ViewVC Help

View File | Revision Log | Show Annotations | Download File | Root Listing

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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.52 by jsr166, Mon Sep 13 23:19:31 2010 UTC vs.
Revision 1.261 by jsr166, Thu Sep 5 20:51:26 2019 UTC

#	Line 1 | Line 1
1		/*
2	<	* Written by Doug Lea with assistance from members of JCP JSR-166
3	<	* Expert Group and released to the public domain, as explained at
4	<	* http://creativecommons.org/licenses/publicdomain
2	>	* Written by Doug Lea and Martin Buchholz with assistance from
3	>	* members of JCP JSR-166 Expert Group and released to the public
4	>	* domain, as explained at
5	>	* http://creativecommons.org/publicdomain/zero/1.0/
6		* Other contributors include Andrew Wright, Jeffrey Hayes,
7		* Pat Fisher, Mike Judd.
8		*/
9
10	<	import junit.framework.*;
11	<	import java.util.*;
12	<	import java.util.concurrent.*;
10	>	/*
11	>	* @test
12	>	* @summary JSR-166 tck tests, in a number of variations.
13	>	*          The first is the conformance testing variant,
14	>	*          while others also test implementation details.
15	>	* @build *
16	>	* @modules java.management
17	>	* @run junit/othervm/timeout=1000 JSR166TestCase
18	>	* @run junit/othervm/timeout=1000
19	>	*      --add-opens java.base/java.util.concurrent=ALL-UNNAMED
20	>	*      --add-opens java.base/java.lang=ALL-UNNAMED
21	>	*      -Djsr166.testImplementationDetails=true
22	>	*      JSR166TestCase
23	>	* @run junit/othervm/timeout=1000
24	>	*      --add-opens java.base/java.util.concurrent=ALL-UNNAMED
25	>	*      --add-opens java.base/java.lang=ALL-UNNAMED
26	>	*      -Djsr166.testImplementationDetails=true
27	>	*      -Djava.util.concurrent.ForkJoinPool.common.parallelism=0
28	>	*      JSR166TestCase
29	>	* @run junit/othervm/timeout=1000
30	>	*      --add-opens java.base/java.util.concurrent=ALL-UNNAMED
31	>	*      --add-opens java.base/java.lang=ALL-UNNAMED
32	>	*      -Djsr166.testImplementationDetails=true
33	>	*      -Djava.util.concurrent.ForkJoinPool.common.parallelism=1
34	>	*      -Djava.util.secureRandomSeed=true
35	>	*      JSR166TestCase
36	>	* @run junit/othervm/timeout=1000/policy=tck.policy
37	>	*      --add-opens java.base/java.util.concurrent=ALL-UNNAMED
38	>	*      --add-opens java.base/java.lang=ALL-UNNAMED
39	>	*      -Djsr166.testImplementationDetails=true
40	>	*      JSR166TestCase
41	>	*/
42	>
43		import static java.util.concurrent.TimeUnit.MILLISECONDS;
44	<	import java.io.*;
45	<	import java.security.*;
44	>	import static java.util.concurrent.TimeUnit.MINUTES;
45	>	import static java.util.concurrent.TimeUnit.NANOSECONDS;
46	>
47	>	import java.io.ByteArrayInputStream;
48	>	import java.io.ByteArrayOutputStream;
49	>	import java.io.ObjectInputStream;
50	>	import java.io.ObjectOutputStream;
51	>	import java.lang.management.ManagementFactory;
52	>	import java.lang.management.ThreadInfo;
53	>	import java.lang.management.ThreadMXBean;
54	>	import java.lang.reflect.Constructor;
55	>	import java.lang.reflect.Method;
56	>	import java.lang.reflect.Modifier;
57	>	import java.security.CodeSource;
58	>	import java.security.Permission;
59	>	import java.security.PermissionCollection;
60	>	import java.security.Permissions;
61	>	import java.security.Policy;
62	>	import java.security.ProtectionDomain;
63	>	import java.security.SecurityPermission;
64	>	import java.util.ArrayList;
65	>	import java.util.Arrays;
66	>	import java.util.Collection;
67	>	import java.util.Collections;
68	>	import java.util.Date;
69	>	import java.util.Deque;
70	>	import java.util.Enumeration;
71	>	import java.util.HashSet;
72	>	import java.util.Iterator;
73	>	import java.util.List;
74	>	import java.util.NoSuchElementException;
75	>	import java.util.PropertyPermission;
76	>	import java.util.Set;
77	>	import java.util.concurrent.BlockingQueue;
78	>	import java.util.concurrent.Callable;
79	>	import java.util.concurrent.CountDownLatch;
80	>	import java.util.concurrent.CyclicBarrier;
81	>	import java.util.concurrent.ExecutionException;
82	>	import java.util.concurrent.Executor;
83	>	import java.util.concurrent.Executors;
84	>	import java.util.concurrent.ExecutorService;
85	>	import java.util.concurrent.ForkJoinPool;
86	>	import java.util.concurrent.Future;
87	>	import java.util.concurrent.FutureTask;
88	>	import java.util.concurrent.RecursiveAction;
89	>	import java.util.concurrent.RecursiveTask;
90	>	import java.util.concurrent.RejectedExecutionException;
91	>	import java.util.concurrent.RejectedExecutionHandler;
92	>	import java.util.concurrent.Semaphore;
93	>	import java.util.concurrent.ScheduledExecutorService;
94	>	import java.util.concurrent.ScheduledFuture;
95	>	import java.util.concurrent.SynchronousQueue;
96	>	import java.util.concurrent.ThreadFactory;
97	>	import java.util.concurrent.ThreadLocalRandom;
98	>	import java.util.concurrent.ThreadPoolExecutor;
99	>	import java.util.concurrent.TimeUnit;
100	>	import java.util.concurrent.TimeoutException;
101	>	import java.util.concurrent.atomic.AtomicBoolean;
102	>	import java.util.concurrent.atomic.AtomicReference;
103	>	import java.util.regex.Pattern;
104	>
105	>	import junit.framework.Test;
106	>	import junit.framework.TestCase;
107	>	import junit.framework.TestResult;
108	>	import junit.framework.TestSuite;
109
110		/**
111		* Base class for JSR166 Junit TCK tests.  Defines some constants,
#	Line 23 | Line 117 | import java.security.*;
117		*
118		* <ol>
119		*
120	<	* <li> All assertions in code running in generated threads must use
121	<	* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
122	<	* #threadAssertEquals}, or {@link #threadAssertNull}, (not
123	<	* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
124	<	* particularly recommended) for other code to use these forms too.
125	<	* Only the most typically used JUnit assertion methods are defined
126	<	* this way, but enough to live with.</li>
120	>	* <li>All code not running in the main test thread (manually spawned threads
121	>	* or the common fork join pool) must be checked for failure (and completion!).
122	>	* Mechanisms that can be used to ensure this are:
123	>	*   <ol>
124	>	*   <li>Signalling via a synchronizer like AtomicInteger or CountDownLatch
125	>	*    that the task completed normally, which is checked before returning from
126	>	*    the test method in the main thread.
127	>	*   <li>Using the forms {@link #threadFail}, {@link #threadAssertTrue},
128	>	*    or {@link #threadAssertNull}, (not {@code fail}, {@code assertTrue}, etc.)
129	>	*    Only the most typically used JUnit assertion methods are defined
130	>	*    this way, but enough to live with.
131	>	*   <li>Recording failure explicitly using {@link #threadUnexpectedException}
132	>	*    or {@link #threadRecordFailure}.
133	>	*   <li>Using a wrapper like CheckedRunnable that uses one the mechanisms above.
134	>	*   </ol>
135		*
136	<	* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
136	>	* <li>If you override {@link #setUp} or {@link #tearDown}, make sure
137		* to invoke {@code super.setUp} and {@code super.tearDown} within
138		* them. These methods are used to clear and check for thread
139	<	* assertion failures.</li>
139	>	* assertion failures.
140		*
141		* <li>All delays and timeouts must use one of the constants {@code
142		* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
#	Line 45 | Line 147 | import java.security.*;
147		* is always discriminable as larger than SHORT and smaller than
148		* MEDIUM.  And so on. These constants are set to conservative values,
149		* but even so, if there is ever any doubt, they can all be increased
150	<	* in one spot to rerun tests on slower platforms.</li>
150	>	* in one spot to rerun tests on slower platforms.
151		*
152	<	* <li> All threads generated must be joined inside each test case
152	>	* <li>All threads generated must be joined inside each test case
153		* method (or {@code fail} to do so) before returning from the
154		* method. The {@code joinPool} method can be used to do this when
155	<	* using Executors.</li>
155	>	* using Executors.
156		*
157		* </ol>
158		*
159	<	* <p> <b>Other notes</b>
159	>	* <p><b>Other notes</b>
160		* <ul>
161		*
162	<	* <li> Usually, there is one testcase method per JSR166 method
162	>	* <li>Usually, there is one testcase method per JSR166 method
163		* covering "normal" operation, and then as many exception-testing
164		* methods as there are exceptions the method can throw. Sometimes
165		* there are multiple tests per JSR166 method when the different
166		* "normal" behaviors differ significantly. And sometimes testcases
167	<	* cover multiple methods when they cannot be tested in
66	<	* isolation.</li>
167	>	* cover multiple methods when they cannot be tested in isolation.
168		*
169	<	* <li> The documentation style for testcases is to provide as javadoc
169	>	* <li>The documentation style for testcases is to provide as javadoc
170		* a simple sentence or two describing the property that the testcase
171		* method purports to test. The javadocs do not say anything about how
172	<	* the property is tested. To find out, read the code.</li>
172	>	* the property is tested. To find out, read the code.
173		*
174	<	* <li> These tests are "conformance tests", and do not attempt to
174	>	* <li>These tests are "conformance tests", and do not attempt to
175		* test throughput, latency, scalability or other performance factors
176		* (see the separate "jtreg" tests for a set intended to check these
177		* for the most central aspects of functionality.) So, most tests use
178		* the smallest sensible numbers of threads, collection sizes, etc
179	<	* needed to check basic conformance.</li>
179	>	* needed to check basic conformance.
180		*
181		* <li>The test classes currently do not declare inclusion in
182		* any particular package to simplify things for people integrating
183	<	* them in TCK test suites.</li>
183	>	* them in TCK test suites.
184		*
185	<	* <li> As a convenience, the {@code main} of this class (JSR166TestCase)
186	<	* runs all JSR166 unit tests.</li>
185	>	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
186	>	* runs all JSR166 unit tests.
187		*
188		* </ul>
189		*/
#	Line 90 | Line 191 | public class JSR166TestCase extends Test
191		private static final boolean useSecurityManager =
192		Boolean.getBoolean("jsr166.useSecurityManager");
193
194	+	protected static final boolean expensiveTests =
195	+	Boolean.getBoolean("jsr166.expensiveTests");
196	+
197	+	/**
198	+	* If true, also run tests that are not part of the official tck
199	+	* because they test unspecified implementation details.
200	+	*/
201	+	protected static final boolean testImplementationDetails =
202	+	Boolean.getBoolean("jsr166.testImplementationDetails");
203	+
204	+	/**
205	+	* If true, report on stdout all "slow" tests, that is, ones that
206	+	* take more than profileThreshold milliseconds to execute.
207	+	*/
208	+	private static final boolean profileTests =
209	+	Boolean.getBoolean("jsr166.profileTests");
210	+
211	+	/**
212	+	* The number of milliseconds that tests are permitted for
213	+	* execution without being reported, when profileTests is set.
214	+	*/
215	+	private static final long profileThreshold =
216	+	Long.getLong("jsr166.profileThreshold", 100);
217	+
218	+	/**
219	+	* The number of repetitions per test (for tickling rare bugs).
220	+	*/
221	+	private static final int runsPerTest =
222	+	Integer.getInteger("jsr166.runsPerTest", 1);
223	+
224	+	/**
225	+	* The number of repetitions of the test suite (for finding leaks?).
226	+	*/
227	+	private static final int suiteRuns =
228	+	Integer.getInteger("jsr166.suiteRuns", 1);
229	+
230	+	/**
231	+	* Returns the value of the system property, or NaN if not defined.
232	+	*/
233	+	private static float systemPropertyValue(String name) {
234	+	String floatString = System.getProperty(name);
235	+	if (floatString == null)
236	+	return Float.NaN;
237	+	try {
238	+	return Float.parseFloat(floatString);
239	+	} catch (NumberFormatException ex) {
240	+	throw new IllegalArgumentException(
241	+	String.format("Bad float value in system property %s=%s",
242	+	name, floatString));
243	+	}
244	+	}
245	+
246	+	/**
247	+	* The scaling factor to apply to standard delays used in tests.
248	+	* May be initialized from any of:
249	+	* - the "jsr166.delay.factor" system property
250	+	* - the "test.timeout.factor" system property (as used by jtreg)
251	+	*   See: http://openjdk.java.net/jtreg/tag-spec.html
252	+	* - hard-coded fuzz factor when using a known slowpoke VM
253	+	*/
254	+	private static final float delayFactor = delayFactor();
255	+
256	+	private static float delayFactor() {
257	+	float x;
258	+	if (!Float.isNaN(x = systemPropertyValue("jsr166.delay.factor")))
259	+	return x;
260	+	if (!Float.isNaN(x = systemPropertyValue("test.timeout.factor")))
261	+	return x;
262	+	String prop = System.getProperty("java.vm.version");
263	+	if (prop != null && prop.matches(".*debug.*"))
264	+	return 4.0f; // How much slower is fastdebug than product?!
265	+	return 1.0f;
266	+	}
267	+
268	+	public JSR166TestCase() { super(); }
269	+	public JSR166TestCase(String name) { super(name); }
270	+
271	+	/**
272	+	* A filter for tests to run, matching strings of the form
273	+	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
274	+	* Usefully combined with jsr166.runsPerTest.
275	+	*/
276	+	private static final Pattern methodFilter = methodFilter();
277	+
278	+	private static Pattern methodFilter() {
279	+	String regex = System.getProperty("jsr166.methodFilter");
280	+	return (regex == null) ? null : Pattern.compile(regex);
281	+	}
282	+
283	+	// Instrumentation to debug very rare, but very annoying hung test runs.
284	+	static volatile TestCase currentTestCase;
285	+	// static volatile int currentRun = 0;
286	+	static {
287	+	Runnable checkForWedgedTest = new Runnable() { public void run() {
288	+	// Avoid spurious reports with enormous runsPerTest.
289	+	// A single test case run should never take more than 1 second.
290	+	// But let's cap it at the high end too ...
291	+	final int timeoutMinutesMin = Math.max(runsPerTest / 60, 1)
292	+	* Math.max((int) delayFactor, 1);
293	+	final int timeoutMinutes = Math.min(15, timeoutMinutesMin);
294	+	for (TestCase lastTestCase = currentTestCase;;) {
295	+	try { MINUTES.sleep(timeoutMinutes); }
296	+	catch (InterruptedException unexpected) { break; }
297	+	if (lastTestCase == currentTestCase) {
298	+	System.err.printf(
299	+	"Looks like we're stuck running test: %s%n",
300	+	lastTestCase);
301	+	//                     System.err.printf(
302	+	//                         "Looks like we're stuck running test: %s (%d/%d)%n",
303	+	//                         lastTestCase, currentRun, runsPerTest);
304	+	//                     System.err.println("availableProcessors=" +
305	+	//                         Runtime.getRuntime().availableProcessors());
306	+	//                     System.err.printf("cpu model = %s%n", cpuModel());
307	+	dumpTestThreads();
308	+	// one stack dump is probably enough; more would be spam
309	+	break;
310	+	}
311	+	lastTestCase = currentTestCase;
312	+	}}};
313	+	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
314	+	thread.setDaemon(true);
315	+	thread.start();
316	+	}
317	+
318	+	//     public static String cpuModel() {
319	+	//         try {
320	+	//             java.util.regex.Matcher matcher
321	+	//               = Pattern.compile("model name\\s*: (.*)")
322	+	//                 .matcher(new String(
323	+	//                     java.nio.file.Files.readAllBytes(
324	+	//                         java.nio.file.Paths.get("/proc/cpuinfo")), "UTF-8"));
325	+	//             matcher.find();
326	+	//             return matcher.group(1);
327	+	//         } catch (Exception ex) { return null; }
328	+	//     }
329	+
330	+	public void runBare() throws Throwable {
331	+	currentTestCase = this;
332	+	if (methodFilter == null
333	+	|| methodFilter.matcher(toString()).find())
334	+	super.runBare();
335	+	}
336	+
337	+	protected void runTest() throws Throwable {
338	+	for (int i = 0; i < runsPerTest; i++) {
339	+	// currentRun = i;
340	+	if (profileTests)
341	+	runTestProfiled();
342	+	else
343	+	super.runTest();
344	+	}
345	+	}
346	+
347	+	protected void runTestProfiled() throws Throwable {
348	+	for (int i = 0; i < 2; i++) {
349	+	long startTime = System.nanoTime();
350	+	super.runTest();
351	+	long elapsedMillis = millisElapsedSince(startTime);
352	+	if (elapsedMillis < profileThreshold)
353	+	break;
354	+	// Never report first run of any test; treat it as a
355	+	// warmup run, notably to trigger all needed classloading,
356	+	if (i > 0)
357	+	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
358	+	}
359	+	}
360	+
361		/**
362	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
362	>	* Runs all JSR166 unit tests using junit.textui.TestRunner.
363		*/
364		public static void main(String[] args) {
365	+	main(suite(), args);
366	+	}
367	+
368	+	static class PithyResultPrinter extends junit.textui.ResultPrinter {
369	+	PithyResultPrinter(java.io.PrintStream writer) { super(writer); }
370	+	long runTime;
371	+	public void startTest(Test test) {}
372	+	protected void printHeader(long runTime) {
373	+	this.runTime = runTime; // defer printing for later
374	+	}
375	+	protected void printFooter(TestResult result) {
376	+	if (result.wasSuccessful()) {
377	+	getWriter().println("OK (" + result.runCount() + " tests)"
378	+	+ "  Time: " + elapsedTimeAsString(runTime));
379	+	} else {
380	+	getWriter().println("Time: " + elapsedTimeAsString(runTime));
381	+	super.printFooter(result);
382	+	}
383	+	}
384	+	}
385	+
386	+	/**
387	+	* Returns a TestRunner that doesn't bother with unnecessary
388	+	* fluff, like printing a "." for each test case.
389	+	*/
390	+	static junit.textui.TestRunner newPithyTestRunner() {
391	+	junit.textui.TestRunner runner = new junit.textui.TestRunner();
392	+	runner.setPrinter(new PithyResultPrinter(System.out));
393	+	return runner;
394	+	}
395	+
396	+	/**
397	+	* Runs all unit tests in the given test suite.
398	+	* Actual behavior influenced by jsr166.* system properties.
399	+	*/
400	+	static void main(Test suite, String[] args) {
401		if (useSecurityManager) {
402		System.err.println("Setting a permissive security manager");
403		Policy.setPolicy(permissivePolicy());
404		System.setSecurityManager(new SecurityManager());
405		}
406	<	int iters = 1;
407	<	if (args.length > 0)
408	<	iters = Integer.parseInt(args[0]);
409	<	Test s = suite();
106	<	for (int i = 0; i < iters; ++i) {
107	<	junit.textui.TestRunner.run(s);
406	>	for (int i = 0; i < suiteRuns; i++) {
407	>	TestResult result = newPithyTestRunner().doRun(suite);
408	>	if (!result.wasSuccessful())
409	>	System.exit(1);
410		System.gc();
411		System.runFinalization();
412		}
111	–	System.exit(0);
413		}
414
415	+	public static TestSuite newTestSuite(Object... suiteOrClasses) {
416	+	TestSuite suite = new TestSuite();
417	+	for (Object suiteOrClass : suiteOrClasses) {
418	+	if (suiteOrClass instanceof TestSuite)
419	+	suite.addTest((TestSuite) suiteOrClass);
420	+	else if (suiteOrClass instanceof Class)
421	+	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
422	+	else
423	+	throw new ClassCastException("not a test suite or class");
424	+	}
425	+	return suite;
426	+	}
427	+
428	+	public static void addNamedTestClasses(TestSuite suite,
429	+	String... testClassNames) {
430	+	for (String testClassName : testClassNames) {
431	+	try {
432	+	Class<?> testClass = Class.forName(testClassName);
433	+	Method m = testClass.getDeclaredMethod("suite");
434	+	suite.addTest(newTestSuite((Test)m.invoke(null)));
435	+	} catch (ReflectiveOperationException e) {
436	+	throw new AssertionError("Missing test class", e);
437	+	}
438	+	}
439	+	}
440	+
441	+	public static final double JAVA_CLASS_VERSION;
442	+	public static final String JAVA_SPECIFICATION_VERSION;
443	+	static {
444	+	try {
445	+	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
446	+	new java.security.PrivilegedAction<Double>() {
447	+	public Double run() {
448	+	return Double.valueOf(System.getProperty("java.class.version"));}});
449	+	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
450	+	new java.security.PrivilegedAction<String>() {
451	+	public String run() {
452	+	return System.getProperty("java.specification.version");}});
453	+	} catch (Throwable t) {
454	+	throw new Error(t);
455	+	}
456	+	}
457	+
458	+	public static boolean atLeastJava6()  { return JAVA_CLASS_VERSION >= 50.0; }
459	+	public static boolean atLeastJava7()  { return JAVA_CLASS_VERSION >= 51.0; }
460	+	public static boolean atLeastJava8()  { return JAVA_CLASS_VERSION >= 52.0; }
461	+	public static boolean atLeastJava9()  { return JAVA_CLASS_VERSION >= 53.0; }
462	+	public static boolean atLeastJava10() { return JAVA_CLASS_VERSION >= 54.0; }
463	+	public static boolean atLeastJava11() { return JAVA_CLASS_VERSION >= 55.0; }
464	+	public static boolean atLeastJava12() { return JAVA_CLASS_VERSION >= 56.0; }
465	+	public static boolean atLeastJava13() { return JAVA_CLASS_VERSION >= 57.0; }
466	+	public static boolean atLeastJava14() { return JAVA_CLASS_VERSION >= 58.0; }
467	+	public static boolean atLeastJava15() { return JAVA_CLASS_VERSION >= 59.0; }
468	+	public static boolean atLeastJava16() { return JAVA_CLASS_VERSION >= 60.0; }
469	+	public static boolean atLeastJava17() { return JAVA_CLASS_VERSION >= 61.0; }
470	+
471		/**
472	<	* Collects all JSR166 unit tests as one suite
472	>	* Collects all JSR166 unit tests as one suite.
473		*/
474		public static Test suite() {
475	<	TestSuite suite = new TestSuite("JSR166 Unit Tests");
476	<
477	<	suite.addTest(new TestSuite(ForkJoinPoolTest.class));
478	<	suite.addTest(new TestSuite(ForkJoinTaskTest.class));
479	<	suite.addTest(new TestSuite(RecursiveActionTest.class));
480	<	suite.addTest(new TestSuite(RecursiveTaskTest.class));
481	<	suite.addTest(new TestSuite(LinkedTransferQueueTest.class));
482	<	suite.addTest(new TestSuite(PhaserTest.class));
483	<	suite.addTest(new TestSuite(ThreadLocalRandomTest.class));
484	<	suite.addTest(new TestSuite(AbstractExecutorServiceTest.class));
485	<	suite.addTest(new TestSuite(AbstractQueueTest.class));
486	<	suite.addTest(new TestSuite(AbstractQueuedSynchronizerTest.class));
487	<	suite.addTest(new TestSuite(AbstractQueuedLongSynchronizerTest.class));
488	<	suite.addTest(new TestSuite(ArrayBlockingQueueTest.class));
489	<	suite.addTest(new TestSuite(ArrayDequeTest.class));
490	<	suite.addTest(new TestSuite(AtomicBooleanTest.class));
491	<	suite.addTest(new TestSuite(AtomicIntegerArrayTest.class));
492	<	suite.addTest(new TestSuite(AtomicIntegerFieldUpdaterTest.class));
493	<	suite.addTest(new TestSuite(AtomicIntegerTest.class));
494	<	suite.addTest(new TestSuite(AtomicLongArrayTest.class));
495	<	suite.addTest(new TestSuite(AtomicLongFieldUpdaterTest.class));
496	<	suite.addTest(new TestSuite(AtomicLongTest.class));
497	<	suite.addTest(new TestSuite(AtomicMarkableReferenceTest.class));
498	<	suite.addTest(new TestSuite(AtomicReferenceArrayTest.class));
499	<	suite.addTest(new TestSuite(AtomicReferenceFieldUpdaterTest.class));
500	<	suite.addTest(new TestSuite(AtomicReferenceTest.class));
501	<	suite.addTest(new TestSuite(AtomicStampedReferenceTest.class));
502	<	suite.addTest(new TestSuite(ConcurrentHashMapTest.class));
503	<	suite.addTest(new TestSuite(ConcurrentLinkedDequeTest.class));
504	<	suite.addTest(new TestSuite(ConcurrentLinkedQueueTest.class));
505	<	suite.addTest(new TestSuite(ConcurrentSkipListMapTest.class));
506	<	suite.addTest(new TestSuite(ConcurrentSkipListSubMapTest.class));
507	<	suite.addTest(new TestSuite(ConcurrentSkipListSetTest.class));
508	<	suite.addTest(new TestSuite(ConcurrentSkipListSubSetTest.class));
509	<	suite.addTest(new TestSuite(CopyOnWriteArrayListTest.class));
510	<	suite.addTest(new TestSuite(CopyOnWriteArraySetTest.class));
511	<	suite.addTest(new TestSuite(CountDownLatchTest.class));
512	<	suite.addTest(new TestSuite(CyclicBarrierTest.class));
513	<	suite.addTest(new TestSuite(DelayQueueTest.class));
514	<	suite.addTest(new TestSuite(EntryTest.class));
515	<	suite.addTest(new TestSuite(ExchangerTest.class));
516	<	suite.addTest(new TestSuite(ExecutorsTest.class));
517	<	suite.addTest(new TestSuite(ExecutorCompletionServiceTest.class));
518	<	suite.addTest(new TestSuite(FutureTaskTest.class));
519	<	suite.addTest(new TestSuite(LinkedBlockingDequeTest.class));
520	<	suite.addTest(new TestSuite(LinkedBlockingQueueTest.class));
521	<	suite.addTest(new TestSuite(LinkedListTest.class));
522	<	suite.addTest(new TestSuite(LockSupportTest.class));
523	<	suite.addTest(new TestSuite(PriorityBlockingQueueTest.class));
524	<	suite.addTest(new TestSuite(PriorityQueueTest.class));
525	<	suite.addTest(new TestSuite(ReentrantLockTest.class));
526	<	suite.addTest(new TestSuite(ReentrantReadWriteLockTest.class));
527	<	suite.addTest(new TestSuite(ScheduledExecutorTest.class));
528	<	suite.addTest(new TestSuite(ScheduledExecutorSubclassTest.class));
529	<	suite.addTest(new TestSuite(SemaphoreTest.class));
530	<	suite.addTest(new TestSuite(SynchronousQueueTest.class));
531	<	suite.addTest(new TestSuite(SystemTest.class));
532	<	suite.addTest(new TestSuite(ThreadLocalTest.class));
533	<	suite.addTest(new TestSuite(ThreadPoolExecutorTest.class));
534	<	suite.addTest(new TestSuite(ThreadPoolExecutorSubclassTest.class));
535	<	suite.addTest(new TestSuite(ThreadTest.class));
536	<	suite.addTest(new TestSuite(TimeUnitTest.class));
537	<	suite.addTest(new TestSuite(TreeMapTest.class));
538	<	suite.addTest(new TestSuite(TreeSetTest.class));
539	<	suite.addTest(new TestSuite(TreeSubMapTest.class));
540	<	suite.addTest(new TestSuite(TreeSubSetTest.class));
475	>	// Java7+ test classes
476	>	TestSuite suite = newTestSuite(
477	>	ForkJoinPoolTest.suite(),
478	>	ForkJoinTaskTest.suite(),
479	>	RecursiveActionTest.suite(),
480	>	RecursiveTaskTest.suite(),
481	>	LinkedTransferQueueTest.suite(),
482	>	PhaserTest.suite(),
483	>	ThreadLocalRandomTest.suite(),
484	>	AbstractExecutorServiceTest.suite(),
485	>	AbstractQueueTest.suite(),
486	>	AbstractQueuedSynchronizerTest.suite(),
487	>	AbstractQueuedLongSynchronizerTest.suite(),
488	>	ArrayBlockingQueueTest.suite(),
489	>	ArrayDequeTest.suite(),
490	>	ArrayListTest.suite(),
491	>	AtomicBooleanTest.suite(),
492	>	AtomicIntegerArrayTest.suite(),
493	>	AtomicIntegerFieldUpdaterTest.suite(),
494	>	AtomicIntegerTest.suite(),
495	>	AtomicLongArrayTest.suite(),
496	>	AtomicLongFieldUpdaterTest.suite(),
497	>	AtomicLongTest.suite(),
498	>	AtomicMarkableReferenceTest.suite(),
499	>	AtomicReferenceArrayTest.suite(),
500	>	AtomicReferenceFieldUpdaterTest.suite(),
501	>	AtomicReferenceTest.suite(),
502	>	AtomicStampedReferenceTest.suite(),
503	>	ConcurrentHashMapTest.suite(),
504	>	ConcurrentLinkedDequeTest.suite(),
505	>	ConcurrentLinkedQueueTest.suite(),
506	>	ConcurrentSkipListMapTest.suite(),
507	>	ConcurrentSkipListSubMapTest.suite(),
508	>	ConcurrentSkipListSetTest.suite(),
509	>	ConcurrentSkipListSubSetTest.suite(),
510	>	CopyOnWriteArrayListTest.suite(),
511	>	CopyOnWriteArraySetTest.suite(),
512	>	CountDownLatchTest.suite(),
513	>	CountedCompleterTest.suite(),
514	>	CyclicBarrierTest.suite(),
515	>	DelayQueueTest.suite(),
516	>	EntryTest.suite(),
517	>	ExchangerTest.suite(),
518	>	ExecutorsTest.suite(),
519	>	ExecutorCompletionServiceTest.suite(),
520	>	FutureTaskTest.suite(),
521	>	HashtableTest.suite(),
522	>	LinkedBlockingDequeTest.suite(),
523	>	LinkedBlockingQueueTest.suite(),
524	>	LinkedListTest.suite(),
525	>	LockSupportTest.suite(),
526	>	PriorityBlockingQueueTest.suite(),
527	>	PriorityQueueTest.suite(),
528	>	ReentrantLockTest.suite(),
529	>	ReentrantReadWriteLockTest.suite(),
530	>	ScheduledExecutorTest.suite(),
531	>	ScheduledExecutorSubclassTest.suite(),
532	>	SemaphoreTest.suite(),
533	>	SynchronousQueueTest.suite(),
534	>	SystemTest.suite(),
535	>	ThreadLocalTest.suite(),
536	>	ThreadPoolExecutorTest.suite(),
537	>	ThreadPoolExecutorSubclassTest.suite(),
538	>	ThreadTest.suite(),
539	>	TimeUnitTest.suite(),
540	>	TreeMapTest.suite(),
541	>	TreeSetTest.suite(),
542	>	TreeSubMapTest.suite(),
543	>	TreeSubSetTest.suite(),
544	>	VectorTest.suite());
545	>
546	>	// Java8+ test classes
547	>	if (atLeastJava8()) {
548	>	String[] java8TestClassNames = {
549	>	"ArrayDeque8Test",
550	>	"Atomic8Test",
551	>	"CompletableFutureTest",
552	>	"ConcurrentHashMap8Test",
553	>	"CountedCompleter8Test",
554	>	"DoubleAccumulatorTest",
555	>	"DoubleAdderTest",
556	>	"ForkJoinPool8Test",
557	>	"ForkJoinTask8Test",
558	>	"HashMapTest",
559	>	"LinkedBlockingDeque8Test",
560	>	"LinkedBlockingQueue8Test",
561	>	"LinkedHashMapTest",
562	>	"LongAccumulatorTest",
563	>	"LongAdderTest",
564	>	"SplittableRandomTest",
565	>	"StampedLockTest",
566	>	"SubmissionPublisherTest",
567	>	"ThreadLocalRandom8Test",
568	>	"TimeUnit8Test",
569	>	};
570	>	addNamedTestClasses(suite, java8TestClassNames);
571	>	}
572	>
573	>	// Java9+ test classes
574	>	if (atLeastJava9()) {
575	>	String[] java9TestClassNames = {
576	>	"AtomicBoolean9Test",
577	>	"AtomicInteger9Test",
578	>	"AtomicIntegerArray9Test",
579	>	"AtomicLong9Test",
580	>	"AtomicLongArray9Test",
581	>	"AtomicReference9Test",
582	>	"AtomicReferenceArray9Test",
583	>	"ExecutorCompletionService9Test",
584	>	"ForkJoinPool9Test",
585	>	};
586	>	addNamedTestClasses(suite, java9TestClassNames);
587	>	}
588
589		return suite;
590		}
591
592	+	/** Returns list of junit-style test method names in given class. */
593	+	public static ArrayList<String> testMethodNames(Class<?> testClass) {
594	+	Method[] methods = testClass.getDeclaredMethods();
595	+	ArrayList<String> names = new ArrayList<>(methods.length);
596	+	for (Method method : methods) {
597	+	if (method.getName().startsWith("test")
598	+	&& Modifier.isPublic(method.getModifiers())
599	+	// method.getParameterCount() requires jdk8+
600	+	&& method.getParameterTypes().length == 0) {
601	+	names.add(method.getName());
602	+	}
603	+	}
604	+	return names;
605	+	}
606	+
607	+	/**
608	+	* Returns junit-style testSuite for the given test class, but
609	+	* parameterized by passing extra data to each test.
610	+	*/
611	+	public static <ExtraData> Test parameterizedTestSuite
612	+	(Class<? extends JSR166TestCase> testClass,
613	+	Class<ExtraData> dataClass,
614	+	ExtraData data) {
615	+	try {
616	+	TestSuite suite = new TestSuite();
617	+	Constructor c =
618	+	testClass.getDeclaredConstructor(dataClass, String.class);
619	+	for (String methodName : testMethodNames(testClass))
620	+	suite.addTest((Test) c.newInstance(data, methodName));
621	+	return suite;
622	+	} catch (ReflectiveOperationException e) {
623	+	throw new AssertionError(e);
624	+	}
625	+	}
626	+
627	+	/**
628	+	* Returns junit-style testSuite for the jdk8 extension of the
629	+	* given test class, but parameterized by passing extra data to
630	+	* each test.  Uses reflection to allow compilation in jdk7.
631	+	*/
632	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
633	+	(Class<? extends JSR166TestCase> testClass,
634	+	Class<ExtraData> dataClass,
635	+	ExtraData data) {
636	+	if (atLeastJava8()) {
637	+	String name = testClass.getName();
638	+	String name8 = name.replaceAll("Test$", "8Test");
639	+	if (name.equals(name8)) throw new AssertionError(name);
640	+	try {
641	+	return (Test)
642	+	Class.forName(name8)
643	+	.getMethod("testSuite", dataClass)
644	+	.invoke(null, data);
645	+	} catch (ReflectiveOperationException e) {
646	+	throw new AssertionError(e);
647	+	}
648	+	} else {
649	+	return new TestSuite();
650	+	}
651	+	}
652	+
653	+	// Delays for timing-dependent tests, in milliseconds.
654
655		public static long SHORT_DELAY_MS;
656		public static long SMALL_DELAY_MS;
657		public static long MEDIUM_DELAY_MS;
658		public static long LONG_DELAY_MS;
659
660	+	/**
661	+	* A delay significantly longer than LONG_DELAY_MS.
662	+	* Use this in a thread that is waited for via awaitTermination(Thread).
663	+	*/
664	+	public static long LONGER_DELAY_MS;
665	+
666	+	private static final long RANDOM_TIMEOUT;
667	+	private static final long RANDOM_EXPIRED_TIMEOUT;
668	+	private static final TimeUnit RANDOM_TIMEUNIT;
669	+	static {
670	+	ThreadLocalRandom rnd = ThreadLocalRandom.current();
671	+	long[] timeouts = { Long.MIN_VALUE, -1, 0, 1, Long.MAX_VALUE };
672	+	RANDOM_TIMEOUT = timeouts[rnd.nextInt(timeouts.length)];
673	+	RANDOM_EXPIRED_TIMEOUT = timeouts[rnd.nextInt(3)];
674	+	TimeUnit[] timeUnits = TimeUnit.values();
675	+	RANDOM_TIMEUNIT = timeUnits[rnd.nextInt(timeUnits.length)];
676	+	}
677	+
678	+	/**
679	+	* Returns a timeout for use when any value at all will do.
680	+	*/
681	+	static long randomTimeout() { return RANDOM_TIMEOUT; }
682
683		/**
684	<	* Returns the shortest timed delay. This could
197	<	* be reimplemented to use for example a Property.
684	>	* Returns a timeout that means "no waiting", i.e. not positive.
685		*/
686	<	protected long getShortDelay() {
687	<	return 50;
686	>	static long randomExpiredTimeout() { return RANDOM_EXPIRED_TIMEOUT; }
687	>
688	>	/**
689	>	* Returns a random non-null TimeUnit.
690	>	*/
691	>	static TimeUnit randomTimeUnit() { return RANDOM_TIMEUNIT; }
692	>
693	>	/**
694	>	* Returns a random boolean; a "coin flip".
695	>	*/
696	>	static boolean randomBoolean() {
697	>	return ThreadLocalRandom.current().nextBoolean();
698		}
699
700	+	/**
701	+	* Returns a random element from given choices.
702	+	*/
703	+	<T> T chooseRandomly(T... choices) {
704	+	return choices[ThreadLocalRandom.current().nextInt(choices.length)];
705	+	}
706	+
707	+	/**
708	+	* Returns the shortest timed delay. This can be scaled up for
709	+	* slow machines using the jsr166.delay.factor system property,
710	+	* or via jtreg's -timeoutFactor: flag.
711	+	* http://openjdk.java.net/jtreg/command-help.html
712	+	*/
713	+	protected long getShortDelay() {
714	+	return (long) (50 * delayFactor);
715	+	}
716
717		/**
718		* Sets delays as multiples of SHORT_DELAY.
719		*/
720		protected void setDelays() {
721		SHORT_DELAY_MS = getShortDelay();
722	<	SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
722	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
723		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
724	<	LONG_DELAY_MS = SHORT_DELAY_MS * 50;
724	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
725	>	LONGER_DELAY_MS = 2 * LONG_DELAY_MS;
726	>	}
727	>
728	>	private static final long TIMEOUT_DELAY_MS
729	>	= (long) (12.0 * Math.cbrt(delayFactor));
730	>
731	>	/**
732	>	* Returns a timeout in milliseconds to be used in tests that verify
733	>	* that operations block or time out.  We want this to be longer
734	>	* than the OS scheduling quantum, but not too long, so don't scale
735	>	* linearly with delayFactor; we use "crazy" cube root instead.
736	>	*/
737	>	static long timeoutMillis() {
738	>	return TIMEOUT_DELAY_MS;
739	>	}
740	>
741	>	/**
742	>	* Returns a new Date instance representing a time at least
743	>	* delayMillis milliseconds in the future.
744	>	*/
745	>	Date delayedDate(long delayMillis) {
746	>	// Add 1 because currentTimeMillis is known to round into the past.
747	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
748		}
749
750		/**
751	<	* Flag set true if any threadAssert methods fail
751	>	* The first exception encountered if any threadAssertXXX method fails.
752		*/
753	<	volatile boolean threadFailed;
753	>	private final AtomicReference<Throwable> threadFailure
754	>	= new AtomicReference<>(null);
755
756		/**
757	<	* Initializes test to indicate that no thread assertions have failed
757	>	* Records an exception so that it can be rethrown later in the test
758	>	* harness thread, triggering a test case failure.  Only the first
759	>	* failure is recorded; subsequent calls to this method from within
760	>	* the same test have no effect.
761		*/
762	+	public void threadRecordFailure(Throwable t) {
763	+	System.err.println(t);
764	+	if (threadFailure.compareAndSet(null, t))
765	+	dumpTestThreads();
766	+	}
767	+
768		public void setUp() {
769		setDelays();
770	<	threadFailed = false;
770	>	}
771	>
772	>	void tearDownFail(String format, Object... args) {
773	>	String msg = toString() + ": " + String.format(format, args);
774	>	System.err.println(msg);
775	>	dumpTestThreads();
776	>	throw new AssertionError(msg);
777		}
778
779		/**
780	<	* Triggers test case failure if any thread assertions have failed
781	<	*/
782	<	public void tearDown() {
783	<	assertFalse(threadFailed);
780	>	* Extra checks that get done for all test cases.
781	>	*
782	>	* Triggers test case failure if any thread assertions have failed,
783	>	* by rethrowing, in the test harness thread, any exception recorded
784	>	* earlier by threadRecordFailure.
785	>	*
786	>	* Triggers test case failure if interrupt status is set in the main thread.
787	>	*/
788	>	public void tearDown() throws Exception {
789	>	Throwable t = threadFailure.getAndSet(null);
790	>	if (t != null) {
791	>	if (t instanceof Error)
792	>	throw (Error) t;
793	>	else if (t instanceof RuntimeException)
794	>	throw (RuntimeException) t;
795	>	else if (t instanceof Exception)
796	>	throw (Exception) t;
797	>	else
798	>	throw new AssertionError(t.toString(), t);
799	>	}
800	>
801	>	if (Thread.interrupted())
802	>	tearDownFail("interrupt status set in main thread");
803	>
804	>	checkForkJoinPoolThreadLeaks();
805	>	}
806	>
807	>	/**
808	>	* Finds missing PoolCleaners
809	>	*/
810	>	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
811	>	Thread[] survivors = new Thread[7];
812	>	int count = Thread.enumerate(survivors);
813	>	for (int i = 0; i < count; i++) {
814	>	Thread thread = survivors[i];
815	>	String name = thread.getName();
816	>	if (name.startsWith("ForkJoinPool-")) {
817	>	// give thread some time to terminate
818	>	thread.join(LONG_DELAY_MS);
819	>	if (thread.isAlive())
820	>	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
821	>	thread);
822	>	}
823	>	}
824	>
825	>	if (!ForkJoinPool.commonPool()
826	>	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
827	>	tearDownFail("ForkJoin common pool thread stuck");
828		}
829
830		/**
831	<	* Fail, also setting status to indicate current testcase should fail
831	>	* Just like fail(reason), but additionally recording (using
832	>	* threadRecordFailure) any AssertionError thrown, so that the
833	>	* current testcase will fail.
834		*/
835		public void threadFail(String reason) {
836	<	threadFailed = true;
837	<	fail(reason);
836	>	try {
837	>	fail(reason);
838	>	} catch (AssertionError fail) {
839	>	threadRecordFailure(fail);
840	>	throw fail;
841	>	}
842		}
843
844		/**
845	<	* If expression not true, set status to indicate current testcase
846	<	* should fail
845	>	* Just like assertTrue(b), but additionally recording (using
846	>	* threadRecordFailure) any AssertionError thrown, so that the
847	>	* current testcase will fail.
848		*/
849		public void threadAssertTrue(boolean b) {
850	<	if (!b) {
248	<	threadFailed = true;
850	>	try {
851		assertTrue(b);
852	+	} catch (AssertionError fail) {
853	+	threadRecordFailure(fail);
854	+	throw fail;
855		}
856		}
857
858		/**
859	<	* If expression not false, set status to indicate current testcase
860	<	* should fail
859	>	* Just like assertFalse(b), but additionally recording (using
860	>	* threadRecordFailure) any AssertionError thrown, so that the
861	>	* current testcase will fail.
862		*/
863		public void threadAssertFalse(boolean b) {
864	<	if (b) {
259	<	threadFailed = true;
864	>	try {
865		assertFalse(b);
866	+	} catch (AssertionError fail) {
867	+	threadRecordFailure(fail);
868	+	throw fail;
869		}
870		}
871
872		/**
873	<	* If argument not null, set status to indicate current testcase
874	<	* should fail
873	>	* Just like assertNull(x), but additionally recording (using
874	>	* threadRecordFailure) any AssertionError thrown, so that the
875	>	* current testcase will fail.
876		*/
877		public void threadAssertNull(Object x) {
878	<	if (x != null) {
270	<	threadFailed = true;
878	>	try {
879		assertNull(x);
880	+	} catch (AssertionError fail) {
881	+	threadRecordFailure(fail);
882	+	throw fail;
883		}
884		}
885
886		/**
887	<	* If arguments not equal, set status to indicate current testcase
888	<	* should fail
887	>	* Just like assertEquals(x, y), but additionally recording (using
888	>	* threadRecordFailure) any AssertionError thrown, so that the
889	>	* current testcase will fail.
890		*/
891		public void threadAssertEquals(long x, long y) {
892	<	if (x != y) {
281	<	threadFailed = true;
892	>	try {
893		assertEquals(x, y);
894	+	} catch (AssertionError fail) {
895	+	threadRecordFailure(fail);
896	+	throw fail;
897		}
898		}
899
900		/**
901	<	* If arguments not equal, set status to indicate current testcase
902	<	* should fail
901	>	* Just like assertEquals(x, y), but additionally recording (using
902	>	* threadRecordFailure) any AssertionError thrown, so that the
903	>	* current testcase will fail.
904		*/
905		public void threadAssertEquals(Object x, Object y) {
906	<	if (x != y && (x == null || !x.equals(y))) {
292	<	threadFailed = true;
906	>	try {
907		assertEquals(x, y);
908	+	} catch (AssertionError fail) {
909	+	threadRecordFailure(fail);
910	+	throw fail;
911	+	} catch (Throwable fail) {
912	+	threadUnexpectedException(fail);
913		}
914		}
915
916		/**
917	<	* If arguments not identical, set status to indicate current testcase
918	<	* should fail
917	>	* Just like assertSame(x, y), but additionally recording (using
918	>	* threadRecordFailure) any AssertionError thrown, so that the
919	>	* current testcase will fail.
920		*/
921		public void threadAssertSame(Object x, Object y) {
922	<	if (x != y) {
303	<	threadFailed = true;
922	>	try {
923		assertSame(x, y);
924	+	} catch (AssertionError fail) {
925	+	threadRecordFailure(fail);
926	+	throw fail;
927		}
928		}
929
930		/**
931	<	* threadFail with message "should throw exception"
931	>	* Calls threadFail with message "should throw exception".
932		*/
933		public void threadShouldThrow() {
934	<	threadFailed = true;
313	<	fail("should throw exception");
934	>	threadFail("should throw exception");
935		}
936
937		/**
938	<	* threadFail with message "should throw" + exceptionName
938	>	* Calls threadFail with message "should throw" + exceptionName.
939		*/
940		public void threadShouldThrow(String exceptionName) {
941	<	threadFailed = true;
942	<	fail("should throw " + exceptionName);
941	>	threadFail("should throw " + exceptionName);
942	>	}
943	>
944	>	/**
945	>	* Records the given exception using {@link #threadRecordFailure},
946	>	* then rethrows the exception, wrapping it in an AssertionError
947	>	* if necessary.
948	>	*/
949	>	public void threadUnexpectedException(Throwable t) {
950	>	threadRecordFailure(t);
951	>	t.printStackTrace();
952	>	if (t instanceof RuntimeException)
953	>	throw (RuntimeException) t;
954	>	else if (t instanceof Error)
955	>	throw (Error) t;
956	>	else
957	>	throw new AssertionError("unexpected exception: " + t, t);
958		}
959
960		/**
961	<	* threadFail with message "Unexpected exception"
961	>	* Delays, via Thread.sleep, for the given millisecond delay, but
962	>	* if the sleep is shorter than specified, may re-sleep or yield
963	>	* until time elapses.  Ensures that the given time, as measured
964	>	* by System.nanoTime(), has elapsed.
965		*/
966	<	public void threadUnexpectedException() {
967	<	threadFailed = true;
968	<	fail("Unexpected exception");
966	>	static void delay(long millis) throws InterruptedException {
967	>	long nanos = millis * (1000 * 1000);
968	>	final long wakeupTime = System.nanoTime() + nanos;
969	>	do {
970	>	if (millis > 0L)
971	>	Thread.sleep(millis);
972	>	else // too short to sleep
973	>	Thread.yield();
974	>	nanos = wakeupTime - System.nanoTime();
975	>	millis = nanos / (1000 * 1000);
976	>	} while (nanos >= 0L);
977		}
978
979		/**
980	<	* threadFail with message "Unexpected exception", with argument
980	>	* Allows use of try-with-resources with per-test thread pools.
981		*/
982	<	public void threadUnexpectedException(Throwable ex) {
983	<	threadFailed = true;
984	<	ex.printStackTrace();
985	<	fail("Unexpected exception: " + ex);
982	>	class PoolCleaner implements AutoCloseable {
983	>	private final ExecutorService pool;
984	>	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
985	>	public void close() { joinPool(pool); }
986		}
987
988		/**
989	<	* Wait out termination of a thread pool or fail doing so
989	>	* An extension of PoolCleaner that has an action to release the pool.
990		*/
991	<	public void joinPool(ExecutorService exec) {
991	>	class PoolCleanerWithReleaser extends PoolCleaner {
992	>	private final Runnable releaser;
993	>	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
994	>	super(pool);
995	>	this.releaser = releaser;
996	>	}
997	>	public void close() {
998	>	try {
999	>	releaser.run();
1000	>	} finally {
1001	>	super.close();
1002	>	}
1003	>	}
1004	>	}
1005	>
1006	>	PoolCleaner cleaner(ExecutorService pool) {
1007	>	return new PoolCleaner(pool);
1008	>	}
1009	>
1010	>	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
1011	>	return new PoolCleanerWithReleaser(pool, releaser);
1012	>	}
1013	>
1014	>	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
1015	>	return new PoolCleanerWithReleaser(pool, releaser(latch));
1016	>	}
1017	>
1018	>	Runnable releaser(final CountDownLatch latch) {
1019	>	return new Runnable() { public void run() {
1020	>	do { latch.countDown(); }
1021	>	while (latch.getCount() > 0);
1022	>	}};
1023	>	}
1024	>
1025	>	PoolCleaner cleaner(ExecutorService pool, AtomicBoolean flag) {
1026	>	return new PoolCleanerWithReleaser(pool, releaser(flag));
1027	>	}
1028	>
1029	>	Runnable releaser(final AtomicBoolean flag) {
1030	>	return new Runnable() { public void run() { flag.set(true); }};
1031	>	}
1032	>
1033	>	/**
1034	>	* Waits out termination of a thread pool or fails doing so.
1035	>	*/
1036	>	void joinPool(ExecutorService pool) {
1037		try {
1038	<	exec.shutdown();
1039	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
1038	>	pool.shutdown();
1039	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
1040	>	try {
1041	>	threadFail("ExecutorService " + pool +
1042	>	" did not terminate in a timely manner");
1043	>	} finally {
1044	>	// last resort, for the benefit of subsequent tests
1045	>	pool.shutdownNow();
1046	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
1047	>	}
1048	>	}
1049		} catch (SecurityException ok) {
1050		// Allowed in case test doesn't have privs
1051	<	} catch (InterruptedException ie) {
1052	<	fail("Unexpected InterruptedException");
1051	>	} catch (InterruptedException fail) {
1052	>	threadFail("Unexpected InterruptedException");
1053	>	}
1054	>	}
1055	>
1056	>	/**
1057	>	* Like Runnable, but with the freedom to throw anything.
1058	>	* junit folks had the same idea:
1059	>	* http://junit.org/junit5/docs/snapshot/api/org/junit/gen5/api/Executable.html
1060	>	*/
1061	>	interface Action { public void run() throws Throwable; }
1062	>
1063	>	/**
1064	>	* Runs all the given actions in parallel, failing if any fail.
1065	>	* Useful for running multiple variants of tests that are
1066	>	* necessarily individually slow because they must block.
1067	>	*/
1068	>	void testInParallel(Action ... actions) {
1069	>	ExecutorService pool = Executors.newCachedThreadPool();
1070	>	try (PoolCleaner cleaner = cleaner(pool)) {
1071	>	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
1072	>	for (final Action action : actions)
1073	>	futures.add(pool.submit(new CheckedRunnable() {
1074	>	public void realRun() throws Throwable { action.run();}}));
1075	>	for (Future<?> future : futures)
1076	>	try {
1077	>	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
1078	>	} catch (ExecutionException ex) {
1079	>	threadUnexpectedException(ex.getCause());
1080	>	} catch (Exception ex) {
1081	>	threadUnexpectedException(ex);
1082	>	}
1083		}
1084		}
1085
1086	+	/**
1087	+	* A debugging tool to print stack traces of most threads, as jstack does.
1088	+	* Uninteresting threads are filtered out.
1089	+	*/
1090	+	static void dumpTestThreads() {
1091	+	SecurityManager sm = System.getSecurityManager();
1092	+	if (sm != null) {
1093	+	try {
1094	+	System.setSecurityManager(null);
1095	+	} catch (SecurityException giveUp) {
1096	+	return;
1097	+	}
1098	+	}
1099	+
1100	+	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
1101	+	System.err.println("------ stacktrace dump start ------");
1102	+	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
1103	+	final String name = info.getThreadName();
1104	+	String lockName;
1105	+	if ("Signal Dispatcher".equals(name))
1106	+	continue;
1107	+	if ("Reference Handler".equals(name)
1108	+	&& (lockName = info.getLockName()) != null
1109	+	&& lockName.startsWith("java.lang.ref.Reference$Lock"))
1110	+	continue;
1111	+	if ("Finalizer".equals(name)
1112	+	&& (lockName = info.getLockName()) != null
1113	+	&& lockName.startsWith("java.lang.ref.ReferenceQueue$Lock"))
1114	+	continue;
1115	+	if ("checkForWedgedTest".equals(name))
1116	+	continue;
1117	+	System.err.print(info);
1118	+	}
1119	+	System.err.println("------ stacktrace dump end ------");
1120	+
1121	+	if (sm != null) System.setSecurityManager(sm);
1122	+	}
1123	+
1124	+	/**
1125	+	* Checks that thread eventually enters the expected blocked thread state.
1126	+	*/
1127	+	void assertThreadBlocks(Thread thread, Thread.State expected) {
1128	+	// always sleep at least 1 ms, with high probability avoiding
1129	+	// transitory states
1130	+	for (long retries = LONG_DELAY_MS * 3 / 4; retries-->0; ) {
1131	+	try { delay(1); }
1132	+	catch (InterruptedException fail) {
1133	+	throw new AssertionError("Unexpected InterruptedException", fail);
1134	+	}
1135	+	Thread.State s = thread.getState();
1136	+	if (s == expected)
1137	+	return;
1138	+	else if (s == Thread.State.TERMINATED)
1139	+	fail("Unexpected thread termination");
1140	+	}
1141	+	fail("timed out waiting for thread to enter thread state " + expected);
1142	+	}
1143
1144		/**
1145	<	* fail with message "should throw exception"
1145	>	* Checks that future.get times out, with the default timeout of
1146	>	* {@code timeoutMillis()}.
1147		*/
1148	<	public void shouldThrow() {
1149	<	fail("Should throw exception");
1148	>	void assertFutureTimesOut(Future future) {
1149	>	assertFutureTimesOut(future, timeoutMillis());
1150		}
1151
1152		/**
1153	<	* fail with message "should throw " + exceptionName
1153	>	* Checks that future.get times out, with the given millisecond timeout.
1154		*/
1155	<	public void shouldThrow(String exceptionName) {
1156	<	fail("Should throw " + exceptionName);
1155	>	void assertFutureTimesOut(Future future, long timeoutMillis) {
1156	>	long startTime = System.nanoTime();
1157	>	try {
1158	>	future.get(timeoutMillis, MILLISECONDS);
1159	>	shouldThrow();
1160	>	} catch (TimeoutException success) {
1161	>	} catch (Exception fail) {
1162	>	threadUnexpectedException(fail);
1163	>	} finally { future.cancel(true); }
1164	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
1165		}
1166
1167		/**
1168	<	* fail with message "Unexpected exception"
1168	>	* Fails with message "should throw exception".
1169		*/
1170	<	public void unexpectedException() {
1171	<	fail("Unexpected exception");
1170	>	public void shouldThrow() {
1171	>	fail("Should throw exception");
1172		}
1173
1174		/**
1175	<	* fail with message "Unexpected exception", with argument
1175	>	* Fails with message "should throw " + exceptionName.
1176		*/
1177	<	public void unexpectedException(Throwable ex) {
1178	<	ex.printStackTrace();
382	<	fail("Unexpected exception: " + ex);
1177	>	public void shouldThrow(String exceptionName) {
1178	>	fail("Should throw " + exceptionName);
1179		}
1180
1181	+	/**
1182	+	* The maximum number of consecutive spurious wakeups we should
1183	+	* tolerate (from APIs like LockSupport.park) before failing a test.
1184	+	*/
1185	+	static final int MAX_SPURIOUS_WAKEUPS = 10;
1186
1187		/**
1188		* The number of elements to place in collections, arrays, etc.
#	Line 408 | Line 1209 | public class JSR166TestCase extends Test
1209		public static final Integer m6  = new Integer(-6);
1210		public static final Integer m10 = new Integer(-10);
1211
411	–
1212		/**
1213		* Runs Runnable r with a security policy that permits precisely
1214		* the specified permissions.  If there is no current security
#	Line 420 | Line 1220 | public class JSR166TestCase extends Test
1220		SecurityManager sm = System.getSecurityManager();
1221		if (sm == null) {
1222		r.run();
1223	+	}
1224	+	runWithSecurityManagerWithPermissions(r, permissions);
1225	+	}
1226	+
1227	+	/**
1228	+	* Runs Runnable r with a security policy that permits precisely
1229	+	* the specified permissions.  If there is no current security
1230	+	* manager, a temporary one is set for the duration of the
1231	+	* Runnable.  We require that any security manager permit
1232	+	* getPolicy/setPolicy.
1233	+	*/
1234	+	public void runWithSecurityManagerWithPermissions(Runnable r,
1235	+	Permission... permissions) {
1236	+	SecurityManager sm = System.getSecurityManager();
1237	+	if (sm == null) {
1238		Policy savedPolicy = Policy.getPolicy();
1239		try {
1240		Policy.setPolicy(permissivePolicy());
1241		System.setSecurityManager(new SecurityManager());
1242	<	runWithPermissions(r, permissions);
1242	>	runWithSecurityManagerWithPermissions(r, permissions);
1243		} finally {
1244		System.setSecurityManager(null);
1245		Policy.setPolicy(savedPolicy);
#	Line 472 | Line 1287 | public class JSR166TestCase extends Test
1287		return perms.implies(p);
1288		}
1289		public void refresh() {}
1290	+	public String toString() {
1291	+	List<Permission> ps = new ArrayList<>();
1292	+	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1293	+	ps.add(e.nextElement());
1294	+	return "AdjustablePolicy with permissions " + ps;
1295	+	}
1296		}
1297
1298		/**
#	Line 494 | Line 1315 | public class JSR166TestCase extends Test
1315		}
1316
1317		/**
1318	<	* Sleep until the timeout has elapsed, or interrupted.
1319	<	* Does <em>NOT</em> throw InterruptedException.
1318	>	* Sleeps until the given time has elapsed.
1319	>	* Throws AssertionError if interrupted.
1320	>	*/
1321	>	static void sleep(long millis) {
1322	>	try {
1323	>	delay(millis);
1324	>	} catch (InterruptedException fail) {
1325	>	throw new AssertionError("Unexpected InterruptedException", fail);
1326	>	}
1327	>	}
1328	>
1329	>	/**
1330	>	* Spin-waits up to the specified number of milliseconds for the given
1331	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1332	>	* @param waitingForGodot if non-null, an additional condition to satisfy
1333		*/
1334	<	void sleepTillInterrupted(long timeoutMillis) {
1334	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis,
1335	>	Callable<Boolean> waitingForGodot) {
1336	>	for (long startTime = 0L;;) {
1337	>	switch (thread.getState()) {
1338	>	default: break;
1339	>	case BLOCKED: case WAITING: case TIMED_WAITING:
1340	>	try {
1341	>	if (waitingForGodot == null || waitingForGodot.call())
1342	>	return;
1343	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1344	>	break;
1345	>	case TERMINATED:
1346	>	fail("Unexpected thread termination");
1347	>	}
1348	>
1349	>	if (startTime == 0L)
1350	>	startTime = System.nanoTime();
1351	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1352	>	assertTrue(thread.isAlive());
1353	>	if (waitingForGodot == null
1354	>	|| thread.getState() == Thread.State.RUNNABLE)
1355	>	fail("timed out waiting for thread to enter wait state");
1356	>	else
1357	>	fail("timed out waiting for condition, thread state="
1358	>	+ thread.getState());
1359	>	}
1360	>	Thread.yield();
1361	>	}
1362	>	}
1363	>
1364	>	/**
1365	>	* Spin-waits up to the specified number of milliseconds for the given
1366	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1367	>	*/
1368	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1369	>	waitForThreadToEnterWaitState(thread, timeoutMillis, null);
1370	>	}
1371	>
1372	>	/**
1373	>	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1374	>	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1375	>	*/
1376	>	void waitForThreadToEnterWaitState(Thread thread) {
1377	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS, null);
1378	>	}
1379	>
1380	>	/**
1381	>	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1382	>	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING,
1383	>	* and additionally satisfy the given condition.
1384	>	*/
1385	>	void waitForThreadToEnterWaitState(Thread thread,
1386	>	Callable<Boolean> waitingForGodot) {
1387	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS, waitingForGodot);
1388	>	}
1389	>
1390	>	/**
1391	>	* Spin-waits up to LONG_DELAY_MS milliseconds for the current thread to
1392	>	* be interrupted.  Clears the interrupt status before returning.
1393	>	*/
1394	>	void awaitInterrupted() {
1395	>	for (long startTime = 0L; !Thread.interrupted(); ) {
1396	>	if (startTime == 0L)
1397	>	startTime = System.nanoTime();
1398	>	else if (millisElapsedSince(startTime) > LONG_DELAY_MS)
1399	>	fail("timed out waiting for thread interrupt");
1400	>	Thread.yield();
1401	>	}
1402	>	}
1403	>
1404	>	/**
1405	>	* Returns the number of milliseconds since time given by
1406	>	* startNanoTime, which must have been previously returned from a
1407	>	* call to {@link System#nanoTime()}.
1408	>	*/
1409	>	static long millisElapsedSince(long startNanoTime) {
1410	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1411	>	}
1412	>
1413	>	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1414	>	//         long startTime = System.nanoTime();
1415	>	//         try {
1416	>	//             r.run();
1417	>	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1418	>	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1419	>	//             throw new AssertionError("did not return promptly");
1420	>	//     }
1421	>
1422	>	//     void assertTerminatesPromptly(Runnable r) {
1423	>	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1424	>	//     }
1425	>
1426	>	/**
1427	>	* Checks that timed f.get() returns the expected value, and does not
1428	>	* wait for the timeout to elapse before returning.
1429	>	*/
1430	>	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1431	>	long startTime = System.nanoTime();
1432	>	T actual = null;
1433		try {
1434	<	Thread.sleep(timeoutMillis);
1435	<	} catch (InterruptedException wakeup) {}
1434	>	actual = f.get(timeoutMillis, MILLISECONDS);
1435	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1436	>	assertEquals(expectedValue, actual);
1437	>	if (millisElapsedSince(startTime) > timeoutMillis/2)
1438	>	throw new AssertionError("timed get did not return promptly");
1439	>	}
1440	>
1441	>	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1442	>	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1443		}
1444
1445		/**
1446	<	* Returns a new started Thread running the given runnable.
1446	>	* Returns a new started daemon Thread running the given runnable.
1447		*/
1448		Thread newStartedThread(Runnable runnable) {
1449		Thread t = new Thread(runnable);
1450	+	t.setDaemon(true);
1451		t.start();
1452		return t;
1453		}
1454
1455	<	// Some convenient Runnable classes
1456	<
1457	<	public abstract class CheckedRunnable implements Runnable {
1458	<	protected abstract void realRun() throws Throwable;
1459	<
1460	<	public final void run() {
1455	>	/**
1456	>	* Waits for the specified time (in milliseconds) for the thread
1457	>	* to terminate (using {@link Thread#join(long)}), else interrupts
1458	>	* the thread (in the hope that it may terminate later) and fails.
1459	>	*/
1460	>	void awaitTermination(Thread thread, long timeoutMillis) {
1461	>	try {
1462	>	thread.join(timeoutMillis);
1463	>	} catch (InterruptedException fail) {
1464	>	threadUnexpectedException(fail);
1465	>	}
1466	>	if (thread.getState() != Thread.State.TERMINATED) {
1467	>	String detail = String.format(
1468	>	"timed out waiting for thread to terminate, thread=%s, state=%s" ,
1469	>	thread, thread.getState());
1470		try {
1471	<	realRun();
1472	<	} catch (Throwable t) {
1473	<	threadUnexpectedException(t);
1471	>	threadFail(detail);
1472	>	} finally {
1473	>	// Interrupt thread __after__ having reported its stack trace
1474	>	thread.interrupt();
1475		}
1476		}
1477		}
1478
1479	<	public abstract class RunnableShouldThrow implements Runnable {
1480	<	protected abstract void realRun() throws Throwable;
1479	>	/**
1480	>	* Waits for LONG_DELAY_MS milliseconds for the thread to
1481	>	* terminate (using {@link Thread#join(long)}), else interrupts
1482	>	* the thread (in the hope that it may terminate later) and fails.
1483	>	*/
1484	>	void awaitTermination(Thread t) {
1485	>	awaitTermination(t, LONG_DELAY_MS);
1486	>	}
1487
1488	<	final Class<?> exceptionClass;
1488	>	// Some convenient Runnable classes
1489
1490	<	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
1491	<	this.exceptionClass = exceptionClass;
536	<	}
1490	>	public abstract class CheckedRunnable implements Runnable {
1491	>	protected abstract void realRun() throws Throwable;
1492
1493		public final void run() {
1494		try {
1495		realRun();
1496	<	threadShouldThrow(exceptionClass.getSimpleName());
1497	<	} catch (Throwable t) {
543	<	if (! exceptionClass.isInstance(t))
544	<	threadUnexpectedException(t);
1496	>	} catch (Throwable fail) {
1497	>	threadUnexpectedException(fail);
1498		}
1499		}
1500		}
#	Line 558 | Line 1511 | public class JSR166TestCase extends Test
1511		public final void run() {
1512		try {
1513		realRun();
561	–	threadShouldThrow(exceptionClass.getSimpleName());
1514		} catch (Throwable t) {
1515		if (! exceptionClass.isInstance(t))
1516		threadUnexpectedException(t);
1517	+	return;
1518		}
1519	+	threadShouldThrow(exceptionClass.getSimpleName());
1520		}
1521		}
1522
#	Line 572 | Line 1526 | public class JSR166TestCase extends Test
1526		public final void run() {
1527		try {
1528		realRun();
575	–	threadShouldThrow("InterruptedException");
1529		} catch (InterruptedException success) {
1530	<	} catch (Throwable t) {
1531	<	threadUnexpectedException(t);
1530	>	threadAssertFalse(Thread.interrupted());
1531	>	return;
1532	>	} catch (Throwable fail) {
1533	>	threadUnexpectedException(fail);
1534		}
1535	+	threadShouldThrow("InterruptedException");
1536		}
1537		}
1538
#	Line 586 | Line 1542 | public class JSR166TestCase extends Test
1542		public final T call() {
1543		try {
1544		return realCall();
1545	<	} catch (Throwable t) {
1546	<	threadUnexpectedException(t);
1545	>	} catch (Throwable fail) {
1546	>	threadUnexpectedException(fail);
1547		}
1548	<	return null;
593	<	}
594	<	}
595	<
596	<	public abstract class CheckedInterruptedCallable<T> implements Callable<T> {
597	<	protected abstract T realCall() throws Throwable;
598	<
599	<	public final T call() {
600	<	try {
601	<	T result = realCall();
602	<	threadShouldThrow("InterruptedException");
603	<	return result;
604	<	} catch (InterruptedException success) {
605	<	} catch (Throwable t) {
606	<	threadUnexpectedException(t);
607	<	}
608	<	return null;
1548	>	throw new AssertionError("unreached");
1549		}
1550		}
1551
#	Line 620 | Line 1560 | public class JSR166TestCase extends Test
1560		public static final String TEST_STRING = "a test string";
1561
1562		public static class StringTask implements Callable<String> {
1563	<	public String call() { return TEST_STRING; }
1563	>	final String value;
1564	>	public StringTask() { this(TEST_STRING); }
1565	>	public StringTask(String value) { this.value = value; }
1566	>	public String call() { return value; }
1567		}
1568
1569		public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1570		return new CheckedCallable<String>() {
1571	<	public String realCall() {
1571	>	protected String realCall() {
1572		try {
1573		latch.await();
1574		} catch (InterruptedException quittingTime) {}
#	Line 633 | Line 1576 | public class JSR166TestCase extends Test
1576		}};
1577		}
1578
1579	<	public static class NPETask implements Callable<String> {
1580	<	public String call() { throw new NullPointerException(); }
1579	>	public Runnable countDowner(final CountDownLatch latch) {
1580	>	return new CheckedRunnable() {
1581	>	public void realRun() throws InterruptedException {
1582	>	latch.countDown();
1583	>	}};
1584		}
1585
1586	<	public static class CallableOne implements Callable<Integer> {
1587	<	public Integer call() { return one; }
1586	>	class LatchAwaiter extends CheckedRunnable {
1587	>	static final int NEW = 0;
1588	>	static final int RUNNING = 1;
1589	>	static final int DONE = 2;
1590	>	final CountDownLatch latch;
1591	>	int state = NEW;
1592	>	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1593	>	public void realRun() throws InterruptedException {
1594	>	state = 1;
1595	>	await(latch);
1596	>	state = 2;
1597	>	}
1598		}
1599
1600	<	public class ShortRunnable extends CheckedRunnable {
1601	<	protected void realRun() throws Throwable {
646	<	Thread.sleep(SHORT_DELAY_MS);
647	<	}
1600	>	public LatchAwaiter awaiter(CountDownLatch latch) {
1601	>	return new LatchAwaiter(latch);
1602		}
1603
1604	<	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1605	<	protected void realRun() throws InterruptedException {
1606	<	Thread.sleep(SHORT_DELAY_MS);
1604	>	public void await(CountDownLatch latch, long timeoutMillis) {
1605	>	boolean timedOut = false;
1606	>	try {
1607	>	timedOut = !latch.await(timeoutMillis, MILLISECONDS);
1608	>	} catch (Throwable fail) {
1609	>	threadUnexpectedException(fail);
1610		}
1611	+	if (timedOut)
1612	+	fail("timed out waiting for CountDownLatch for "
1613	+	+ (timeoutMillis/1000) + " sec");
1614		}
1615
1616	<	public class SmallRunnable extends CheckedRunnable {
1617	<	protected void realRun() throws Throwable {
658	<	Thread.sleep(SMALL_DELAY_MS);
659	<	}
1616	>	public void await(CountDownLatch latch) {
1617	>	await(latch, LONG_DELAY_MS);
1618		}
1619
1620	<	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1621	<	protected void realRun() {
1622	<	try {
1623	<	Thread.sleep(SMALL_DELAY_MS);
1624	<	} catch (InterruptedException ok) {}
1620	>	public void await(Semaphore semaphore) {
1621	>	boolean timedOut = false;
1622	>	try {
1623	>	timedOut = !semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS);
1624	>	} catch (Throwable fail) {
1625	>	threadUnexpectedException(fail);
1626		}
1627	+	if (timedOut)
1628	+	fail("timed out waiting for Semaphore for "
1629	+	+ (LONG_DELAY_MS/1000) + " sec");
1630		}
1631
1632	<	public class SmallCallable extends CheckedCallable {
1633	<	protected Object realCall() throws InterruptedException {
1634	<	Thread.sleep(SMALL_DELAY_MS);
1635	<	return Boolean.TRUE;
1632	>	public void await(CyclicBarrier barrier) {
1633	>	try {
1634	>	barrier.await(LONG_DELAY_MS, MILLISECONDS);
1635	>	} catch (Throwable fail) {
1636	>	threadUnexpectedException(fail);
1637		}
1638		}
1639
1640	<	public class SmallInterruptedRunnable extends CheckedInterruptedRunnable {
1641	<	protected void realRun() throws InterruptedException {
1642	<	Thread.sleep(SMALL_DELAY_MS);
1643	<	}
1640	>	//     /**
1641	>	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1642	>	//      */
1643	>	//     public void await(AtomicBoolean flag) {
1644	>	//         await(flag, LONG_DELAY_MS);
1645	>	//     }
1646	>
1647	>	//     /**
1648	>	//      * Spin-waits up to the specified timeout until flag becomes true.
1649	>	//      */
1650	>	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1651	>	//         long startTime = System.nanoTime();
1652	>	//         while (!flag.get()) {
1653	>	//             if (millisElapsedSince(startTime) > timeoutMillis)
1654	>	//                 throw new AssertionError("timed out");
1655	>	//             Thread.yield();
1656	>	//         }
1657	>	//     }
1658	>
1659	>	public static class NPETask implements Callable<String> {
1660	>	public String call() { throw new NullPointerException(); }
1661		}
1662
1663	<	public class MediumRunnable extends CheckedRunnable {
1664	<	protected void realRun() throws Throwable {
1665	<	Thread.sleep(MEDIUM_DELAY_MS);
1663	>	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1664	>	return new CheckedRunnable() {
1665	>	protected void realRun() {
1666	>	try {
1667	>	delay(timeoutMillis);
1668	>	} catch (InterruptedException ok) {}
1669	>	}};
1670	>	}
1671	>
1672	>	/**
1673	>	* For use as ThreadFactory in constructors
1674	>	*/
1675	>	public static class SimpleThreadFactory implements ThreadFactory {
1676	>	public Thread newThread(Runnable r) {
1677	>	return new Thread(r);
1678		}
1679		}
1680
1681	<	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1682	<	protected void realRun() throws InterruptedException {
1683	<	Thread.sleep(MEDIUM_DELAY_MS);
1681	>	public interface TrackedRunnable extends Runnable {
1682	>	boolean isDone();
1683	>	}
1684	>
1685	>	public static class TrackedNoOpRunnable implements Runnable {
1686	>	public volatile boolean done = false;
1687	>	public void run() {
1688	>	done = true;
1689		}
1690		}
1691
1692	<	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1693	<	protected void realRun() {
1692	>	/**
1693	>	* Analog of CheckedRunnable for RecursiveAction
1694	>	*/
1695	>	public abstract class CheckedRecursiveAction extends RecursiveAction {
1696	>	protected abstract void realCompute() throws Throwable;
1697	>
1698	>	@Override protected final void compute() {
1699		try {
1700	<	Thread.sleep(MEDIUM_DELAY_MS);
1701	<	} catch (InterruptedException ok) {}
1700	>	realCompute();
1701	>	} catch (Throwable fail) {
1702	>	threadUnexpectedException(fail);
1703	>	}
1704		}
1705		}
1706
1707	<	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1708	<	protected void realRun() {
1707	>	/**
1708	>	* Analog of CheckedCallable for RecursiveTask
1709	>	*/
1710	>	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1711	>	protected abstract T realCompute() throws Throwable;
1712	>
1713	>	@Override protected final T compute() {
1714		try {
1715	<	Thread.sleep(LONG_DELAY_MS);
1716	<	} catch (InterruptedException ok) {}
1715	>	return realCompute();
1716	>	} catch (Throwable fail) {
1717	>	threadUnexpectedException(fail);
1718	>	}
1719	>	throw new AssertionError("unreached");
1720		}
1721		}
1722
1723		/**
1724	<	* For use as ThreadFactory in constructors
1724	>	* For use as RejectedExecutionHandler in constructors
1725		*/
1726	<	public static class SimpleThreadFactory implements ThreadFactory {
1727	<	public Thread newThread(Runnable r) {
1728	<	return new Thread(r);
717	<	}
1726	>	public static class NoOpREHandler implements RejectedExecutionHandler {
1727	>	public void rejectedExecution(Runnable r,
1728	>	ThreadPoolExecutor executor) {}
1729		}
1730
1731	<	public static class TrackedShortRunnable implements Runnable {
1732	<	public volatile boolean done = false;
1733	<	public void run() {
1731	>	/**
1732	>	* A CyclicBarrier that uses timed await and fails with
1733	>	* AssertionErrors instead of throwing checked exceptions.
1734	>	*/
1735	>	public static class CheckedBarrier extends CyclicBarrier {
1736	>	public CheckedBarrier(int parties) { super(parties); }
1737	>
1738	>	public int await() {
1739		try {
1740	<	Thread.sleep(SMALL_DELAY_MS);
1741	<	done = true;
1742	<	} catch (InterruptedException ok) {}
1740	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1741	>	} catch (TimeoutException timedOut) {
1742	>	throw new AssertionError("timed out");
1743	>	} catch (Exception fail) {
1744	>	throw new AssertionError("Unexpected exception: " + fail, fail);
1745	>	}
1746		}
1747		}
1748
1749	<	public static class TrackedMediumRunnable implements Runnable {
1750	<	public volatile boolean done = false;
1751	<	public void run() {
1749	>	void checkEmpty(BlockingQueue q) {
1750	>	try {
1751	>	assertTrue(q.isEmpty());
1752	>	assertEquals(0, q.size());
1753	>	assertNull(q.peek());
1754	>	assertNull(q.poll());
1755	>	assertNull(q.poll(randomExpiredTimeout(), randomTimeUnit()));
1756	>	assertEquals(q.toString(), "[]");
1757	>	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1758	>	assertFalse(q.iterator().hasNext());
1759		try {
1760	<	Thread.sleep(MEDIUM_DELAY_MS);
1761	<	done = true;
1762	<	} catch (InterruptedException ok) {}
1763	<	}
1760	>	q.element();
1761	>	shouldThrow();
1762	>	} catch (NoSuchElementException success) {}
1763	>	try {
1764	>	q.iterator().next();
1765	>	shouldThrow();
1766	>	} catch (NoSuchElementException success) {}
1767	>	try {
1768	>	q.remove();
1769	>	shouldThrow();
1770	>	} catch (NoSuchElementException success) {}
1771	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1772		}
1773
1774	<	public static class TrackedLongRunnable implements Runnable {
1775	<	public volatile boolean done = false;
1776	<	public void run() {
1777	<	try {
1778	<	Thread.sleep(LONG_DELAY_MS);
1779	<	done = true;
1780	<	} catch (InterruptedException ok) {}
1774	>	void assertSerialEquals(Object x, Object y) {
1775	>	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1776	>	}
1777	>
1778	>	void assertNotSerialEquals(Object x, Object y) {
1779	>	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1780	>	}
1781	>
1782	>	byte[] serialBytes(Object o) {
1783	>	try {
1784	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1785	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1786	>	oos.writeObject(o);
1787	>	oos.flush();
1788	>	oos.close();
1789	>	return bos.toByteArray();
1790	>	} catch (Throwable fail) {
1791	>	threadUnexpectedException(fail);
1792	>	return new byte[0];
1793		}
1794		}
1795
1796	<	public static class TrackedNoOpRunnable implements Runnable {
1797	<	public volatile boolean done = false;
1798	<	public void run() {
1799	<	done = true;
1796	>	void assertImmutable(Object o) {
1797	>	if (o instanceof Collection) {
1798	>	assertThrows(
1799	>	UnsupportedOperationException.class,
1800	>	() -> ((Collection) o).add(null));
1801		}
1802		}
1803
1804	<	public static class TrackedCallable implements Callable {
1805	<	public volatile boolean done = false;
1806	<	public Object call() {
1807	<	try {
1808	<	Thread.sleep(SMALL_DELAY_MS);
1809	<	done = true;
1810	<	} catch (InterruptedException ok) {}
1811	<	return Boolean.TRUE;
1804	>	@SuppressWarnings("unchecked")
1805	>	<T> T serialClone(T o) {
1806	>	T clone = null;
1807	>	try {
1808	>	ObjectInputStream ois = new ObjectInputStream
1809	>	(new ByteArrayInputStream(serialBytes(o)));
1810	>	clone = (T) ois.readObject();
1811	>	} catch (Throwable fail) {
1812	>	threadUnexpectedException(fail);
1813	>	}
1814	>	if (o == clone) assertImmutable(o);
1815	>	else assertSame(o.getClass(), clone.getClass());
1816	>	return clone;
1817	>	}
1818	>
1819	>	/**
1820	>	* A version of serialClone that leaves error handling (for
1821	>	* e.g. NotSerializableException) up to the caller.
1822	>	*/
1823	>	@SuppressWarnings("unchecked")
1824	>	<T> T serialClonePossiblyFailing(T o)
1825	>	throws ReflectiveOperationException, java.io.IOException {
1826	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1827	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1828	>	oos.writeObject(o);
1829	>	oos.flush();
1830	>	oos.close();
1831	>	ObjectInputStream ois = new ObjectInputStream
1832	>	(new ByteArrayInputStream(bos.toByteArray()));
1833	>	T clone = (T) ois.readObject();
1834	>	if (o == clone) assertImmutable(o);
1835	>	else assertSame(o.getClass(), clone.getClass());
1836	>	return clone;
1837	>	}
1838	>
1839	>	/**
1840	>	* If o implements Cloneable and has a public clone method,
1841	>	* returns a clone of o, else null.
1842	>	*/
1843	>	@SuppressWarnings("unchecked")
1844	>	<T> T cloneableClone(T o) {
1845	>	if (!(o instanceof Cloneable)) return null;
1846	>	final T clone;
1847	>	try {
1848	>	clone = (T) o.getClass().getMethod("clone").invoke(o);
1849	>	} catch (NoSuchMethodException ok) {
1850	>	return null;
1851	>	} catch (ReflectiveOperationException unexpected) {
1852	>	throw new Error(unexpected);
1853	>	}
1854	>	assertNotSame(o, clone); // not 100% guaranteed by spec
1855	>	assertSame(o.getClass(), clone.getClass());
1856	>	return clone;
1857	>	}
1858	>
1859	>	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1860	>	Action... throwingActions) {
1861	>	for (Action throwingAction : throwingActions) {
1862	>	boolean threw = false;
1863	>	try { throwingAction.run(); }
1864	>	catch (Throwable t) {
1865	>	threw = true;
1866	>	if (!expectedExceptionClass.isInstance(t))
1867	>	throw new AssertionError(
1868	>	"Expected " + expectedExceptionClass.getName() +
1869	>	", got " + t.getClass().getName(),
1870	>	t);
1871	>	}
1872	>	if (!threw)
1873	>	shouldThrow(expectedExceptionClass.getName());
1874		}
1875		}
1876
1877	+	public void assertIteratorExhausted(Iterator<?> it) {
1878	+	try {
1879	+	it.next();
1880	+	shouldThrow();
1881	+	} catch (NoSuchElementException success) {}
1882	+	assertFalse(it.hasNext());
1883	+	}
1884	+
1885	+	public <T> Callable<T> callableThrowing(final Exception ex) {
1886	+	return new Callable<T>() { public T call() throws Exception { throw ex; }};
1887	+	}
1888	+
1889	+	public Runnable runnableThrowing(final RuntimeException ex) {
1890	+	return new Runnable() { public void run() { throw ex; }};
1891	+	}
1892	+
1893	+	/** A reusable thread pool to be shared by tests. */
1894	+	static final ExecutorService cachedThreadPool =
1895	+	new ThreadPoolExecutor(0, Integer.MAX_VALUE,
1896	+	1000L, MILLISECONDS,
1897	+	new SynchronousQueue<Runnable>());
1898	+
1899	+	static <T> void shuffle(T[] array) {
1900	+	Collections.shuffle(Arrays.asList(array), ThreadLocalRandom.current());
1901	+	}
1902
1903		/**
1904	<	* For use as RejectedExecutionHandler in constructors
1904	>	* Returns the same String as would be returned by {@link
1905	>	* Object#toString}, whether or not the given object's class
1906	>	* overrides toString().
1907	>	*
1908	>	* @see System#identityHashCode
1909		*/
1910	<	public static class NoOpREHandler implements RejectedExecutionHandler {
1911	<	public void rejectedExecution(Runnable r,
1912	<	ThreadPoolExecutor executor) {}
1910	>	static String identityString(Object x) {
1911	>	return x.getClass().getName()
1912	>	+ "@" + Integer.toHexString(System.identityHashCode(x));
1913	>	}
1914	>
1915	>	// --- Shared assertions for Executor tests ---
1916	>
1917	>	/**
1918	>	* Returns maximum number of tasks that can be submitted to given
1919	>	* pool (with bounded queue) before saturation (when submission
1920	>	* throws RejectedExecutionException).
1921	>	*/
1922	>	static final int saturatedSize(ThreadPoolExecutor pool) {
1923	>	BlockingQueue<Runnable> q = pool.getQueue();
1924	>	return pool.getMaximumPoolSize() + q.size() + q.remainingCapacity();
1925		}
1926
1927	+	@SuppressWarnings("FutureReturnValueIgnored")
1928	+	void assertNullTaskSubmissionThrowsNullPointerException(Executor e) {
1929	+	try {
1930	+	e.execute((Runnable) null);
1931	+	shouldThrow();
1932	+	} catch (NullPointerException success) {}
1933	+
1934	+	if (! (e instanceof ExecutorService)) return;
1935	+	ExecutorService es = (ExecutorService) e;
1936	+	try {
1937	+	es.submit((Runnable) null);
1938	+	shouldThrow();
1939	+	} catch (NullPointerException success) {}
1940	+	try {
1941	+	es.submit((Runnable) null, Boolean.TRUE);
1942	+	shouldThrow();
1943	+	} catch (NullPointerException success) {}
1944	+	try {
1945	+	es.submit((Callable) null);
1946	+	shouldThrow();
1947	+	} catch (NullPointerException success) {}
1948	+
1949	+	if (! (e instanceof ScheduledExecutorService)) return;
1950	+	ScheduledExecutorService ses = (ScheduledExecutorService) e;
1951	+	try {
1952	+	ses.schedule((Runnable) null,
1953	+	randomTimeout(), randomTimeUnit());
1954	+	shouldThrow();
1955	+	} catch (NullPointerException success) {}
1956	+	try {
1957	+	ses.schedule((Callable) null,
1958	+	randomTimeout(), randomTimeUnit());
1959	+	shouldThrow();
1960	+	} catch (NullPointerException success) {}
1961	+	try {
1962	+	ses.scheduleAtFixedRate((Runnable) null,
1963	+	randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
1964	+	shouldThrow();
1965	+	} catch (NullPointerException success) {}
1966	+	try {
1967	+	ses.scheduleWithFixedDelay((Runnable) null,
1968	+	randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
1969	+	shouldThrow();
1970	+	} catch (NullPointerException success) {}
1971	+	}
1972	+
1973	+	void setRejectedExecutionHandler(
1974	+	ThreadPoolExecutor p, RejectedExecutionHandler handler) {
1975	+	p.setRejectedExecutionHandler(handler);
1976	+	assertSame(handler, p.getRejectedExecutionHandler());
1977	+	}
1978	+
1979	+	void assertTaskSubmissionsAreRejected(ThreadPoolExecutor p) {
1980	+	final RejectedExecutionHandler savedHandler = p.getRejectedExecutionHandler();
1981	+	final long savedTaskCount = p.getTaskCount();
1982	+	final long savedCompletedTaskCount = p.getCompletedTaskCount();
1983	+	final int savedQueueSize = p.getQueue().size();
1984	+	final boolean stock = (p.getClass().getClassLoader() == null);
1985	+
1986	+	Runnable r = () -> {};
1987	+	Callable<Boolean> c = () -> Boolean.TRUE;
1988	+
1989	+	class Recorder implements RejectedExecutionHandler {
1990	+	public volatile Runnable r = null;
1991	+	public volatile ThreadPoolExecutor p = null;
1992	+	public void reset() { r = null; p = null; }
1993	+	public void rejectedExecution(Runnable r, ThreadPoolExecutor p) {
1994	+	assertNull(this.r);
1995	+	assertNull(this.p);
1996	+	this.r = r;
1997	+	this.p = p;
1998	+	}
1999	+	}
2000	+
2001	+	// check custom handler is invoked exactly once per task
2002	+	Recorder recorder = new Recorder();
2003	+	setRejectedExecutionHandler(p, recorder);
2004	+	for (int i = 2; i--> 0; ) {
2005	+	recorder.reset();
2006	+	p.execute(r);
2007	+	if (stock && p.getClass() == ThreadPoolExecutor.class)
2008	+	assertSame(r, recorder.r);
2009	+	assertSame(p, recorder.p);
2010	+
2011	+	recorder.reset();
2012	+	assertFalse(p.submit(r).isDone());
2013	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2014	+	assertSame(p, recorder.p);
2015	+
2016	+	recorder.reset();
2017	+	assertFalse(p.submit(r, Boolean.TRUE).isDone());
2018	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2019	+	assertSame(p, recorder.p);
2020	+
2021	+	recorder.reset();
2022	+	assertFalse(p.submit(c).isDone());
2023	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2024	+	assertSame(p, recorder.p);
2025	+
2026	+	if (p instanceof ScheduledExecutorService) {
2027	+	ScheduledExecutorService s = (ScheduledExecutorService) p;
2028	+	ScheduledFuture<?> future;
2029	+
2030	+	recorder.reset();
2031	+	future = s.schedule(r, randomTimeout(), randomTimeUnit());
2032	+	assertFalse(future.isDone());
2033	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2034	+	assertSame(p, recorder.p);
2035	+
2036	+	recorder.reset();
2037	+	future = s.schedule(c, randomTimeout(), randomTimeUnit());
2038	+	assertFalse(future.isDone());
2039	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2040	+	assertSame(p, recorder.p);
2041	+
2042	+	recorder.reset();
2043	+	future = s.scheduleAtFixedRate(r, randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2044	+	assertFalse(future.isDone());
2045	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2046	+	assertSame(p, recorder.p);
2047	+
2048	+	recorder.reset();
2049	+	future = s.scheduleWithFixedDelay(r, randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2050	+	assertFalse(future.isDone());
2051	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2052	+	assertSame(p, recorder.p);
2053	+	}
2054	+	}
2055	+
2056	+	// Checking our custom handler above should be sufficient, but
2057	+	// we add some integration tests of standard handlers.
2058	+	final AtomicReference<Thread> thread = new AtomicReference<>();
2059	+	final Runnable setThread = () -> thread.set(Thread.currentThread());
2060	+
2061	+	setRejectedExecutionHandler(p, new ThreadPoolExecutor.AbortPolicy());
2062	+	try {
2063	+	p.execute(setThread);
2064	+	shouldThrow();
2065	+	} catch (RejectedExecutionException success) {}
2066	+	assertNull(thread.get());
2067	+
2068	+	setRejectedExecutionHandler(p, new ThreadPoolExecutor.DiscardPolicy());
2069	+	p.execute(setThread);
2070	+	assertNull(thread.get());
2071	+
2072	+	setRejectedExecutionHandler(p, new ThreadPoolExecutor.CallerRunsPolicy());
2073	+	p.execute(setThread);
2074	+	if (p.isShutdown())
2075	+	assertNull(thread.get());
2076	+	else
2077	+	assertSame(Thread.currentThread(), thread.get());
2078	+
2079	+	setRejectedExecutionHandler(p, savedHandler);
2080	+
2081	+	// check that pool was not perturbed by handlers
2082	+	assertEquals(savedTaskCount, p.getTaskCount());
2083	+	assertEquals(savedCompletedTaskCount, p.getCompletedTaskCount());
2084	+	assertEquals(savedQueueSize, p.getQueue().size());
2085	+	}
2086	+
2087	+	void assertCollectionsEquals(Collection<?> x, Collection<?> y) {
2088	+	assertEquals(x, y);
2089	+	assertEquals(y, x);
2090	+	assertEquals(x.isEmpty(), y.isEmpty());
2091	+	assertEquals(x.size(), y.size());
2092	+	if (x instanceof List) {
2093	+	assertEquals(x.toString(), y.toString());
2094	+	}
2095	+	if (x instanceof List || x instanceof Set) {
2096	+	assertEquals(x.hashCode(), y.hashCode());
2097	+	}
2098	+	if (x instanceof List || x instanceof Deque) {
2099	+	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
2100	+	assertTrue(Arrays.equals(x.toArray(new Object[0]),
2101	+	y.toArray(new Object[0])));
2102	+	}
2103	+	}
2104	+
2105	+	/**
2106	+	* A weaker form of assertCollectionsEquals which does not insist
2107	+	* that the two collections satisfy Object#equals(Object), since
2108	+	* they may use identity semantics as Deques do.
2109	+	*/
2110	+	void assertCollectionsEquivalent(Collection<?> x, Collection<?> y) {
2111	+	if (x instanceof List || x instanceof Set)
2112	+	assertCollectionsEquals(x, y);
2113	+	else {
2114	+	assertEquals(x.isEmpty(), y.isEmpty());
2115	+	assertEquals(x.size(), y.size());
2116	+	assertEquals(new HashSet(x), new HashSet(y));
2117	+	if (x instanceof Deque) {
2118	+	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
2119	+	assertTrue(Arrays.equals(x.toArray(new Object[0]),
2120	+	y.toArray(new Object[0])));
2121	+	}
2122	+	}
2123	+	}
2124		}

Diff Legend

–	Removed lines
+	Added lines
<	Changed lines
>	Changed lines