	*/
1430	+	Thread newStartedThread(Runnable runnable) {
1431	+	Thread t = new Thread(runnable);
1432	+	t.setDaemon(true);
1433	+	t.start();
1434	+	return t;
1435	+	}
1436	+
1437	+	/**
1438	+	* Waits for the specified time (in milliseconds) for the thread
1439	+	* to terminate (using {@link Thread#join(long)}), else interrupts
1440	+	* the thread (in the hope that it may terminate later) and fails.
1441	+	*/
1442	+	void awaitTermination(Thread t, long timeoutMillis) {
1443	+	try {
1444	+	t.join(timeoutMillis);
1445	+	} catch (InterruptedException fail) {
1446	+	threadUnexpectedException(fail);
1447	+	} finally {
1448	+	if (t.getState() != Thread.State.TERMINATED) {
1449	+	t.interrupt();
1450	+	threadFail("timed out waiting for thread to terminate");
1451	+	}
1452	+	}
1453	+	}
1454	+
1455	+	/**
1456	+	* Waits for LONG_DELAY_MS milliseconds for the thread to
1457	+	* terminate (using {@link Thread#join(long)}), else interrupts
1458	+	* the thread (in the hope that it may terminate later) and fails.
1459	+	*/
1460	+	void awaitTermination(Thread t) {
1461	+	awaitTermination(t, LONG_DELAY_MS);
1462	+	}
1463
1464		// Some convenient Runnable classes
1465
1466	<	abstract class CheckedRunnable implements Runnable {
1467	<	abstract void realRun() throws Throwable;
1466	>	public abstract class CheckedRunnable implements Runnable {
1467	>	protected abstract void realRun() throws Throwable;
1468
1469		public final void run() {
1470		try {
1471		realRun();
1472	+	} catch (Throwable fail) {
1473	+	threadUnexpectedException(fail);
1474	+	}
1475	+	}
1476	+	}
1477	+
1478	+	public abstract class RunnableShouldThrow implements Runnable {
1479	+	protected abstract void realRun() throws Throwable;
1480	+
1481	+	final Class<?> exceptionClass;
1482	+
1483	+	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
1484	+	this.exceptionClass = exceptionClass;
1485	+	}
1486	+
1487	+	public final void run() {
1488	+	try {
1489	+	realRun();
1490	+	threadShouldThrow(exceptionClass.getSimpleName());
1491		} catch (Throwable t) {
1492	<	threadUnexpectedException(t);
1492	>	if (! exceptionClass.isInstance(t))
1493	>	threadUnexpectedException(t);
1494		}
1495		}
1496		}
1497
1498	<	abstract class CheckedInterruptedRunnable implements Runnable {
1499	<	abstract void realRun() throws Throwable;
1498	>	public abstract class ThreadShouldThrow extends Thread {
1499	>	protected abstract void realRun() throws Throwable;
1500	>
1501	>	final Class<?> exceptionClass;
1502	>
1503	>	<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) {
1504	>	this.exceptionClass = exceptionClass;
1505	>	}
1506
1507		public final void run() {
1508		try {
1509		realRun();
1510	<	threadShouldThrow();
420	<	} catch (InterruptedException success) {
1510	>	threadShouldThrow(exceptionClass.getSimpleName());
1511		} catch (Throwable t) {
1512	<	threadUnexpectedException(t);
1512	>	if (! exceptionClass.isInstance(t))
1513	>	threadUnexpectedException(t);
1514		}
1515		}
1516		}
1517
1518	<	abstract class CheckedCallable<T> implements Callable<T> {
1519	<	abstract T realCall() throws Throwable;
1518	>	public abstract class CheckedInterruptedRunnable implements Runnable {
1519	>	protected abstract void realRun() throws Throwable;
1520	>
1521	>	public final void run() {
1522	>	try {
1523	>	realRun();
1524	>	threadShouldThrow("InterruptedException");
1525	>	} catch (InterruptedException success) {
1526	>	threadAssertFalse(Thread.interrupted());
1527	>	} catch (Throwable fail) {
1528	>	threadUnexpectedException(fail);
1529	>	}
1530	>	}
1531	>	}
1532	>
1533	>	public abstract class CheckedCallable<T> implements Callable<T> {
1534	>	protected abstract T realCall() throws Throwable;
1535
1536		public final T call() {
1537		try {
1538		return realCall();
1539	<	} catch (Throwable t) {
1540	<	threadUnexpectedException(t);
1539	>	} catch (Throwable fail) {
1540	>	threadUnexpectedException(fail);
1541		return null;
1542		}
1543		}
1544		}
1545
1546	<	static class NoOpRunnable implements Runnable {
1546	>	public abstract class CheckedInterruptedCallable<T>
1547	>	implements Callable<T> {
1548	>	protected abstract T realCall() throws Throwable;
1549	>
1550	>	public final T call() {
1551	>	try {
1552	>	T result = realCall();
1553	>	threadShouldThrow("InterruptedException");
1554	>	return result;
1555	>	} catch (InterruptedException success) {
1556	>	threadAssertFalse(Thread.interrupted());
1557	>	} catch (Throwable fail) {
1558	>	threadUnexpectedException(fail);
1559	>	}
1560	>	return null;
1561	>	}
1562	>	}
1563	>
1564	>	public static class NoOpRunnable implements Runnable {
1565		public void run() {}
1566		}
1567
1568	<	static class NoOpCallable implements Callable {
1568	>	public static class NoOpCallable implements Callable {
1569		public Object call() { return Boolean.TRUE; }
1570		}
1571
1572	<	static final String TEST_STRING = "a test string";
1572	>	public static final String TEST_STRING = "a test string";
1573	>
1574	>	public static class StringTask implements Callable<String> {
1575	>	final String value;
1576	>	public StringTask() { this(TEST_STRING); }
1577	>	public StringTask(String value) { this.value = value; }
1578	>	public String call() { return value; }
1579	>	}
1580	>
1581	>	public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1582	>	return new CheckedCallable<String>() {
1583	>	protected String realCall() {
1584	>	try {
1585	>	latch.await();
1586	>	} catch (InterruptedException quittingTime) {}
1587	>	return TEST_STRING;
1588	>	}};
1589	>	}
1590	>
1591	>	public Runnable countDowner(final CountDownLatch latch) {
1592	>	return new CheckedRunnable() {
1593	>	public void realRun() throws InterruptedException {
1594	>	latch.countDown();
1595	>	}};
1596	>	}
1597	>
1598	>	class LatchAwaiter extends CheckedRunnable {
1599	>	static final int NEW = 0;
1600	>	static final int RUNNING = 1;
1601	>	static final int DONE = 2;
1602	>	final CountDownLatch latch;
1603	>	int state = NEW;
1604	>	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1605	>	public void realRun() throws InterruptedException {
1606	>	state = 1;
1607	>	await(latch);
1608	>	state = 2;
1609	>	}
1610	>	}
1611	>
1612	>	public LatchAwaiter awaiter(CountDownLatch latch) {
1613	>	return new LatchAwaiter(latch);
1614	>	}
1615
1616	<	static class StringTask implements Callable<String> {
1617	<	public String call() { return TEST_STRING; }
1616	>	public void await(CountDownLatch latch, long timeoutMillis) {
1617	>	try {
1618	>	if (!latch.await(timeoutMillis, MILLISECONDS))
1619	>	fail("timed out waiting for CountDownLatch for "
1620	>	+ (timeoutMillis/1000) + " sec");
1621	>	} catch (Throwable fail) {
1622	>	threadUnexpectedException(fail);
1623	>	}
1624		}
1625
1626	<	static class NPETask implements Callable<String> {
1626	>	public void await(CountDownLatch latch) {
1627	>	await(latch, LONG_DELAY_MS);
1628	>	}
1629	>
1630	>	public void await(Semaphore semaphore) {
1631	>	try {
1632	>	if (!semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS))
1633	>	fail("timed out waiting for Semaphore for "
1634	>	+ (LONG_DELAY_MS/1000) + " sec");
1635	>	} catch (Throwable fail) {
1636	>	threadUnexpectedException(fail);
1637	>	}
1638	>	}
1639	>
1640	>	//     /**
1641	>	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1642	>	//      */
1643	>	//     public void await(AtomicBoolean flag) {
1644	>	//         await(flag, LONG_DELAY_MS);
1645	>	//     }
1646	>
1647	>	//     /**
1648	>	//      * Spin-waits up to the specified timeout until flag becomes true.
1649	>	//      */
1650	>	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1651	>	//         long startTime = System.nanoTime();
1652	>	//         while (!flag.get()) {
1653	>	//             if (millisElapsedSince(startTime) > timeoutMillis)
1654	>	//                 throw new AssertionFailedError("timed out");
1655	>	//             Thread.yield();
1656	>	//         }
1657	>	//     }
1658	>
1659	>	public static class NPETask implements Callable<String> {
1660		public String call() { throw new NullPointerException(); }
1661		}
1662
1663	<	static class CallableOne implements Callable<Integer> {
1663	>	public static class CallableOne implements Callable<Integer> {
1664		public Integer call() { return one; }
1665		}
1666
1667	<	class ShortRunnable extends CheckedRunnable {
1668	<	void realRun() throws Throwable {
1669	<	Thread.sleep(SHORT_DELAY_MS);
1667	>	public class ShortRunnable extends CheckedRunnable {
1668	>	protected void realRun() throws Throwable {
1669	>	delay(SHORT_DELAY_MS);
1670		}
1671		}
1672
1673	<	class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1674	<	void realRun() throws InterruptedException {
1675	<	Thread.sleep(SHORT_DELAY_MS);
1673	>	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1674	>	protected void realRun() throws InterruptedException {
1675	>	delay(SHORT_DELAY_MS);
1676		}
1677		}
1678
1679	<	class SmallRunnable extends CheckedRunnable {
1680	<	void realRun() throws Throwable {
1681	<	Thread.sleep(SMALL_DELAY_MS);
1679	>	public class SmallRunnable extends CheckedRunnable {
1680	>	protected void realRun() throws Throwable {
1681	>	delay(SMALL_DELAY_MS);
1682		}
1683		}
1684
1685	<	class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1686	<	void realRun() {
1685	>	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1686	>	protected void realRun() {
1687		try {
1688	<	Thread.sleep(SMALL_DELAY_MS);
1689	<	}
485	<	catch (InterruptedException ok) {
486	<	}
1688	>	delay(SMALL_DELAY_MS);
1689	>	} catch (InterruptedException ok) {}
1690		}
1691		}
1692
1693	<	class SmallCallable extends CheckedCallable {
1694	<	Object realCall() throws Throwable {
1695	<	Thread.sleep(SMALL_DELAY_MS);
1693	>	public class SmallCallable extends CheckedCallable {
1694	>	protected Object realCall() throws InterruptedException {
1695	>	delay(SMALL_DELAY_MS);
1696		return Boolean.TRUE;
1697		}
1698		}
1699
1700	<	class SmallInterruptedRunnable extends CheckedInterruptedRunnable {
1701	<	void realRun() throws InterruptedException {
1702	<	Thread.sleep(SMALL_DELAY_MS);
1700	>	public class MediumRunnable extends CheckedRunnable {
1701	>	protected void realRun() throws Throwable {
1702	>	delay(MEDIUM_DELAY_MS);
1703		}
1704		}
1705
1706	<	class MediumRunnable extends CheckedRunnable {
1707	<	void realRun() throws Throwable {
1708	<	Thread.sleep(MEDIUM_DELAY_MS);
1706	>	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1707	>	protected void realRun() throws InterruptedException {
1708	>	delay(MEDIUM_DELAY_MS);
1709		}
1710		}
1711
1712	<	class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1713	<	void realRun() throws InterruptedException {
1714	<	Thread.sleep(MEDIUM_DELAY_MS);
1715	<	}
1712	>	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1713	>	return new CheckedRunnable() {
1714	>	protected void realRun() {
1715	>	try {
1716	>	delay(timeoutMillis);
1717	>	} catch (InterruptedException ok) {}
1718	>	}};
1719		}
1720
1721	<	class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1722	<	void realRun() {
1721	>	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1722	>	protected void realRun() {
1723		try {
1724	<	Thread.sleep(MEDIUM_DELAY_MS);
1725	<	}
520	<	catch (InterruptedException ok) {
521	<	}
1724	>	delay(MEDIUM_DELAY_MS);
1725	>	} catch (InterruptedException ok) {}
1726		}
1727		}
1728
1729	<	class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1730	<	void realRun() {
1729	>	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1730	>	protected void realRun() {
1731		try {
1732	<	Thread.sleep(LONG_DELAY_MS);
1733	<	}
530	<	catch (InterruptedException ok) {
531	<	}
1732	>	delay(LONG_DELAY_MS);
1733	>	} catch (InterruptedException ok) {}
1734		}
1735		}
1736
1737		/**
1738		* For use as ThreadFactory in constructors
1739		*/
1740	<	static class SimpleThreadFactory implements ThreadFactory {
1740	>	public static class SimpleThreadFactory implements ThreadFactory {
1741		public Thread newThread(Runnable r) {
1742		return new Thread(r);
1743		}
1744		}
1745
1746	<	static class TrackedShortRunnable implements Runnable {
1747	<	volatile boolean done = false;
1746	>	public interface TrackedRunnable extends Runnable {
1747	>	boolean isDone();
1748	>	}
1749	>
1750	>	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1751	>	return new TrackedRunnable() {
1752	>	private volatile boolean done = false;
1753	>	public boolean isDone() { return done; }
1754	>	public void run() {
1755	>	try {
1756	>	delay(timeoutMillis);
1757	>	done = true;
1758	>	} catch (InterruptedException ok) {}
1759	>	}
1760	>	};
1761	>	}
1762	>
1763	>	public static class TrackedShortRunnable implements Runnable {
1764	>	public volatile boolean done = false;
1765		public void run() {
1766		try {
1767	<	Thread.sleep(SMALL_DELAY_MS);
1767	>	delay(SHORT_DELAY_MS);
1768		done = true;
1769	<	} catch (Exception e) {
551	<	}
1769	>	} catch (InterruptedException ok) {}
1770		}
1771		}
1772
1773	<	static class TrackedMediumRunnable implements Runnable {
1774	<	volatile boolean done = false;
1773	>	public static class TrackedSmallRunnable implements Runnable {
1774	>	public volatile boolean done = false;
1775		public void run() {
1776		try {
1777	<	Thread.sleep(MEDIUM_DELAY_MS);
1777	>	delay(SMALL_DELAY_MS);
1778		done = true;
1779	<	} catch (Exception e) {
562	<	}
1779	>	} catch (InterruptedException ok) {}
1780		}
1781		}
1782
1783	<	static class TrackedLongRunnable implements Runnable {
1784	<	volatile boolean done = false;
1783	>	public static class TrackedMediumRunnable implements Runnable {
1784	>	public volatile boolean done = false;
1785		public void run() {
1786		try {
1787	<	Thread.sleep(LONG_DELAY_MS);
1787	>	delay(MEDIUM_DELAY_MS);
1788		done = true;
1789	<	} catch (Exception e) {
573	<	}
1789	>	} catch (InterruptedException ok) {}
1790		}
1791		}
1792
1793	<	static class TrackedNoOpRunnable implements Runnable {
1794	<	volatile boolean done = false;
1793	>	public static class TrackedLongRunnable implements Runnable {
1794	>	public volatile boolean done = false;
1795	>	public void run() {
1796	>	try {
1797	>	delay(LONG_DELAY_MS);
1798	>	done = true;
1799	>	} catch (InterruptedException ok) {}
1800	>	}
1801	>	}
1802	>
1803	>	public static class TrackedNoOpRunnable implements Runnable {
1804	>	public volatile boolean done = false;
1805		public void run() {
1806		done = true;
1807		}
1808		}
1809
1810	<	static class TrackedCallable implements Callable {
1811	<	volatile boolean done = false;
1810	>	public static class TrackedCallable implements Callable {
1811	>	public volatile boolean done = false;
1812		public Object call() {
1813		try {
1814	<	Thread.sleep(SMALL_DELAY_MS);
1814	>	delay(SMALL_DELAY_MS);
1815		done = true;
1816	<	} catch (Exception e) {
591	<	}
1816	>	} catch (InterruptedException ok) {}
1817		return Boolean.TRUE;
1818		}
1819		}
1820
1821	+	/**
1822	+	* Analog of CheckedRunnable for RecursiveAction
1823	+	*/
1824	+	public abstract class CheckedRecursiveAction extends RecursiveAction {
1825	+	protected abstract void realCompute() throws Throwable;
1826	+
1827	+	@Override protected final void compute() {
1828	+	try {
1829	+	realCompute();
1830	+	} catch (Throwable fail) {
1831	+	threadUnexpectedException(fail);
1832	+	}
1833	+	}
1834	+	}
1835	+
1836	+	/**
1837	+	* Analog of CheckedCallable for RecursiveTask
1838	+	*/
1839	+	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1840	+	protected abstract T realCompute() throws Throwable;
1841	+
1842	+	@Override protected final T compute() {
1843	+	try {
1844	+	return realCompute();
1845	+	} catch (Throwable fail) {
1846	+	threadUnexpectedException(fail);
1847	+	return null;
1848	+	}
1849	+	}
1850	+	}
1851
1852		/**
1853		* For use as RejectedExecutionHandler in constructors
1854		*/
1855	<	static class NoOpREHandler implements RejectedExecutionHandler {
1855	>	public static class NoOpREHandler implements RejectedExecutionHandler {
1856		public void rejectedExecution(Runnable r,
1857		ThreadPoolExecutor executor) {}
1858		}
1859
1860	+	/**
1861	+	* A CyclicBarrier that uses timed await and fails with
1862	+	* AssertionFailedErrors instead of throwing checked exceptions.
1863	+	*/
1864	+	public static class CheckedBarrier extends CyclicBarrier {
1865	+	public CheckedBarrier(int parties) { super(parties); }
1866	+
1867	+	public int await() {
1868	+	try {
1869	+	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1870	+	} catch (TimeoutException timedOut) {
1871	+	throw new AssertionFailedError("timed out");
1872	+	} catch (Exception fail) {
1873	+	AssertionFailedError afe =
1874	+	new AssertionFailedError("Unexpected exception: " + fail);
1875	+	afe.initCause(fail);
1876	+	throw afe;
1877	+	}
1878	+	}
1879	+	}
1880	+
1881	+	void checkEmpty(BlockingQueue q) {
1882	+	try {
1883	+	assertTrue(q.isEmpty());
1884	+	assertEquals(0, q.size());
1885	+	assertNull(q.peek());
1886	+	assertNull(q.poll());
1887	+	assertNull(q.poll(0, MILLISECONDS));
1888	+	assertEquals(q.toString(), "[]");
1889	+	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1890	+	assertFalse(q.iterator().hasNext());
1891	+	try {
1892	+	q.element();
1893	+	shouldThrow();
1894	+	} catch (NoSuchElementException success) {}
1895	+	try {
1896	+	q.iterator().next();
1897	+	shouldThrow();
1898	+	} catch (NoSuchElementException success) {}
1899	+	try {
1900	+	q.remove();
1901	+	shouldThrow();
1902	+	} catch (NoSuchElementException success) {}
1903	+	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1904	+	}
1905	+
1906	+	void assertSerialEquals(Object x, Object y) {
1907	+	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1908	+	}
1909	+
1910	+	void assertNotSerialEquals(Object x, Object y) {
1911	+	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1912	+	}
1913	+
1914	+	byte[] serialBytes(Object o) {
1915	+	try {
1916	+	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1917	+	ObjectOutputStream oos = new ObjectOutputStream(bos);
1918	+	oos.writeObject(o);
1919	+	oos.flush();
1920	+	oos.close();
1921	+	return bos.toByteArray();
1922	+	} catch (Throwable fail) {
1923	+	threadUnexpectedException(fail);
1924	+	return new byte[0];
1925	+	}
1926	+	}
1927	+
1928	+	void assertImmutable(final Object o) {
1929	+	if (o instanceof Collection) {
1930	+	assertThrows(
1931	+	UnsupportedOperationException.class,
1932	+	new Runnable() { public void run() {
1933	+	((Collection) o).add(null);}});
1934	+	}
1935	+	}
1936	+
1937	+	@SuppressWarnings("unchecked")
1938	+	<T> T serialClone(T o) {
1939	+	try {
1940	+	ObjectInputStream ois = new ObjectInputStream
1941	+	(new ByteArrayInputStream(serialBytes(o)));
1942	+	T clone = (T) ois.readObject();
1943	+	if (o == clone) assertImmutable(o);
1944	+	assertSame(o.getClass(), clone.getClass());
1945	+	return clone;
1946	+	} catch (Throwable fail) {
1947	+	threadUnexpectedException(fail);
1948	+	return null;
1949	+	}
1950	+	}
1951	+
1952	+	/**
1953	+	* A version of serialClone that leaves error handling (for
1954	+	* e.g. NotSerializableException) up to the caller.
1955	+	*/
1956	+	@SuppressWarnings("unchecked")
1957	+	<T> T serialClonePossiblyFailing(T o)
1958	+	throws ReflectiveOperationException, java.io.IOException {
1959	+	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1960	+	ObjectOutputStream oos = new ObjectOutputStream(bos);
1961	+	oos.writeObject(o);
1962	+	oos.flush();
1963	+	oos.close();
1964	+	ObjectInputStream ois = new ObjectInputStream
1965	+	(new ByteArrayInputStream(bos.toByteArray()));
1966	+	T clone = (T) ois.readObject();
1967	+	if (o == clone) assertImmutable(o);
1968	+	assertSame(o.getClass(), clone.getClass());
1969	+	return clone;
1970	+	}
1971	+
1972	+	/**
1973	+	* If o implements Cloneable and has a public clone method,
1974	+	* returns a clone of o, else null.
1975	+	*/
1976	+	@SuppressWarnings("unchecked")
1977	+	<T> T cloneableClone(T o) {
1978	+	if (!(o instanceof Cloneable)) return null;
1979	+	final T clone;
1980	+	try {
1981	+	clone = (T) o.getClass().getMethod("clone").invoke(o);
1982	+	} catch (NoSuchMethodException ok) {
1983	+	return null;
1984	+	} catch (ReflectiveOperationException unexpected) {
1985	+	throw new Error(unexpected);
1986	+	}
1987	+	assertNotSame(o, clone); // not 100% guaranteed by spec
1988	+	assertSame(o.getClass(), clone.getClass());
1989	+	return clone;
1990	+	}
1991	+
1992	+	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1993	+	Runnable... throwingActions) {
1994	+	for (Runnable throwingAction : throwingActions) {
1995	+	boolean threw = false;
1996	+	try { throwingAction.run(); }
1997	+	catch (Throwable t) {
1998	+	threw = true;
1999	+	if (!expectedExceptionClass.isInstance(t)) {
2000	+	AssertionFailedError afe =
2001	+	new AssertionFailedError
2002	+	("Expected " + expectedExceptionClass.getName() +
2003	+	", got " + t.getClass().getName());
2004	+	afe.initCause(t);
2005	+	threadUnexpectedException(afe);
2006	+	}
2007	+	}
2008	+	if (!threw)
2009	+	shouldThrow(expectedExceptionClass.getName());
2010	+	}
2011	+	}
2012	+
2013	+	public void assertIteratorExhausted(Iterator<?> it) {
2014	+	try {
2015	+	it.next();
2016	+	shouldThrow();
2017	+	} catch (NoSuchElementException success) {}
2018	+	assertFalse(it.hasNext());
2019	+	}
2020	+
2021	+	public <T> Callable<T> callableThrowing(final Exception ex) {
2022	+	return new Callable<T>() { public T call() throws Exception { throw ex; }};
2023	+	}
2024	+
2025	+	public Runnable runnableThrowing(final RuntimeException ex) {
2026	+	return new Runnable() { public void run() { throw ex; }};
2027	+	}
2028	+
2029	+	/** A reusable thread pool to be shared by tests. */
2030	+	static final ExecutorService cachedThreadPool =
2031	+	new ThreadPoolExecutor(0, Integer.MAX_VALUE,
2032	+	1000L, MILLISECONDS,
2033	+	new SynchronousQueue<Runnable>());
2034	+
2035	+	static <T> void shuffle(T[] array) {
2036	+	Collections.shuffle(Arrays.asList(array), ThreadLocalRandom.current());
2037	+	}
2038		}

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