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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 1.266 by jsr166, Sat Sep 7 17:40:05 2019 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.Deque;
70	>	import java.util.Enumeration;
71	>	import java.util.HashSet;
72	>	import java.util.Iterator;
73	>	import java.util.List;
74	>	import java.util.NoSuchElementException;
75	>	import java.util.PropertyPermission;
76	>	import java.util.Set;
77	>	import java.util.concurrent.BlockingQueue;
78	>	import java.util.concurrent.Callable;
79	>	import java.util.concurrent.CountDownLatch;
80	>	import java.util.concurrent.CyclicBarrier;
81	>	import java.util.concurrent.ExecutionException;
82	>	import java.util.concurrent.Executor;
83	>	import java.util.concurrent.Executors;
84	>	import java.util.concurrent.ExecutorService;
85	>	import java.util.concurrent.ForkJoinPool;
86	>	import java.util.concurrent.Future;
87	>	import java.util.concurrent.FutureTask;
88	>	import java.util.concurrent.RecursiveAction;
89	>	import java.util.concurrent.RecursiveTask;
90	>	import java.util.concurrent.RejectedExecutionException;
91	>	import java.util.concurrent.RejectedExecutionHandler;
92	>	import java.util.concurrent.Semaphore;
93	>	import java.util.concurrent.ScheduledExecutorService;
94	>	import java.util.concurrent.ScheduledFuture;
95	>	import java.util.concurrent.SynchronousQueue;
96	>	import java.util.concurrent.ThreadFactory;
97	>	import java.util.concurrent.ThreadLocalRandom;
98	>	import java.util.concurrent.ThreadPoolExecutor;
99	>	import java.util.concurrent.TimeUnit;
100	>	import java.util.concurrent.TimeoutException;
101	>	import java.util.concurrent.atomic.AtomicBoolean;
102	>	import java.util.concurrent.atomic.AtomicReference;
103	>	import java.util.regex.Pattern;
104	>
105	>	import junit.framework.Test;
106	>	import junit.framework.TestCase;
107	>	import junit.framework.TestResult;
108	>	import junit.framework.TestSuite;
109
110		/**
111		* Base class for JSR166 Junit TCK tests.  Defines some constants,
#	Line 23 | Line 117 | import java.security.*;
117		*
118		* <ol>
119		*
120	<	* <li> All assertions in code running in generated threads must use
121	<	* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
122	<	* #threadAssertEquals}, or {@link #threadAssertNull}, (not
123	<	* <tt>fail</tt>, <tt>assertTrue</tt>, etc.) It is OK (but not
124	<	* particularly recommended) for other code to use these forms too.
125	<	* Only the most typically used JUnit assertion methods are defined
126	<	* this way, but enough to live with.</li>
120	>	* <li>All code not running in the main test thread (manually spawned threads
121	>	* or the common fork join pool) must be checked for failure (and completion!).
122	>	* Mechanisms that can be used to ensure this are:
123	>	*   <ol>
124	>	*   <li>Signalling via a synchronizer like AtomicInteger or CountDownLatch
125	>	*    that the task completed normally, which is checked before returning from
126	>	*    the test method in the main thread.
127	>	*   <li>Using the forms {@link #threadFail}, {@link #threadAssertTrue},
128	>	*    or {@link #threadAssertNull}, (not {@code fail}, {@code assertTrue}, etc.)
129	>	*    Only the most typically used JUnit assertion methods are defined
130	>	*    this way, but enough to live with.
131	>	*   <li>Recording failure explicitly using {@link #threadUnexpectedException}
132	>	*    or {@link #threadRecordFailure}.
133	>	*   <li>Using a wrapper like CheckedRunnable that uses one the mechanisms above.
134	>	*   </ol>
135		*
136	<	* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
137	<	* to invoke <tt>super.setUp</tt> and <tt>super.tearDown</tt> within
136	>	* <li>If you override {@link #setUp} or {@link #tearDown}, make sure
137	>	* to invoke {@code super.setUp} and {@code super.tearDown} within
138		* them. These methods are used to clear and check for thread
139	<	* assertion failures.</li>
139	>	* assertion failures.
140		*
141	<	* <li>All delays and timeouts must use one of the constants <tt>
142	<	* SHORT_DELAY_MS</tt>, <tt> SMALL_DELAY_MS</tt>, <tt> MEDIUM_DELAY_MS</tt>,
143	<	* <tt> LONG_DELAY_MS</tt>. The idea here is that a SHORT is always
141	>	* <li>All delays and timeouts must use one of the constants {@code
142	>	* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
143	>	* {@code LONG_DELAY_MS}. The idea here is that a SHORT is always
144		* discriminable from zero time, and always allows enough time for the
145		* small amounts of computation (creating a thread, calling a few
146		* methods, etc) needed to reach a timeout point. Similarly, a SMALL
147		* is always discriminable as larger than SHORT and smaller than
148		* MEDIUM.  And so on. These constants are set to conservative values,
149		* but even so, if there is ever any doubt, they can all be increased
150	<	* in one spot to rerun tests on slower platforms.</li>
150	>	* in one spot to rerun tests on slower platforms.
151		*
152	<	* <li> All threads generated must be joined inside each test case
153	<	* method (or <tt>fail</tt> to do so) before returning from the
154	<	* method. The <tt> joinPool</tt> method can be used to do this when
155	<	* using Executors.</li>
152	>	* <li>All threads generated must be joined inside each test case
153	>	* method (or {@code fail} to do so) before returning from the
154	>	* method. The {@code joinPool} method can be used to do this when
155	>	* using Executors.
156		*
157		* </ol>
158		*
159	<	* <p> <b>Other notes</b>
159	>	* <p><b>Other notes</b>
160		* <ul>
161		*
162	<	* <li> Usually, there is one testcase method per JSR166 method
162	>	* <li>Usually, there is one testcase method per JSR166 method
163		* covering "normal" operation, and then as many exception-testing
164		* methods as there are exceptions the method can throw. Sometimes
165		* there are multiple tests per JSR166 method when the different
166		* "normal" behaviors differ significantly. And sometimes testcases
167	<	* cover multiple methods when they cannot be tested in
66	<	* isolation.</li>
167	>	* cover multiple methods when they cannot be tested in isolation.
168		*
169	<	* <li> The documentation style for testcases is to provide as javadoc
169	>	* <li>The documentation style for testcases is to provide as javadoc
170		* a simple sentence or two describing the property that the testcase
171		* method purports to test. The javadocs do not say anything about how
172	<	* the property is tested. To find out, read the code.</li>
172	>	* the property is tested. To find out, read the code.
173		*
174	<	* <li> These tests are "conformance tests", and do not attempt to
174	>	* <li>These tests are "conformance tests", and do not attempt to
175		* test throughput, latency, scalability or other performance factors
176		* (see the separate "jtreg" tests for a set intended to check these
177		* for the most central aspects of functionality.) So, most tests use
178		* the smallest sensible numbers of threads, collection sizes, etc
179	<	* needed to check basic conformance.</li>
179	>	* needed to check basic conformance.
180		*
181		* <li>The test classes currently do not declare inclusion in
182		* any particular package to simplify things for people integrating
183	<	* them in TCK test suites.</li>
183	>	* them in TCK test suites.
184		*
185	<	* <li> As a convenience, the <tt>main</tt> of this class (JSR166TestCase)
186	<	* runs all JSR166 unit tests.</li>
185	>	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
186	>	* runs all JSR166 unit tests.
187		*
188		* </ul>
189		*/
190		public class JSR166TestCase extends TestCase {
191	+	private static final boolean useSecurityManager =
192	+	Boolean.getBoolean("jsr166.useSecurityManager");
193	+
194	+	protected static final boolean expensiveTests =
195	+	Boolean.getBoolean("jsr166.expensiveTests");
196	+
197		/**
198	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
198	>	* If true, also run tests that are not part of the official tck
199	>	* because they test unspecified implementation details.
200		*/
201	<	public static void main (String[] args) {
202	<	int iters = 1;
203	<	if (args.length > 0)
204	<	iters = Integer.parseInt(args[0]);
205	<	Test s = suite();
206	<	for (int i = 0; i < iters; ++i) {
207	<	junit.textui.TestRunner.run (s);
208	<	System.gc();
209	<	System.runFinalization();
201	>	protected static final boolean testImplementationDetails =
202	>	Boolean.getBoolean("jsr166.testImplementationDetails");
203	>
204	>	/**
205	>	* If true, report on stdout all "slow" tests, that is, ones that
206	>	* take more than profileThreshold milliseconds to execute.
207	>	*/
208	>	private static final boolean profileTests =
209	>	Boolean.getBoolean("jsr166.profileTests");
210	>
211	>	/**
212	>	* The number of milliseconds that tests are permitted for
213	>	* execution without being reported, when profileTests is set.
214	>	*/
215	>	private static final long profileThreshold =
216	>	Long.getLong("jsr166.profileThreshold", 100);
217	>
218	>	/**
219	>	* The number of repetitions per test (for tickling rare bugs).
220	>	*/
221	>	private static final int runsPerTest =
222	>	Integer.getInteger("jsr166.runsPerTest", 1);
223	>
224	>	/**
225	>	* The number of repetitions of the test suite (for finding leaks?).
226	>	*/
227	>	private static final int suiteRuns =
228	>	Integer.getInteger("jsr166.suiteRuns", 1);
229	>
230	>	/**
231	>	* Returns the value of the system property, or NaN if not defined.
232	>	*/
233	>	private static float systemPropertyValue(String name) {
234	>	String floatString = System.getProperty(name);
235	>	if (floatString == null)
236	>	return Float.NaN;
237	>	try {
238	>	return Float.parseFloat(floatString);
239	>	} catch (NumberFormatException ex) {
240	>	throw new IllegalArgumentException(
241	>	String.format("Bad float value in system property %s=%s",
242	>	name, floatString));
243	>	}
244	>	}
245	>
246	>	/**
247	>	* The scaling factor to apply to standard delays used in tests.
248	>	* May be initialized from any of:
249	>	* - the "jsr166.delay.factor" system property
250	>	* - the "test.timeout.factor" system property (as used by jtreg)
251	>	*   See: http://openjdk.java.net/jtreg/tag-spec.html
252	>	* - hard-coded fuzz factor when using a known slowpoke VM
253	>	*/
254	>	private static final float delayFactor = delayFactor();
255	>
256	>	private static float delayFactor() {
257	>	float x;
258	>	if (!Float.isNaN(x = systemPropertyValue("jsr166.delay.factor")))
259	>	return x;
260	>	if (!Float.isNaN(x = systemPropertyValue("test.timeout.factor")))
261	>	return x;
262	>	String prop = System.getProperty("java.vm.version");
263	>	if (prop != null && prop.matches(".*debug.*"))
264	>	return 4.0f; // How much slower is fastdebug than product?!
265	>	return 1.0f;
266	>	}
267	>
268	>	public JSR166TestCase() { super(); }
269	>	public JSR166TestCase(String name) { super(name); }
270	>
271	>	/**
272	>	* A filter for tests to run, matching strings of the form
273	>	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
274	>	* Usefully combined with jsr166.runsPerTest.
275	>	*/
276	>	private static final Pattern methodFilter = methodFilter();
277	>
278	>	private static Pattern methodFilter() {
279	>	String regex = System.getProperty("jsr166.methodFilter");
280	>	return (regex == null) ? null : Pattern.compile(regex);
281	>	}
282	>
283	>	// Instrumentation to debug very rare, but very annoying hung test runs.
284	>	static volatile TestCase currentTestCase;
285	>	// static volatile int currentRun = 0;
286	>	static {
287	>	Runnable wedgedTestDetector = new Runnable() { public void run() {
288	>	// Avoid spurious reports with enormous runsPerTest.
289	>	// A single test case run should never take more than 1 second.
290	>	// But let's cap it at the high end too ...
291	>	final int timeoutMinutesMin = Math.max(runsPerTest / 60, 1)
292	>	* Math.max((int) delayFactor, 1);
293	>	final int timeoutMinutes = Math.min(15, timeoutMinutesMin);
294	>	for (TestCase lastTestCase = currentTestCase;;) {
295	>	try { MINUTES.sleep(timeoutMinutes); }
296	>	catch (InterruptedException unexpected) { break; }
297	>	if (lastTestCase == currentTestCase) {
298	>	System.err.printf(
299	>	"Looks like we're stuck running test: %s%n",
300	>	lastTestCase);
301	>	//                     System.err.printf(
302	>	//                         "Looks like we're stuck running test: %s (%d/%d)%n",
303	>	//                         lastTestCase, currentRun, runsPerTest);
304	>	//                     System.err.println("availableProcessors=" +
305	>	//                         Runtime.getRuntime().availableProcessors());
306	>	//                     System.err.printf("cpu model = %s%n", cpuModel());
307	>	dumpTestThreads();
308	>	// one stack dump is probably enough; more would be spam
309	>	break;
310	>	}
311	>	lastTestCase = currentTestCase;
312	>	}}};
313	>	Thread thread = new Thread(wedgedTestDetector, "WedgedTestDetector");
314	>	thread.setDaemon(true);
315	>	thread.start();
316	>	}
317	>
318	>	//     public static String cpuModel() {
319	>	//         try {
320	>	//             java.util.regex.Matcher matcher
321	>	//               = Pattern.compile("model name\\s*: (.*)")
322	>	//                 .matcher(new String(
323	>	//                     java.nio.file.Files.readAllBytes(
324	>	//                         java.nio.file.Paths.get("/proc/cpuinfo")), "UTF-8"));
325	>	//             matcher.find();
326	>	//             return matcher.group(1);
327	>	//         } catch (Exception ex) { return null; }
328	>	//     }
329	>
330	>	public void runBare() throws Throwable {
331	>	currentTestCase = this;
332	>	if (methodFilter == null
333	>	|| methodFilter.matcher(toString()).find())
334	>	super.runBare();
335	>	}
336	>
337	>	protected void runTest() throws Throwable {
338	>	for (int i = 0; i < runsPerTest; i++) {
339	>	// currentRun = i;
340	>	if (profileTests)
341	>	runTestProfiled();
342	>	else
343	>	super.runTest();
344	>	}
345	>	}
346	>
347	>	protected void runTestProfiled() throws Throwable {
348	>	for (int i = 0; i < 2; i++) {
349	>	long startTime = System.nanoTime();
350	>	super.runTest();
351	>	long elapsedMillis = millisElapsedSince(startTime);
352	>	if (elapsedMillis < profileThreshold)
353	>	break;
354	>	// Never report first run of any test; treat it as a
355	>	// warmup run, notably to trigger all needed classloading,
356	>	if (i > 0)
357	>	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
358	>	}
359	>	}
360	>
361	>	/**
362	>	* Runs all JSR166 unit tests using junit.textui.TestRunner.
363	>	*/
364	>	public static void main(String[] args) {
365	>	main(suite(), args);
366	>	}
367	>
368	>	static class PithyResultPrinter extends junit.textui.ResultPrinter {
369	>	PithyResultPrinter(java.io.PrintStream writer) { super(writer); }
370	>	long runTime;
371	>	public void startTest(Test test) {}
372	>	protected void printHeader(long runTime) {
373	>	this.runTime = runTime; // defer printing for later
374	>	}
375	>	protected void printFooter(TestResult result) {
376	>	if (result.wasSuccessful()) {
377	>	getWriter().println("OK (" + result.runCount() + " tests)"
378	>	+ "  Time: " + elapsedTimeAsString(runTime));
379	>	} else {
380	>	getWriter().println("Time: " + elapsedTimeAsString(runTime));
381	>	super.printFooter(result);
382	>	}
383		}
103	–	System.exit(0);
384		}
385
386		/**
387	<	* Collects all JSR166 unit tests as one suite
387	>	* Returns a TestRunner that doesn't bother with unnecessary
388	>	* fluff, like printing a "." for each test case.
389		*/
390	<	public static Test suite ( ) {
391	<	TestSuite suite = new TestSuite("JSR166 Unit Tests");
390	>	static junit.textui.TestRunner newPithyTestRunner() {
391	>	junit.textui.TestRunner runner = new junit.textui.TestRunner();
392	>	runner.setPrinter(new PithyResultPrinter(System.out));
393	>	return runner;
394	>	}
395
396	<	suite.addTest(new TestSuite(ForkJoinPoolTest.class));
397	<	suite.addTest(new TestSuite(ForkJoinTaskTest.class));
398	<	suite.addTest(new TestSuite(RecursiveActionTest.class));
399	<	suite.addTest(new TestSuite(RecursiveTaskTest.class));
400	<	suite.addTest(new TestSuite(LinkedTransferQueueTest.class));
401	<	suite.addTest(new TestSuite(PhaserTest.class));
402	<	suite.addTest(new TestSuite(ThreadLocalRandomTest.class));
403	<	suite.addTest(new TestSuite(AbstractExecutorServiceTest.class));
404	<	suite.addTest(new TestSuite(AbstractQueueTest.class));
405	<	suite.addTest(new TestSuite(AbstractQueuedSynchronizerTest.class));
406	<	suite.addTest(new TestSuite(AbstractQueuedLongSynchronizerTest.class));
407	<	suite.addTest(new TestSuite(ArrayBlockingQueueTest.class));
408	<	suite.addTest(new TestSuite(ArrayDequeTest.class));
409	<	suite.addTest(new TestSuite(AtomicBooleanTest.class));
410	<	suite.addTest(new TestSuite(AtomicIntegerArrayTest.class));
411	<	suite.addTest(new TestSuite(AtomicIntegerFieldUpdaterTest.class));
412	<	suite.addTest(new TestSuite(AtomicIntegerTest.class));
413	<	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));
396	>	/**
397	>	* Runs all unit tests in the given test suite.
398	>	* Actual behavior influenced by jsr166.* system properties.
399	>	*/
400	>	static void main(Test suite, String[] args) {
401	>	if (useSecurityManager) {
402	>	System.err.println("Setting a permissive security manager");
403	>	Policy.setPolicy(permissivePolicy());
404	>	System.setSecurityManager(new SecurityManager());
405	>	}
406	>	for (int i = 0; i < suiteRuns; i++) {
407	>	TestResult result = newPithyTestRunner().doRun(suite);
408	>	if (!result.wasSuccessful())
409	>	System.exit(1);
410	>	System.gc();
411	>	System.runFinalization();
412	>	}
413	>	}
414
415	+	public static TestSuite newTestSuite(Object... suiteOrClasses) {
416	+	TestSuite suite = new TestSuite();
417	+	for (Object suiteOrClass : suiteOrClasses) {
418	+	if (suiteOrClass instanceof TestSuite)
419	+	suite.addTest((TestSuite) suiteOrClass);
420	+	else if (suiteOrClass instanceof Class)
421	+	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
422	+	else
423	+	throw new ClassCastException("not a test suite or class");
424	+	}
425		return suite;
426		}
427
428	+	public static void addNamedTestClasses(TestSuite suite,
429	+	String... testClassNames) {
430	+	for (String testClassName : testClassNames) {
431	+	try {
432	+	Class<?> testClass = Class.forName(testClassName);
433	+	Method m = testClass.getDeclaredMethod("suite");
434	+	suite.addTest(newTestSuite((Test)m.invoke(null)));
435	+	} catch (ReflectiveOperationException e) {
436	+	throw new AssertionError("Missing test class", e);
437	+	}
438	+	}
439	+	}
440	+
441	+	public static final double JAVA_CLASS_VERSION;
442	+	public static final String JAVA_SPECIFICATION_VERSION;
443	+	static {
444	+	try {
445	+	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
446	+	new java.security.PrivilegedAction<Double>() {
447	+	public Double run() {
448	+	return Double.valueOf(System.getProperty("java.class.version"));}});
449	+	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
450	+	new java.security.PrivilegedAction<String>() {
451	+	public String run() {
452	+	return System.getProperty("java.specification.version");}});
453	+	} catch (Throwable t) {
454	+	throw new Error(t);
455	+	}
456	+	}
457	+
458	+	public static boolean atLeastJava6()  { return JAVA_CLASS_VERSION >= 50.0; }
459	+	public static boolean atLeastJava7()  { return JAVA_CLASS_VERSION >= 51.0; }
460	+	public static boolean atLeastJava8()  { return JAVA_CLASS_VERSION >= 52.0; }
461	+	public static boolean atLeastJava9()  { return JAVA_CLASS_VERSION >= 53.0; }
462	+	public static boolean atLeastJava10() { return JAVA_CLASS_VERSION >= 54.0; }
463	+	public static boolean atLeastJava11() { return JAVA_CLASS_VERSION >= 55.0; }
464	+	public static boolean atLeastJava12() { return JAVA_CLASS_VERSION >= 56.0; }
465	+	public static boolean atLeastJava13() { return JAVA_CLASS_VERSION >= 57.0; }
466	+	public static boolean atLeastJava14() { return JAVA_CLASS_VERSION >= 58.0; }
467	+	public static boolean atLeastJava15() { return JAVA_CLASS_VERSION >= 59.0; }
468	+	public static boolean atLeastJava16() { return JAVA_CLASS_VERSION >= 60.0; }
469	+	public static boolean atLeastJava17() { return JAVA_CLASS_VERSION >= 61.0; }
470	+
471	+	/**
472	+	* Collects all JSR166 unit tests as one suite.
473	+	*/
474	+	public static Test suite() {
475	+	// Java7+ test classes
476	+	TestSuite suite = newTestSuite(
477	+	ForkJoinPoolTest.suite(),
478	+	ForkJoinTaskTest.suite(),
479	+	RecursiveActionTest.suite(),
480	+	RecursiveTaskTest.suite(),
481	+	LinkedTransferQueueTest.suite(),
482	+	PhaserTest.suite(),
483	+	ThreadLocalRandomTest.suite(),
484	+	AbstractExecutorServiceTest.suite(),
485	+	AbstractQueueTest.suite(),
486	+	AbstractQueuedSynchronizerTest.suite(),
487	+	AbstractQueuedLongSynchronizerTest.suite(),
488	+	ArrayBlockingQueueTest.suite(),
489	+	ArrayDequeTest.suite(),
490	+	ArrayListTest.suite(),
491	+	AtomicBooleanTest.suite(),
492	+	AtomicIntegerArrayTest.suite(),
493	+	AtomicIntegerFieldUpdaterTest.suite(),
494	+	AtomicIntegerTest.suite(),
495	+	AtomicLongArrayTest.suite(),
496	+	AtomicLongFieldUpdaterTest.suite(),
497	+	AtomicLongTest.suite(),
498	+	AtomicMarkableReferenceTest.suite(),
499	+	AtomicReferenceArrayTest.suite(),
500	+	AtomicReferenceFieldUpdaterTest.suite(),
501	+	AtomicReferenceTest.suite(),
502	+	AtomicStampedReferenceTest.suite(),
503	+	ConcurrentHashMapTest.suite(),
504	+	ConcurrentLinkedDequeTest.suite(),
505	+	ConcurrentLinkedQueueTest.suite(),
506	+	ConcurrentSkipListMapTest.suite(),
507	+	ConcurrentSkipListSubMapTest.suite(),
508	+	ConcurrentSkipListSetTest.suite(),
509	+	ConcurrentSkipListSubSetTest.suite(),
510	+	CopyOnWriteArrayListTest.suite(),
511	+	CopyOnWriteArraySetTest.suite(),
512	+	CountDownLatchTest.suite(),
513	+	CountedCompleterTest.suite(),
514	+	CyclicBarrierTest.suite(),
515	+	DelayQueueTest.suite(),
516	+	EntryTest.suite(),
517	+	ExchangerTest.suite(),
518	+	ExecutorsTest.suite(),
519	+	ExecutorCompletionServiceTest.suite(),
520	+	FutureTaskTest.suite(),
521	+	HashtableTest.suite(),
522	+	LinkedBlockingDequeTest.suite(),
523	+	LinkedBlockingQueueTest.suite(),
524	+	LinkedListTest.suite(),
525	+	LockSupportTest.suite(),
526	+	PriorityBlockingQueueTest.suite(),
527	+	PriorityQueueTest.suite(),
528	+	ReentrantLockTest.suite(),
529	+	ReentrantReadWriteLockTest.suite(),
530	+	ScheduledExecutorTest.suite(),
531	+	ScheduledExecutorSubclassTest.suite(),
532	+	SemaphoreTest.suite(),
533	+	SynchronousQueueTest.suite(),
534	+	SystemTest.suite(),
535	+	ThreadLocalTest.suite(),
536	+	ThreadPoolExecutorTest.suite(),
537	+	ThreadPoolExecutorSubclassTest.suite(),
538	+	ThreadTest.suite(),
539	+	TimeUnitTest.suite(),
540	+	TreeMapTest.suite(),
541	+	TreeSetTest.suite(),
542	+	TreeSubMapTest.suite(),
543	+	TreeSubSetTest.suite(),
544	+	VectorTest.suite());
545	+
546	+	// Java8+ test classes
547	+	if (atLeastJava8()) {
548	+	String[] java8TestClassNames = {
549	+	"ArrayDeque8Test",
550	+	"Atomic8Test",
551	+	"CompletableFutureTest",
552	+	"ConcurrentHashMap8Test",
553	+	"CountedCompleter8Test",
554	+	"DoubleAccumulatorTest",
555	+	"DoubleAdderTest",
556	+	"ForkJoinPool8Test",
557	+	"ForkJoinTask8Test",
558	+	"HashMapTest",
559	+	"LinkedBlockingDeque8Test",
560	+	"LinkedBlockingQueue8Test",
561	+	"LinkedHashMapTest",
562	+	"LongAccumulatorTest",
563	+	"LongAdderTest",
564	+	"SplittableRandomTest",
565	+	"StampedLockTest",
566	+	"SubmissionPublisherTest",
567	+	"ThreadLocalRandom8Test",
568	+	"TimeUnit8Test",
569	+	};
570	+	addNamedTestClasses(suite, java8TestClassNames);
571	+	}
572	+
573	+	// Java9+ test classes
574	+	if (atLeastJava9()) {
575	+	String[] java9TestClassNames = {
576	+	"AtomicBoolean9Test",
577	+	"AtomicInteger9Test",
578	+	"AtomicIntegerArray9Test",
579	+	"AtomicLong9Test",
580	+	"AtomicLongArray9Test",
581	+	"AtomicReference9Test",
582	+	"AtomicReferenceArray9Test",
583	+	"ExecutorCompletionService9Test",
584	+	"ForkJoinPool9Test",
585	+	};
586	+	addNamedTestClasses(suite, java9TestClassNames);
587	+	}
588	+
589	+	return suite;
590	+	}
591	+
592	+	/** Returns list of junit-style test method names in given class. */
593	+	public static ArrayList<String> testMethodNames(Class<?> testClass) {
594	+	Method[] methods = testClass.getDeclaredMethods();
595	+	ArrayList<String> names = new ArrayList<>(methods.length);
596	+	for (Method method : methods) {
597	+	if (method.getName().startsWith("test")
598	+	&& Modifier.isPublic(method.getModifiers())
599	+	// method.getParameterCount() requires jdk8+
600	+	&& method.getParameterTypes().length == 0) {
601	+	names.add(method.getName());
602	+	}
603	+	}
604	+	return names;
605	+	}
606	+
607	+	/**
608	+	* Returns junit-style testSuite for the given test class, but
609	+	* parameterized by passing extra data to each test.
610	+	*/
611	+	public static <ExtraData> Test parameterizedTestSuite
612	+	(Class<? extends JSR166TestCase> testClass,
613	+	Class<ExtraData> dataClass,
614	+	ExtraData data) {
615	+	try {
616	+	TestSuite suite = new TestSuite();
617	+	Constructor c =
618	+	testClass.getDeclaredConstructor(dataClass, String.class);
619	+	for (String methodName : testMethodNames(testClass))
620	+	suite.addTest((Test) c.newInstance(data, methodName));
621	+	return suite;
622	+	} catch (ReflectiveOperationException e) {
623	+	throw new AssertionError(e);
624	+	}
625	+	}
626	+
627	+	/**
628	+	* Returns junit-style testSuite for the jdk8 extension of the
629	+	* given test class, but parameterized by passing extra data to
630	+	* each test.  Uses reflection to allow compilation in jdk7.
631	+	*/
632	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
633	+	(Class<? extends JSR166TestCase> testClass,
634	+	Class<ExtraData> dataClass,
635	+	ExtraData data) {
636	+	if (atLeastJava8()) {
637	+	String name = testClass.getName();
638	+	String name8 = name.replaceAll("Test$", "8Test");
639	+	if (name.equals(name8)) throw new AssertionError(name);
640	+	try {
641	+	return (Test)
642	+	Class.forName(name8)
643	+	.getMethod("testSuite", dataClass)
644	+	.invoke(null, data);
645	+	} catch (ReflectiveOperationException e) {
646	+	throw new AssertionError(e);
647	+	}
648	+	} else {
649	+	return new TestSuite();
650	+	}
651	+	}
652	+
653	+	// Delays for timing-dependent tests, in milliseconds.
654
655		public static long SHORT_DELAY_MS;
656		public static long SMALL_DELAY_MS;
657		public static long MEDIUM_DELAY_MS;
658		public static long LONG_DELAY_MS;
659
660	+	/**
661	+	* A delay significantly longer than LONG_DELAY_MS.
662	+	* Use this in a thread that is waited for via awaitTermination(Thread).
663	+	*/
664	+	public static long LONGER_DELAY_MS;
665	+
666	+	private static final long RANDOM_TIMEOUT;
667	+	private static final long RANDOM_EXPIRED_TIMEOUT;
668	+	private static final TimeUnit RANDOM_TIMEUNIT;
669	+	static {
670	+	ThreadLocalRandom rnd = ThreadLocalRandom.current();
671	+	long[] timeouts = { Long.MIN_VALUE, -1, 0, 1, Long.MAX_VALUE };
672	+	RANDOM_TIMEOUT = timeouts[rnd.nextInt(timeouts.length)];
673	+	RANDOM_EXPIRED_TIMEOUT = timeouts[rnd.nextInt(3)];
674	+	TimeUnit[] timeUnits = TimeUnit.values();
675	+	RANDOM_TIMEUNIT = timeUnits[rnd.nextInt(timeUnits.length)];
676	+	}
677
678		/**
679	<	* Returns the shortest timed delay. This could
188	<	* be reimplemented to use for example a Property.
679	>	* Returns a timeout for use when any value at all will do.
680		*/
681	<	protected long getShortDelay() {
682	<	return 50;
681	>	static long randomTimeout() { return RANDOM_TIMEOUT; }
682	>
683	>	/**
684	>	* Returns a timeout that means "no waiting", i.e. not positive.
685	>	*/
686	>	static long randomExpiredTimeout() { return RANDOM_EXPIRED_TIMEOUT; }
687	>
688	>	/**
689	>	* Returns a random non-null TimeUnit.
690	>	*/
691	>	static TimeUnit randomTimeUnit() { return RANDOM_TIMEUNIT; }
692	>
693	>	/**
694	>	* Returns a random boolean; a "coin flip".
695	>	*/
696	>	static boolean randomBoolean() {
697	>	return ThreadLocalRandom.current().nextBoolean();
698		}
699
700	+	/**
701	+	* Returns a random element from given choices.
702	+	*/
703	+	<T> T chooseRandomly(T... choices) {
704	+	return choices[ThreadLocalRandom.current().nextInt(choices.length)];
705	+	}
706	+
707	+	/**
708	+	* Returns the shortest timed delay. This can be scaled up for
709	+	* slow machines using the jsr166.delay.factor system property,
710	+	* or via jtreg's -timeoutFactor: flag.
711	+	* http://openjdk.java.net/jtreg/command-help.html
712	+	*/
713	+	protected long getShortDelay() {
714	+	return (long) (50 * delayFactor);
715	+	}
716
717		/**
718		* Sets delays as multiples of SHORT_DELAY.
719		*/
720	<	protected  void setDelays() {
720	>	protected void setDelays() {
721		SHORT_DELAY_MS = getShortDelay();
722	<	SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
722	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
723		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
724	<	LONG_DELAY_MS = SHORT_DELAY_MS * 50;
724	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
725	>	LONGER_DELAY_MS = 2 * LONG_DELAY_MS;
726	>	}
727	>
728	>	private static final long TIMEOUT_DELAY_MS
729	>	= (long) (12.0 * Math.cbrt(delayFactor));
730	>
731	>	/**
732	>	* Returns a timeout in milliseconds to be used in tests that verify
733	>	* that operations block or time out.  We want this to be longer
734	>	* than the OS scheduling quantum, but not too long, so don't scale
735	>	* linearly with delayFactor; we use "crazy" cube root instead.
736	>	*/
737	>	static long timeoutMillis() {
738	>	return TIMEOUT_DELAY_MS;
739	>	}
740	>
741	>	/**
742	>	* Returns a new Date instance representing a time at least
743	>	* delayMillis milliseconds in the future.
744	>	*/
745	>	Date delayedDate(long delayMillis) {
746	>	// Add 1 because currentTimeMillis is known to round into the past.
747	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
748		}
749
750		/**
751	<	* Flag set true if any threadAssert methods fail
751	>	* The first exception encountered if any threadAssertXXX method fails.
752		*/
753	<	volatile boolean threadFailed;
753	>	private final AtomicReference<Throwable> threadFailure
754	>	= new AtomicReference<>(null);
755
756		/**
757	<	* Initializes test to indicate that no thread assertions have failed
757	>	* Records an exception so that it can be rethrown later in the test
758	>	* harness thread, triggering a test case failure.  Only the first
759	>	* failure is recorded; subsequent calls to this method from within
760	>	* the same test have no effect.
761		*/
762	+	public void threadRecordFailure(Throwable t) {
763	+	System.err.println(t);
764	+	if (threadFailure.compareAndSet(null, t))
765	+	dumpTestThreads();
766	+	}
767	+
768		public void setUp() {
769		setDelays();
770	<	threadFailed = false;
770	>	}
771	>
772	>	void tearDownFail(String format, Object... args) {
773	>	String msg = toString() + ": " + String.format(format, args);
774	>	System.err.println(msg);
775	>	dumpTestThreads();
776	>	throw new AssertionError(msg);
777		}
778
779		/**
780	<	* Triggers test case failure if any thread assertions have failed
781	<	*/
782	<	public void tearDown() {
783	<	assertFalse(threadFailed);
780	>	* Extra checks that get done for all test cases.
781	>	*
782	>	* Triggers test case failure if any thread assertions have failed,
783	>	* by rethrowing, in the test harness thread, any exception recorded
784	>	* earlier by threadRecordFailure.
785	>	*
786	>	* Triggers test case failure if interrupt status is set in the main thread.
787	>	*/
788	>	public void tearDown() throws Exception {
789	>	Throwable t = threadFailure.getAndSet(null);
790	>	if (t != null) {
791	>	if (t instanceof Error)
792	>	throw (Error) t;
793	>	else if (t instanceof RuntimeException)
794	>	throw (RuntimeException) t;
795	>	else if (t instanceof Exception)
796	>	throw (Exception) t;
797	>	else
798	>	throw new AssertionError(t.toString(), t);
799	>	}
800	>
801	>	if (Thread.interrupted())
802	>	tearDownFail("interrupt status set in main thread");
803	>
804	>	checkForkJoinPoolThreadLeaks();
805	>	}
806	>
807	>	/**
808	>	* Finds missing PoolCleaners
809	>	*/
810	>	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
811	>	Thread[] survivors = new Thread[7];
812	>	int count = Thread.enumerate(survivors);
813	>	for (int i = 0; i < count; i++) {
814	>	Thread thread = survivors[i];
815	>	String name = thread.getName();
816	>	if (name.startsWith("ForkJoinPool-")) {
817	>	// give thread some time to terminate
818	>	thread.join(LONG_DELAY_MS);
819	>	if (thread.isAlive())
820	>	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
821	>	thread);
822	>	}
823	>	}
824	>
825	>	if (!ForkJoinPool.commonPool()
826	>	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
827	>	tearDownFail("ForkJoin common pool thread stuck");
828		}
829
830		/**
831	<	* Fail, also setting status to indicate current testcase should fail
831	>	* Just like fail(reason), but additionally recording (using
832	>	* threadRecordFailure) any AssertionError thrown, so that the
833	>	* current testcase will fail.
834		*/
835		public void threadFail(String reason) {
836	<	threadFailed = true;
837	<	fail(reason);
836	>	try {
837	>	fail(reason);
838	>	} catch (AssertionError fail) {
839	>	threadRecordFailure(fail);
840	>	throw fail;
841	>	}
842		}
843
844		/**
845	<	* If expression not true, set status to indicate current testcase
846	<	* should fail
845	>	* Just like assertTrue(b), but additionally recording (using
846	>	* threadRecordFailure) any AssertionError thrown, so that the
847	>	* current testcase will fail.
848		*/
849		public void threadAssertTrue(boolean b) {
850	<	if (!b) {
239	<	threadFailed = true;
850	>	try {
851		assertTrue(b);
852	+	} catch (AssertionError fail) {
853	+	threadRecordFailure(fail);
854	+	throw fail;
855		}
856		}
857
858		/**
859	<	* If expression not false, set status to indicate current testcase
860	<	* should fail
859	>	* Just like assertFalse(b), but additionally recording (using
860	>	* threadRecordFailure) any AssertionError thrown, so that the
861	>	* current testcase will fail.
862		*/
863		public void threadAssertFalse(boolean b) {
864	<	if (b) {
250	<	threadFailed = true;
864	>	try {
865		assertFalse(b);
866	+	} catch (AssertionError fail) {
867	+	threadRecordFailure(fail);
868	+	throw fail;
869		}
870		}
871
872		/**
873	<	* If argument not null, set status to indicate current testcase
874	<	* should fail
873	>	* Just like assertNull(x), but additionally recording (using
874	>	* threadRecordFailure) any AssertionError thrown, so that the
875	>	* current testcase will fail.
876		*/
877		public void threadAssertNull(Object x) {
878	<	if (x != null) {
261	<	threadFailed = true;
878	>	try {
879		assertNull(x);
880	+	} catch (AssertionError fail) {
881	+	threadRecordFailure(fail);
882	+	throw fail;
883		}
884		}
885
886		/**
887	<	* If arguments not equal, set status to indicate current testcase
888	<	* should fail
887	>	* Just like assertEquals(x, y), but additionally recording (using
888	>	* threadRecordFailure) any AssertionError thrown, so that the
889	>	* current testcase will fail.
890		*/
891		public void threadAssertEquals(long x, long y) {
892	<	if (x != y) {
272	<	threadFailed = true;
892	>	try {
893		assertEquals(x, y);
894	+	} catch (AssertionError fail) {
895	+	threadRecordFailure(fail);
896	+	throw fail;
897		}
898		}
899
900		/**
901	<	* If arguments not equal, set status to indicate current testcase
902	<	* should fail
901	>	* Just like assertEquals(x, y), but additionally recording (using
902	>	* threadRecordFailure) any AssertionError thrown, so that the
903	>	* current testcase will fail.
904		*/
905		public void threadAssertEquals(Object x, Object y) {
906	<	if (x != y && (x == null || !x.equals(y))) {
283	<	threadFailed = true;
906	>	try {
907		assertEquals(x, y);
908	+	} catch (AssertionError fail) {
909	+	threadRecordFailure(fail);
910	+	throw fail;
911	+	} catch (Throwable fail) {
912	+	threadUnexpectedException(fail);
913	+	}
914	+	}
915	+
916	+	/**
917	+	* Just like assertSame(x, y), but additionally recording (using
918	+	* threadRecordFailure) any AssertionError thrown, so that the
919	+	* current testcase will fail.
920	+	*/
921	+	public void threadAssertSame(Object x, Object y) {
922	+	try {
923	+	assertSame(x, y);
924	+	} catch (AssertionError fail) {
925	+	threadRecordFailure(fail);
926	+	throw fail;
927		}
928		}
929
930		/**
931	<	* threadFail with message "should throw exception"
931	>	* Calls threadFail with message "should throw exception".
932		*/
933		public void threadShouldThrow() {
934	<	threadFailed = true;
935	<	fail("should throw exception");
934	>	threadFail("should throw exception");
935	>	}
936	>
937	>	/**
938	>	* Calls threadFail with message "should throw" + exceptionName.
939	>	*/
940	>	public void threadShouldThrow(String exceptionName) {
941	>	threadFail("should throw " + exceptionName);
942	>	}
943	>
944	>	/**
945	>	* Records the given exception using {@link #threadRecordFailure},
946	>	* then rethrows the exception, wrapping it in an AssertionError
947	>	* if necessary.
948	>	*/
949	>	public void threadUnexpectedException(Throwable t) {
950	>	threadRecordFailure(t);
951	>	t.printStackTrace();
952	>	if (t instanceof RuntimeException)
953	>	throw (RuntimeException) t;
954	>	else if (t instanceof Error)
955	>	throw (Error) t;
956	>	else
957	>	throw new AssertionError("unexpected exception: " + t, t);
958		}
959
960		/**
961	<	* threadFail with message "Unexpected exception"
961	>	* Delays, via Thread.sleep, for the given millisecond delay, but
962	>	* if the sleep is shorter than specified, may re-sleep or yield
963	>	* until time elapses.  Ensures that the given time, as measured
964	>	* by System.nanoTime(), has elapsed.
965		*/
966	<	public void threadUnexpectedException() {
967	<	threadFailed = true;
968	<	fail("Unexpected exception");
966	>	static void delay(long millis) throws InterruptedException {
967	>	long nanos = millis * (1000 * 1000);
968	>	final long wakeupTime = System.nanoTime() + nanos;
969	>	do {
970	>	if (millis > 0L)
971	>	Thread.sleep(millis);
972	>	else // too short to sleep
973	>	Thread.yield();
974	>	nanos = wakeupTime - System.nanoTime();
975	>	millis = nanos / (1000 * 1000);
976	>	} while (nanos >= 0L);
977		}
978
979		/**
980	<	* threadFail with message "Unexpected exception", with argument
980	>	* Allows use of try-with-resources with per-test thread pools.
981		*/
982	<	public void threadUnexpectedException(Throwable ex) {
983	<	threadFailed = true;
984	<	ex.printStackTrace();
985	<	fail("Unexpected exception: " + ex);
982	>	class PoolCleaner implements AutoCloseable {
983	>	private final ExecutorService pool;
984	>	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
985	>	public void close() { joinPool(pool); }
986	>	}
987	>
988	>	/**
989	>	* An extension of PoolCleaner that has an action to release the pool.
990	>	*/
991	>	class PoolCleanerWithReleaser extends PoolCleaner {
992	>	private final Runnable releaser;
993	>	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
994	>	super(pool);
995	>	this.releaser = releaser;
996	>	}
997	>	public void close() {
998	>	try {
999	>	releaser.run();
1000	>	} finally {
1001	>	super.close();
1002	>	}
1003	>	}
1004	>	}
1005	>
1006	>	PoolCleaner cleaner(ExecutorService pool) {
1007	>	return new PoolCleaner(pool);
1008	>	}
1009	>
1010	>	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
1011	>	return new PoolCleanerWithReleaser(pool, releaser);
1012	>	}
1013	>
1014	>	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
1015	>	return new PoolCleanerWithReleaser(pool, releaser(latch));
1016	>	}
1017	>
1018	>	Runnable releaser(final CountDownLatch latch) {
1019	>	return new Runnable() { public void run() {
1020	>	do { latch.countDown(); }
1021	>	while (latch.getCount() > 0);
1022	>	}};
1023	>	}
1024	>
1025	>	PoolCleaner cleaner(ExecutorService pool, AtomicBoolean flag) {
1026	>	return new PoolCleanerWithReleaser(pool, releaser(flag));
1027	>	}
1028	>
1029	>	Runnable releaser(final AtomicBoolean flag) {
1030	>	return new Runnable() { public void run() { flag.set(true); }};
1031		}
1032
1033		/**
1034	<	* Wait out termination of a thread pool or fail doing so
1034	>	* Waits out termination of a thread pool or fails doing so.
1035		*/
1036	<	public void joinPool(ExecutorService exec) {
1036	>	void joinPool(ExecutorService pool) {
1037		try {
1038	<	exec.shutdown();
1039	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
1038	>	pool.shutdown();
1039	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
1040	>	try {
1041	>	threadFail("ExecutorService " + pool +
1042	>	" did not terminate in a timely manner");
1043	>	} finally {
1044	>	// last resort, for the benefit of subsequent tests
1045	>	pool.shutdownNow();
1046	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
1047	>	}
1048	>	}
1049		} catch (SecurityException ok) {
1050		// Allowed in case test doesn't have privs
1051	<	} catch (InterruptedException ie) {
1052	<	fail("Unexpected exception");
1051	>	} catch (InterruptedException fail) {
1052	>	threadFail("Unexpected InterruptedException");
1053		}
1054		}
1055
1056	+	/**
1057	+	* Like Runnable, but with the freedom to throw anything.
1058	+	* junit folks had the same idea:
1059	+	* http://junit.org/junit5/docs/snapshot/api/org/junit/gen5/api/Executable.html
1060	+	*/
1061	+	interface Action { public void run() throws Throwable; }
1062	+
1063	+	/**
1064	+	* Runs all the given actions in parallel, failing if any fail.
1065	+	* Useful for running multiple variants of tests that are
1066	+	* necessarily individually slow because they must block.
1067	+	*/
1068	+	void testInParallel(Action ... actions) {
1069	+	ExecutorService pool = Executors.newCachedThreadPool();
1070	+	try (PoolCleaner cleaner = cleaner(pool)) {
1071	+	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
1072	+	for (final Action action : actions)
1073	+	futures.add(pool.submit(new CheckedRunnable() {
1074	+	public void realRun() throws Throwable { action.run();}}));
1075	+	for (Future<?> future : futures)
1076	+	try {
1077	+	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
1078	+	} catch (ExecutionException ex) {
1079	+	threadUnexpectedException(ex.getCause());
1080	+	} catch (Exception ex) {
1081	+	threadUnexpectedException(ex);
1082	+	}
1083	+	}
1084	+	}
1085	+
1086	+	/** Returns true if thread info might be useful in a thread dump. */
1087	+	static boolean threadOfInterest(ThreadInfo info) {
1088	+	final String name = info.getThreadName();
1089	+	String lockName;
1090	+	if (name == null)
1091	+	return true;
1092	+	if (name.equals("Signal Dispatcher")
1093	+	|| name.equals("WedgedTestDetector"))
1094	+	return false;
1095	+	if (name.equals("Reference Handler")) {
1096	+	// Reference Handler stacktrace changed in JDK-8156500
1097	+	StackTraceElement[] stackTrace; String methodName;
1098	+	if ((stackTrace = info.getStackTrace()) != null
1099	+	&& stackTrace.length > 0
1100	+	&& (methodName = stackTrace[0].getMethodName()) != null
1101	+	&& methodName.equals("waitForReferencePendingList"))
1102	+	return false;
1103	+	// jdk8 Reference Handler stacktrace
1104	+	if ((lockName = info.getLockName()) != null
1105	+	&& lockName.startsWith("java.lang.ref"))
1106	+	return false;
1107	+	}
1108	+	if ((name.equals("Finalizer") || name.equals("Common-Cleaner"))
1109	+	&& (lockName = info.getLockName()) != null
1110	+	&& lockName.startsWith("java.lang.ref"))
1111	+	return false;
1112	+	if (name.startsWith("ForkJoinPool.commonPool-worker")
1113	+	&& (lockName = info.getLockName()) != null
1114	+	&& lockName.startsWith("java.util.concurrent.ForkJoinPool"))
1115	+	return false;
1116	+	return true;
1117	+	}
1118	+
1119	+	/**
1120	+	* A debugging tool to print stack traces of most threads, as jstack does.
1121	+	* Uninteresting threads are filtered out.
1122	+	*/
1123	+	static void dumpTestThreads() {
1124	+	SecurityManager sm = System.getSecurityManager();
1125	+	if (sm != null) {
1126	+	try {
1127	+	System.setSecurityManager(null);
1128	+	} catch (SecurityException giveUp) {
1129	+	return;
1130	+	}
1131	+	}
1132	+
1133	+	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
1134	+	System.err.println("------ stacktrace dump start ------");
1135	+	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true))
1136	+	if (threadOfInterest(info))
1137	+	System.err.print(info);
1138	+	System.err.println("------ stacktrace dump end ------");
1139	+
1140	+	if (sm != null) System.setSecurityManager(sm);
1141	+	}
1142	+
1143	+	/**
1144	+	* Checks that thread eventually enters the expected blocked thread state.
1145	+	*/
1146	+	void assertThreadBlocks(Thread thread, Thread.State expected) {
1147	+	// always sleep at least 1 ms, with high probability avoiding
1148	+	// transitory states
1149	+	for (long retries = LONG_DELAY_MS * 3 / 4; retries-->0; ) {
1150	+	try { delay(1); }
1151	+	catch (InterruptedException fail) {
1152	+	throw new AssertionError("Unexpected InterruptedException", fail);
1153	+	}
1154	+	Thread.State s = thread.getState();
1155	+	if (s == expected)
1156	+	return;
1157	+	else if (s == Thread.State.TERMINATED)
1158	+	fail("Unexpected thread termination");
1159	+	}
1160	+	fail("timed out waiting for thread to enter thread state " + expected);
1161	+	}
1162
1163		/**
1164	<	* fail with message "should throw exception"
1164	>	* Checks that future.get times out, with the default timeout of
1165	>	* {@code timeoutMillis()}.
1166		*/
1167	<	public void shouldThrow() {
1168	<	fail("Should throw exception");
1167	>	void assertFutureTimesOut(Future future) {
1168	>	assertFutureTimesOut(future, timeoutMillis());
1169	>	}
1170	>
1171	>	/**
1172	>	* Checks that future.get times out, with the given millisecond timeout.
1173	>	*/
1174	>	void assertFutureTimesOut(Future future, long timeoutMillis) {
1175	>	long startTime = System.nanoTime();
1176	>	try {
1177	>	future.get(timeoutMillis, MILLISECONDS);
1178	>	shouldThrow();
1179	>	} catch (TimeoutException success) {
1180	>	} catch (Exception fail) {
1181	>	threadUnexpectedException(fail);
1182	>	} finally { future.cancel(true); }
1183	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
1184		}
1185
1186		/**
1187	<	* fail with message "Unexpected exception"
1187	>	* Fails with message "should throw exception".
1188		*/
1189	<	public void unexpectedException() {
1190	<	fail("Unexpected exception");
1189	>	public void shouldThrow() {
1190	>	fail("Should throw exception");
1191		}
1192
1193		/**
1194	<	* fail with message "Unexpected exception", with argument
1194	>	* Fails with message "should throw " + exceptionName.
1195		*/
1196	<	public void unexpectedException(Throwable ex) {
1197	<	ex.printStackTrace();
347	<	fail("Unexpected exception: " + ex);
1196	>	public void shouldThrow(String exceptionName) {
1197	>	fail("Should throw " + exceptionName);
1198		}
1199
1200	+	/**
1201	+	* The maximum number of consecutive spurious wakeups we should
1202	+	* tolerate (from APIs like LockSupport.park) before failing a test.
1203	+	*/
1204	+	static final int MAX_SPURIOUS_WAKEUPS = 10;
1205
1206		/**
1207		* The number of elements to place in collections, arrays, etc.
1208		*/
1209	<	static final int SIZE = 20;
1209	>	public static final int SIZE = 20;
1210
1211		// Some convenient Integer constants
1212
1213	<	static final Integer zero = new Integer(0);
1214	<	static final Integer one = new Integer(1);
1215	<	static final Integer two = new Integer(2);
1216	<	static final Integer three  = new Integer(3);
1217	<	static final Integer four  = new Integer(4);
1218	<	static final Integer five  = new Integer(5);
1219	<	static final Integer six = new Integer(6);
1220	<	static final Integer seven = new Integer(7);
1221	<	static final Integer eight = new Integer(8);
1222	<	static final Integer nine = new Integer(9);
1223	<	static final Integer m1  = new Integer(-1);
1224	<	static final Integer m2  = new Integer(-2);
1225	<	static final Integer m3  = new Integer(-3);
1226	<	static final Integer m4 = new Integer(-4);
1227	<	static final Integer m5 = new Integer(-5);
1228	<	static final Integer m6 = new Integer(-6);
1229	<	static final Integer m10 = new Integer(-10);
1213	>	public static final Integer zero  = new Integer(0);
1214	>	public static final Integer one   = new Integer(1);
1215	>	public static final Integer two   = new Integer(2);
1216	>	public static final Integer three = new Integer(3);
1217	>	public static final Integer four  = new Integer(4);
1218	>	public static final Integer five  = new Integer(5);
1219	>	public static final Integer six   = new Integer(6);
1220	>	public static final Integer seven = new Integer(7);
1221	>	public static final Integer eight = new Integer(8);
1222	>	public static final Integer nine  = new Integer(9);
1223	>	public static final Integer m1  = new Integer(-1);
1224	>	public static final Integer m2  = new Integer(-2);
1225	>	public static final Integer m3  = new Integer(-3);
1226	>	public static final Integer m4  = new Integer(-4);
1227	>	public static final Integer m5  = new Integer(-5);
1228	>	public static final Integer m6  = new Integer(-6);
1229	>	public static final Integer m10 = new Integer(-10);
1230	>
1231	>	/**
1232	>	* Runs Runnable r with a security policy that permits precisely
1233	>	* the specified permissions.  If there is no current security
1234	>	* manager, the runnable is run twice, both with and without a
1235	>	* security manager.  We require that any security manager permit
1236	>	* getPolicy/setPolicy.
1237	>	*/
1238	>	public void runWithPermissions(Runnable r, Permission... permissions) {
1239	>	SecurityManager sm = System.getSecurityManager();
1240	>	if (sm == null) {
1241	>	r.run();
1242	>	}
1243	>	runWithSecurityManagerWithPermissions(r, permissions);
1244	>	}
1245
1246	+	/**
1247	+	* Runs Runnable r with a security policy that permits precisely
1248	+	* the specified permissions.  If there is no current security
1249	+	* manager, a temporary one is set for the duration of the
1250	+	* Runnable.  We require that any security manager permit
1251	+	* getPolicy/setPolicy.
1252	+	*/
1253	+	public void runWithSecurityManagerWithPermissions(Runnable r,
1254	+	Permission... permissions) {
1255	+	SecurityManager sm = System.getSecurityManager();
1256	+	if (sm == null) {
1257	+	Policy savedPolicy = Policy.getPolicy();
1258	+	try {
1259	+	Policy.setPolicy(permissivePolicy());
1260	+	System.setSecurityManager(new SecurityManager());
1261	+	runWithSecurityManagerWithPermissions(r, permissions);
1262	+	} finally {
1263	+	System.setSecurityManager(null);
1264	+	Policy.setPolicy(savedPolicy);
1265	+	}
1266	+	} else {
1267	+	Policy savedPolicy = Policy.getPolicy();
1268	+	AdjustablePolicy policy = new AdjustablePolicy(permissions);
1269	+	Policy.setPolicy(policy);
1270	+
1271	+	try {
1272	+	r.run();
1273	+	} finally {
1274	+	policy.addPermission(new SecurityPermission("setPolicy"));
1275	+	Policy.setPolicy(savedPolicy);
1276	+	}
1277	+	}
1278	+	}
1279	+
1280	+	/**
1281	+	* Runs a runnable without any permissions.
1282	+	*/
1283	+	public void runWithoutPermissions(Runnable r) {
1284	+	runWithPermissions(r);
1285	+	}
1286
1287		/**
1288		* A security policy where new permissions can be dynamically added
1289		* or all cleared.
1290		*/
1291	<	static class AdjustablePolicy extends java.security.Policy {
1291	>	public static class AdjustablePolicy extends java.security.Policy {
1292		Permissions perms = new Permissions();
1293	<	AdjustablePolicy() { }
1293	>	AdjustablePolicy(Permission... permissions) {
1294	>	for (Permission permission : permissions)
1295	>	perms.add(permission);
1296	>	}
1297		void addPermission(Permission perm) { perms.add(perm); }
1298		void clearPermissions() { perms = new Permissions(); }
1299	<	public PermissionCollection getPermissions(CodeSource cs) {
1300	<	return perms;
1301	<	}
1302	<	public PermissionCollection getPermissions(ProtectionDomain pd) {
1303	<	return perms;
1304	<	}
1305	<	public boolean implies(ProtectionDomain pd, Permission p) {
1306	<	return perms.implies(p);
1307	<	}
1308	<	public void refresh() {}
1299	>	public PermissionCollection getPermissions(CodeSource cs) {
1300	>	return perms;
1301	>	}
1302	>	public PermissionCollection getPermissions(ProtectionDomain pd) {
1303	>	return perms;
1304	>	}
1305	>	public boolean implies(ProtectionDomain pd, Permission p) {
1306	>	return perms.implies(p);
1307	>	}
1308	>	public void refresh() {}
1309	>	public String toString() {
1310	>	List<Permission> ps = new ArrayList<>();
1311	>	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1312	>	ps.add(e.nextElement());
1313	>	return "AdjustablePolicy with permissions " + ps;
1314	>	}
1315	>	}
1316	>
1317	>	/**
1318	>	* Returns a policy containing all the permissions we ever need.
1319	>	*/
1320	>	public static Policy permissivePolicy() {
1321	>	return new AdjustablePolicy
1322	>	// Permissions j.u.c. needs directly
1323	>	(new RuntimePermission("modifyThread"),
1324	>	new RuntimePermission("getClassLoader"),
1325	>	new RuntimePermission("setContextClassLoader"),
1326	>	// Permissions needed to change permissions!
1327	>	new SecurityPermission("getPolicy"),
1328	>	new SecurityPermission("setPolicy"),
1329	>	new RuntimePermission("setSecurityManager"),
1330	>	// Permissions needed by the junit test harness
1331	>	new RuntimePermission("accessDeclaredMembers"),
1332	>	new PropertyPermission("*", "read"),
1333	>	new java.io.FilePermission("<<ALL FILES>>", "read"));
1334	>	}
1335	>
1336	>	/**
1337	>	* Sleeps until the given time has elapsed.
1338	>	* Throws AssertionError if interrupted.
1339	>	*/
1340	>	static void sleep(long millis) {
1341	>	try {
1342	>	delay(millis);
1343	>	} catch (InterruptedException fail) {
1344	>	throw new AssertionError("Unexpected InterruptedException", fail);
1345	>	}
1346	>	}
1347	>
1348	>	/**
1349	>	* Spin-waits up to the specified number of milliseconds for the given
1350	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1351	>	* @param waitingForGodot if non-null, an additional condition to satisfy
1352	>	*/
1353	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis,
1354	>	Callable<Boolean> waitingForGodot) {
1355	>	for (long startTime = 0L;;) {
1356	>	switch (thread.getState()) {
1357	>	default: break;
1358	>	case BLOCKED: case WAITING: case TIMED_WAITING:
1359	>	try {
1360	>	if (waitingForGodot == null || waitingForGodot.call())
1361	>	return;
1362	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1363	>	break;
1364	>	case TERMINATED:
1365	>	fail("Unexpected thread termination");
1366	>	}
1367	>
1368	>	if (startTime == 0L)
1369	>	startTime = System.nanoTime();
1370	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1371	>	assertTrue(thread.isAlive());
1372	>	if (waitingForGodot == null
1373	>	|| thread.getState() == Thread.State.RUNNABLE)
1374	>	fail("timed out waiting for thread to enter wait state");
1375	>	else
1376	>	fail("timed out waiting for condition, thread state="
1377	>	+ thread.getState());
1378	>	}
1379	>	Thread.yield();
1380	>	}
1381	>	}
1382	>
1383	>	/**
1384	>	* Spin-waits up to the specified number of milliseconds for the given
1385	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1386	>	*/
1387	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1388	>	waitForThreadToEnterWaitState(thread, timeoutMillis, null);
1389	>	}
1390	>
1391	>	/**
1392	>	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1393	>	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1394	>	*/
1395	>	void waitForThreadToEnterWaitState(Thread thread) {
1396	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS, null);
1397	>	}
1398	>
1399	>	/**
1400	>	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1401	>	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING,
1402	>	* and additionally satisfy the given condition.
1403	>	*/
1404	>	void waitForThreadToEnterWaitState(Thread thread,
1405	>	Callable<Boolean> waitingForGodot) {
1406	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS, waitingForGodot);
1407	>	}
1408	>
1409	>	/**
1410	>	* Spin-waits up to LONG_DELAY_MS milliseconds for the current thread to
1411	>	* be interrupted.  Clears the interrupt status before returning.
1412	>	*/
1413	>	void awaitInterrupted() {
1414	>	for (long startTime = 0L; !Thread.interrupted(); ) {
1415	>	if (startTime == 0L)
1416	>	startTime = System.nanoTime();
1417	>	else if (millisElapsedSince(startTime) > LONG_DELAY_MS)
1418	>	fail("timed out waiting for thread interrupt");
1419	>	Thread.yield();
1420	>	}
1421	>	}
1422	>
1423	>	/**
1424	>	* Returns the number of milliseconds since time given by
1425	>	* startNanoTime, which must have been previously returned from a
1426	>	* call to {@link System#nanoTime()}.
1427	>	*/
1428	>	static long millisElapsedSince(long startNanoTime) {
1429	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1430	>	}
1431	>
1432	>	/**
1433	>	* Checks that timed f.get() returns the expected value, and does not
1434	>	* wait for the timeout to elapse before returning.
1435	>	*/
1436	>	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1437	>	long startTime = System.nanoTime();
1438	>	T actual = null;
1439	>	try {
1440	>	actual = f.get(timeoutMillis, MILLISECONDS);
1441	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1442	>	assertEquals(expectedValue, actual);
1443	>	if (millisElapsedSince(startTime) > timeoutMillis/2)
1444	>	throw new AssertionError("timed get did not return promptly");
1445	>	}
1446	>
1447	>	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1448	>	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1449		}
1450
1451	+	/**
1452	+	* Returns a new started daemon Thread running the given runnable.
1453	+	*/
1454	+	Thread newStartedThread(Runnable runnable) {
1455	+	Thread t = new Thread(runnable);
1456	+	t.setDaemon(true);
1457	+	t.start();
1458	+	return t;
1459	+	}
1460	+
1461	+	/**
1462	+	* Waits for the specified time (in milliseconds) for the thread
1463	+	* to terminate (using {@link Thread#join(long)}), else interrupts
1464	+	* the thread (in the hope that it may terminate later) and fails.
1465	+	*/
1466	+	void awaitTermination(Thread thread, long timeoutMillis) {
1467	+	try {
1468	+	thread.join(timeoutMillis);
1469	+	} catch (InterruptedException fail) {
1470	+	threadUnexpectedException(fail);
1471	+	}
1472	+	if (thread.getState() != Thread.State.TERMINATED) {
1473	+	String detail = String.format(
1474	+	"timed out waiting for thread to terminate, thread=%s, state=%s" ,
1475	+	thread, thread.getState());
1476	+	try {
1477	+	threadFail(detail);
1478	+	} finally {
1479	+	// Interrupt thread __after__ having reported its stack trace
1480	+	thread.interrupt();
1481	+	}
1482	+	}
1483	+	}
1484	+
1485	+	/**
1486	+	* Waits for LONG_DELAY_MS milliseconds for the thread to
1487	+	* terminate (using {@link Thread#join(long)}), else interrupts
1488	+	* the thread (in the hope that it may terminate later) and fails.
1489	+	*/
1490	+	void awaitTermination(Thread t) {
1491	+	awaitTermination(t, LONG_DELAY_MS);
1492	+	}
1493
1494		// Some convenient Runnable classes
1495
1496	<	abstract class CheckedRunnable implements Runnable {
1497	<	abstract void realRun() throws Throwable;
1496	>	public abstract class CheckedRunnable implements Runnable {
1497	>	protected abstract void realRun() throws Throwable;
1498	>
1499	>	public final void run() {
1500	>	try {
1501	>	realRun();
1502	>	} catch (Throwable fail) {
1503	>	threadUnexpectedException(fail);
1504	>	}
1505	>	}
1506	>	}
1507	>
1508	>	public abstract class ThreadShouldThrow extends Thread {
1509	>	protected abstract void realRun() throws Throwable;
1510	>
1511	>	final Class<?> exceptionClass;
1512	>
1513	>	<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) {
1514	>	this.exceptionClass = exceptionClass;
1515	>	}
1516
1517		public final void run() {
1518		try {
1519		realRun();
1520		} catch (Throwable t) {
1521	<	threadUnexpectedException(t);
1521	>	if (! exceptionClass.isInstance(t))
1522	>	threadUnexpectedException(t);
1523	>	return;
1524		}
1525	+	threadShouldThrow(exceptionClass.getSimpleName());
1526		}
1527		}
1528
1529	<	abstract class CheckedInterruptedRunnable implements Runnable {
1530	<	abstract void realRun() throws Throwable;
1529	>	public abstract class CheckedInterruptedRunnable implements Runnable {
1530	>	protected abstract void realRun() throws Throwable;
1531
1532		public final void run() {
1533		try {
1534		realRun();
419	–	threadShouldThrow();
1535		} catch (InterruptedException success) {
1536	<	} catch (Throwable t) {
1537	<	threadUnexpectedException(t);
1536	>	threadAssertFalse(Thread.interrupted());
1537	>	return;
1538	>	} catch (Throwable fail) {
1539	>	threadUnexpectedException(fail);
1540		}
1541	+	threadShouldThrow("InterruptedException");
1542		}
1543		}
1544
1545	<	abstract class CheckedCallable<T> implements Callable<T> {
1546	<	abstract T realCall() throws Throwable;
1545	>	public abstract class CheckedCallable<T> implements Callable<T> {
1546	>	protected abstract T realCall() throws Throwable;
1547
1548		public final T call() {
1549		try {
1550		return realCall();
1551	<	} catch (Throwable t) {
1552	<	threadUnexpectedException(t);
435	<	return null;
1551	>	} catch (Throwable fail) {
1552	>	threadUnexpectedException(fail);
1553		}
1554	+	throw new AssertionError("unreached");
1555		}
1556		}
1557
1558	<	static class NoOpRunnable implements Runnable {
1558	>	public static class NoOpRunnable implements Runnable {
1559		public void run() {}
1560		}
1561
1562	<	static class NoOpCallable implements Callable {
1562	>	public static class NoOpCallable implements Callable {
1563		public Object call() { return Boolean.TRUE; }
1564		}
1565
1566	<	static final String TEST_STRING = "a test string";
1566	>	public static final String TEST_STRING = "a test string";
1567
1568	<	static class StringTask implements Callable<String> {
1569	<	public String call() { return TEST_STRING; }
1568	>	public static class StringTask implements Callable<String> {
1569	>	final String value;
1570	>	public StringTask() { this(TEST_STRING); }
1571	>	public StringTask(String value) { this.value = value; }
1572	>	public String call() { return value; }
1573		}
1574
1575	<	static class NPETask implements Callable<String> {
1576	<	public String call() { throw new NullPointerException(); }
1575	>	public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1576	>	return new CheckedCallable<String>() {
1577	>	protected String realCall() {
1578	>	try {
1579	>	latch.await();
1580	>	} catch (InterruptedException quittingTime) {}
1581	>	return TEST_STRING;
1582	>	}};
1583		}
1584
1585	<	static class CallableOne implements Callable<Integer> {
1586	<	public Integer call() { return one; }
1585	>	public Runnable countDowner(final CountDownLatch latch) {
1586	>	return new CheckedRunnable() {
1587	>	public void realRun() throws InterruptedException {
1588	>	latch.countDown();
1589	>	}};
1590		}
1591
1592	<	class ShortRunnable extends CheckedRunnable {
1593	<	void realRun() throws Throwable {
1594	<	Thread.sleep(SHORT_DELAY_MS);
1592	>	class LatchAwaiter extends CheckedRunnable {
1593	>	static final int NEW = 0;
1594	>	static final int RUNNING = 1;
1595	>	static final int DONE = 2;
1596	>	final CountDownLatch latch;
1597	>	int state = NEW;
1598	>	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1599	>	public void realRun() throws InterruptedException {
1600	>	state = 1;
1601	>	await(latch);
1602	>	state = 2;
1603		}
1604		}
1605
1606	<	class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1607	<	void realRun() throws InterruptedException {
470	<	Thread.sleep(SHORT_DELAY_MS);
471	<	}
1606	>	public LatchAwaiter awaiter(CountDownLatch latch) {
1607	>	return new LatchAwaiter(latch);
1608		}
1609
1610	<	class SmallRunnable extends CheckedRunnable {
1611	<	void realRun() throws Throwable {
1612	<	Thread.sleep(SMALL_DELAY_MS);
1610	>	public void await(CountDownLatch latch, long timeoutMillis) {
1611	>	boolean timedOut = false;
1612	>	try {
1613	>	timedOut = !latch.await(timeoutMillis, MILLISECONDS);
1614	>	} catch (Throwable fail) {
1615	>	threadUnexpectedException(fail);
1616		}
1617	+	if (timedOut)
1618	+	fail("timed out waiting for CountDownLatch for "
1619	+	+ (timeoutMillis/1000) + " sec");
1620		}
1621
1622	<	class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1623	<	void realRun() {
482	<	try {
483	<	Thread.sleep(SMALL_DELAY_MS);
484	<	}
485	<	catch (InterruptedException ok) {
486	<	}
487	<	}
1622	>	public void await(CountDownLatch latch) {
1623	>	await(latch, LONG_DELAY_MS);
1624		}
1625
1626	<	class SmallCallable extends CheckedCallable {
1627	<	Object realCall() throws Throwable {
1628	<	Thread.sleep(SMALL_DELAY_MS);
1629	<	return Boolean.TRUE;
1626	>	public void await(Semaphore semaphore) {
1627	>	boolean timedOut = false;
1628	>	try {
1629	>	timedOut = !semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS);
1630	>	} catch (Throwable fail) {
1631	>	threadUnexpectedException(fail);
1632		}
1633	+	if (timedOut)
1634	+	fail("timed out waiting for Semaphore for "
1635	+	+ (LONG_DELAY_MS/1000) + " sec");
1636		}
1637
1638	<	class SmallInterruptedRunnable extends CheckedInterruptedRunnable {
1639	<	void realRun() throws InterruptedException {
1640	<	Thread.sleep(SMALL_DELAY_MS);
1638	>	public void await(CyclicBarrier barrier) {
1639	>	try {
1640	>	barrier.await(LONG_DELAY_MS, MILLISECONDS);
1641	>	} catch (Throwable fail) {
1642	>	threadUnexpectedException(fail);
1643		}
1644		}
1645
1646	<	class MediumRunnable extends CheckedRunnable {
1647	<	void realRun() throws Throwable {
1648	<	Thread.sleep(MEDIUM_DELAY_MS);
1646	>	//     /**
1647	>	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1648	>	//      */
1649	>	//     public void await(AtomicBoolean flag) {
1650	>	//         await(flag, LONG_DELAY_MS);
1651	>	//     }
1652	>
1653	>	//     /**
1654	>	//      * Spin-waits up to the specified timeout until flag becomes true.
1655	>	//      */
1656	>	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1657	>	//         long startTime = System.nanoTime();
1658	>	//         while (!flag.get()) {
1659	>	//             if (millisElapsedSince(startTime) > timeoutMillis)
1660	>	//                 throw new AssertionError("timed out");
1661	>	//             Thread.yield();
1662	>	//         }
1663	>	//     }
1664	>
1665	>	public static class NPETask implements Callable<String> {
1666	>	public String call() { throw new NullPointerException(); }
1667	>	}
1668	>
1669	>	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1670	>	return new CheckedRunnable() {
1671	>	protected void realRun() {
1672	>	try {
1673	>	delay(timeoutMillis);
1674	>	} catch (InterruptedException ok) {}
1675	>	}};
1676	>	}
1677	>
1678	>	/**
1679	>	* For use as ThreadFactory in constructors
1680	>	*/
1681	>	public static class SimpleThreadFactory implements ThreadFactory {
1682	>	public Thread newThread(Runnable r) {
1683	>	return new Thread(r);
1684		}
1685		}
1686
1687	<	class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1688	<	void realRun() throws InterruptedException {
1689	<	Thread.sleep(MEDIUM_DELAY_MS);
1687	>	public interface TrackedRunnable extends Runnable {
1688	>	boolean isDone();
1689	>	}
1690	>
1691	>	public static class TrackedNoOpRunnable implements Runnable {
1692	>	public volatile boolean done = false;
1693	>	public void run() {
1694	>	done = true;
1695		}
1696		}
1697
1698	<	class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1699	<	void realRun() {
1698	>	/**
1699	>	* Analog of CheckedRunnable for RecursiveAction
1700	>	*/
1701	>	public abstract class CheckedRecursiveAction extends RecursiveAction {
1702	>	protected abstract void realCompute() throws Throwable;
1703	>
1704	>	@Override protected final void compute() {
1705		try {
1706	<	Thread.sleep(MEDIUM_DELAY_MS);
1707	<	}
1708	<	catch (InterruptedException ok) {
1706	>	realCompute();
1707	>	} catch (Throwable fail) {
1708	>	threadUnexpectedException(fail);
1709		}
1710		}
1711		}
1712
1713	<	class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1714	<	void realRun() {
1713	>	/**
1714	>	* Analog of CheckedCallable for RecursiveTask
1715	>	*/
1716	>	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1717	>	protected abstract T realCompute() throws Throwable;
1718	>
1719	>	@Override protected final T compute() {
1720		try {
1721	<	Thread.sleep(LONG_DELAY_MS);
1722	<	}
1723	<	catch (InterruptedException ok) {
1721	>	return realCompute();
1722	>	} catch (Throwable fail) {
1723	>	threadUnexpectedException(fail);
1724		}
1725	+	throw new AssertionError("unreached");
1726		}
1727		}
1728
1729		/**
1730	<	* For use as ThreadFactory in constructors
1730	>	* For use as RejectedExecutionHandler in constructors
1731		*/
1732	<	static class SimpleThreadFactory implements ThreadFactory {
1733	<	public Thread newThread(Runnable r) {
1734	<	return new Thread(r);
541	<	}
1732	>	public static class NoOpREHandler implements RejectedExecutionHandler {
1733	>	public void rejectedExecution(Runnable r,
1734	>	ThreadPoolExecutor executor) {}
1735		}
1736
1737	<	static class TrackedShortRunnable implements Runnable {
1738	<	volatile boolean done = false;
1739	<	public void run() {
1737	>	/**
1738	>	* A CyclicBarrier that uses timed await and fails with
1739	>	* AssertionErrors instead of throwing checked exceptions.
1740	>	*/
1741	>	public static class CheckedBarrier extends CyclicBarrier {
1742	>	public CheckedBarrier(int parties) { super(parties); }
1743	>
1744	>	public int await() {
1745		try {
1746	<	Thread.sleep(SMALL_DELAY_MS);
1747	<	done = true;
1748	<	} catch (Exception e) {
1746	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1747	>	} catch (TimeoutException timedOut) {
1748	>	throw new AssertionError("timed out");
1749	>	} catch (Exception fail) {
1750	>	throw new AssertionError("Unexpected exception: " + fail, fail);
1751		}
1752		}
1753		}
1754
1755	<	static class TrackedMediumRunnable implements Runnable {
1756	<	volatile boolean done = false;
1757	<	public void run() {
1755	>	void checkEmpty(BlockingQueue q) {
1756	>	try {
1757	>	assertTrue(q.isEmpty());
1758	>	assertEquals(0, q.size());
1759	>	assertNull(q.peek());
1760	>	assertNull(q.poll());
1761	>	assertNull(q.poll(randomExpiredTimeout(), randomTimeUnit()));
1762	>	assertEquals(q.toString(), "[]");
1763	>	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1764	>	assertFalse(q.iterator().hasNext());
1765		try {
1766	<	Thread.sleep(MEDIUM_DELAY_MS);
1767	<	done = true;
1768	<	} catch (Exception e) {
1769	<	}
1770	<	}
1766	>	q.element();
1767	>	shouldThrow();
1768	>	} catch (NoSuchElementException success) {}
1769	>	try {
1770	>	q.iterator().next();
1771	>	shouldThrow();
1772	>	} catch (NoSuchElementException success) {}
1773	>	try {
1774	>	q.remove();
1775	>	shouldThrow();
1776	>	} catch (NoSuchElementException success) {}
1777	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1778		}
1779
1780	<	static class TrackedLongRunnable implements Runnable {
1781	<	volatile boolean done = false;
1782	<	public void run() {
1783	<	try {
1784	<	Thread.sleep(LONG_DELAY_MS);
1785	<	done = true;
1786	<	} catch (Exception e) {
1787	<	}
1780	>	void assertSerialEquals(Object x, Object y) {
1781	>	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1782	>	}
1783	>
1784	>	void assertNotSerialEquals(Object x, Object y) {
1785	>	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1786	>	}
1787	>
1788	>	byte[] serialBytes(Object o) {
1789	>	try {
1790	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1791	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1792	>	oos.writeObject(o);
1793	>	oos.flush();
1794	>	oos.close();
1795	>	return bos.toByteArray();
1796	>	} catch (Throwable fail) {
1797	>	threadUnexpectedException(fail);
1798	>	return new byte[0];
1799		}
1800		}
1801
1802	<	static class TrackedNoOpRunnable implements Runnable {
1803	<	volatile boolean done = false;
1804	<	public void run() {
1805	<	done = true;
1802	>	void assertImmutable(Object o) {
1803	>	if (o instanceof Collection) {
1804	>	assertThrows(
1805	>	UnsupportedOperationException.class,
1806	>	() -> ((Collection) o).add(null));
1807		}
1808		}
1809
1810	<	static class TrackedCallable implements Callable {
1811	<	volatile boolean done = false;
1812	<	public Object call() {
1813	<	try {
1814	<	Thread.sleep(SMALL_DELAY_MS);
1815	<	done = true;
1816	<	} catch (Exception e) {
1810	>	@SuppressWarnings("unchecked")
1811	>	<T> T serialClone(T o) {
1812	>	T clone = null;
1813	>	try {
1814	>	ObjectInputStream ois = new ObjectInputStream
1815	>	(new ByteArrayInputStream(serialBytes(o)));
1816	>	clone = (T) ois.readObject();
1817	>	} catch (Throwable fail) {
1818	>	threadUnexpectedException(fail);
1819	>	}
1820	>	if (o == clone) assertImmutable(o);
1821	>	else assertSame(o.getClass(), clone.getClass());
1822	>	return clone;
1823	>	}
1824	>
1825	>	/**
1826	>	* A version of serialClone that leaves error handling (for
1827	>	* e.g. NotSerializableException) up to the caller.
1828	>	*/
1829	>	@SuppressWarnings("unchecked")
1830	>	<T> T serialClonePossiblyFailing(T o)
1831	>	throws ReflectiveOperationException, java.io.IOException {
1832	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1833	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1834	>	oos.writeObject(o);
1835	>	oos.flush();
1836	>	oos.close();
1837	>	ObjectInputStream ois = new ObjectInputStream
1838	>	(new ByteArrayInputStream(bos.toByteArray()));
1839	>	T clone = (T) ois.readObject();
1840	>	if (o == clone) assertImmutable(o);
1841	>	else assertSame(o.getClass(), clone.getClass());
1842	>	return clone;
1843	>	}
1844	>
1845	>	/**
1846	>	* If o implements Cloneable and has a public clone method,
1847	>	* returns a clone of o, else null.
1848	>	*/
1849	>	@SuppressWarnings("unchecked")
1850	>	<T> T cloneableClone(T o) {
1851	>	if (!(o instanceof Cloneable)) return null;
1852	>	final T clone;
1853	>	try {
1854	>	clone = (T) o.getClass().getMethod("clone").invoke(o);
1855	>	} catch (NoSuchMethodException ok) {
1856	>	return null;
1857	>	} catch (ReflectiveOperationException unexpected) {
1858	>	throw new Error(unexpected);
1859	>	}
1860	>	assertNotSame(o, clone); // not 100% guaranteed by spec
1861	>	assertSame(o.getClass(), clone.getClass());
1862	>	return clone;
1863	>	}
1864	>
1865	>	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1866	>	Action... throwingActions) {
1867	>	for (Action throwingAction : throwingActions) {
1868	>	boolean threw = false;
1869	>	try { throwingAction.run(); }
1870	>	catch (Throwable t) {
1871	>	threw = true;
1872	>	if (!expectedExceptionClass.isInstance(t))
1873	>	throw new AssertionError(
1874	>	"Expected " + expectedExceptionClass.getName() +
1875	>	", got " + t.getClass().getName(),
1876	>	t);
1877		}
1878	<	return Boolean.TRUE;
1878	>	if (!threw)
1879	>	shouldThrow(expectedExceptionClass.getName());
1880		}
1881		}
1882
1883	+	public void assertIteratorExhausted(Iterator<?> it) {
1884	+	try {
1885	+	it.next();
1886	+	shouldThrow();
1887	+	} catch (NoSuchElementException success) {}
1888	+	assertFalse(it.hasNext());
1889	+	}
1890	+
1891	+	public <T> Callable<T> callableThrowing(final Exception ex) {
1892	+	return new Callable<T>() { public T call() throws Exception { throw ex; }};
1893	+	}
1894	+
1895	+	public Runnable runnableThrowing(final RuntimeException ex) {
1896	+	return new Runnable() { public void run() { throw ex; }};
1897	+	}
1898	+
1899	+	/** A reusable thread pool to be shared by tests. */
1900	+	static final ExecutorService cachedThreadPool =
1901	+	new ThreadPoolExecutor(0, Integer.MAX_VALUE,
1902	+	1000L, MILLISECONDS,
1903	+	new SynchronousQueue<Runnable>());
1904	+
1905	+	static <T> void shuffle(T[] array) {
1906	+	Collections.shuffle(Arrays.asList(array), ThreadLocalRandom.current());
1907	+	}
1908
1909		/**
1910	<	* For use as RejectedExecutionHandler in constructors
1910	>	* Returns the same String as would be returned by {@link
1911	>	* Object#toString}, whether or not the given object's class
1912	>	* overrides toString().
1913	>	*
1914	>	* @see System#identityHashCode
1915		*/
1916	<	static class NoOpREHandler implements RejectedExecutionHandler {
1917	<	public void rejectedExecution(Runnable r,
1918	<	ThreadPoolExecutor executor) {}
1916	>	static String identityString(Object x) {
1917	>	return x.getClass().getName()
1918	>	+ "@" + Integer.toHexString(System.identityHashCode(x));
1919		}
1920
1921	+	// --- Shared assertions for Executor tests ---
1922	+
1923	+	/**
1924	+	* Returns maximum number of tasks that can be submitted to given
1925	+	* pool (with bounded queue) before saturation (when submission
1926	+	* throws RejectedExecutionException).
1927	+	*/
1928	+	static final int saturatedSize(ThreadPoolExecutor pool) {
1929	+	BlockingQueue<Runnable> q = pool.getQueue();
1930	+	return pool.getMaximumPoolSize() + q.size() + q.remainingCapacity();
1931	+	}
1932	+
1933	+	@SuppressWarnings("FutureReturnValueIgnored")
1934	+	void assertNullTaskSubmissionThrowsNullPointerException(Executor e) {
1935	+	try {
1936	+	e.execute((Runnable) null);
1937	+	shouldThrow();
1938	+	} catch (NullPointerException success) {}
1939	+
1940	+	if (! (e instanceof ExecutorService)) return;
1941	+	ExecutorService es = (ExecutorService) e;
1942	+	try {
1943	+	es.submit((Runnable) null);
1944	+	shouldThrow();
1945	+	} catch (NullPointerException success) {}
1946	+	try {
1947	+	es.submit((Runnable) null, Boolean.TRUE);
1948	+	shouldThrow();
1949	+	} catch (NullPointerException success) {}
1950	+	try {
1951	+	es.submit((Callable) null);
1952	+	shouldThrow();
1953	+	} catch (NullPointerException success) {}
1954	+
1955	+	if (! (e instanceof ScheduledExecutorService)) return;
1956	+	ScheduledExecutorService ses = (ScheduledExecutorService) e;
1957	+	try {
1958	+	ses.schedule((Runnable) null,
1959	+	randomTimeout(), randomTimeUnit());
1960	+	shouldThrow();
1961	+	} catch (NullPointerException success) {}
1962	+	try {
1963	+	ses.schedule((Callable) null,
1964	+	randomTimeout(), randomTimeUnit());
1965	+	shouldThrow();
1966	+	} catch (NullPointerException success) {}
1967	+	try {
1968	+	ses.scheduleAtFixedRate((Runnable) null,
1969	+	randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
1970	+	shouldThrow();
1971	+	} catch (NullPointerException success) {}
1972	+	try {
1973	+	ses.scheduleWithFixedDelay((Runnable) null,
1974	+	randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
1975	+	shouldThrow();
1976	+	} catch (NullPointerException success) {}
1977	+	}
1978	+
1979	+	void setRejectedExecutionHandler(
1980	+	ThreadPoolExecutor p, RejectedExecutionHandler handler) {
1981	+	p.setRejectedExecutionHandler(handler);
1982	+	assertSame(handler, p.getRejectedExecutionHandler());
1983	+	}
1984	+
1985	+	void assertTaskSubmissionsAreRejected(ThreadPoolExecutor p) {
1986	+	final RejectedExecutionHandler savedHandler = p.getRejectedExecutionHandler();
1987	+	final long savedTaskCount = p.getTaskCount();
1988	+	final long savedCompletedTaskCount = p.getCompletedTaskCount();
1989	+	final int savedQueueSize = p.getQueue().size();
1990	+	final boolean stock = (p.getClass().getClassLoader() == null);
1991	+
1992	+	Runnable r = () -> {};
1993	+	Callable<Boolean> c = () -> Boolean.TRUE;
1994	+
1995	+	class Recorder implements RejectedExecutionHandler {
1996	+	public volatile Runnable r = null;
1997	+	public volatile ThreadPoolExecutor p = null;
1998	+	public void reset() { r = null; p = null; }
1999	+	public void rejectedExecution(Runnable r, ThreadPoolExecutor p) {
2000	+	assertNull(this.r);
2001	+	assertNull(this.p);
2002	+	this.r = r;
2003	+	this.p = p;
2004	+	}
2005	+	}
2006	+
2007	+	// check custom handler is invoked exactly once per task
2008	+	Recorder recorder = new Recorder();
2009	+	setRejectedExecutionHandler(p, recorder);
2010	+	for (int i = 2; i--> 0; ) {
2011	+	recorder.reset();
2012	+	p.execute(r);
2013	+	if (stock && p.getClass() == ThreadPoolExecutor.class)
2014	+	assertSame(r, recorder.r);
2015	+	assertSame(p, recorder.p);
2016	+
2017	+	recorder.reset();
2018	+	assertFalse(p.submit(r).isDone());
2019	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2020	+	assertSame(p, recorder.p);
2021	+
2022	+	recorder.reset();
2023	+	assertFalse(p.submit(r, Boolean.TRUE).isDone());
2024	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2025	+	assertSame(p, recorder.p);
2026	+
2027	+	recorder.reset();
2028	+	assertFalse(p.submit(c).isDone());
2029	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2030	+	assertSame(p, recorder.p);
2031	+
2032	+	if (p instanceof ScheduledExecutorService) {
2033	+	ScheduledExecutorService s = (ScheduledExecutorService) p;
2034	+	ScheduledFuture<?> future;
2035	+
2036	+	recorder.reset();
2037	+	future = s.schedule(r, randomTimeout(), randomTimeUnit());
2038	+	assertFalse(future.isDone());
2039	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2040	+	assertSame(p, recorder.p);
2041	+
2042	+	recorder.reset();
2043	+	future = s.schedule(c, randomTimeout(), randomTimeUnit());
2044	+	assertFalse(future.isDone());
2045	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2046	+	assertSame(p, recorder.p);
2047	+
2048	+	recorder.reset();
2049	+	future = s.scheduleAtFixedRate(r, randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2050	+	assertFalse(future.isDone());
2051	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2052	+	assertSame(p, recorder.p);
2053	+
2054	+	recorder.reset();
2055	+	future = s.scheduleWithFixedDelay(r, randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2056	+	assertFalse(future.isDone());
2057	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2058	+	assertSame(p, recorder.p);
2059	+	}
2060	+	}
2061	+
2062	+	// Checking our custom handler above should be sufficient, but
2063	+	// we add some integration tests of standard handlers.
2064	+	final AtomicReference<Thread> thread = new AtomicReference<>();
2065	+	final Runnable setThread = () -> thread.set(Thread.currentThread());
2066	+
2067	+	setRejectedExecutionHandler(p, new ThreadPoolExecutor.AbortPolicy());
2068	+	try {
2069	+	p.execute(setThread);
2070	+	shouldThrow();
2071	+	} catch (RejectedExecutionException success) {}
2072	+	assertNull(thread.get());
2073	+
2074	+	setRejectedExecutionHandler(p, new ThreadPoolExecutor.DiscardPolicy());
2075	+	p.execute(setThread);
2076	+	assertNull(thread.get());
2077	+
2078	+	setRejectedExecutionHandler(p, new ThreadPoolExecutor.CallerRunsPolicy());
2079	+	p.execute(setThread);
2080	+	if (p.isShutdown())
2081	+	assertNull(thread.get());
2082	+	else
2083	+	assertSame(Thread.currentThread(), thread.get());
2084	+
2085	+	setRejectedExecutionHandler(p, savedHandler);
2086	+
2087	+	// check that pool was not perturbed by handlers
2088	+	assertEquals(savedTaskCount, p.getTaskCount());
2089	+	assertEquals(savedCompletedTaskCount, p.getCompletedTaskCount());
2090	+	assertEquals(savedQueueSize, p.getQueue().size());
2091	+	}
2092	+
2093	+	void assertCollectionsEquals(Collection<?> x, Collection<?> y) {
2094	+	assertEquals(x, y);
2095	+	assertEquals(y, x);
2096	+	assertEquals(x.isEmpty(), y.isEmpty());
2097	+	assertEquals(x.size(), y.size());
2098	+	if (x instanceof List) {
2099	+	assertEquals(x.toString(), y.toString());
2100	+	}
2101	+	if (x instanceof List || x instanceof Set) {
2102	+	assertEquals(x.hashCode(), y.hashCode());
2103	+	}
2104	+	if (x instanceof List || x instanceof Deque) {
2105	+	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
2106	+	assertTrue(Arrays.equals(x.toArray(new Object[0]),
2107	+	y.toArray(new Object[0])));
2108	+	}
2109	+	}
2110	+
2111	+	/**
2112	+	* A weaker form of assertCollectionsEquals which does not insist
2113	+	* that the two collections satisfy Object#equals(Object), since
2114	+	* they may use identity semantics as Deques do.
2115	+	*/
2116	+	void assertCollectionsEquivalent(Collection<?> x, Collection<?> y) {
2117	+	if (x instanceof List || x instanceof Set)
2118	+	assertCollectionsEquals(x, y);
2119	+	else {
2120	+	assertEquals(x.isEmpty(), y.isEmpty());
2121	+	assertEquals(x.size(), y.size());
2122	+	assertEquals(new HashSet(x), new HashSet(y));
2123	+	if (x instanceof Deque) {
2124	+	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
2125	+	assertTrue(Arrays.equals(x.toArray(new Object[0]),
2126	+	y.toArray(new Object[0])));
2127	+	}
2128	+	}
2129	+	}
2130		}

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