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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.49 by jsr166, Tue Jan 5 02:08:37 2010 UTC vs.
Revision 1.272 by dl, Tue Jan 26 13:33:06 2021 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.LockInfo;
53	>	import java.lang.management.ThreadInfo;
54	>	import java.lang.management.ThreadMXBean;
55	>	import java.lang.reflect.Constructor;
56	>	import java.lang.reflect.Method;
57	>	import java.lang.reflect.Modifier;
58	>	import java.security.CodeSource;
59	>	import java.security.Permission;
60	>	import java.security.PermissionCollection;
61	>	import java.security.Permissions;
62	>	import java.security.Policy;
63	>	import java.security.ProtectionDomain;
64	>	import java.security.SecurityPermission;
65	>	import java.util.ArrayList;
66	>	import java.util.Arrays;
67	>	import java.util.Collection;
68	>	import java.util.Collections;
69	>	import java.util.Date;
70	>	import java.util.Deque;
71	>	import java.util.Enumeration;
72	>	import java.util.HashSet;
73	>	import java.util.Iterator;
74	>	import java.util.List;
75	>	import java.util.NoSuchElementException;
76	>	import java.util.PropertyPermission;
77	>	import java.util.Queue;
78	>	import java.util.Set;
79	>	import java.util.concurrent.BlockingQueue;
80	>	import java.util.concurrent.Callable;
81	>	import java.util.concurrent.CountDownLatch;
82	>	import java.util.concurrent.CyclicBarrier;
83	>	import java.util.concurrent.ExecutionException;
84	>	import java.util.concurrent.Executor;
85	>	import java.util.concurrent.Executors;
86	>	import java.util.concurrent.ExecutorService;
87	>	import java.util.concurrent.ForkJoinPool;
88	>	import java.util.concurrent.Future;
89	>	import java.util.concurrent.FutureTask;
90	>	import java.util.concurrent.RecursiveAction;
91	>	import java.util.concurrent.RecursiveTask;
92	>	import java.util.concurrent.RejectedExecutionException;
93	>	import java.util.concurrent.RejectedExecutionHandler;
94	>	import java.util.concurrent.Semaphore;
95	>	import java.util.concurrent.ScheduledExecutorService;
96	>	import java.util.concurrent.ScheduledFuture;
97	>	import java.util.concurrent.SynchronousQueue;
98	>	import java.util.concurrent.ThreadFactory;
99	>	import java.util.concurrent.ThreadLocalRandom;
100	>	import java.util.concurrent.ThreadPoolExecutor;
101	>	import java.util.concurrent.TimeUnit;
102	>	import java.util.concurrent.TimeoutException;
103	>	import java.util.concurrent.atomic.AtomicBoolean;
104	>	import java.util.concurrent.atomic.AtomicReference;
105	>	import java.util.regex.Pattern;
106	>
107	>	import junit.framework.Test;
108	>	import junit.framework.TestCase;
109	>	import junit.framework.TestResult;
110	>	import junit.framework.TestSuite;
111
112		/**
113		* Base class for JSR166 Junit TCK tests.  Defines some constants,
#	Line 23 | Line 119 | import java.security.*;
119		*
120		* <ol>
121		*
122	<	* <li> All assertions in code running in generated threads must use
123	<	* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
124	<	* #threadAssertEquals}, or {@link #threadAssertNull}, (not
125	<	* <tt>fail</tt>, <tt>assertTrue</tt>, etc.) It is OK (but not
126	<	* particularly recommended) for other code to use these forms too.
127	<	* Only the most typically used JUnit assertion methods are defined
128	<	* this way, but enough to live with.</li>
122	>	* <li>All code not running in the main test thread (manually spawned threads
123	>	* or the common fork join pool) must be checked for failure (and completion!).
124	>	* Mechanisms that can be used to ensure this are:
125	>	*   <ol>
126	>	*   <li>Signalling via a synchronizer like AtomicInteger or CountDownLatch
127	>	*    that the task completed normally, which is checked before returning from
128	>	*    the test method in the main thread.
129	>	*   <li>Using the forms {@link #threadFail}, {@link #threadAssertTrue},
130	>	*    or {@link #threadAssertNull}, (not {@code fail}, {@code assertTrue}, etc.)
131	>	*    Only the most typically used JUnit assertion methods are defined
132	>	*    this way, but enough to live with.
133	>	*   <li>Recording failure explicitly using {@link #threadUnexpectedException}
134	>	*    or {@link #threadRecordFailure}.
135	>	*   <li>Using a wrapper like CheckedRunnable that uses one the mechanisms above.
136	>	*   </ol>
137		*
138	<	* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
139	<	* to invoke <tt>super.setUp</tt> and <tt>super.tearDown</tt> within
138	>	* <li>If you override {@link #setUp} or {@link #tearDown}, make sure
139	>	* to invoke {@code super.setUp} and {@code super.tearDown} within
140		* them. These methods are used to clear and check for thread
141	<	* assertion failures.</li>
141	>	* assertion failures.
142		*
143	<	* <li>All delays and timeouts must use one of the constants <tt>
144	<	* SHORT_DELAY_MS</tt>, <tt> SMALL_DELAY_MS</tt>, <tt> MEDIUM_DELAY_MS</tt>,
145	<	* <tt> LONG_DELAY_MS</tt>. The idea here is that a SHORT is always
143	>	* <li>All delays and timeouts must use one of the constants {@code
144	>	* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
145	>	* {@code LONG_DELAY_MS}. The idea here is that a SHORT is always
146		* discriminable from zero time, and always allows enough time for the
147		* small amounts of computation (creating a thread, calling a few
148		* methods, etc) needed to reach a timeout point. Similarly, a SMALL
149		* is always discriminable as larger than SHORT and smaller than
150		* MEDIUM.  And so on. These constants are set to conservative values,
151		* but even so, if there is ever any doubt, they can all be increased
152	<	* in one spot to rerun tests on slower platforms.</li>
152	>	* in one spot to rerun tests on slower platforms.
153		*
154	<	* <li> All threads generated must be joined inside each test case
155	<	* method (or <tt>fail</tt> to do so) before returning from the
156	<	* method. The <tt> joinPool</tt> method can be used to do this when
157	<	* using Executors.</li>
154	>	* Class Item is used for elements of collections and related
155	>	* purposes. Many tests rely on themir keys being equal to ints. To
156	>	* check these, methods mustEqual, mustContain, etc adapt the JUnit
157	>	* assert methods to intercept ints.
158	>	*
159	>	* <li>All threads generated must be joined inside each test case
160	>	* method (or {@code fail} to do so) before returning from the
161	>	* method. The {@code joinPool} method can be used to do this when
162	>	* using Executors.
163		*
164		* </ol>
165		*
166	<	* <p> <b>Other notes</b>
166	>	* <p><b>Other notes</b>
167		* <ul>
168		*
169	<	* <li> Usually, there is one testcase method per JSR166 method
169	>	* <li>Usually, there is one testcase method per JSR166 method
170		* covering "normal" operation, and then as many exception-testing
171		* methods as there are exceptions the method can throw. Sometimes
172		* there are multiple tests per JSR166 method when the different
173		* "normal" behaviors differ significantly. And sometimes testcases
174	<	* cover multiple methods when they cannot be tested in
66	<	* isolation.</li>
174	>	* cover multiple methods when they cannot be tested in isolation.
175		*
176	<	* <li> The documentation style for testcases is to provide as javadoc
176	>	* <li>The documentation style for testcases is to provide as javadoc
177		* a simple sentence or two describing the property that the testcase
178		* method purports to test. The javadocs do not say anything about how
179	<	* the property is tested. To find out, read the code.</li>
179	>	* the property is tested. To find out, read the code.
180		*
181	<	* <li> These tests are "conformance tests", and do not attempt to
181	>	* <li>These tests are "conformance tests", and do not attempt to
182		* test throughput, latency, scalability or other performance factors
183		* (see the separate "jtreg" tests for a set intended to check these
184		* for the most central aspects of functionality.) So, most tests use
185		* the smallest sensible numbers of threads, collection sizes, etc
186	<	* needed to check basic conformance.</li>
186	>	* needed to check basic conformance.
187		*
188		* <li>The test classes currently do not declare inclusion in
189		* any particular package to simplify things for people integrating
190	<	* them in TCK test suites.</li>
190	>	* them in TCK test suites.
191		*
192	<	* <li> As a convenience, the <tt>main</tt> of this class (JSR166TestCase)
193	<	* runs all JSR166 unit tests.</li>
192	>	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
193	>	* runs all JSR166 unit tests.
194		*
195		* </ul>
196		*/
#	Line 90 | Line 198 | public class JSR166TestCase extends Test
198		private static final boolean useSecurityManager =
199		Boolean.getBoolean("jsr166.useSecurityManager");
200
201	+	protected static final boolean expensiveTests =
202	+	Boolean.getBoolean("jsr166.expensiveTests");
203	+
204	+	/**
205	+	* If true, also run tests that are not part of the official tck
206	+	* because they test unspecified implementation details.
207	+	*/
208	+	protected static final boolean testImplementationDetails =
209	+	Boolean.getBoolean("jsr166.testImplementationDetails");
210	+
211	+	/**
212	+	* If true, report on stdout all "slow" tests, that is, ones that
213	+	* take more than profileThreshold milliseconds to execute.
214	+	*/
215	+	private static final boolean profileTests =
216	+	Boolean.getBoolean("jsr166.profileTests");
217	+
218	+	/**
219	+	* The number of milliseconds that tests are permitted for
220	+	* execution without being reported, when profileTests is set.
221	+	*/
222	+	private static final long profileThreshold =
223	+	Long.getLong("jsr166.profileThreshold", 100);
224	+
225	+	/**
226	+	* The number of repetitions per test (for tickling rare bugs).
227	+	*/
228	+	private static final int runsPerTest =
229	+	Integer.getInteger("jsr166.runsPerTest", 1);
230	+
231	+	/**
232	+	* The number of repetitions of the test suite (for finding leaks?).
233	+	*/
234	+	private static final int suiteRuns =
235	+	Integer.getInteger("jsr166.suiteRuns", 1);
236	+
237		/**
238	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
238	>	* Returns the value of the system property, or NaN if not defined.
239	>	*/
240	>	private static float systemPropertyValue(String name) {
241	>	String floatString = System.getProperty(name);
242	>	if (floatString == null)
243	>	return Float.NaN;
244	>	try {
245	>	return Float.parseFloat(floatString);
246	>	} catch (NumberFormatException ex) {
247	>	throw new IllegalArgumentException(
248	>	String.format("Bad float value in system property %s=%s",
249	>	name, floatString));
250	>	}
251	>	}
252	>
253	>	private static final ThreadMXBean THREAD_MXBEAN
254	>	= ManagementFactory.getThreadMXBean();
255	>
256	>	/**
257	>	* The scaling factor to apply to standard delays used in tests.
258	>	* May be initialized from any of:
259	>	* - the "jsr166.delay.factor" system property
260	>	* - the "test.timeout.factor" system property (as used by jtreg)
261	>	*   See: http://openjdk.java.net/jtreg/tag-spec.html
262	>	* - hard-coded fuzz factor when using a known slowpoke VM
263	>	*/
264	>	private static final float delayFactor = delayFactor();
265	>
266	>	private static float delayFactor() {
267	>	float x;
268	>	if (!Float.isNaN(x = systemPropertyValue("jsr166.delay.factor")))
269	>	return x;
270	>	if (!Float.isNaN(x = systemPropertyValue("test.timeout.factor")))
271	>	return x;
272	>	String prop = System.getProperty("java.vm.version");
273	>	if (prop != null && prop.matches(".*debug.*"))
274	>	return 4.0f; // How much slower is fastdebug than product?!
275	>	return 1.0f;
276	>	}
277	>
278	>	public JSR166TestCase() { super(); }
279	>	public JSR166TestCase(String name) { super(name); }
280	>
281	>	/**
282	>	* A filter for tests to run, matching strings of the form
283	>	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
284	>	* Usefully combined with jsr166.runsPerTest.
285	>	*/
286	>	private static final Pattern methodFilter = methodFilter();
287	>
288	>	private static Pattern methodFilter() {
289	>	String regex = System.getProperty("jsr166.methodFilter");
290	>	return (regex == null) ? null : Pattern.compile(regex);
291	>	}
292	>
293	>	// Instrumentation to debug very rare, but very annoying hung test runs.
294	>	static volatile TestCase currentTestCase;
295	>	// static volatile int currentRun = 0;
296	>	static {
297	>	Runnable wedgedTestDetector = new Runnable() { public void run() {
298	>	// Avoid spurious reports with enormous runsPerTest.
299	>	// A single test case run should never take more than 1 second.
300	>	// But let's cap it at the high end too ...
301	>	final int timeoutMinutesMin = Math.max(runsPerTest / 60, 1)
302	>	* Math.max((int) delayFactor, 1);
303	>	final int timeoutMinutes = Math.min(15, timeoutMinutesMin);
304	>	for (TestCase lastTestCase = currentTestCase;;) {
305	>	try { MINUTES.sleep(timeoutMinutes); }
306	>	catch (InterruptedException unexpected) { break; }
307	>	if (lastTestCase == currentTestCase) {
308	>	System.err.printf(
309	>	"Looks like we're stuck running test: %s%n",
310	>	lastTestCase);
311	>	//                     System.err.printf(
312	>	//                         "Looks like we're stuck running test: %s (%d/%d)%n",
313	>	//                         lastTestCase, currentRun, runsPerTest);
314	>	//                     System.err.println("availableProcessors=" +
315	>	//                         Runtime.getRuntime().availableProcessors());
316	>	//                     System.err.printf("cpu model = %s%n", cpuModel());
317	>	dumpTestThreads();
318	>	// one stack dump is probably enough; more would be spam
319	>	break;
320	>	}
321	>	lastTestCase = currentTestCase;
322	>	}}};
323	>	Thread thread = new Thread(wedgedTestDetector, "WedgedTestDetector");
324	>	thread.setDaemon(true);
325	>	thread.start();
326	>	}
327	>
328	>	//     public static String cpuModel() {
329	>	//         try {
330	>	//             java.util.regex.Matcher matcher
331	>	//               = Pattern.compile("model name\\s*: (.*)")
332	>	//                 .matcher(new String(
333	>	//                     java.nio.file.Files.readAllBytes(
334	>	//                         java.nio.file.Paths.get("/proc/cpuinfo")), "UTF-8"));
335	>	//             matcher.find();
336	>	//             return matcher.group(1);
337	>	//         } catch (Exception ex) { return null; }
338	>	//     }
339	>
340	>	public void runBare() throws Throwable {
341	>	currentTestCase = this;
342	>	if (methodFilter == null
343	>	|| methodFilter.matcher(toString()).find())
344	>	super.runBare();
345	>	}
346	>
347	>	protected void runTest() throws Throwable {
348	>	for (int i = 0; i < runsPerTest; i++) {
349	>	// currentRun = i;
350	>	if (profileTests)
351	>	runTestProfiled();
352	>	else
353	>	super.runTest();
354	>	}
355	>	}
356	>
357	>	protected void runTestProfiled() throws Throwable {
358	>	for (int i = 0; i < 2; i++) {
359	>	long startTime = System.nanoTime();
360	>	super.runTest();
361	>	long elapsedMillis = millisElapsedSince(startTime);
362	>	if (elapsedMillis < profileThreshold)
363	>	break;
364	>	// Never report first run of any test; treat it as a
365	>	// warmup run, notably to trigger all needed classloading,
366	>	if (i > 0)
367	>	System.out.printf("%s: %d%n", toString(), elapsedMillis);
368	>	}
369	>	}
370	>
371	>	/**
372	>	* Runs all JSR166 unit tests using junit.textui.TestRunner.
373		*/
374		public static void main(String[] args) {
375	+	main(suite(), args);
376	+	}
377	+
378	+	static class PithyResultPrinter extends junit.textui.ResultPrinter {
379	+	PithyResultPrinter(java.io.PrintStream writer) { super(writer); }
380	+	long runTime;
381	+	public void startTest(Test test) {}
382	+	protected void printHeader(long runTime) {
383	+	this.runTime = runTime; // defer printing for later
384	+	}
385	+	protected void printFooter(TestResult result) {
386	+	if (result.wasSuccessful()) {
387	+	getWriter().println("OK (" + result.runCount() + " tests)"
388	+	+ "  Time: " + elapsedTimeAsString(runTime));
389	+	} else {
390	+	getWriter().println("Time: " + elapsedTimeAsString(runTime));
391	+	super.printFooter(result);
392	+	}
393	+	}
394	+	}
395	+
396	+	/**
397	+	* Returns a TestRunner that doesn't bother with unnecessary
398	+	* fluff, like printing a "." for each test case.
399	+	*/
400	+	static junit.textui.TestRunner newPithyTestRunner() {
401	+	junit.textui.TestRunner runner = new junit.textui.TestRunner();
402	+	runner.setPrinter(new PithyResultPrinter(System.out));
403	+	return runner;
404	+	}
405	+
406	+	/**
407	+	* Runs all unit tests in the given test suite.
408	+	* Actual behavior influenced by jsr166.* system properties.
409	+	*/
410	+	static void main(Test suite, String[] args) {
411		if (useSecurityManager) {
412		System.err.println("Setting a permissive security manager");
413		Policy.setPolicy(permissivePolicy());
414		System.setSecurityManager(new SecurityManager());
415		}
416	<	int iters = 1;
417	<	if (args.length > 0)
418	<	iters = Integer.parseInt(args[0]);
419	<	Test s = suite();
106	<	for (int i = 0; i < iters; ++i) {
107	<	junit.textui.TestRunner.run(s);
416	>	for (int i = 0; i < suiteRuns; i++) {
417	>	TestResult result = newPithyTestRunner().doRun(suite);
418	>	if (!result.wasSuccessful())
419	>	System.exit(1);
420		System.gc();
421		System.runFinalization();
422		}
111	–	System.exit(0);
423		}
424
425	+	public static TestSuite newTestSuite(Object... suiteOrClasses) {
426	+	TestSuite suite = new TestSuite();
427	+	for (Object suiteOrClass : suiteOrClasses) {
428	+	if (suiteOrClass instanceof TestSuite)
429	+	suite.addTest((TestSuite) suiteOrClass);
430	+	else if (suiteOrClass instanceof Class)
431	+	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
432	+	else
433	+	throw new ClassCastException("not a test suite or class");
434	+	}
435	+	return suite;
436	+	}
437	+
438	+	public static void addNamedTestClasses(TestSuite suite,
439	+	String... testClassNames) {
440	+	for (String testClassName : testClassNames) {
441	+	try {
442	+	Class<?> testClass = Class.forName(testClassName);
443	+	Method m = testClass.getDeclaredMethod("suite");
444	+	suite.addTest(newTestSuite((Test)m.invoke(null)));
445	+	} catch (ReflectiveOperationException e) {
446	+	throw new AssertionError("Missing test class", e);
447	+	}
448	+	}
449	+	}
450	+
451	+	public static final double JAVA_CLASS_VERSION;
452	+	public static final String JAVA_SPECIFICATION_VERSION;
453	+	static {
454	+	try {
455	+	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
456	+	new java.security.PrivilegedAction<Double>() {
457	+	public Double run() {
458	+	return Double.valueOf(System.getProperty("java.class.version"));}});
459	+	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
460	+	new java.security.PrivilegedAction<String>() {
461	+	public String run() {
462	+	return System.getProperty("java.specification.version");}});
463	+	} catch (Throwable t) {
464	+	throw new Error(t);
465	+	}
466	+	}
467	+
468	+	public static boolean atLeastJava6()  { return JAVA_CLASS_VERSION >= 50.0; }
469	+	public static boolean atLeastJava7()  { return JAVA_CLASS_VERSION >= 51.0; }
470	+	public static boolean atLeastJava8()  { return JAVA_CLASS_VERSION >= 52.0; }
471	+	public static boolean atLeastJava9()  { return JAVA_CLASS_VERSION >= 53.0; }
472	+	public static boolean atLeastJava10() { return JAVA_CLASS_VERSION >= 54.0; }
473	+	public static boolean atLeastJava11() { return JAVA_CLASS_VERSION >= 55.0; }
474	+	public static boolean atLeastJava12() { return JAVA_CLASS_VERSION >= 56.0; }
475	+	public static boolean atLeastJava13() { return JAVA_CLASS_VERSION >= 57.0; }
476	+	public static boolean atLeastJava14() { return JAVA_CLASS_VERSION >= 58.0; }
477	+	public static boolean atLeastJava15() { return JAVA_CLASS_VERSION >= 59.0; }
478	+	public static boolean atLeastJava16() { return JAVA_CLASS_VERSION >= 60.0; }
479	+	public static boolean atLeastJava17() { return JAVA_CLASS_VERSION >= 61.0; }
480	+
481		/**
482	<	* Collects all JSR166 unit tests as one suite
482	>	* Collects all JSR166 unit tests as one suite.
483		*/
484		public static Test suite() {
485	<	TestSuite suite = new TestSuite("JSR166 Unit Tests");
486	<
487	<	suite.addTest(new TestSuite(ForkJoinPoolTest.class));
488	<	suite.addTest(new TestSuite(ForkJoinTaskTest.class));
489	<	suite.addTest(new TestSuite(RecursiveActionTest.class));
490	<	suite.addTest(new TestSuite(RecursiveTaskTest.class));
491	<	suite.addTest(new TestSuite(LinkedTransferQueueTest.class));
492	<	suite.addTest(new TestSuite(PhaserTest.class));
493	<	suite.addTest(new TestSuite(ThreadLocalRandomTest.class));
494	<	suite.addTest(new TestSuite(AbstractExecutorServiceTest.class));
495	<	suite.addTest(new TestSuite(AbstractQueueTest.class));
496	<	suite.addTest(new TestSuite(AbstractQueuedSynchronizerTest.class));
497	<	suite.addTest(new TestSuite(AbstractQueuedLongSynchronizerTest.class));
498	<	suite.addTest(new TestSuite(ArrayBlockingQueueTest.class));
499	<	suite.addTest(new TestSuite(ArrayDequeTest.class));
500	<	suite.addTest(new TestSuite(AtomicBooleanTest.class));
501	<	suite.addTest(new TestSuite(AtomicIntegerArrayTest.class));
502	<	suite.addTest(new TestSuite(AtomicIntegerFieldUpdaterTest.class));
503	<	suite.addTest(new TestSuite(AtomicIntegerTest.class));
504	<	suite.addTest(new TestSuite(AtomicLongArrayTest.class));
505	<	suite.addTest(new TestSuite(AtomicLongFieldUpdaterTest.class));
506	<	suite.addTest(new TestSuite(AtomicLongTest.class));
507	<	suite.addTest(new TestSuite(AtomicMarkableReferenceTest.class));
508	<	suite.addTest(new TestSuite(AtomicReferenceArrayTest.class));
509	<	suite.addTest(new TestSuite(AtomicReferenceFieldUpdaterTest.class));
510	<	suite.addTest(new TestSuite(AtomicReferenceTest.class));
511	<	suite.addTest(new TestSuite(AtomicStampedReferenceTest.class));
512	<	suite.addTest(new TestSuite(ConcurrentHashMapTest.class));
513	<	suite.addTest(new TestSuite(ConcurrentLinkedQueueTest.class));
514	<	suite.addTest(new TestSuite(ConcurrentSkipListMapTest.class));
515	<	suite.addTest(new TestSuite(ConcurrentSkipListSubMapTest.class));
516	<	suite.addTest(new TestSuite(ConcurrentSkipListSetTest.class));
517	<	suite.addTest(new TestSuite(ConcurrentSkipListSubSetTest.class));
518	<	suite.addTest(new TestSuite(CopyOnWriteArrayListTest.class));
519	<	suite.addTest(new TestSuite(CopyOnWriteArraySetTest.class));
520	<	suite.addTest(new TestSuite(CountDownLatchTest.class));
521	<	suite.addTest(new TestSuite(CyclicBarrierTest.class));
522	<	suite.addTest(new TestSuite(DelayQueueTest.class));
523	<	suite.addTest(new TestSuite(EntryTest.class));
524	<	suite.addTest(new TestSuite(ExchangerTest.class));
525	<	suite.addTest(new TestSuite(ExecutorsTest.class));
526	<	suite.addTest(new TestSuite(ExecutorCompletionServiceTest.class));
527	<	suite.addTest(new TestSuite(FutureTaskTest.class));
528	<	suite.addTest(new TestSuite(LinkedBlockingDequeTest.class));
529	<	suite.addTest(new TestSuite(LinkedBlockingQueueTest.class));
530	<	suite.addTest(new TestSuite(LinkedListTest.class));
531	<	suite.addTest(new TestSuite(LockSupportTest.class));
532	<	suite.addTest(new TestSuite(PriorityBlockingQueueTest.class));
533	<	suite.addTest(new TestSuite(PriorityQueueTest.class));
534	<	suite.addTest(new TestSuite(ReentrantLockTest.class));
535	<	suite.addTest(new TestSuite(ReentrantReadWriteLockTest.class));
536	<	suite.addTest(new TestSuite(ScheduledExecutorTest.class));
537	<	suite.addTest(new TestSuite(ScheduledExecutorSubclassTest.class));
538	<	suite.addTest(new TestSuite(SemaphoreTest.class));
539	<	suite.addTest(new TestSuite(SynchronousQueueTest.class));
540	<	suite.addTest(new TestSuite(SystemTest.class));
541	<	suite.addTest(new TestSuite(ThreadLocalTest.class));
542	<	suite.addTest(new TestSuite(ThreadPoolExecutorTest.class));
543	<	suite.addTest(new TestSuite(ThreadPoolExecutorSubclassTest.class));
544	<	suite.addTest(new TestSuite(ThreadTest.class));
545	<	suite.addTest(new TestSuite(TimeUnitTest.class));
546	<	suite.addTest(new TestSuite(TreeMapTest.class));
547	<	suite.addTest(new TestSuite(TreeSetTest.class));
548	<	suite.addTest(new TestSuite(TreeSubMapTest.class));
549	<	suite.addTest(new TestSuite(TreeSubSetTest.class));
485	>	// Java7+ test classes
486	>	TestSuite suite = newTestSuite(
487	>	ForkJoinPoolTest.suite(),
488	>	ForkJoinTaskTest.suite(),
489	>	RecursiveActionTest.suite(),
490	>	RecursiveTaskTest.suite(),
491	>	LinkedTransferQueueTest.suite(),
492	>	PhaserTest.suite(),
493	>	ThreadLocalRandomTest.suite(),
494	>	AbstractExecutorServiceTest.suite(),
495	>	AbstractQueueTest.suite(),
496	>	AbstractQueuedSynchronizerTest.suite(),
497	>	AbstractQueuedLongSynchronizerTest.suite(),
498	>	ArrayBlockingQueueTest.suite(),
499	>	ArrayDequeTest.suite(),
500	>	ArrayListTest.suite(),
501	>	AtomicBooleanTest.suite(),
502	>	AtomicIntegerArrayTest.suite(),
503	>	AtomicIntegerFieldUpdaterTest.suite(),
504	>	AtomicIntegerTest.suite(),
505	>	AtomicLongArrayTest.suite(),
506	>	AtomicLongFieldUpdaterTest.suite(),
507	>	AtomicLongTest.suite(),
508	>	AtomicMarkableReferenceTest.suite(),
509	>	AtomicReferenceArrayTest.suite(),
510	>	AtomicReferenceFieldUpdaterTest.suite(),
511	>	AtomicReferenceTest.suite(),
512	>	AtomicStampedReferenceTest.suite(),
513	>	ConcurrentHashMapTest.suite(),
514	>	ConcurrentLinkedDequeTest.suite(),
515	>	ConcurrentLinkedQueueTest.suite(),
516	>	ConcurrentSkipListMapTest.suite(),
517	>	ConcurrentSkipListSubMapTest.suite(),
518	>	ConcurrentSkipListSetTest.suite(),
519	>	ConcurrentSkipListSubSetTest.suite(),
520	>	CopyOnWriteArrayListTest.suite(),
521	>	CopyOnWriteArraySetTest.suite(),
522	>	CountDownLatchTest.suite(),
523	>	CountedCompleterTest.suite(),
524	>	CyclicBarrierTest.suite(),
525	>	DelayQueueTest.suite(),
526	>	EntryTest.suite(),
527	>	ExchangerTest.suite(),
528	>	ExecutorsTest.suite(),
529	>	ExecutorCompletionServiceTest.suite(),
530	>	FutureTaskTest.suite(),
531	>	HashtableTest.suite(),
532	>	LinkedBlockingDequeTest.suite(),
533	>	LinkedBlockingQueueTest.suite(),
534	>	LinkedListTest.suite(),
535	>	LockSupportTest.suite(),
536	>	PriorityBlockingQueueTest.suite(),
537	>	PriorityQueueTest.suite(),
538	>	ReentrantLockTest.suite(),
539	>	ReentrantReadWriteLockTest.suite(),
540	>	ScheduledExecutorTest.suite(),
541	>	ScheduledExecutorSubclassTest.suite(),
542	>	SemaphoreTest.suite(),
543	>	SynchronousQueueTest.suite(),
544	>	SystemTest.suite(),
545	>	ThreadLocalTest.suite(),
546	>	ThreadPoolExecutorTest.suite(),
547	>	ThreadPoolExecutorSubclassTest.suite(),
548	>	ThreadTest.suite(),
549	>	TimeUnitTest.suite(),
550	>	TreeMapTest.suite(),
551	>	TreeSetTest.suite(),
552	>	TreeSubMapTest.suite(),
553	>	TreeSubSetTest.suite(),
554	>	VectorTest.suite());
555	>
556	>	// Java8+ test classes
557	>	if (atLeastJava8()) {
558	>	String[] java8TestClassNames = {
559	>	"ArrayDeque8Test",
560	>	"Atomic8Test",
561	>	"CompletableFutureTest",
562	>	"ConcurrentHashMap8Test",
563	>	"CountedCompleter8Test",
564	>	"DoubleAccumulatorTest",
565	>	"DoubleAdderTest",
566	>	"ForkJoinPool8Test",
567	>	"ForkJoinTask8Test",
568	>	"HashMapTest",
569	>	"LinkedBlockingDeque8Test",
570	>	"LinkedBlockingQueue8Test",
571	>	"LinkedHashMapTest",
572	>	"LongAccumulatorTest",
573	>	"LongAdderTest",
574	>	"SplittableRandomTest",
575	>	"StampedLockTest",
576	>	"SubmissionPublisherTest",
577	>	"ThreadLocalRandom8Test",
578	>	"TimeUnit8Test",
579	>	};
580	>	addNamedTestClasses(suite, java8TestClassNames);
581	>	}
582	>
583	>	// Java9+ test classes
584	>	if (atLeastJava9()) {
585	>	String[] java9TestClassNames = {
586	>	"AtomicBoolean9Test",
587	>	"AtomicInteger9Test",
588	>	"AtomicIntegerArray9Test",
589	>	"AtomicLong9Test",
590	>	"AtomicLongArray9Test",
591	>	"AtomicReference9Test",
592	>	"AtomicReferenceArray9Test",
593	>	"ExecutorCompletionService9Test",
594	>	"ForkJoinPool9Test",
595	>	};
596	>	addNamedTestClasses(suite, java9TestClassNames);
597	>	}
598
599		return suite;
600		}
601
602	+	/** Returns list of junit-style test method names in given class. */
603	+	public static ArrayList<String> testMethodNames(Class<?> testClass) {
604	+	Method[] methods = testClass.getDeclaredMethods();
605	+	ArrayList<String> names = new ArrayList<>(methods.length);
606	+	for (Method method : methods) {
607	+	if (method.getName().startsWith("test")
608	+	&& Modifier.isPublic(method.getModifiers())
609	+	// method.getParameterCount() requires jdk8+
610	+	&& method.getParameterTypes().length == 0) {
611	+	names.add(method.getName());
612	+	}
613	+	}
614	+	return names;
615	+	}
616	+
617	+	/**
618	+	* Returns junit-style testSuite for the given test class, but
619	+	* parameterized by passing extra data to each test.
620	+	*/
621	+	public static <ExtraData> Test parameterizedTestSuite
622	+	(Class<? extends JSR166TestCase> testClass,
623	+	Class<ExtraData> dataClass,
624	+	ExtraData data) {
625	+	try {
626	+	TestSuite suite = new TestSuite();
627	+	Constructor c =
628	+	testClass.getDeclaredConstructor(dataClass, String.class);
629	+	for (String methodName : testMethodNames(testClass))
630	+	suite.addTest((Test) c.newInstance(data, methodName));
631	+	return suite;
632	+	} catch (ReflectiveOperationException e) {
633	+	throw new AssertionError(e);
634	+	}
635	+	}
636	+
637	+	/**
638	+	* Returns junit-style testSuite for the jdk8 extension of the
639	+	* given test class, but parameterized by passing extra data to
640	+	* each test.  Uses reflection to allow compilation in jdk7.
641	+	*/
642	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
643	+	(Class<? extends JSR166TestCase> testClass,
644	+	Class<ExtraData> dataClass,
645	+	ExtraData data) {
646	+	if (atLeastJava8()) {
647	+	String name = testClass.getName();
648	+	String name8 = name.replaceAll("Test$", "8Test");
649	+	if (name.equals(name8)) throw new AssertionError(name);
650	+	try {
651	+	return (Test)
652	+	Class.forName(name8)
653	+	.getMethod("testSuite", dataClass)
654	+	.invoke(null, data);
655	+	} catch (ReflectiveOperationException e) {
656	+	throw new AssertionError(e);
657	+	}
658	+	} else {
659	+	return new TestSuite();
660	+	}
661	+	}
662	+
663	+	// Delays for timing-dependent tests, in milliseconds.
664
665		public static long SHORT_DELAY_MS;
666		public static long SMALL_DELAY_MS;
667		public static long MEDIUM_DELAY_MS;
668		public static long LONG_DELAY_MS;
669
670	+	/**
671	+	* A delay significantly longer than LONG_DELAY_MS.
672	+	* Use this in a thread that is waited for via awaitTermination(Thread).
673	+	*/
674	+	public static long LONGER_DELAY_MS;
675	+
676	+	private static final long RANDOM_TIMEOUT;
677	+	private static final long RANDOM_EXPIRED_TIMEOUT;
678	+	private static final TimeUnit RANDOM_TIMEUNIT;
679	+	static {
680	+	ThreadLocalRandom rnd = ThreadLocalRandom.current();
681	+	long[] timeouts = { Long.MIN_VALUE, -1, 0, 1, Long.MAX_VALUE };
682	+	RANDOM_TIMEOUT = timeouts[rnd.nextInt(timeouts.length)];
683	+	RANDOM_EXPIRED_TIMEOUT = timeouts[rnd.nextInt(3)];
684	+	TimeUnit[] timeUnits = TimeUnit.values();
685	+	RANDOM_TIMEUNIT = timeUnits[rnd.nextInt(timeUnits.length)];
686	+	}
687
688		/**
689	<	* Returns the shortest timed delay. This could
196	<	* be reimplemented to use for example a Property.
689	>	* Returns a timeout for use when any value at all will do.
690		*/
691	<	protected long getShortDelay() {
692	<	return 50;
691	>	static long randomTimeout() { return RANDOM_TIMEOUT; }
692	>
693	>	/**
694	>	* Returns a timeout that means "no waiting", i.e. not positive.
695	>	*/
696	>	static long randomExpiredTimeout() { return RANDOM_EXPIRED_TIMEOUT; }
697	>
698	>	/**
699	>	* Returns a random non-null TimeUnit.
700	>	*/
701	>	static TimeUnit randomTimeUnit() { return RANDOM_TIMEUNIT; }
702	>
703	>	/**
704	>	* Returns a random boolean; a "coin flip".
705	>	*/
706	>	static boolean randomBoolean() {
707	>	return ThreadLocalRandom.current().nextBoolean();
708	>	}
709	>
710	>	/**
711	>	* Returns a random element from given choices.
712	>	*/
713	>	<T> T chooseRandomly(List<T> choices) {
714	>	return choices.get(ThreadLocalRandom.current().nextInt(choices.size()));
715	>	}
716	>
717	>	/**
718	>	* Returns a random element from given choices.
719	>	*/
720	>	@SuppressWarnings("unchecked")
721	>	<T> T chooseRandomly(T... choices) {
722	>	return choices[ThreadLocalRandom.current().nextInt(choices.length)];
723		}
724
725	+	/**
726	+	* Returns the shortest timed delay. This can be scaled up for
727	+	* slow machines using the jsr166.delay.factor system property,
728	+	* or via jtreg's -timeoutFactor: flag.
729	+	* http://openjdk.java.net/jtreg/command-help.html
730	+	*/
731	+	protected long getShortDelay() {
732	+	return (long) (50 * delayFactor);
733	+	}
734
735		/**
736		* Sets delays as multiples of SHORT_DELAY.
737		*/
738		protected void setDelays() {
739		SHORT_DELAY_MS = getShortDelay();
740	<	SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
740	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
741		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
742	<	LONG_DELAY_MS = SHORT_DELAY_MS * 50;
742	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
743	>	LONGER_DELAY_MS = 2 * LONG_DELAY_MS;
744		}
745
746	+	private static final long TIMEOUT_DELAY_MS
747	+	= (long) (12.0 * Math.cbrt(delayFactor));
748	+
749		/**
750	<	* Flag set true if any threadAssert methods fail
750	>	* Returns a timeout in milliseconds to be used in tests that verify
751	>	* that operations block or time out.  We want this to be longer
752	>	* than the OS scheduling quantum, but not too long, so don't scale
753	>	* linearly with delayFactor; we use "crazy" cube root instead.
754		*/
755	<	volatile boolean threadFailed;
755	>	static long timeoutMillis() {
756	>	return TIMEOUT_DELAY_MS;
757	>	}
758
759		/**
760	<	* Initializes test to indicate that no thread assertions have failed
760	>	* Returns a new Date instance representing a time at least
761	>	* delayMillis milliseconds in the future.
762		*/
763	+	Date delayedDate(long delayMillis) {
764	+	// Add 1 because currentTimeMillis is known to round into the past.
765	+	return new Date(System.currentTimeMillis() + delayMillis + 1);
766	+	}
767	+
768	+	/**
769	+	* The first exception encountered if any threadAssertXXX method fails.
770	+	*/
771	+	private final AtomicReference<Throwable> threadFailure
772	+	= new AtomicReference<>(null);
773	+
774	+	/**
775	+	* Records an exception so that it can be rethrown later in the test
776	+	* harness thread, triggering a test case failure.  Only the first
777	+	* failure is recorded; subsequent calls to this method from within
778	+	* the same test have no effect.
779	+	*/
780	+	public void threadRecordFailure(Throwable t) {
781	+	System.err.println(t);
782	+	if (threadFailure.compareAndSet(null, t))
783	+	dumpTestThreads();
784	+	}
785	+
786		public void setUp() {
787		setDelays();
788	<	threadFailed = false;
788	>	}
789	>
790	>	void tearDownFail(String format, Object... args) {
791	>	String msg = toString() + ": " + String.format(format, args);
792	>	System.err.println(msg);
793	>	dumpTestThreads();
794	>	throw new AssertionError(msg);
795		}
796
797		/**
798	<	* Triggers test case failure if any thread assertions have failed
799	<	*/
800	<	public void tearDown() {
801	<	assertFalse(threadFailed);
798	>	* Extra checks that get done for all test cases.
799	>	*
800	>	* Triggers test case failure if any thread assertions have failed,
801	>	* by rethrowing, in the test harness thread, any exception recorded
802	>	* earlier by threadRecordFailure.
803	>	*
804	>	* Triggers test case failure if interrupt status is set in the main thread.
805	>	*/
806	>	public void tearDown() throws Exception {
807	>	Throwable t = threadFailure.getAndSet(null);
808	>	if (t != null) {
809	>	if (t instanceof Error)
810	>	throw (Error) t;
811	>	else if (t instanceof RuntimeException)
812	>	throw (RuntimeException) t;
813	>	else if (t instanceof Exception)
814	>	throw (Exception) t;
815	>	else
816	>	throw new AssertionError(t.toString(), t);
817	>	}
818	>
819	>	if (Thread.interrupted())
820	>	tearDownFail("interrupt status set in main thread");
821	>
822	>	checkForkJoinPoolThreadLeaks();
823	>	}
824	>
825	>	/**
826	>	* Finds missing PoolCleaners
827	>	*/
828	>	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
829	>	Thread[] survivors = new Thread[7];
830	>	int count = Thread.enumerate(survivors);
831	>	for (int i = 0; i < count; i++) {
832	>	Thread thread = survivors[i];
833	>	String name = thread.getName();
834	>	if (name.startsWith("ForkJoinPool-")) {
835	>	// give thread some time to terminate
836	>	thread.join(LONG_DELAY_MS);
837	>	if (thread.isAlive())
838	>	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
839	>	thread);
840	>	}
841	>	}
842	>
843	>	if (!ForkJoinPool.commonPool()
844	>	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
845	>	tearDownFail("ForkJoin common pool thread stuck");
846		}
847
848		/**
849	<	* Fail, also setting status to indicate current testcase should fail
849	>	* Just like fail(reason), but additionally recording (using
850	>	* threadRecordFailure) any AssertionError thrown, so that the
851	>	* current testcase will fail.
852		*/
853		public void threadFail(String reason) {
854	<	threadFailed = true;
855	<	fail(reason);
854	>	try {
855	>	fail(reason);
856	>	} catch (AssertionError fail) {
857	>	threadRecordFailure(fail);
858	>	throw fail;
859	>	}
860		}
861
862		/**
863	<	* If expression not true, set status to indicate current testcase
864	<	* should fail
863	>	* Just like assertTrue(b), but additionally recording (using
864	>	* threadRecordFailure) any AssertionError thrown, so that the
865	>	* current testcase will fail.
866		*/
867		public void threadAssertTrue(boolean b) {
868	<	if (!b) {
247	<	threadFailed = true;
868	>	try {
869		assertTrue(b);
870	+	} catch (AssertionError fail) {
871	+	threadRecordFailure(fail);
872	+	throw fail;
873		}
874		}
875
876		/**
877	<	* If expression not false, set status to indicate current testcase
878	<	* should fail
877	>	* Just like assertFalse(b), but additionally recording (using
878	>	* threadRecordFailure) any AssertionError thrown, so that the
879	>	* current testcase will fail.
880		*/
881		public void threadAssertFalse(boolean b) {
882	<	if (b) {
258	<	threadFailed = true;
882	>	try {
883		assertFalse(b);
884	+	} catch (AssertionError fail) {
885	+	threadRecordFailure(fail);
886	+	throw fail;
887		}
888		}
889
890		/**
891	<	* If argument not null, set status to indicate current testcase
892	<	* should fail
891	>	* Just like assertNull(x), but additionally recording (using
892	>	* threadRecordFailure) any AssertionError thrown, so that the
893	>	* current testcase will fail.
894		*/
895		public void threadAssertNull(Object x) {
896	<	if (x != null) {
269	<	threadFailed = true;
896	>	try {
897		assertNull(x);
898	+	} catch (AssertionError fail) {
899	+	threadRecordFailure(fail);
900	+	throw fail;
901		}
902		}
903
904		/**
905	<	* If arguments not equal, set status to indicate current testcase
906	<	* should fail
905	>	* Just like assertEquals(x, y), but additionally recording (using
906	>	* threadRecordFailure) any AssertionError thrown, so that the
907	>	* current testcase will fail.
908		*/
909		public void threadAssertEquals(long x, long y) {
910	<	if (x != y) {
280	<	threadFailed = true;
910	>	try {
911		assertEquals(x, y);
912	+	} catch (AssertionError fail) {
913	+	threadRecordFailure(fail);
914	+	throw fail;
915		}
916		}
917
918		/**
919	<	* If arguments not equal, set status to indicate current testcase
920	<	* should fail
919	>	* Just like assertEquals(x, y), but additionally recording (using
920	>	* threadRecordFailure) any AssertionError thrown, so that the
921	>	* current testcase will fail.
922		*/
923		public void threadAssertEquals(Object x, Object y) {
924	<	if (x != y && (x == null || !x.equals(y))) {
291	<	threadFailed = true;
924	>	try {
925		assertEquals(x, y);
926	+	} catch (AssertionError fail) {
927	+	threadRecordFailure(fail);
928	+	throw fail;
929	+	} catch (Throwable fail) {
930	+	threadUnexpectedException(fail);
931		}
932		}
933
934		/**
935	<	* threadFail with message "should throw exception"
935	>	* Just like assertSame(x, y), but additionally recording (using
936	>	* threadRecordFailure) any AssertionError thrown, so that the
937	>	* current testcase will fail.
938	>	*/
939	>	public void threadAssertSame(Object x, Object y) {
940	>	try {
941	>	assertSame(x, y);
942	>	} catch (AssertionError fail) {
943	>	threadRecordFailure(fail);
944	>	throw fail;
945	>	}
946	>	}
947	>
948	>	/**
949	>	* Calls threadFail with message "should throw exception".
950		*/
951		public void threadShouldThrow() {
952	<	threadFailed = true;
301	<	fail("should throw exception");
952	>	threadFail("should throw exception");
953		}
954
955		/**
956	<	* threadFail with message "should throw" + exceptionName
956	>	* Calls threadFail with message "should throw" + exceptionName.
957		*/
958		public void threadShouldThrow(String exceptionName) {
959	<	threadFailed = true;
960	<	fail("should throw " + exceptionName);
959	>	threadFail("should throw " + exceptionName);
960	>	}
961	>
962	>	/**
963	>	* Records the given exception using {@link #threadRecordFailure},
964	>	* then rethrows the exception, wrapping it in an AssertionError
965	>	* if necessary.
966	>	*/
967	>	public void threadUnexpectedException(Throwable t) {
968	>	threadRecordFailure(t);
969	>	t.printStackTrace();
970	>	if (t instanceof RuntimeException)
971	>	throw (RuntimeException) t;
972	>	else if (t instanceof Error)
973	>	throw (Error) t;
974	>	else
975	>	throw new AssertionError("unexpected exception: " + t, t);
976	>	}
977	>
978	>	/**
979	>	* Delays, via Thread.sleep, for the given millisecond delay, but
980	>	* if the sleep is shorter than specified, may re-sleep or yield
981	>	* until time elapses.  Ensures that the given time, as measured
982	>	* by System.nanoTime(), has elapsed.
983	>	*/
984	>	static void delay(long millis) throws InterruptedException {
985	>	long nanos = millis * (1000 * 1000);
986	>	final long wakeupTime = System.nanoTime() + nanos;
987	>	do {
988	>	if (millis > 0L)
989	>	Thread.sleep(millis);
990	>	else // too short to sleep
991	>	Thread.yield();
992	>	nanos = wakeupTime - System.nanoTime();
993	>	millis = nanos / (1000 * 1000);
994	>	} while (nanos >= 0L);
995		}
996
997		/**
998	<	* threadFail with message "Unexpected exception"
998	>	* Allows use of try-with-resources with per-test thread pools.
999		*/
1000	<	public void threadUnexpectedException() {
1001	<	threadFailed = true;
1002	<	fail("Unexpected exception");
1000	>	class PoolCleaner implements AutoCloseable {
1001	>	private final ExecutorService pool;
1002	>	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
1003	>	public void close() { joinPool(pool); }
1004		}
1005
1006		/**
1007	<	* threadFail with message "Unexpected exception", with argument
1007	>	* An extension of PoolCleaner that has an action to release the pool.
1008		*/
1009	<	public void threadUnexpectedException(Throwable ex) {
1010	<	threadFailed = true;
1011	<	ex.printStackTrace();
1012	<	fail("Unexpected exception: " + ex);
1009	>	class PoolCleanerWithReleaser extends PoolCleaner {
1010	>	private final Runnable releaser;
1011	>	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
1012	>	super(pool);
1013	>	this.releaser = releaser;
1014	>	}
1015	>	public void close() {
1016	>	try {
1017	>	releaser.run();
1018	>	} finally {
1019	>	super.close();
1020	>	}
1021	>	}
1022	>	}
1023	>
1024	>	PoolCleaner cleaner(ExecutorService pool) {
1025	>	return new PoolCleaner(pool);
1026	>	}
1027	>
1028	>	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
1029	>	return new PoolCleanerWithReleaser(pool, releaser);
1030	>	}
1031	>
1032	>	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
1033	>	return new PoolCleanerWithReleaser(pool, releaser(latch));
1034	>	}
1035	>
1036	>	Runnable releaser(final CountDownLatch latch) {
1037	>	return new Runnable() { public void run() {
1038	>	do { latch.countDown(); }
1039	>	while (latch.getCount() > 0);
1040	>	}};
1041	>	}
1042	>
1043	>	PoolCleaner cleaner(ExecutorService pool, AtomicBoolean flag) {
1044	>	return new PoolCleanerWithReleaser(pool, releaser(flag));
1045	>	}
1046	>
1047	>	Runnable releaser(final AtomicBoolean flag) {
1048	>	return new Runnable() { public void run() { flag.set(true); }};
1049		}
1050
1051		/**
1052	<	* Wait out termination of a thread pool or fail doing so
1052	>	* Waits out termination of a thread pool or fails doing so.
1053		*/
1054	<	public void joinPool(ExecutorService exec) {
1054	>	void joinPool(ExecutorService pool) {
1055		try {
1056	<	exec.shutdown();
1057	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
1056	>	pool.shutdown();
1057	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
1058	>	try {
1059	>	threadFail("ExecutorService " + pool +
1060	>	" did not terminate in a timely manner");
1061	>	} finally {
1062	>	// last resort, for the benefit of subsequent tests
1063	>	pool.shutdownNow();
1064	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
1065	>	}
1066	>	}
1067		} catch (SecurityException ok) {
1068		// Allowed in case test doesn't have privs
1069	<	} catch (InterruptedException ie) {
1070	<	fail("Unexpected InterruptedException");
1069	>	} catch (InterruptedException fail) {
1070	>	threadFail("Unexpected InterruptedException");
1071		}
1072		}
1073
1074	+	/**
1075	+	* Like Runnable, but with the freedom to throw anything.
1076	+	* junit folks had the same idea:
1077	+	* http://junit.org/junit5/docs/snapshot/api/org/junit/gen5/api/Executable.html
1078	+	*/
1079	+	interface Action { public void run() throws Throwable; }
1080
1081		/**
1082	<	* fail with message "should throw exception"
1082	>	* Runs all the given actions in parallel, failing if any fail.
1083	>	* Useful for running multiple variants of tests that are
1084	>	* necessarily individually slow because they must block.
1085		*/
1086	<	public void shouldThrow() {
1087	<	fail("Should throw exception");
1086	>	void testInParallel(Action ... actions) {
1087	>	ExecutorService pool = Executors.newCachedThreadPool();
1088	>	try (PoolCleaner cleaner = cleaner(pool)) {
1089	>	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
1090	>	for (final Action action : actions)
1091	>	futures.add(pool.submit(new CheckedRunnable() {
1092	>	public void realRun() throws Throwable { action.run();}}));
1093	>	for (Future<?> future : futures)
1094	>	try {
1095	>	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
1096	>	} catch (ExecutionException ex) {
1097	>	threadUnexpectedException(ex.getCause());
1098	>	} catch (Exception ex) {
1099	>	threadUnexpectedException(ex);
1100	>	}
1101	>	}
1102	>	}
1103	>
1104	>	/** Returns true if thread info might be useful in a thread dump. */
1105	>	static boolean threadOfInterest(ThreadInfo info) {
1106	>	final String name = info.getThreadName();
1107	>	String lockName;
1108	>	if (name == null)
1109	>	return true;
1110	>	if (name.equals("Signal Dispatcher")
1111	>	|| name.equals("WedgedTestDetector"))
1112	>	return false;
1113	>	if (name.equals("Reference Handler")) {
1114	>	// Reference Handler stacktrace changed in JDK-8156500
1115	>	StackTraceElement[] stackTrace; String methodName;
1116	>	if ((stackTrace = info.getStackTrace()) != null
1117	>	&& stackTrace.length > 0
1118	>	&& (methodName = stackTrace[0].getMethodName()) != null
1119	>	&& methodName.equals("waitForReferencePendingList"))
1120	>	return false;
1121	>	// jdk8 Reference Handler stacktrace
1122	>	if ((lockName = info.getLockName()) != null
1123	>	&& lockName.startsWith("java.lang.ref"))
1124	>	return false;
1125	>	}
1126	>	if ((name.equals("Finalizer") || name.equals("Common-Cleaner"))
1127	>	&& (lockName = info.getLockName()) != null
1128	>	&& lockName.startsWith("java.lang.ref"))
1129	>	return false;
1130	>	if (name.startsWith("ForkJoinPool.commonPool-worker")
1131	>	&& (lockName = info.getLockName()) != null
1132	>	&& lockName.startsWith("java.util.concurrent.ForkJoinPool"))
1133	>	return false;
1134	>	return true;
1135		}
1136
1137		/**
1138	<	* fail with message "should throw " + exceptionName
1138	>	* A debugging tool to print stack traces of most threads, as jstack does.
1139	>	* Uninteresting threads are filtered out.
1140		*/
1141	<	public void shouldThrow(String exceptionName) {
1142	<	fail("Should throw " + exceptionName);
1141	>	static void dumpTestThreads() {
1142	>	SecurityManager sm = System.getSecurityManager();
1143	>	if (sm != null) {
1144	>	try {
1145	>	System.setSecurityManager(null);
1146	>	} catch (SecurityException giveUp) {
1147	>	return;
1148	>	}
1149	>	}
1150	>
1151	>	System.err.println("------ stacktrace dump start ------");
1152	>	for (ThreadInfo info : THREAD_MXBEAN.dumpAllThreads(true, true))
1153	>	if (threadOfInterest(info))
1154	>	System.err.print(info);
1155	>	System.err.println("------ stacktrace dump end ------");
1156	>
1157	>	if (sm != null) System.setSecurityManager(sm);
1158		}
1159
1160		/**
1161	<	* fail with message "Unexpected exception"
1161	>	* Checks that thread eventually enters the expected blocked thread state.
1162		*/
1163	<	public void unexpectedException() {
1164	<	fail("Unexpected exception");
1163	>	void assertThreadBlocks(Thread thread, Thread.State expected) {
1164	>	// always sleep at least 1 ms, with high probability avoiding
1165	>	// transitory states
1166	>	for (long retries = LONG_DELAY_MS * 3 / 4; retries-->0; ) {
1167	>	try { delay(1); }
1168	>	catch (InterruptedException fail) {
1169	>	throw new AssertionError("Unexpected InterruptedException", fail);
1170	>	}
1171	>	Thread.State s = thread.getState();
1172	>	if (s == expected)
1173	>	return;
1174	>	else if (s == Thread.State.TERMINATED)
1175	>	fail("Unexpected thread termination");
1176	>	}
1177	>	fail("timed out waiting for thread to enter thread state " + expected);
1178		}
1179
1180		/**
1181	<	* fail with message "Unexpected exception", with argument
1181	>	* Returns the thread's blocker's class name, if any, else null.
1182		*/
1183	<	public void unexpectedException(Throwable ex) {
1184	<	ex.printStackTrace();
1185	<	fail("Unexpected exception: " + ex);
1183	>	String blockerClassName(Thread thread) {
1184	>	ThreadInfo threadInfo; LockInfo lockInfo;
1185	>	if ((threadInfo = THREAD_MXBEAN.getThreadInfo(thread.getId(), 0)) != null
1186	>	&& (lockInfo = threadInfo.getLockInfo()) != null)
1187	>	return lockInfo.getClassName();
1188	>	return null;
1189		}
1190
1191	+	/**
1192	+	* Checks that future.get times out, with the default timeout of
1193	+	* {@code timeoutMillis()}.
1194	+	*/
1195	+	void assertFutureTimesOut(Future<?> future) {
1196	+	assertFutureTimesOut(future, timeoutMillis());
1197	+	}
1198
1199		/**
1200	<	* The number of elements to place in collections, arrays, etc.
1200	>	* Checks that future.get times out, with the given millisecond timeout.
1201		*/
1202	<	public static final int SIZE = 20;
1202	>	void assertFutureTimesOut(Future<?> future, long timeoutMillis) {
1203	>	long startTime = System.nanoTime();
1204	>	try {
1205	>	future.get(timeoutMillis, MILLISECONDS);
1206	>	shouldThrow();
1207	>	} catch (TimeoutException success) {
1208	>	} catch (Exception fail) {
1209	>	threadUnexpectedException(fail);
1210	>	}
1211	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
1212	>	assertFalse(future.isDone());
1213	>	}
1214
1215	<	// Some convenient Integer constants
1215	>	/**
1216	>	* Fails with message "should throw exception".
1217	>	*/
1218	>	public void shouldThrow() {
1219	>	fail("Should throw exception");
1220	>	}
1221
1222	<	public static final Integer zero  = new Integer(0);
1223	<	public static final Integer one   = new Integer(1);
1224	<	public static final Integer two   = new Integer(2);
1225	<	public static final Integer three = new Integer(3);
1226	<	public static final Integer four  = new Integer(4);
1227	<	public static final Integer five  = new Integer(5);
387	<	public static final Integer six   = new Integer(6);
388	<	public static final Integer seven = new Integer(7);
389	<	public static final Integer eight = new Integer(8);
390	<	public static final Integer nine  = new Integer(9);
391	<	public static final Integer m1  = new Integer(-1);
392	<	public static final Integer m2  = new Integer(-2);
393	<	public static final Integer m3  = new Integer(-3);
394	<	public static final Integer m4  = new Integer(-4);
395	<	public static final Integer m5  = new Integer(-5);
396	<	public static final Integer m6  = new Integer(-6);
397	<	public static final Integer m10 = new Integer(-10);
1222	>	/**
1223	>	* Fails with message "should throw " + exceptionName.
1224	>	*/
1225	>	public void shouldThrow(String exceptionName) {
1226	>	fail("Should throw " + exceptionName);
1227	>	}
1228
1229	+	/**
1230	+	* The maximum number of consecutive spurious wakeups we should
1231	+	* tolerate (from APIs like LockSupport.park) before failing a test.
1232	+	*/
1233	+	static final int MAX_SPURIOUS_WAKEUPS = 10;
1234	+
1235	+	/**
1236	+	* The number of elements to place in collections, arrays, etc.
1237	+	* Must be at least ten;
1238	+	*/
1239	+	public static final int SIZE = 32;
1240	+
1241	+	static Item[] seqItems(int size) {
1242	+	Item[] s = new Item[size];
1243	+	for (int i = 0; i < size; ++i)
1244	+	s[i] = new Item(i);
1245	+	return s;
1246	+	}
1247	+	static Item[] negativeSeqItems(int size) {
1248	+	Item[] s = new Item[size];
1249	+	for (int i = 0; i < size; ++i)
1250	+	s[i] = new Item(-i);
1251	+	return s;
1252	+	}
1253	+
1254	+	// Many tests rely on defaultItems all being sequential nonnegative
1255	+	public static final Item[] defaultItems = seqItems(SIZE);
1256	+
1257	+	static Item itemFor(int i) { // check cache for defaultItems
1258	+	Item[] items = defaultItems;
1259	+	return (i >= 0 && i < items.length) ? items[i] : new Item(i);
1260	+	}
1261	+
1262	+	public static final Item zero  = defaultItems[0];
1263	+	public static final Item one   = defaultItems[1];
1264	+	public static final Item two   = defaultItems[2];
1265	+	public static final Item three = defaultItems[3];
1266	+	public static final Item four  = defaultItems[4];
1267	+	public static final Item five  = defaultItems[5];
1268	+	public static final Item six   = defaultItems[6];
1269	+	public static final Item seven = defaultItems[7];
1270	+	public static final Item eight = defaultItems[8];
1271	+	public static final Item nine  = defaultItems[9];
1272	+	public static final Item ten   = defaultItems[10];
1273	+
1274	+	public static final Item[] negativeItems = negativeSeqItems(SIZE);
1275	+
1276	+	public static final Item minusOne   = negativeItems[1];
1277	+	public static final Item minusTwo   = negativeItems[2];
1278	+	public static final Item minusThree = negativeItems[3];
1279	+	public static final Item minusFour  = negativeItems[4];
1280	+	public static final Item minusFive  = negativeItems[5];
1281	+	public static final Item minusSix   = negativeItems[6];
1282	+	public static final Item minusSeven = negativeItems[7];
1283	+	public static final Item minusEight = negativeItems[8];
1284	+	public static final Item minusNone  = negativeItems[9];
1285	+	public static final Item minusTen   = negativeItems[10];
1286	+
1287	+	// elements expected to be missing
1288	+	public static final Item fortytwo = new Item(42);
1289	+	public static final Item eightysix = new Item(86);
1290	+	public static final Item ninetynine = new Item(99);
1291	+
1292	+	// Interop across Item, int
1293	+
1294	+	static void mustEqual(Item x, Item y) {
1295	+	if (x != y)
1296	+	assertEquals(x.value, y.value);
1297	+	}
1298	+	static void mustEqual(Item x, int y) {
1299	+	assertEquals(x.value, y);
1300	+	}
1301	+	static void mustEqual(int x, Item y) {
1302	+	assertEquals(x, y.value);
1303	+	}
1304	+	static void mustEqual(int x, int y) {
1305	+	assertEquals(x, y);
1306	+	}
1307	+	static void mustEqual(Object x, Object y) {
1308	+	if (x != y)
1309	+	assertEquals(x, y);
1310	+	}
1311	+	static void mustEqual(int x, Object y) {
1312	+	if (y instanceof Item)
1313	+	assertEquals(x, ((Item)y).value);
1314	+	else fail();
1315	+	}
1316	+	static void mustEqual(Object x, int y) {
1317	+	if (x instanceof Item)
1318	+	assertEquals(((Item)x).value, y);
1319	+	else fail();
1320	+	}
1321	+	static void mustEqual(boolean x, boolean y) {
1322	+	assertEquals(x, y);
1323	+	}
1324	+	static void mustEqual(long x, long y) {
1325	+	assertEquals(x, y);
1326	+	}
1327	+	static void mustEqual(double x, double y) {
1328	+	assertEquals(x, y);
1329	+	}
1330	+	static void mustContain(Collection<Item> c, int i) {
1331	+	assertTrue(c.contains(itemFor(i)));
1332	+	}
1333	+	static void mustContain(Collection<Item> c, Item i) {
1334	+	assertTrue(c.contains(i));
1335	+	}
1336	+	static void mustNotContain(Collection<Item> c, int i) {
1337	+	assertFalse(c.contains(itemFor(i)));
1338	+	}
1339	+	static void mustNotContain(Collection<Item> c, Item i) {
1340	+	assertFalse(c.contains(i));
1341	+	}
1342	+	static void mustRemove(Collection<Item> c, int i) {
1343	+	assertTrue(c.remove(itemFor(i)));
1344	+	}
1345	+	static void mustRemove(Collection<Item> c, Item i) {
1346	+	assertTrue(c.remove(i));
1347	+	}
1348	+	static void mustNotRemove(Collection<Item> c, int i) {
1349	+	Item[] items = defaultItems;
1350	+	Item x = (i >= 0 && i < items.length) ? items[i] : new Item(i);
1351	+	assertFalse(c.remove(x));
1352	+	}
1353	+	static void mustNotRemove(Collection<Item> c, Item i) {
1354	+	assertFalse(c.remove(i));
1355	+	}
1356	+	static void mustAdd(Collection<Item> c, int i) {
1357	+	assertTrue(c.add(itemFor(i)));
1358	+	}
1359	+	static void mustAdd(Collection<Item> c, Item i) {
1360	+	assertTrue(c.add(i));
1361	+	}
1362	+	static void mustOffer(Queue<Item> c, int i) {
1363	+	assertTrue(c.offer(itemFor(i)));
1364	+	}
1365	+	static void mustOffer(Queue<Item> c, Item i) {
1366	+	assertTrue(c.offer(i));
1367	+	}
1368
1369		/**
1370		* Runs Runnable r with a security policy that permits precisely
#	Line 408 | Line 1377 | public class JSR166TestCase extends Test
1377		SecurityManager sm = System.getSecurityManager();
1378		if (sm == null) {
1379		r.run();
1380	+	}
1381	+	runWithSecurityManagerWithPermissions(r, permissions);
1382	+	}
1383	+
1384	+	/**
1385	+	* Runs Runnable r with a security policy that permits precisely
1386	+	* the specified permissions.  If there is no current security
1387	+	* manager, a temporary one is set for the duration of the
1388	+	* Runnable.  We require that any security manager permit
1389	+	* getPolicy/setPolicy.
1390	+	*/
1391	+	public void runWithSecurityManagerWithPermissions(Runnable r,
1392	+	Permission... permissions) {
1393	+	SecurityManager sm = System.getSecurityManager();
1394	+	if (sm == null) {
1395		Policy savedPolicy = Policy.getPolicy();
1396		try {
1397		Policy.setPolicy(permissivePolicy());
1398		System.setSecurityManager(new SecurityManager());
1399	<	runWithPermissions(r, permissions);
1399	>	runWithSecurityManagerWithPermissions(r, permissions);
1400		} finally {
1401		System.setSecurityManager(null);
1402		Policy.setPolicy(savedPolicy);
#	Line 460 | Line 1444 | public class JSR166TestCase extends Test
1444		return perms.implies(p);
1445		}
1446		public void refresh() {}
1447	+	public String toString() {
1448	+	List<Permission> ps = new ArrayList<>();
1449	+	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1450	+	ps.add(e.nextElement());
1451	+	return "AdjustablePolicy with permissions " + ps;
1452	+	}
1453		}
1454
1455		/**
#	Line 482 | Line 1472 | public class JSR166TestCase extends Test
1472		}
1473
1474		/**
1475	<	* Sleep until the timeout has elapsed, or interrupted.
1476	<	* Does <em>NOT</em> throw InterruptedException.
1475	>	* Sleeps until the given time has elapsed.
1476	>	* Throws AssertionError if interrupted.
1477	>	*/
1478	>	static void sleep(long millis) {
1479	>	try {
1480	>	delay(millis);
1481	>	} catch (InterruptedException fail) {
1482	>	throw new AssertionError("Unexpected InterruptedException", fail);
1483	>	}
1484	>	}
1485	>
1486	>	/**
1487	>	* Spin-waits up to the specified number of milliseconds for the given
1488	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1489	>	* @param waitingForGodot if non-null, an additional condition to satisfy
1490	>	*/
1491	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis,
1492	>	Callable<Boolean> waitingForGodot) {
1493	>	for (long startTime = 0L;;) {
1494	>	switch (thread.getState()) {
1495	>	default: break;
1496	>	case BLOCKED: case WAITING: case TIMED_WAITING:
1497	>	try {
1498	>	if (waitingForGodot == null || waitingForGodot.call())
1499	>	return;
1500	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1501	>	break;
1502	>	case TERMINATED:
1503	>	fail("Unexpected thread termination");
1504	>	}
1505	>
1506	>	if (startTime == 0L)
1507	>	startTime = System.nanoTime();
1508	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1509	>	assertTrue(thread.isAlive());
1510	>	if (waitingForGodot == null
1511	>	|| thread.getState() == Thread.State.RUNNABLE)
1512	>	fail("timed out waiting for thread to enter wait state");
1513	>	else
1514	>	fail("timed out waiting for condition, thread state="
1515	>	+ thread.getState());
1516	>	}
1517	>	Thread.yield();
1518	>	}
1519	>	}
1520	>
1521	>	/**
1522	>	* Spin-waits up to the specified number of milliseconds for the given
1523	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1524	>	*/
1525	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1526	>	waitForThreadToEnterWaitState(thread, timeoutMillis, null);
1527	>	}
1528	>
1529	>	/**
1530	>	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1531	>	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1532	>	*/
1533	>	void waitForThreadToEnterWaitState(Thread thread) {
1534	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS, null);
1535	>	}
1536	>
1537	>	/**
1538	>	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1539	>	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING,
1540	>	* and additionally satisfy the given condition.
1541	>	*/
1542	>	void waitForThreadToEnterWaitState(Thread thread,
1543	>	Callable<Boolean> waitingForGodot) {
1544	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS, waitingForGodot);
1545	>	}
1546	>
1547	>	/**
1548	>	* Spin-waits up to LONG_DELAY_MS milliseconds for the current thread to
1549	>	* be interrupted.  Clears the interrupt status before returning.
1550	>	*/
1551	>	void awaitInterrupted() {
1552	>	for (long startTime = 0L; !Thread.interrupted(); ) {
1553	>	if (startTime == 0L)
1554	>	startTime = System.nanoTime();
1555	>	else if (millisElapsedSince(startTime) > LONG_DELAY_MS)
1556	>	fail("timed out waiting for thread interrupt");
1557	>	Thread.yield();
1558	>	}
1559	>	}
1560	>
1561	>	/**
1562	>	* Returns the number of milliseconds since time given by
1563	>	* startNanoTime, which must have been previously returned from a
1564	>	* call to {@link System#nanoTime()}.
1565		*/
1566	<	void sleepTillInterrupted(long timeoutMillis) {
1566	>	static long millisElapsedSince(long startNanoTime) {
1567	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1568	>	}
1569	>
1570	>	/**
1571	>	* Checks that timed f.get() returns the expected value, and does not
1572	>	* wait for the timeout to elapse before returning.
1573	>	*/
1574	>	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1575	>	long startTime = System.nanoTime();
1576	>	T actual = null;
1577		try {
1578	<	Thread.sleep(timeoutMillis);
1579	<	} catch (InterruptedException wakeup) {}
1578	>	actual = f.get(timeoutMillis, MILLISECONDS);
1579	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1580	>	assertEquals(expectedValue, actual);
1581	>	if (millisElapsedSince(startTime) > timeoutMillis/2)
1582	>	throw new AssertionError("timed get did not return promptly");
1583	>	}
1584	>
1585	>	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1586	>	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1587		}
1588
1589		/**
1590	<	* Returns a new started Thread running the given runnable.
1590	>	* Returns a new started daemon Thread running the given runnable.
1591		*/
1592		Thread newStartedThread(Runnable runnable) {
1593		Thread t = new Thread(runnable);
1594	+	t.setDaemon(true);
1595		t.start();
1596		return t;
1597		}
1598
1599	<	// Some convenient Runnable classes
1600	<
1601	<	public abstract class CheckedRunnable implements Runnable {
1602	<	protected abstract void realRun() throws Throwable;
1599	>	/**
1600	>	* Returns a new started daemon Thread running the given action,
1601	>	* wrapped in a CheckedRunnable.
1602	>	*/
1603	>	Thread newStartedThread(Action action) {
1604	>	return newStartedThread(checkedRunnable(action));
1605	>	}
1606
1607	<	public final void run() {
1607	>	/**
1608	>	* Waits for the specified time (in milliseconds) for the thread
1609	>	* to terminate (using {@link Thread#join(long)}), else interrupts
1610	>	* the thread (in the hope that it may terminate later) and fails.
1611	>	*/
1612	>	void awaitTermination(Thread thread, long timeoutMillis) {
1613	>	try {
1614	>	thread.join(timeoutMillis);
1615	>	} catch (InterruptedException fail) {
1616	>	threadUnexpectedException(fail);
1617	>	}
1618	>	if (thread.getState() != Thread.State.TERMINATED) {
1619	>	String detail = String.format(
1620	>	"timed out waiting for thread to terminate, thread=%s, state=%s" ,
1621	>	thread, thread.getState());
1622		try {
1623	<	realRun();
1624	<	} catch (Throwable t) {
1625	<	threadUnexpectedException(t);
1623	>	threadFail(detail);
1624	>	} finally {
1625	>	// Interrupt thread __after__ having reported its stack trace
1626	>	thread.interrupt();
1627		}
1628		}
1629		}
1630
1631	<	public abstract class RunnableShouldThrow implements Runnable {
1632	<	protected abstract void realRun() throws Throwable;
1631	>	/**
1632	>	* Waits for LONG_DELAY_MS milliseconds for the thread to
1633	>	* terminate (using {@link Thread#join(long)}), else interrupts
1634	>	* the thread (in the hope that it may terminate later) and fails.
1635	>	*/
1636	>	void awaitTermination(Thread t) {
1637	>	awaitTermination(t, LONG_DELAY_MS);
1638	>	}
1639
1640	<	final Class<?> exceptionClass;
1640	>	// Some convenient Runnable classes
1641
1642	<	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
1643	<	this.exceptionClass = exceptionClass;
524	<	}
1642	>	public abstract class CheckedRunnable implements Runnable {
1643	>	protected abstract void realRun() throws Throwable;
1644
1645		public final void run() {
1646		try {
1647		realRun();
1648	<	threadShouldThrow(exceptionClass.getSimpleName());
1649	<	} catch (Throwable t) {
531	<	if (! exceptionClass.isInstance(t))
532	<	threadUnexpectedException(t);
1648	>	} catch (Throwable fail) {
1649	>	threadUnexpectedException(fail);
1650		}
1651		}
1652		}
1653
1654	+	Runnable checkedRunnable(Action action) {
1655	+	return new CheckedRunnable() {
1656	+	public void realRun() throws Throwable {
1657	+	action.run();
1658	+	}};
1659	+	}
1660	+
1661		public abstract class ThreadShouldThrow extends Thread {
1662		protected abstract void realRun() throws Throwable;
1663
#	Line 546 | Line 1670 | public class JSR166TestCase extends Test
1670		public final void run() {
1671		try {
1672		realRun();
549	–	threadShouldThrow(exceptionClass.getSimpleName());
1673		} catch (Throwable t) {
1674		if (! exceptionClass.isInstance(t))
1675		threadUnexpectedException(t);
1676	+	return;
1677		}
1678	+	threadShouldThrow(exceptionClass.getSimpleName());
1679		}
1680		}
1681
#	Line 560 | Line 1685 | public class JSR166TestCase extends Test
1685		public final void run() {
1686		try {
1687		realRun();
563	–	threadShouldThrow("InterruptedException");
1688		} catch (InterruptedException success) {
1689	<	} catch (Throwable t) {
1690	<	threadUnexpectedException(t);
1689	>	threadAssertFalse(Thread.interrupted());
1690	>	return;
1691	>	} catch (Throwable fail) {
1692	>	threadUnexpectedException(fail);
1693		}
1694	+	threadShouldThrow("InterruptedException");
1695		}
1696		}
1697
#	Line 574 | Line 1701 | public class JSR166TestCase extends Test
1701		public final T call() {
1702		try {
1703		return realCall();
1704	<	} catch (Throwable t) {
1705	<	threadUnexpectedException(t);
1704	>	} catch (Throwable fail) {
1705	>	threadUnexpectedException(fail);
1706		}
1707	<	return null;
581	<	}
582	<	}
583	<
584	<	public abstract class CheckedInterruptedCallable<T> implements Callable<T> {
585	<	protected abstract T realCall() throws Throwable;
586	<
587	<	public final T call() {
588	<	try {
589	<	T result = realCall();
590	<	threadShouldThrow("InterruptedException");
591	<	return result;
592	<	} catch (InterruptedException success) {
593	<	} catch (Throwable t) {
594	<	threadUnexpectedException(t);
595	<	}
596	<	return null;
1707	>	throw new AssertionError("unreached");
1708		}
1709		}
1710
#	Line 601 | Line 1712 | public class JSR166TestCase extends Test
1712		public void run() {}
1713		}
1714
1715	<	public static class NoOpCallable implements Callable {
1715	>	public static class NoOpCallable implements Callable<Object> {
1716		public Object call() { return Boolean.TRUE; }
1717		}
1718
1719		public static final String TEST_STRING = "a test string";
1720
1721		public static class StringTask implements Callable<String> {
1722	<	public String call() { return TEST_STRING; }
1722	>	final String value;
1723	>	public StringTask() { this(TEST_STRING); }
1724	>	public StringTask(String value) { this.value = value; }
1725	>	public String call() { return value; }
1726		}
1727
1728		public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1729		return new CheckedCallable<String>() {
1730	<	public String realCall() {
1730	>	protected String realCall() {
1731		try {
1732		latch.await();
1733		} catch (InterruptedException quittingTime) {}
#	Line 621 | Line 1735 | public class JSR166TestCase extends Test
1735		}};
1736		}
1737
1738	<	public static class NPETask implements Callable<String> {
1739	<	public String call() { throw new NullPointerException(); }
1738	>	public Runnable countDowner(final CountDownLatch latch) {
1739	>	return new CheckedRunnable() {
1740	>	public void realRun() throws InterruptedException {
1741	>	latch.countDown();
1742	>	}};
1743		}
1744
1745	<	public static class CallableOne implements Callable<Integer> {
1746	<	public Integer call() { return one; }
1745	>	class LatchAwaiter extends CheckedRunnable {
1746	>	static final int NEW = 0;
1747	>	static final int RUNNING = 1;
1748	>	static final int DONE = 2;
1749	>	final CountDownLatch latch;
1750	>	int state = NEW;
1751	>	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1752	>	public void realRun() throws InterruptedException {
1753	>	state = 1;
1754	>	await(latch);
1755	>	state = 2;
1756	>	}
1757		}
1758
1759	<	public class ShortRunnable extends CheckedRunnable {
1760	<	protected void realRun() throws Throwable {
634	<	Thread.sleep(SHORT_DELAY_MS);
635	<	}
1759	>	public LatchAwaiter awaiter(CountDownLatch latch) {
1760	>	return new LatchAwaiter(latch);
1761		}
1762
1763	<	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1764	<	protected void realRun() throws InterruptedException {
1765	<	Thread.sleep(SHORT_DELAY_MS);
1763	>	public void await(CountDownLatch latch, long timeoutMillis) {
1764	>	boolean timedOut = false;
1765	>	try {
1766	>	timedOut = !latch.await(timeoutMillis, MILLISECONDS);
1767	>	} catch (Throwable fail) {
1768	>	threadUnexpectedException(fail);
1769		}
1770	+	if (timedOut)
1771	+	fail("timed out waiting for CountDownLatch for "
1772	+	+ (timeoutMillis/1000) + " sec");
1773		}
1774
1775	<	public class SmallRunnable extends CheckedRunnable {
1776	<	protected void realRun() throws Throwable {
646	<	Thread.sleep(SMALL_DELAY_MS);
647	<	}
1775	>	public void await(CountDownLatch latch) {
1776	>	await(latch, LONG_DELAY_MS);
1777		}
1778
1779	<	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1780	<	protected void realRun() {
1781	<	try {
1782	<	Thread.sleep(SMALL_DELAY_MS);
1783	<	} catch (InterruptedException ok) {}
1779	>	public void await(Semaphore semaphore) {
1780	>	boolean timedOut = false;
1781	>	try {
1782	>	timedOut = !semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS);
1783	>	} catch (Throwable fail) {
1784	>	threadUnexpectedException(fail);
1785		}
1786	+	if (timedOut)
1787	+	fail("timed out waiting for Semaphore for "
1788	+	+ (LONG_DELAY_MS/1000) + " sec");
1789		}
1790
1791	<	public class SmallCallable extends CheckedCallable {
1792	<	protected Object realCall() throws InterruptedException {
1793	<	Thread.sleep(SMALL_DELAY_MS);
1794	<	return Boolean.TRUE;
1791	>	public void await(CyclicBarrier barrier) {
1792	>	try {
1793	>	barrier.await(LONG_DELAY_MS, MILLISECONDS);
1794	>	} catch (Throwable fail) {
1795	>	threadUnexpectedException(fail);
1796		}
1797		}
1798
1799	<	public class SmallInterruptedRunnable extends CheckedInterruptedRunnable {
1800	<	protected void realRun() throws InterruptedException {
1801	<	Thread.sleep(SMALL_DELAY_MS);
1802	<	}
1799	>	//     /**
1800	>	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1801	>	//      */
1802	>	//     public void await(AtomicBoolean flag) {
1803	>	//         await(flag, LONG_DELAY_MS);
1804	>	//     }
1805	>
1806	>	//     /**
1807	>	//      * Spin-waits up to the specified timeout until flag becomes true.
1808	>	//      */
1809	>	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1810	>	//         long startTime = System.nanoTime();
1811	>	//         while (!flag.get()) {
1812	>	//             if (millisElapsedSince(startTime) > timeoutMillis)
1813	>	//                 throw new AssertionError("timed out");
1814	>	//             Thread.yield();
1815	>	//         }
1816	>	//     }
1817	>
1818	>	public static class NPETask implements Callable<String> {
1819	>	public String call() { throw new NullPointerException(); }
1820		}
1821
1822	<	public class MediumRunnable extends CheckedRunnable {
1823	<	protected void realRun() throws Throwable {
1824	<	Thread.sleep(MEDIUM_DELAY_MS);
1822	>	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1823	>	return new CheckedRunnable() {
1824	>	protected void realRun() {
1825	>	try {
1826	>	delay(timeoutMillis);
1827	>	} catch (InterruptedException ok) {}
1828	>	}};
1829	>	}
1830	>
1831	>	/**
1832	>	* For use as ThreadFactory in constructors
1833	>	*/
1834	>	public static class SimpleThreadFactory implements ThreadFactory {
1835	>	public Thread newThread(Runnable r) {
1836	>	return new Thread(r);
1837		}
1838		}
1839
1840	<	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1841	<	protected void realRun() throws InterruptedException {
1842	<	Thread.sleep(MEDIUM_DELAY_MS);
1840	>	public interface TrackedRunnable extends Runnable {
1841	>	boolean isDone();
1842	>	}
1843	>
1844	>	public static class TrackedNoOpRunnable implements Runnable {
1845	>	public volatile boolean done = false;
1846	>	public void run() {
1847	>	done = true;
1848		}
1849		}
1850
1851	<	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1852	<	protected void realRun() {
1851	>	/**
1852	>	* Analog of CheckedRunnable for RecursiveAction
1853	>	*/
1854	>	public abstract class CheckedRecursiveAction extends RecursiveAction {
1855	>	protected abstract void realCompute() throws Throwable;
1856	>
1857	>	@Override protected final void compute() {
1858		try {
1859	<	Thread.sleep(MEDIUM_DELAY_MS);
1860	<	} catch (InterruptedException ok) {}
1859	>	realCompute();
1860	>	} catch (Throwable fail) {
1861	>	threadUnexpectedException(fail);
1862	>	}
1863		}
1864		}
1865
1866	<	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1867	<	protected void realRun() {
1866	>	/**
1867	>	* Analog of CheckedCallable for RecursiveTask
1868	>	*/
1869	>	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1870	>	protected abstract T realCompute() throws Throwable;
1871	>
1872	>	@Override protected final T compute() {
1873		try {
1874	<	Thread.sleep(LONG_DELAY_MS);
1875	<	} catch (InterruptedException ok) {}
1874	>	return realCompute();
1875	>	} catch (Throwable fail) {
1876	>	threadUnexpectedException(fail);
1877	>	}
1878	>	throw new AssertionError("unreached");
1879		}
1880		}
1881
1882		/**
1883	<	* For use as ThreadFactory in constructors
1883	>	* For use as RejectedExecutionHandler in constructors
1884		*/
1885	<	public static class SimpleThreadFactory implements ThreadFactory {
1886	<	public Thread newThread(Runnable r) {
1887	<	return new Thread(r);
705	<	}
1885	>	public static class NoOpREHandler implements RejectedExecutionHandler {
1886	>	public void rejectedExecution(Runnable r,
1887	>	ThreadPoolExecutor executor) {}
1888		}
1889
1890	<	public static class TrackedShortRunnable implements Runnable {
1891	<	public volatile boolean done = false;
1892	<	public void run() {
1890	>	/**
1891	>	* A CyclicBarrier that uses timed await and fails with
1892	>	* AssertionErrors instead of throwing checked exceptions.
1893	>	*/
1894	>	public static class CheckedBarrier extends CyclicBarrier {
1895	>	public CheckedBarrier(int parties) { super(parties); }
1896	>
1897	>	public int await() {
1898		try {
1899	<	Thread.sleep(SMALL_DELAY_MS);
1900	<	done = true;
1901	<	} catch (InterruptedException ok) {}
1899	>	return super.await(LONGER_DELAY_MS, MILLISECONDS);
1900	>	} catch (TimeoutException timedOut) {
1901	>	throw new AssertionError("timed out");
1902	>	} catch (Exception fail) {
1903	>	throw new AssertionError("Unexpected exception: " + fail, fail);
1904	>	}
1905		}
1906		}
1907
1908	<	public static class TrackedMediumRunnable implements Runnable {
1909	<	public volatile boolean done = false;
1910	<	public void run() {
1908	>	void checkEmpty(BlockingQueue<?> q) {
1909	>	try {
1910	>	assertTrue(q.isEmpty());
1911	>	assertEquals(0, q.size());
1912	>	assertNull(q.peek());
1913	>	assertNull(q.poll());
1914	>	assertNull(q.poll(randomExpiredTimeout(), randomTimeUnit()));
1915	>	assertEquals(q.toString(), "[]");
1916	>	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1917	>	assertFalse(q.iterator().hasNext());
1918		try {
1919	<	Thread.sleep(MEDIUM_DELAY_MS);
1920	<	done = true;
1921	<	} catch (InterruptedException ok) {}
1922	<	}
1919	>	q.element();
1920	>	shouldThrow();
1921	>	} catch (NoSuchElementException success) {}
1922	>	try {
1923	>	q.iterator().next();
1924	>	shouldThrow();
1925	>	} catch (NoSuchElementException success) {}
1926	>	try {
1927	>	q.remove();
1928	>	shouldThrow();
1929	>	} catch (NoSuchElementException success) {}
1930	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1931		}
1932
1933	<	public static class TrackedLongRunnable implements Runnable {
1934	<	public volatile boolean done = false;
1935	<	public void run() {
1936	<	try {
1937	<	Thread.sleep(LONG_DELAY_MS);
1938	<	done = true;
1939	<	} catch (InterruptedException ok) {}
1933	>	void assertSerialEquals(Object x, Object y) {
1934	>	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1935	>	}
1936	>
1937	>	void assertNotSerialEquals(Object x, Object y) {
1938	>	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1939	>	}
1940	>
1941	>	byte[] serialBytes(Object o) {
1942	>	try {
1943	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1944	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1945	>	oos.writeObject(o);
1946	>	oos.flush();
1947	>	oos.close();
1948	>	return bos.toByteArray();
1949	>	} catch (Throwable fail) {
1950	>	threadUnexpectedException(fail);
1951	>	return new byte[0];
1952		}
1953		}
1954
1955	<	public static class TrackedNoOpRunnable implements Runnable {
1956	<	public volatile boolean done = false;
1957	<	public void run() {
1958	<	done = true;
1955	>	@SuppressWarnings("unchecked")
1956	>	void assertImmutable(Object o) {
1957	>	if (o instanceof Collection) {
1958	>	assertThrows(
1959	>	UnsupportedOperationException.class,
1960	>	() -> ((Collection) o).add(null));
1961		}
1962		}
1963
1964	<	public static class TrackedCallable implements Callable {
1965	<	public volatile boolean done = false;
1966	<	public Object call() {
1967	<	try {
1968	<	Thread.sleep(SMALL_DELAY_MS);
1969	<	done = true;
1970	<	} catch (InterruptedException ok) {}
1971	<	return Boolean.TRUE;
1964	>	@SuppressWarnings("unchecked")
1965	>	<T> T serialClone(T o) {
1966	>	T clone = null;
1967	>	try {
1968	>	ObjectInputStream ois = new ObjectInputStream
1969	>	(new ByteArrayInputStream(serialBytes(o)));
1970	>	clone = (T) ois.readObject();
1971	>	} catch (Throwable fail) {
1972	>	threadUnexpectedException(fail);
1973	>	}
1974	>	if (o == clone) assertImmutable(o);
1975	>	else assertSame(o.getClass(), clone.getClass());
1976	>	return clone;
1977	>	}
1978	>
1979	>	/**
1980	>	* A version of serialClone that leaves error handling (for
1981	>	* e.g. NotSerializableException) up to the caller.
1982	>	*/
1983	>	@SuppressWarnings("unchecked")
1984	>	<T> T serialClonePossiblyFailing(T o)
1985	>	throws ReflectiveOperationException, java.io.IOException {
1986	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1987	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1988	>	oos.writeObject(o);
1989	>	oos.flush();
1990	>	oos.close();
1991	>	ObjectInputStream ois = new ObjectInputStream
1992	>	(new ByteArrayInputStream(bos.toByteArray()));
1993	>	T clone = (T) ois.readObject();
1994	>	if (o == clone) assertImmutable(o);
1995	>	else assertSame(o.getClass(), clone.getClass());
1996	>	return clone;
1997	>	}
1998	>
1999	>	/**
2000	>	* If o implements Cloneable and has a public clone method,
2001	>	* returns a clone of o, else null.
2002	>	*/
2003	>	@SuppressWarnings("unchecked")
2004	>	<T> T cloneableClone(T o) {
2005	>	if (!(o instanceof Cloneable)) return null;
2006	>	final T clone;
2007	>	try {
2008	>	clone = (T) o.getClass().getMethod("clone").invoke(o);
2009	>	} catch (NoSuchMethodException ok) {
2010	>	return null;
2011	>	} catch (ReflectiveOperationException unexpected) {
2012	>	throw new Error(unexpected);
2013		}
2014	+	assertNotSame(o, clone); // not 100% guaranteed by spec
2015	+	assertSame(o.getClass(), clone.getClass());
2016	+	return clone;
2017	+	}
2018	+
2019	+	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
2020	+	Action... throwingActions) {
2021	+	for (Action throwingAction : throwingActions) {
2022	+	boolean threw = false;
2023	+	try { throwingAction.run(); }
2024	+	catch (Throwable t) {
2025	+	threw = true;
2026	+	if (!expectedExceptionClass.isInstance(t))
2027	+	throw new AssertionError(
2028	+	"Expected " + expectedExceptionClass.getName() +
2029	+	", got " + t.getClass().getName(),
2030	+	t);
2031	+	}
2032	+	if (!threw)
2033	+	shouldThrow(expectedExceptionClass.getName());
2034	+	}
2035	+	}
2036	+
2037	+	public void assertIteratorExhausted(Iterator<?> it) {
2038	+	try {
2039	+	it.next();
2040	+	shouldThrow();
2041	+	} catch (NoSuchElementException success) {}
2042	+	assertFalse(it.hasNext());
2043	+	}
2044	+
2045	+	public <T> Callable<T> callableThrowing(final Exception ex) {
2046	+	return new Callable<T>() { public T call() throws Exception { throw ex; }};
2047		}
2048
2049	+	public Runnable runnableThrowing(final RuntimeException ex) {
2050	+	return new Runnable() { public void run() { throw ex; }};
2051	+	}
2052	+
2053	+	/** A reusable thread pool to be shared by tests. */
2054	+	static final ExecutorService cachedThreadPool =
2055	+	new ThreadPoolExecutor(0, Integer.MAX_VALUE,
2056	+	1000L, MILLISECONDS,
2057	+	new SynchronousQueue<Runnable>());
2058	+
2059	+	static <T> void shuffle(T[] array) {
2060	+	Collections.shuffle(Arrays.asList(array), ThreadLocalRandom.current());
2061	+	}
2062
2063		/**
2064	<	* For use as RejectedExecutionHandler in constructors
2064	>	* Returns the same String as would be returned by {@link
2065	>	* Object#toString}, whether or not the given object's class
2066	>	* overrides toString().
2067	>	*
2068	>	* @see System#identityHashCode
2069		*/
2070	<	public static class NoOpREHandler implements RejectedExecutionHandler {
2071	<	public void rejectedExecution(Runnable r,
2072	<	ThreadPoolExecutor executor) {}
2070	>	static String identityString(Object x) {
2071	>	return x.getClass().getName()
2072	>	+ "@" + Integer.toHexString(System.identityHashCode(x));
2073		}
2074
2075	+	// --- Shared assertions for Executor tests ---
2076	+
2077	+	/**
2078	+	* Returns maximum number of tasks that can be submitted to given
2079	+	* pool (with bounded queue) before saturation (when submission
2080	+	* throws RejectedExecutionException).
2081	+	*/
2082	+	static final int saturatedSize(ThreadPoolExecutor pool) {
2083	+	BlockingQueue<Runnable> q = pool.getQueue();
2084	+	return pool.getMaximumPoolSize() + q.size() + q.remainingCapacity();
2085	+	}
2086	+
2087	+	@SuppressWarnings("FutureReturnValueIgnored")
2088	+	void assertNullTaskSubmissionThrowsNullPointerException(Executor e) {
2089	+	try {
2090	+	e.execute((Runnable) null);
2091	+	shouldThrow();
2092	+	} catch (NullPointerException success) {}
2093	+
2094	+	if (! (e instanceof ExecutorService)) return;
2095	+	ExecutorService es = (ExecutorService) e;
2096	+	try {
2097	+	es.submit((Runnable) null);
2098	+	shouldThrow();
2099	+	} catch (NullPointerException success) {}
2100	+	try {
2101	+	es.submit((Runnable) null, Boolean.TRUE);
2102	+	shouldThrow();
2103	+	} catch (NullPointerException success) {}
2104	+	try {
2105	+	es.submit((Callable<?>) null);
2106	+	shouldThrow();
2107	+	} catch (NullPointerException success) {}
2108	+
2109	+	if (! (e instanceof ScheduledExecutorService)) return;
2110	+	ScheduledExecutorService ses = (ScheduledExecutorService) e;
2111	+	try {
2112	+	ses.schedule((Runnable) null,
2113	+	randomTimeout(), randomTimeUnit());
2114	+	shouldThrow();
2115	+	} catch (NullPointerException success) {}
2116	+	try {
2117	+	ses.schedule((Callable<?>) null,
2118	+	randomTimeout(), randomTimeUnit());
2119	+	shouldThrow();
2120	+	} catch (NullPointerException success) {}
2121	+	try {
2122	+	ses.scheduleAtFixedRate((Runnable) null,
2123	+	randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2124	+	shouldThrow();
2125	+	} catch (NullPointerException success) {}
2126	+	try {
2127	+	ses.scheduleWithFixedDelay((Runnable) null,
2128	+	randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2129	+	shouldThrow();
2130	+	} catch (NullPointerException success) {}
2131	+	}
2132	+
2133	+	void setRejectedExecutionHandler(
2134	+	ThreadPoolExecutor p, RejectedExecutionHandler handler) {
2135	+	p.setRejectedExecutionHandler(handler);
2136	+	assertSame(handler, p.getRejectedExecutionHandler());
2137	+	}
2138	+
2139	+	void assertTaskSubmissionsAreRejected(ThreadPoolExecutor p) {
2140	+	final RejectedExecutionHandler savedHandler = p.getRejectedExecutionHandler();
2141	+	final long savedTaskCount = p.getTaskCount();
2142	+	final long savedCompletedTaskCount = p.getCompletedTaskCount();
2143	+	final int savedQueueSize = p.getQueue().size();
2144	+	final boolean stock = (p.getClass().getClassLoader() == null);
2145	+
2146	+	Runnable r = () -> {};
2147	+	Callable<Boolean> c = () -> Boolean.TRUE;
2148	+
2149	+	class Recorder implements RejectedExecutionHandler {
2150	+	public volatile Runnable r = null;
2151	+	public volatile ThreadPoolExecutor p = null;
2152	+	public void reset() { r = null; p = null; }
2153	+	public void rejectedExecution(Runnable r, ThreadPoolExecutor p) {
2154	+	assertNull(this.r);
2155	+	assertNull(this.p);
2156	+	this.r = r;
2157	+	this.p = p;
2158	+	}
2159	+	}
2160	+
2161	+	// check custom handler is invoked exactly once per task
2162	+	Recorder recorder = new Recorder();
2163	+	setRejectedExecutionHandler(p, recorder);
2164	+	for (int i = 2; i--> 0; ) {
2165	+	recorder.reset();
2166	+	p.execute(r);
2167	+	if (stock && p.getClass() == ThreadPoolExecutor.class)
2168	+	assertSame(r, recorder.r);
2169	+	assertSame(p, recorder.p);
2170	+
2171	+	recorder.reset();
2172	+	assertFalse(p.submit(r).isDone());
2173	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2174	+	assertSame(p, recorder.p);
2175	+
2176	+	recorder.reset();
2177	+	assertFalse(p.submit(r, Boolean.TRUE).isDone());
2178	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2179	+	assertSame(p, recorder.p);
2180	+
2181	+	recorder.reset();
2182	+	assertFalse(p.submit(c).isDone());
2183	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2184	+	assertSame(p, recorder.p);
2185	+
2186	+	if (p instanceof ScheduledExecutorService) {
2187	+	ScheduledExecutorService s = (ScheduledExecutorService) p;
2188	+	ScheduledFuture<?> future;
2189	+
2190	+	recorder.reset();
2191	+	future = s.schedule(r, randomTimeout(), randomTimeUnit());
2192	+	assertFalse(future.isDone());
2193	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2194	+	assertSame(p, recorder.p);
2195	+
2196	+	recorder.reset();
2197	+	future = s.schedule(c, randomTimeout(), randomTimeUnit());
2198	+	assertFalse(future.isDone());
2199	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2200	+	assertSame(p, recorder.p);
2201	+
2202	+	recorder.reset();
2203	+	future = s.scheduleAtFixedRate(r, randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2204	+	assertFalse(future.isDone());
2205	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2206	+	assertSame(p, recorder.p);
2207	+
2208	+	recorder.reset();
2209	+	future = s.scheduleWithFixedDelay(r, randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2210	+	assertFalse(future.isDone());
2211	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2212	+	assertSame(p, recorder.p);
2213	+	}
2214	+	}
2215	+
2216	+	// Checking our custom handler above should be sufficient, but
2217	+	// we add some integration tests of standard handlers.
2218	+	final AtomicReference<Thread> thread = new AtomicReference<>();
2219	+	final Runnable setThread = () -> thread.set(Thread.currentThread());
2220	+
2221	+	setRejectedExecutionHandler(p, new ThreadPoolExecutor.AbortPolicy());
2222	+	try {
2223	+	p.execute(setThread);
2224	+	shouldThrow();
2225	+	} catch (RejectedExecutionException success) {}
2226	+	assertNull(thread.get());
2227	+
2228	+	setRejectedExecutionHandler(p, new ThreadPoolExecutor.DiscardPolicy());
2229	+	p.execute(setThread);
2230	+	assertNull(thread.get());
2231	+
2232	+	setRejectedExecutionHandler(p, new ThreadPoolExecutor.CallerRunsPolicy());
2233	+	p.execute(setThread);
2234	+	if (p.isShutdown())
2235	+	assertNull(thread.get());
2236	+	else
2237	+	assertSame(Thread.currentThread(), thread.get());
2238	+
2239	+	setRejectedExecutionHandler(p, savedHandler);
2240	+
2241	+	// check that pool was not perturbed by handlers
2242	+	assertEquals(savedTaskCount, p.getTaskCount());
2243	+	assertEquals(savedCompletedTaskCount, p.getCompletedTaskCount());
2244	+	assertEquals(savedQueueSize, p.getQueue().size());
2245	+	}
2246	+
2247	+	void assertCollectionsEquals(Collection<?> x, Collection<?> y) {
2248	+	assertEquals(x, y);
2249	+	assertEquals(y, x);
2250	+	assertEquals(x.isEmpty(), y.isEmpty());
2251	+	assertEquals(x.size(), y.size());
2252	+	if (x instanceof List) {
2253	+	assertEquals(x.toString(), y.toString());
2254	+	}
2255	+	if (x instanceof List || x instanceof Set) {
2256	+	assertEquals(x.hashCode(), y.hashCode());
2257	+	}
2258	+	if (x instanceof List || x instanceof Deque) {
2259	+	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
2260	+	assertTrue(Arrays.equals(x.toArray(new Object[0]),
2261	+	y.toArray(new Object[0])));
2262	+	}
2263	+	}
2264	+
2265	+	/**
2266	+	* A weaker form of assertCollectionsEquals which does not insist
2267	+	* that the two collections satisfy Object#equals(Object), since
2268	+	* they may use identity semantics as Deques do.
2269	+	*/
2270	+	void assertCollectionsEquivalent(Collection<?> x, Collection<?> y) {
2271	+	if (x instanceof List || x instanceof Set)
2272	+	assertCollectionsEquals(x, y);
2273	+	else {
2274	+	assertEquals(x.isEmpty(), y.isEmpty());
2275	+	assertEquals(x.size(), y.size());
2276	+	assertEquals(new HashSet<Object>(x), new HashSet<Object>(y));
2277	+	if (x instanceof Deque) {
2278	+	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
2279	+	assertTrue(Arrays.equals(x.toArray(new Object[0]),
2280	+	y.toArray(new Object[0])));
2281	+	}
2282	+	}
2283	+	}
2284		}

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