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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.126 by jsr166, Sat Jan 17 22:55:06 2015 UTC vs.
Revision 1.258 by jsr166, Tue Aug 20 23:06:11 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
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	+	/*
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 static java.util.concurrent.TimeUnit.MINUTES;
45		import static java.util.concurrent.TimeUnit.NANOSECONDS;
46
47		import java.io.ByteArrayInputStream;
#	Line 15 | Line 50 | 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;
#	Line 25 | Line 63 | 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
50	–	import junit.framework.AssertionFailedError;
105		import junit.framework.Test;
106		import junit.framework.TestCase;
107	+	import junit.framework.TestResult;
108		import junit.framework.TestSuite;
109
110		/**
#	Line 62 | Line 117 | import junit.framework.TestSuite;
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 84 | Line 147 | import junit.framework.TestSuite;
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>
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
105	<	* 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 160 | Line 222 | public class JSR166TestCase extends Test
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.
#	Line 171 | Line 280 | public class JSR166TestCase extends Test
280		return (regex == null) ? null : Pattern.compile(regex);
281		}
282
283	<	protected void runTest() throws Throwable {
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	<	for (int i = 0; i < runsPerTest; i++) {
335	<	if (profileTests)
336	<	runTestProfiled();
337	<	else
338	<	super.runTest();
339	<	}
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	<	// Warmup run, notably to trigger all needed classloading.
349	<	super.runTest();
189	<	long t0 = System.nanoTime();
190	<	try {
348	>	for (int i = 0; i < 2; i++) {
349	>	long startTime = System.nanoTime();
350		super.runTest();
351	<	} finally {
352	<	long elapsedMillis = millisElapsedSince(t0);
353	<	if (elapsedMillis >= profileThreshold)
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.
201	–	* Optional command line arg provides the number of iterations to
202	–	* repeat running the tests.
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 = (args.length == 0) ? 1 : Integer.parseInt(args[0]);
407	<
408	<	Test s = suite();
409	<	for (int i = 0; i < iters; ++i) {
214	<	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		}
218	–	System.exit(0);
413		}
414
415		public static TestSuite newTestSuite(Object... suiteOrClasses) {
#	Line 236 | Line 430 | public class JSR166TestCase extends Test
430		for (String testClassName : testClassNames) {
431		try {
432		Class<?> testClass = Class.forName(testClassName);
433	<	Method m = testClass.getDeclaredMethod("suite",
240	<	new Class<?>[0]);
433	>	Method m = testClass.getDeclaredMethod("suite");
434		suite.addTest(newTestSuite((Test)m.invoke(null)));
435	<	} catch (Exception e) {
436	<	throw new Error("Missing test class", e);
435	>	} catch (ReflectiveOperationException e) {
436	>	throw new AssertionError("Missing test class", e);
437		}
438		}
439		}
#	Line 262 | Line 455 | public class JSR166TestCase extends Test
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() {
462	<	// As of 2014-05, java9 still uses 52.0 class file version
463	<	return JAVA_SPECIFICATION_VERSION.startsWith("1.9");
464	<	}
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.
#	Line 289 | Line 487 | public class JSR166TestCase extends Test
487		AbstractQueuedLongSynchronizerTest.suite(),
488		ArrayBlockingQueueTest.suite(),
489		ArrayDequeTest.suite(),
490	+	ArrayListTest.suite(),
491		AtomicBooleanTest.suite(),
492		AtomicIntegerArrayTest.suite(),
493		AtomicIntegerFieldUpdaterTest.suite(),
#	Line 311 | Line 510 | public class JSR166TestCase extends Test
510		CopyOnWriteArrayListTest.suite(),
511		CopyOnWriteArraySetTest.suite(),
512		CountDownLatchTest.suite(),
513	+	CountedCompleterTest.suite(),
514		CyclicBarrierTest.suite(),
515		DelayQueueTest.suite(),
516		EntryTest.suite(),
#	Line 318 | Line 518 | public class JSR166TestCase extends Test
518		ExecutorsTest.suite(),
519		ExecutorCompletionServiceTest.suite(),
520		FutureTaskTest.suite(),
521	+	HashtableTest.suite(),
522		LinkedBlockingDequeTest.suite(),
523		LinkedBlockingQueueTest.suite(),
524		LinkedListTest.suite(),
#	Line 339 | Line 540 | public class JSR166TestCase extends Test
540		TreeMapTest.suite(),
541		TreeSetTest.suite(),
542		TreeSubMapTest.suite(),
543	<	TreeSubSetTest.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	<	"CountedCompleterTest",
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		}
#	Line 364 | Line 573 | public class JSR166TestCase extends Test
573		// Java9+ test classes
574		if (atLeastJava9()) {
575		String[] java9TestClassNames = {
576	<	"ThreadPoolExecutor9Test",
576	>	"AtomicBoolean9Test",
577	>	"AtomicInteger9Test",
578	>	"AtomicIntegerArray9Test",
579	>	"AtomicLong9Test",
580	>	"AtomicLongArray9Test",
581	>	"AtomicReference9Test",
582	>	"AtomicReferenceArray9Test",
583	>	"ExecutorCompletionService9Test",
584	>	"ForkJoinPool9Test",
585		};
586		addNamedTestClasses(suite, java9TestClassNames);
587		}
#	Line 372 | Line 589 | public class JSR166TestCase extends Test
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;
#	Line 379 | Line 657 | public class JSR166TestCase extends Test
657		public static long MEDIUM_DELAY_MS;
658		public static long LONG_DELAY_MS;
659
660	+	private static final long RANDOM_TIMEOUT;
661	+	private static final long RANDOM_EXPIRED_TIMEOUT;
662	+	private static final TimeUnit RANDOM_TIMEUNIT;
663	+	static {
664	+	ThreadLocalRandom rnd = ThreadLocalRandom.current();
665	+	long[] timeouts = { Long.MIN_VALUE, -1, 0, 1, Long.MAX_VALUE };
666	+	RANDOM_TIMEOUT = timeouts[rnd.nextInt(timeouts.length)];
667	+	RANDOM_EXPIRED_TIMEOUT = timeouts[rnd.nextInt(3)];
668	+	TimeUnit[] timeUnits = TimeUnit.values();
669	+	RANDOM_TIMEUNIT = timeUnits[rnd.nextInt(timeUnits.length)];
670	+	}
671	+
672	+	/**
673	+	* Returns a timeout for use when any value at all will do.
674	+	*/
675	+	static long randomTimeout() { return RANDOM_TIMEOUT; }
676	+
677		/**
678	<	* Returns the shortest timed delay. This could
679	<	* be reimplemented to use for example a Property.
678	>	* Returns a timeout that means "no waiting", i.e. not positive.
679	>	*/
680	>	static long randomExpiredTimeout() { return RANDOM_EXPIRED_TIMEOUT; }
681	>
682	>	/**
683	>	* Returns a random non-null TimeUnit.
684	>	*/
685	>	static TimeUnit randomTimeUnit() { return RANDOM_TIMEUNIT; }
686	>
687	>	/**
688	>	* Returns a random boolean; a "coin flip".
689	>	*/
690	>	static boolean randomBoolean() {
691	>	return ThreadLocalRandom.current().nextBoolean();
692	>	}
693	>
694	>	/**
695	>	* Returns a random element from given choices.
696	>	*/
697	>	<T> T chooseRandomly(T... choices) {
698	>	return choices[ThreadLocalRandom.current().nextInt(choices.length)];
699	>	}
700	>
701	>	/**
702	>	* Returns the shortest timed delay. This can be scaled up for
703	>	* slow machines using the jsr166.delay.factor system property,
704	>	* or via jtreg's -timeoutFactor: flag.
705	>	* http://openjdk.java.net/jtreg/command-help.html
706		*/
707		protected long getShortDelay() {
708	<	return 50;
708	>	return (long) (50 * delayFactor);
709		}
710
711		/**
#	Line 397 | Line 718 | public class JSR166TestCase extends Test
718		LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
719		}
720
721	+	private static final long TIMEOUT_DELAY_MS
722	+	= (long) (12.0 * Math.cbrt(delayFactor));
723	+
724		/**
725	<	* Returns a timeout in milliseconds to be used in tests that
726	<	* verify that operations block or time out.
725	>	* Returns a timeout in milliseconds to be used in tests that verify
726	>	* that operations block or time out.  We want this to be longer
727	>	* than the OS scheduling quantum, but not too long, so don't scale
728	>	* linearly with delayFactor; we use "crazy" cube root instead.
729		*/
730	<	long timeoutMillis() {
731	<	return SHORT_DELAY_MS / 4;
730	>	static long timeoutMillis() {
731	>	return TIMEOUT_DELAY_MS;
732		}
733
734		/**
735	<	* Returns a new Date instance representing a time delayMillis
736	<	* milliseconds in the future.
735	>	* Returns a new Date instance representing a time at least
736	>	* delayMillis milliseconds in the future.
737		*/
738		Date delayedDate(long delayMillis) {
739	<	return new Date(System.currentTimeMillis() + delayMillis);
739	>	// Add 1 because currentTimeMillis is known to round into the past.
740	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
741		}
742
743		/**
744		* The first exception encountered if any threadAssertXXX method fails.
745		*/
746		private final AtomicReference<Throwable> threadFailure
747	<	= new AtomicReference<Throwable>(null);
747	>	= new AtomicReference<>(null);
748
749		/**
750		* Records an exception so that it can be rethrown later in the test
#	Line 426 | Line 753 | public class JSR166TestCase extends Test
753		* the same test have no effect.
754		*/
755		public void threadRecordFailure(Throwable t) {
756	+	System.err.println(t);
757	+	dumpTestThreads();
758		threadFailure.compareAndSet(null, t);
759		}
760
#	Line 433 | Line 762 | public class JSR166TestCase extends Test
762		setDelays();
763		}
764
765	+	void tearDownFail(String format, Object... args) {
766	+	String msg = toString() + ": " + String.format(format, args);
767	+	System.err.println(msg);
768	+	dumpTestThreads();
769	+	throw new AssertionError(msg);
770	+	}
771	+
772		/**
773		* Extra checks that get done for all test cases.
774		*
#	Line 451 | Line 787 | public class JSR166TestCase extends Test
787		throw (RuntimeException) t;
788		else if (t instanceof Exception)
789		throw (Exception) t;
790	<	else {
791	<	AssertionFailedError afe =
456	<	new AssertionFailedError(t.toString());
457	<	afe.initCause(t);
458	<	throw afe;
459	<	}
790	>	else
791	>	throw new AssertionError(t.toString(), t);
792		}
793
794		if (Thread.interrupted())
795	<	throw new AssertionFailedError("interrupt status set in main thread");
795	>	tearDownFail("interrupt status set in main thread");
796
797		checkForkJoinPoolThreadLeaks();
798		}
799
800		/**
801	<	* Finds missing try { ... } finally { joinPool(e); }
801	>	* Finds missing PoolCleaners
802		*/
803		void checkForkJoinPoolThreadLeaks() throws InterruptedException {
804	<	Thread[] survivors = new Thread[5];
804	>	Thread[] survivors = new Thread[7];
805		int count = Thread.enumerate(survivors);
806		for (int i = 0; i < count; i++) {
807		Thread thread = survivors[i];
#	Line 477 | Line 809 | public class JSR166TestCase extends Test
809		if (name.startsWith("ForkJoinPool-")) {
810		// give thread some time to terminate
811		thread.join(LONG_DELAY_MS);
812	<	if (!thread.isAlive()) continue;
813	<	thread.stop();
814	<	throw new AssertionFailedError
483	<	(String.format("Found leaked ForkJoinPool thread test=%s thread=%s%n",
484	<	toString(), name));
812	>	if (thread.isAlive())
813	>	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
814	>	thread);
815		}
816		}
817	+
818	+	if (!ForkJoinPool.commonPool()
819	+	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
820	+	tearDownFail("ForkJoin common pool thread stuck");
821		}
822
823		/**
824		* Just like fail(reason), but additionally recording (using
825	<	* threadRecordFailure) any AssertionFailedError thrown, so that
826	<	* the current testcase will fail.
825	>	* threadRecordFailure) any AssertionError thrown, so that the
826	>	* current testcase will fail.
827		*/
828		public void threadFail(String reason) {
829		try {
830		fail(reason);
831	<	} catch (AssertionFailedError t) {
832	<	threadRecordFailure(t);
833	<	fail(reason);
831	>	} catch (AssertionError fail) {
832	>	threadRecordFailure(fail);
833	>	throw fail;
834		}
835		}
836
837		/**
838		* Just like assertTrue(b), but additionally recording (using
839	<	* threadRecordFailure) any AssertionFailedError thrown, so that
840	<	* the current testcase will fail.
839	>	* threadRecordFailure) any AssertionError thrown, so that the
840	>	* current testcase will fail.
841		*/
842		public void threadAssertTrue(boolean b) {
843		try {
844		assertTrue(b);
845	<	} catch (AssertionFailedError t) {
846	<	threadRecordFailure(t);
847	<	throw t;
845	>	} catch (AssertionError fail) {
846	>	threadRecordFailure(fail);
847	>	throw fail;
848		}
849		}
850
851		/**
852		* Just like assertFalse(b), but additionally recording (using
853	<	* threadRecordFailure) any AssertionFailedError thrown, so that
854	<	* the current testcase will fail.
853	>	* threadRecordFailure) any AssertionError thrown, so that the
854	>	* current testcase will fail.
855		*/
856		public void threadAssertFalse(boolean b) {
857		try {
858		assertFalse(b);
859	<	} catch (AssertionFailedError t) {
860	<	threadRecordFailure(t);
861	<	throw t;
859	>	} catch (AssertionError fail) {
860	>	threadRecordFailure(fail);
861	>	throw fail;
862		}
863		}
864
865		/**
866		* Just like assertNull(x), but additionally recording (using
867	<	* threadRecordFailure) any AssertionFailedError thrown, so that
868	<	* the current testcase will fail.
867	>	* threadRecordFailure) any AssertionError thrown, so that the
868	>	* current testcase will fail.
869		*/
870		public void threadAssertNull(Object x) {
871		try {
872		assertNull(x);
873	<	} catch (AssertionFailedError t) {
874	<	threadRecordFailure(t);
875	<	throw t;
873	>	} catch (AssertionError fail) {
874	>	threadRecordFailure(fail);
875	>	throw fail;
876		}
877		}
878
879		/**
880		* Just like assertEquals(x, y), but additionally recording (using
881	<	* threadRecordFailure) any AssertionFailedError thrown, so that
882	<	* the current testcase will fail.
881	>	* threadRecordFailure) any AssertionError thrown, so that the
882	>	* current testcase will fail.
883		*/
884		public void threadAssertEquals(long x, long y) {
885		try {
886		assertEquals(x, y);
887	<	} catch (AssertionFailedError t) {
888	<	threadRecordFailure(t);
889	<	throw t;
887	>	} catch (AssertionError fail) {
888	>	threadRecordFailure(fail);
889	>	throw fail;
890		}
891		}
892
893		/**
894		* Just like assertEquals(x, y), but additionally recording (using
895	<	* threadRecordFailure) any AssertionFailedError thrown, so that
896	<	* the current testcase will fail.
895	>	* threadRecordFailure) any AssertionError thrown, so that the
896	>	* current testcase will fail.
897		*/
898		public void threadAssertEquals(Object x, Object y) {
899		try {
900		assertEquals(x, y);
901	<	} catch (AssertionFailedError t) {
902	<	threadRecordFailure(t);
903	<	throw t;
904	<	} catch (Throwable t) {
905	<	threadUnexpectedException(t);
901	>	} catch (AssertionError fail) {
902	>	threadRecordFailure(fail);
903	>	throw fail;
904	>	} catch (Throwable fail) {
905	>	threadUnexpectedException(fail);
906		}
907		}
908
909		/**
910		* Just like assertSame(x, y), but additionally recording (using
911	<	* threadRecordFailure) any AssertionFailedError thrown, so that
912	<	* the current testcase will fail.
911	>	* threadRecordFailure) any AssertionError thrown, so that the
912	>	* current testcase will fail.
913		*/
914		public void threadAssertSame(Object x, Object y) {
915		try {
916		assertSame(x, y);
917	<	} catch (AssertionFailedError t) {
918	<	threadRecordFailure(t);
919	<	throw t;
917	>	} catch (AssertionError fail) {
918	>	threadRecordFailure(fail);
919	>	throw fail;
920		}
921		}
922
#	Line 602 | Line 936 | public class JSR166TestCase extends Test
936
937		/**
938		* Records the given exception using {@link #threadRecordFailure},
939	<	* then rethrows the exception, wrapping it in an
940	<	* AssertionFailedError if necessary.
939	>	* then rethrows the exception, wrapping it in an AssertionError
940	>	* if necessary.
941		*/
942		public void threadUnexpectedException(Throwable t) {
943		threadRecordFailure(t);
#	Line 612 | Line 946 | public class JSR166TestCase extends Test
946		throw (RuntimeException) t;
947		else if (t instanceof Error)
948		throw (Error) t;
949	<	else {
950	<	AssertionFailedError afe =
617	<	new AssertionFailedError("unexpected exception: " + t);
618	<	afe.initCause(t);
619	<	throw afe;
620	<	}
949	>	else
950	>	throw new AssertionError("unexpected exception: " + t, t);
951		}
952
953		/**
954		* Delays, via Thread.sleep, for the given millisecond delay, but
955		* if the sleep is shorter than specified, may re-sleep or yield
956	<	* until time elapses.
956	>	* until time elapses.  Ensures that the given time, as measured
957	>	* by System.nanoTime(), has elapsed.
958		*/
959		static void delay(long millis) throws InterruptedException {
960	<	long startTime = System.nanoTime();
961	<	long ns = millis * 1000 * 1000;
962	<	for (;;) {
960	>	long nanos = millis * (1000 * 1000);
961	>	final long wakeupTime = System.nanoTime() + nanos;
962	>	do {
963		if (millis > 0L)
964		Thread.sleep(millis);
965		else // too short to sleep
966		Thread.yield();
967	<	long d = ns - (System.nanoTime() - startTime);
968	<	if (d > 0L)
969	<	millis = d / (1000 * 1000);
970	<	else
971	<	break;
967	>	nanos = wakeupTime - System.nanoTime();
968	>	millis = nanos / (1000 * 1000);
969	>	} while (nanos >= 0L);
970	>	}
971	>
972	>	/**
973	>	* Allows use of try-with-resources with per-test thread pools.
974	>	*/
975	>	class PoolCleaner implements AutoCloseable {
976	>	private final ExecutorService pool;
977	>	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
978	>	public void close() { joinPool(pool); }
979	>	}
980	>
981	>	/**
982	>	* An extension of PoolCleaner that has an action to release the pool.
983	>	*/
984	>	class PoolCleanerWithReleaser extends PoolCleaner {
985	>	private final Runnable releaser;
986	>	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
987	>	super(pool);
988	>	this.releaser = releaser;
989	>	}
990	>	public void close() {
991	>	try {
992	>	releaser.run();
993	>	} finally {
994	>	super.close();
995	>	}
996		}
997		}
998
999	+	PoolCleaner cleaner(ExecutorService pool) {
1000	+	return new PoolCleaner(pool);
1001	+	}
1002	+
1003	+	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
1004	+	return new PoolCleanerWithReleaser(pool, releaser);
1005	+	}
1006	+
1007	+	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
1008	+	return new PoolCleanerWithReleaser(pool, releaser(latch));
1009	+	}
1010	+
1011	+	Runnable releaser(final CountDownLatch latch) {
1012	+	return new Runnable() { public void run() {
1013	+	do { latch.countDown(); }
1014	+	while (latch.getCount() > 0);
1015	+	}};
1016	+	}
1017	+
1018	+	PoolCleaner cleaner(ExecutorService pool, AtomicBoolean flag) {
1019	+	return new PoolCleanerWithReleaser(pool, releaser(flag));
1020	+	}
1021	+
1022	+	Runnable releaser(final AtomicBoolean flag) {
1023	+	return new Runnable() { public void run() { flag.set(true); }};
1024	+	}
1025	+
1026		/**
1027		* Waits out termination of a thread pool or fails doing so.
1028		*/
1029	<	void joinPool(ExecutorService exec) {
1029	>	void joinPool(ExecutorService pool) {
1030		try {
1031	<	exec.shutdown();
1032	<	if (!exec.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS))
1033	<	fail("ExecutorService " + exec +
1034	<	" did not terminate in a timely manner");
1031	>	pool.shutdown();
1032	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
1033	>	try {
1034	>	threadFail("ExecutorService " + pool +
1035	>	" did not terminate in a timely manner");
1036	>	} finally {
1037	>	// last resort, for the benefit of subsequent tests
1038	>	pool.shutdownNow();
1039	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
1040	>	}
1041	>	}
1042		} catch (SecurityException ok) {
1043		// Allowed in case test doesn't have privs
1044	<	} catch (InterruptedException ie) {
1045	<	fail("Unexpected InterruptedException");
1044	>	} catch (InterruptedException fail) {
1045	>	threadFail("Unexpected InterruptedException");
1046		}
1047		}
1048
1049		/**
1050	<	* A debugging tool to print all stack traces, as jstack does.
1050	>	* Like Runnable, but with the freedom to throw anything.
1051	>	* junit folks had the same idea:
1052	>	* http://junit.org/junit5/docs/snapshot/api/org/junit/gen5/api/Executable.html
1053		*/
1054	<	static void printAllStackTraces() {
664	<	for (ThreadInfo info :
665	<	ManagementFactory.getThreadMXBean()
666	<	.dumpAllThreads(true, true))
667	<	System.err.print(info);
668	<	}
1054	>	interface Action { public void run() throws Throwable; }
1055
1056		/**
1057	<	* Checks that thread does not terminate within the default
1058	<	* millisecond delay of {@code timeoutMillis()}.
1057	>	* Runs all the given actions in parallel, failing if any fail.
1058	>	* Useful for running multiple variants of tests that are
1059	>	* necessarily individually slow because they must block.
1060		*/
1061	<	void assertThreadStaysAlive(Thread thread) {
1062	<	assertThreadStaysAlive(thread, timeoutMillis());
1061	>	void testInParallel(Action ... actions) {
1062	>	ExecutorService pool = Executors.newCachedThreadPool();
1063	>	try (PoolCleaner cleaner = cleaner(pool)) {
1064	>	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
1065	>	for (final Action action : actions)
1066	>	futures.add(pool.submit(new CheckedRunnable() {
1067	>	public void realRun() throws Throwable { action.run();}}));
1068	>	for (Future<?> future : futures)
1069	>	try {
1070	>	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
1071	>	} catch (ExecutionException ex) {
1072	>	threadUnexpectedException(ex.getCause());
1073	>	} catch (Exception ex) {
1074	>	threadUnexpectedException(ex);
1075	>	}
1076	>	}
1077		}
1078
1079		/**
1080	<	* Checks that thread does not terminate within the given millisecond delay.
1080	>	* A debugging tool to print stack traces of most threads, as jstack does.
1081	>	* Uninteresting threads are filtered out.
1082		*/
1083	<	void assertThreadStaysAlive(Thread thread, long millis) {
1084	<	try {
1085	<	// No need to optimize the failing case via Thread.join.
1086	<	delay(millis);
1087	<	assertTrue(thread.isAlive());
1088	<	} catch (InterruptedException ie) {
1089	<	fail("Unexpected InterruptedException");
1083	>	static void dumpTestThreads() {
1084	>	SecurityManager sm = System.getSecurityManager();
1085	>	if (sm != null) {
1086	>	try {
1087	>	System.setSecurityManager(null);
1088	>	} catch (SecurityException giveUp) {
1089	>	return;
1090	>	}
1091		}
689	–	}
1092
1093	<	/**
1094	<	* Checks that the threads do not terminate within the default
1095	<	* millisecond delay of {@code timeoutMillis()}.
1096	<	*/
1097	<	void assertThreadsStayAlive(Thread... threads) {
1098	<	assertThreadsStayAlive(timeoutMillis(), threads);
1093	>	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
1094	>	System.err.println("------ stacktrace dump start ------");
1095	>	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
1096	>	final String name = info.getThreadName();
1097	>	String lockName;
1098	>	if ("Signal Dispatcher".equals(name))
1099	>	continue;
1100	>	if ("Reference Handler".equals(name)
1101	>	&& (lockName = info.getLockName()) != null
1102	>	&& lockName.startsWith("java.lang.ref.Reference$Lock"))
1103	>	continue;
1104	>	if ("Finalizer".equals(name)
1105	>	&& (lockName = info.getLockName()) != null
1106	>	&& lockName.startsWith("java.lang.ref.ReferenceQueue$Lock"))
1107	>	continue;
1108	>	if ("checkForWedgedTest".equals(name))
1109	>	continue;
1110	>	System.err.print(info);
1111	>	}
1112	>	System.err.println("------ stacktrace dump end ------");
1113	>
1114	>	if (sm != null) System.setSecurityManager(sm);
1115		}
1116
1117		/**
1118	<	* Checks that the threads do not terminate within the given millisecond delay.
1118	>	* Checks that thread eventually enters the expected blocked thread state.
1119		*/
1120	<	void assertThreadsStayAlive(long millis, Thread... threads) {
1121	<	try {
1122	<	// No need to optimize the failing case via Thread.join.
1123	<	delay(millis);
1124	<	for (Thread thread : threads)
1125	<	assertTrue(thread.isAlive());
1126	<	} catch (InterruptedException ie) {
1127	<	fail("Unexpected InterruptedException");
1120	>	void assertThreadBlocks(Thread thread, Thread.State expected) {
1121	>	// always sleep at least 1 ms, with high probability avoiding
1122	>	// transitory states
1123	>	for (long retries = LONG_DELAY_MS * 3 / 4; retries-->0; ) {
1124	>	try { delay(1); }
1125	>	catch (InterruptedException fail) {
1126	>	throw new AssertionError("Unexpected InterruptedException", fail);
1127	>	}
1128	>	Thread.State s = thread.getState();
1129	>	if (s == expected)
1130	>	return;
1131	>	else if (s == Thread.State.TERMINATED)
1132	>	fail("Unexpected thread termination");
1133		}
1134	+	fail("timed out waiting for thread to enter thread state " + expected);
1135		}
1136
1137		/**
#	Line 727 | Line 1151 | public class JSR166TestCase extends Test
1151		future.get(timeoutMillis, MILLISECONDS);
1152		shouldThrow();
1153		} catch (TimeoutException success) {
1154	<	} catch (Exception e) {
1155	<	threadUnexpectedException(e);
1154	>	} catch (Exception fail) {
1155	>	threadUnexpectedException(fail);
1156		} finally { future.cancel(true); }
1157		assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
1158		}
#	Line 748 | Line 1172 | public class JSR166TestCase extends Test
1172		}
1173
1174		/**
1175	+	* The maximum number of consecutive spurious wakeups we should
1176	+	* tolerate (from APIs like LockSupport.park) before failing a test.
1177	+	*/
1178	+	static final int MAX_SPURIOUS_WAKEUPS = 10;
1179	+
1180	+	/**
1181		* The number of elements to place in collections, arrays, etc.
1182		*/
1183		public static final int SIZE = 20;
#	Line 851 | Line 1281 | public class JSR166TestCase extends Test
1281		}
1282		public void refresh() {}
1283		public String toString() {
1284	<	List<Permission> ps = new ArrayList<Permission>();
1284	>	List<Permission> ps = new ArrayList<>();
1285		for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1286		ps.add(e.nextElement());
1287		return "AdjustablePolicy with permissions " + ps;
#	Line 879 | Line 1309 | public class JSR166TestCase extends Test
1309
1310		/**
1311		* Sleeps until the given time has elapsed.
1312	<	* Throws AssertionFailedError if interrupted.
1312	>	* Throws AssertionError if interrupted.
1313		*/
1314	<	void sleep(long millis) {
1314	>	static void sleep(long millis) {
1315		try {
1316		delay(millis);
1317	<	} catch (InterruptedException ie) {
1318	<	AssertionFailedError afe =
889	<	new AssertionFailedError("Unexpected InterruptedException");
890	<	afe.initCause(ie);
891	<	throw afe;
1317	>	} catch (InterruptedException fail) {
1318	>	throw new AssertionError("Unexpected InterruptedException", fail);
1319		}
1320		}
1321
1322		/**
1323		* Spin-waits up to the specified number of milliseconds for the given
1324		* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1325	+	* @param waitingForGodot if non-null, an additional condition to satisfy
1326		*/
1327	<	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1328	<	long startTime = System.nanoTime();
1329	<	for (;;) {
1330	<	Thread.State s = thread.getState();
1331	<	if (s == Thread.State.BLOCKED ||
1332	<	s == Thread.State.WAITING ||
1333	<	s == Thread.State.TIMED_WAITING)
1334	<	return;
1335	<	else if (s == Thread.State.TERMINATED)
1327	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis,
1328	>	Callable<Boolean> waitingForGodot) {
1329	>	for (long startTime = 0L;;) {
1330	>	switch (thread.getState()) {
1331	>	default: break;
1332	>	case BLOCKED: case WAITING: case TIMED_WAITING:
1333	>	try {
1334	>	if (waitingForGodot == null || waitingForGodot.call())
1335	>	return;
1336	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1337	>	break;
1338	>	case TERMINATED:
1339		fail("Unexpected thread termination");
1340	+	}
1341	+
1342	+	if (startTime == 0L)
1343	+	startTime = System.nanoTime();
1344		else if (millisElapsedSince(startTime) > timeoutMillis) {
1345	<	threadAssertTrue(thread.isAlive());
1346	<	return;
1345	>	assertTrue(thread.isAlive());
1346	>	if (waitingForGodot == null
1347	>	|| thread.getState() == Thread.State.RUNNABLE)
1348	>	fail("timed out waiting for thread to enter wait state");
1349	>	else
1350	>	fail("timed out waiting for condition, thread state="
1351	>	+ thread.getState());
1352		}
1353		Thread.yield();
1354		}
1355		}
1356
1357		/**
1358	<	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
1359	<	* state: BLOCKED, WAITING, or TIMED_WAITING.
1358	>	* Spin-waits up to the specified number of milliseconds for the given
1359	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1360	>	*/
1361	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1362	>	waitForThreadToEnterWaitState(thread, timeoutMillis, null);
1363	>	}
1364	>
1365	>	/**
1366	>	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1367	>	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1368		*/
1369		void waitForThreadToEnterWaitState(Thread thread) {
1370	<	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
1370	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS, null);
1371	>	}
1372	>
1373	>	/**
1374	>	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1375	>	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING,
1376	>	* and additionally satisfy the given condition.
1377	>	*/
1378	>	void waitForThreadToEnterWaitState(Thread thread,
1379	>	Callable<Boolean> waitingForGodot) {
1380	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS, waitingForGodot);
1381	>	}
1382	>
1383	>	/**
1384	>	* Spin-waits up to LONG_DELAY_MS milliseconds for the current thread to
1385	>	* be interrupted.  Clears the interrupt status before returning.
1386	>	*/
1387	>	void awaitInterrupted() {
1388	>	for (long startTime = 0L; !Thread.interrupted(); ) {
1389	>	if (startTime == 0L)
1390	>	startTime = System.nanoTime();
1391	>	else if (millisElapsedSince(startTime) > LONG_DELAY_MS)
1392	>	fail("timed out waiting for thread interrupt");
1393	>	Thread.yield();
1394	>	}
1395		}
1396
1397		/**
#	Line 937 | Line 1409 | public class JSR166TestCase extends Test
1409		//             r.run();
1410		//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1411		//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1412	<	//             throw new AssertionFailedError("did not return promptly");
1412	>	//             throw new AssertionError("did not return promptly");
1413		//     }
1414
1415		//     void assertTerminatesPromptly(Runnable r) {
#	Line 950 | Line 1422 | public class JSR166TestCase extends Test
1422		*/
1423		<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1424		long startTime = System.nanoTime();
1425	+	T actual = null;
1426		try {
1427	<	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1427	>	actual = f.get(timeoutMillis, MILLISECONDS);
1428		} catch (Throwable fail) { threadUnexpectedException(fail); }
1429	+	assertEquals(expectedValue, actual);
1430		if (millisElapsedSince(startTime) > timeoutMillis/2)
1431	<	throw new AssertionFailedError("timed get did not return promptly");
1431	>	throw new AssertionError("timed get did not return promptly");
1432		}
1433
1434		<T> void checkTimedGet(Future<T> f, T expectedValue) {
#	Line 979 | Line 1453 | public class JSR166TestCase extends Test
1453		void awaitTermination(Thread t, long timeoutMillis) {
1454		try {
1455		t.join(timeoutMillis);
1456	<	} catch (InterruptedException ie) {
1457	<	threadUnexpectedException(ie);
1458	<	} finally {
1459	<	if (t.getState() != Thread.State.TERMINATED) {
1460	<	t.interrupt();
1461	<	fail("Test timed out");
1462	<	}
1456	>	} catch (InterruptedException fail) {
1457	>	threadUnexpectedException(fail);
1458	>	}
1459	>	Thread.State state;
1460	>	if ((state = t.getState()) != Thread.State.TERMINATED) {
1461	>	t.interrupt();
1462	>	threadFail("timed out waiting for thread to terminate; "
1463	>	+ "state=" + state);
1464		}
1465		}
1466
#	Line 1006 | Line 1481 | public class JSR166TestCase extends Test
1481		public final void run() {
1482		try {
1483		realRun();
1484	<	} catch (Throwable t) {
1485	<	threadUnexpectedException(t);
1011	<	}
1012	<	}
1013	<	}
1014	<
1015	<	public abstract class RunnableShouldThrow implements Runnable {
1016	<	protected abstract void realRun() throws Throwable;
1017	<
1018	<	final Class<?> exceptionClass;
1019	<
1020	<	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
1021	<	this.exceptionClass = exceptionClass;
1022	<	}
1023	<
1024	<	public final void run() {
1025	<	try {
1026	<	realRun();
1027	<	threadShouldThrow(exceptionClass.getSimpleName());
1028	<	} catch (Throwable t) {
1029	<	if (! exceptionClass.isInstance(t))
1030	<	threadUnexpectedException(t);
1484	>	} catch (Throwable fail) {
1485	>	threadUnexpectedException(fail);
1486		}
1487		}
1488		}
#	Line 1044 | Line 1499 | public class JSR166TestCase extends Test
1499		public final void run() {
1500		try {
1501		realRun();
1047	–	threadShouldThrow(exceptionClass.getSimpleName());
1502		} catch (Throwable t) {
1503		if (! exceptionClass.isInstance(t))
1504		threadUnexpectedException(t);
1505	+	return;
1506		}
1507	+	threadShouldThrow(exceptionClass.getSimpleName());
1508		}
1509		}
1510
#	Line 1058 | Line 1514 | public class JSR166TestCase extends Test
1514		public final void run() {
1515		try {
1516		realRun();
1061	–	threadShouldThrow("InterruptedException");
1517		} catch (InterruptedException success) {
1518		threadAssertFalse(Thread.interrupted());
1519	<	} catch (Throwable t) {
1520	<	threadUnexpectedException(t);
1519	>	return;
1520	>	} catch (Throwable fail) {
1521	>	threadUnexpectedException(fail);
1522		}
1523	+	threadShouldThrow("InterruptedException");
1524		}
1525		}
1526
#	Line 1073 | Line 1530 | public class JSR166TestCase extends Test
1530		public final T call() {
1531		try {
1532		return realCall();
1533	<	} catch (Throwable t) {
1534	<	threadUnexpectedException(t);
1078	<	return null;
1079	<	}
1080	<	}
1081	<	}
1082	<
1083	<	public abstract class CheckedInterruptedCallable<T>
1084	<	implements Callable<T> {
1085	<	protected abstract T realCall() throws Throwable;
1086	<
1087	<	public final T call() {
1088	<	try {
1089	<	T result = realCall();
1090	<	threadShouldThrow("InterruptedException");
1091	<	return result;
1092	<	} catch (InterruptedException success) {
1093	<	threadAssertFalse(Thread.interrupted());
1094	<	} catch (Throwable t) {
1095	<	threadUnexpectedException(t);
1533	>	} catch (Throwable fail) {
1534	>	threadUnexpectedException(fail);
1535		}
1536	<	return null;
1536	>	throw new AssertionError("unreached");
1537		}
1538		}
1539
#	Line 1109 | Line 1548 | public class JSR166TestCase extends Test
1548		public static final String TEST_STRING = "a test string";
1549
1550		public static class StringTask implements Callable<String> {
1551	<	public String call() { return TEST_STRING; }
1551	>	final String value;
1552	>	public StringTask() { this(TEST_STRING); }
1553	>	public StringTask(String value) { this.value = value; }
1554	>	public String call() { return value; }
1555		}
1556
1557		public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
#	Line 1122 | Line 1564 | public class JSR166TestCase extends Test
1564		}};
1565		}
1566
1567	<	public Runnable awaiter(final CountDownLatch latch) {
1567	>	public Runnable countDowner(final CountDownLatch latch) {
1568		return new CheckedRunnable() {
1569		public void realRun() throws InterruptedException {
1570	<	await(latch);
1570	>	latch.countDown();
1571		}};
1572		}
1573
1574	+	class LatchAwaiter extends CheckedRunnable {
1575	+	static final int NEW = 0;
1576	+	static final int RUNNING = 1;
1577	+	static final int DONE = 2;
1578	+	final CountDownLatch latch;
1579	+	int state = NEW;
1580	+	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1581	+	public void realRun() throws InterruptedException {
1582	+	state = 1;
1583	+	await(latch);
1584	+	state = 2;
1585	+	}
1586	+	}
1587	+
1588	+	public LatchAwaiter awaiter(CountDownLatch latch) {
1589	+	return new LatchAwaiter(latch);
1590	+	}
1591	+
1592	+	public void await(CountDownLatch latch, long timeoutMillis) {
1593	+	boolean timedOut = false;
1594	+	try {
1595	+	timedOut = !latch.await(timeoutMillis, MILLISECONDS);
1596	+	} catch (Throwable fail) {
1597	+	threadUnexpectedException(fail);
1598	+	}
1599	+	if (timedOut)
1600	+	fail("timed out waiting for CountDownLatch for "
1601	+	+ (timeoutMillis/1000) + " sec");
1602	+	}
1603	+
1604		public void await(CountDownLatch latch) {
1605	+	await(latch, LONG_DELAY_MS);
1606	+	}
1607	+
1608	+	public void await(Semaphore semaphore) {
1609	+	boolean timedOut = false;
1610		try {
1611	<	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1612	<	} catch (Throwable t) {
1613	<	threadUnexpectedException(t);
1611	>	timedOut = !semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS);
1612	>	} catch (Throwable fail) {
1613	>	threadUnexpectedException(fail);
1614		}
1615	+	if (timedOut)
1616	+	fail("timed out waiting for Semaphore for "
1617	+	+ (LONG_DELAY_MS/1000) + " sec");
1618		}
1619
1620	<	public void await(Semaphore semaphore) {
1620	>	public void await(CyclicBarrier barrier) {
1621		try {
1622	<	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1623	<	} catch (Throwable t) {
1624	<	threadUnexpectedException(t);
1622	>	barrier.await(LONG_DELAY_MS, MILLISECONDS);
1623	>	} catch (Throwable fail) {
1624	>	threadUnexpectedException(fail);
1625		}
1626		}
1627
#	Line 1159 | Line 1639 | public class JSR166TestCase extends Test
1639		//         long startTime = System.nanoTime();
1640		//         while (!flag.get()) {
1641		//             if (millisElapsedSince(startTime) > timeoutMillis)
1642	<	//                 throw new AssertionFailedError("timed out");
1642	>	//                 throw new AssertionError("timed out");
1643		//             Thread.yield();
1644		//         }
1645		//     }
#	Line 1168 | Line 1648 | public class JSR166TestCase extends Test
1648		public String call() { throw new NullPointerException(); }
1649		}
1650
1171	–	public static class CallableOne implements Callable<Integer> {
1172	–	public Integer call() { return one; }
1173	–	}
1174	–
1175	–	public class ShortRunnable extends CheckedRunnable {
1176	–	protected void realRun() throws Throwable {
1177	–	delay(SHORT_DELAY_MS);
1178	–	}
1179	–	}
1180	–
1181	–	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1182	–	protected void realRun() throws InterruptedException {
1183	–	delay(SHORT_DELAY_MS);
1184	–	}
1185	–	}
1186	–
1187	–	public class SmallRunnable extends CheckedRunnable {
1188	–	protected void realRun() throws Throwable {
1189	–	delay(SMALL_DELAY_MS);
1190	–	}
1191	–	}
1192	–
1193	–	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1194	–	protected void realRun() {
1195	–	try {
1196	–	delay(SMALL_DELAY_MS);
1197	–	} catch (InterruptedException ok) {}
1198	–	}
1199	–	}
1200	–
1201	–	public class SmallCallable extends CheckedCallable {
1202	–	protected Object realCall() throws InterruptedException {
1203	–	delay(SMALL_DELAY_MS);
1204	–	return Boolean.TRUE;
1205	–	}
1206	–	}
1207	–
1208	–	public class MediumRunnable extends CheckedRunnable {
1209	–	protected void realRun() throws Throwable {
1210	–	delay(MEDIUM_DELAY_MS);
1211	–	}
1212	–	}
1213	–
1214	–	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1215	–	protected void realRun() throws InterruptedException {
1216	–	delay(MEDIUM_DELAY_MS);
1217	–	}
1218	–	}
1219	–
1651		public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1652		return new CheckedRunnable() {
1653		protected void realRun() {
#	Line 1226 | Line 1657 | public class JSR166TestCase extends Test
1657		}};
1658		}
1659
1229	–	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1230	–	protected void realRun() {
1231	–	try {
1232	–	delay(MEDIUM_DELAY_MS);
1233	–	} catch (InterruptedException ok) {}
1234	–	}
1235	–	}
1236	–
1237	–	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1238	–	protected void realRun() {
1239	–	try {
1240	–	delay(LONG_DELAY_MS);
1241	–	} catch (InterruptedException ok) {}
1242	–	}
1243	–	}
1244	–
1660		/**
1661		* For use as ThreadFactory in constructors
1662		*/
#	Line 1255 | Line 1670 | public class JSR166TestCase extends Test
1670		boolean isDone();
1671		}
1672
1258	–	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1259	–	return new TrackedRunnable() {
1260	–	private volatile boolean done = false;
1261	–	public boolean isDone() { return done; }
1262	–	public void run() {
1263	–	try {
1264	–	delay(timeoutMillis);
1265	–	done = true;
1266	–	} catch (InterruptedException ok) {}
1267	–	}
1268	–	};
1269	–	}
1270	–
1271	–	public static class TrackedShortRunnable implements Runnable {
1272	–	public volatile boolean done = false;
1273	–	public void run() {
1274	–	try {
1275	–	delay(SHORT_DELAY_MS);
1276	–	done = true;
1277	–	} catch (InterruptedException ok) {}
1278	–	}
1279	–	}
1280	–
1281	–	public static class TrackedSmallRunnable implements Runnable {
1282	–	public volatile boolean done = false;
1283	–	public void run() {
1284	–	try {
1285	–	delay(SMALL_DELAY_MS);
1286	–	done = true;
1287	–	} catch (InterruptedException ok) {}
1288	–	}
1289	–	}
1290	–
1291	–	public static class TrackedMediumRunnable implements Runnable {
1292	–	public volatile boolean done = false;
1293	–	public void run() {
1294	–	try {
1295	–	delay(MEDIUM_DELAY_MS);
1296	–	done = true;
1297	–	} catch (InterruptedException ok) {}
1298	–	}
1299	–	}
1300	–
1301	–	public static class TrackedLongRunnable implements Runnable {
1302	–	public volatile boolean done = false;
1303	–	public void run() {
1304	–	try {
1305	–	delay(LONG_DELAY_MS);
1306	–	done = true;
1307	–	} catch (InterruptedException ok) {}
1308	–	}
1309	–	}
1310	–
1673		public static class TrackedNoOpRunnable implements Runnable {
1674		public volatile boolean done = false;
1675		public void run() {
#	Line 1315 | Line 1677 | public class JSR166TestCase extends Test
1677		}
1678		}
1679
1318	–	public static class TrackedCallable implements Callable {
1319	–	public volatile boolean done = false;
1320	–	public Object call() {
1321	–	try {
1322	–	delay(SMALL_DELAY_MS);
1323	–	done = true;
1324	–	} catch (InterruptedException ok) {}
1325	–	return Boolean.TRUE;
1326	–	}
1327	–	}
1328	–
1680		/**
1681		* Analog of CheckedRunnable for RecursiveAction
1682		*/
#	Line 1335 | Line 1686 | public class JSR166TestCase extends Test
1686		@Override protected final void compute() {
1687		try {
1688		realCompute();
1689	<	} catch (Throwable t) {
1690	<	threadUnexpectedException(t);
1689	>	} catch (Throwable fail) {
1690	>	threadUnexpectedException(fail);
1691		}
1692		}
1693		}
#	Line 1350 | Line 1701 | public class JSR166TestCase extends Test
1701		@Override protected final T compute() {
1702		try {
1703		return realCompute();
1704	<	} catch (Throwable t) {
1705	<	threadUnexpectedException(t);
1355	<	return null;
1704	>	} catch (Throwable fail) {
1705	>	threadUnexpectedException(fail);
1706		}
1707	+	throw new AssertionError("unreached");
1708		}
1709		}
1710
#	Line 1367 | Line 1718 | public class JSR166TestCase extends Test
1718
1719		/**
1720		* A CyclicBarrier that uses timed await and fails with
1721	<	* AssertionFailedErrors instead of throwing checked exceptions.
1721	>	* AssertionErrors instead of throwing checked exceptions.
1722		*/
1723	<	public class CheckedBarrier extends CyclicBarrier {
1723	>	public static class CheckedBarrier extends CyclicBarrier {
1724		public CheckedBarrier(int parties) { super(parties); }
1725
1726		public int await() {
1727		try {
1728		return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1729	<	} catch (TimeoutException e) {
1730	<	throw new AssertionFailedError("timed out");
1731	<	} catch (Exception e) {
1732	<	AssertionFailedError afe =
1382	<	new AssertionFailedError("Unexpected exception: " + e);
1383	<	afe.initCause(e);
1384	<	throw afe;
1729	>	} catch (TimeoutException timedOut) {
1730	>	throw new AssertionError("timed out");
1731	>	} catch (Exception fail) {
1732	>	throw new AssertionError("Unexpected exception: " + fail, fail);
1733		}
1734		}
1735		}
#	Line 1392 | Line 1740 | public class JSR166TestCase extends Test
1740		assertEquals(0, q.size());
1741		assertNull(q.peek());
1742		assertNull(q.poll());
1743	<	assertNull(q.poll(0, MILLISECONDS));
1743	>	assertNull(q.poll(randomExpiredTimeout(), randomTimeUnit()));
1744		assertEquals(q.toString(), "[]");
1745		assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1746		assertFalse(q.iterator().hasNext());
#	Line 1408 | Line 1756 | public class JSR166TestCase extends Test
1756		q.remove();
1757		shouldThrow();
1758		} catch (NoSuchElementException success) {}
1759	<	} catch (InterruptedException ie) {
1412	<	threadUnexpectedException(ie);
1413	<	}
1759	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1760		}
1761
1762		void assertSerialEquals(Object x, Object y) {
#	Line 1429 | Line 1775 | public class JSR166TestCase extends Test
1775		oos.flush();
1776		oos.close();
1777		return bos.toByteArray();
1778	<	} catch (Throwable t) {
1779	<	threadUnexpectedException(t);
1778	>	} catch (Throwable fail) {
1779	>	threadUnexpectedException(fail);
1780		return new byte[0];
1781		}
1782		}
1783
1784	+	void assertImmutable(Object o) {
1785	+	if (o instanceof Collection) {
1786	+	assertThrows(
1787	+	UnsupportedOperationException.class,
1788	+	() -> ((Collection) o).add(null));
1789	+	}
1790	+	}
1791	+
1792		@SuppressWarnings("unchecked")
1793		<T> T serialClone(T o) {
1794	+	T clone = null;
1795		try {
1796		ObjectInputStream ois = new ObjectInputStream
1797		(new ByteArrayInputStream(serialBytes(o)));
1798	<	T clone = (T) ois.readObject();
1799	<	assertSame(o.getClass(), clone.getClass());
1800	<	return clone;
1801	<	} catch (Throwable t) {
1802	<	threadUnexpectedException(t);
1798	>	clone = (T) ois.readObject();
1799	>	} catch (Throwable fail) {
1800	>	threadUnexpectedException(fail);
1801	>	}
1802	>	if (o == clone) assertImmutable(o);
1803	>	else assertSame(o.getClass(), clone.getClass());
1804	>	return clone;
1805	>	}
1806	>
1807	>	/**
1808	>	* A version of serialClone that leaves error handling (for
1809	>	* e.g. NotSerializableException) up to the caller.
1810	>	*/
1811	>	@SuppressWarnings("unchecked")
1812	>	<T> T serialClonePossiblyFailing(T o)
1813	>	throws ReflectiveOperationException, java.io.IOException {
1814	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1815	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1816	>	oos.writeObject(o);
1817	>	oos.flush();
1818	>	oos.close();
1819	>	ObjectInputStream ois = new ObjectInputStream
1820	>	(new ByteArrayInputStream(bos.toByteArray()));
1821	>	T clone = (T) ois.readObject();
1822	>	if (o == clone) assertImmutable(o);
1823	>	else assertSame(o.getClass(), clone.getClass());
1824	>	return clone;
1825	>	}
1826	>
1827	>	/**
1828	>	* If o implements Cloneable and has a public clone method,
1829	>	* returns a clone of o, else null.
1830	>	*/
1831	>	@SuppressWarnings("unchecked")
1832	>	<T> T cloneableClone(T o) {
1833	>	if (!(o instanceof Cloneable)) return null;
1834	>	final T clone;
1835	>	try {
1836	>	clone = (T) o.getClass().getMethod("clone").invoke(o);
1837	>	} catch (NoSuchMethodException ok) {
1838		return null;
1839	+	} catch (ReflectiveOperationException unexpected) {
1840	+	throw new Error(unexpected);
1841		}
1842	+	assertNotSame(o, clone); // not 100% guaranteed by spec
1843	+	assertSame(o.getClass(), clone.getClass());
1844	+	return clone;
1845		}
1846
1847		public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1848	<	Runnable... throwingActions) {
1849	<	for (Runnable throwingAction : throwingActions) {
1848	>	Action... throwingActions) {
1849	>	for (Action throwingAction : throwingActions) {
1850		boolean threw = false;
1851		try { throwingAction.run(); }
1852		catch (Throwable t) {
1853		threw = true;
1854	<	if (!expectedExceptionClass.isInstance(t)) {
1855	<	AssertionFailedError afe =
1856	<	new AssertionFailedError
1857	<	("Expected " + expectedExceptionClass.getName() +
1858	<	", got " + t.getClass().getName());
1464	<	afe.initCause(t);
1465	<	threadUnexpectedException(afe);
1466	<	}
1854	>	if (!expectedExceptionClass.isInstance(t))
1855	>	throw new AssertionError(
1856	>	"Expected " + expectedExceptionClass.getName() +
1857	>	", got " + t.getClass().getName(),
1858	>	t);
1859		}
1860		if (!threw)
1861		shouldThrow(expectedExceptionClass.getName());
#	Line 1476 | Line 1868 | public class JSR166TestCase extends Test
1868		shouldThrow();
1869		} catch (NoSuchElementException success) {}
1870		assertFalse(it.hasNext());
1871	<	}
1871	>	}
1872	>
1873	>	public <T> Callable<T> callableThrowing(final Exception ex) {
1874	>	return new Callable<T>() { public T call() throws Exception { throw ex; }};
1875	>	}
1876	>
1877	>	public Runnable runnableThrowing(final RuntimeException ex) {
1878	>	return new Runnable() { public void run() { throw ex; }};
1879	>	}
1880	>
1881	>	/** A reusable thread pool to be shared by tests. */
1882	>	static final ExecutorService cachedThreadPool =
1883	>	new ThreadPoolExecutor(0, Integer.MAX_VALUE,
1884	>	1000L, MILLISECONDS,
1885	>	new SynchronousQueue<Runnable>());
1886	>
1887	>	static <T> void shuffle(T[] array) {
1888	>	Collections.shuffle(Arrays.asList(array), ThreadLocalRandom.current());
1889	>	}
1890	>
1891	>	/**
1892	>	* Returns the same String as would be returned by {@link
1893	>	* Object#toString}, whether or not the given object's class
1894	>	* overrides toString().
1895	>	*
1896	>	* @see System#identityHashCode
1897	>	*/
1898	>	static String identityString(Object x) {
1899	>	return x.getClass().getName()
1900	>	+ "@" + Integer.toHexString(System.identityHashCode(x));
1901	>	}
1902	>
1903	>	// --- Shared assertions for Executor tests ---
1904	>
1905	>	/**
1906	>	* Returns maximum number of tasks that can be submitted to given
1907	>	* pool (with bounded queue) before saturation (when submission
1908	>	* throws RejectedExecutionException).
1909	>	*/
1910	>	static final int saturatedSize(ThreadPoolExecutor pool) {
1911	>	BlockingQueue<Runnable> q = pool.getQueue();
1912	>	return pool.getMaximumPoolSize() + q.size() + q.remainingCapacity();
1913	>	}
1914	>
1915	>	@SuppressWarnings("FutureReturnValueIgnored")
1916	>	void assertNullTaskSubmissionThrowsNullPointerException(Executor e) {
1917	>	try {
1918	>	e.execute((Runnable) null);
1919	>	shouldThrow();
1920	>	} catch (NullPointerException success) {}
1921	>
1922	>	if (! (e instanceof ExecutorService)) return;
1923	>	ExecutorService es = (ExecutorService) e;
1924	>	try {
1925	>	es.submit((Runnable) null);
1926	>	shouldThrow();
1927	>	} catch (NullPointerException success) {}
1928	>	try {
1929	>	es.submit((Runnable) null, Boolean.TRUE);
1930	>	shouldThrow();
1931	>	} catch (NullPointerException success) {}
1932	>	try {
1933	>	es.submit((Callable) null);
1934	>	shouldThrow();
1935	>	} catch (NullPointerException success) {}
1936	>
1937	>	if (! (e instanceof ScheduledExecutorService)) return;
1938	>	ScheduledExecutorService ses = (ScheduledExecutorService) e;
1939	>	try {
1940	>	ses.schedule((Runnable) null,
1941	>	randomTimeout(), randomTimeUnit());
1942	>	shouldThrow();
1943	>	} catch (NullPointerException success) {}
1944	>	try {
1945	>	ses.schedule((Callable) null,
1946	>	randomTimeout(), randomTimeUnit());
1947	>	shouldThrow();
1948	>	} catch (NullPointerException success) {}
1949	>	try {
1950	>	ses.scheduleAtFixedRate((Runnable) null,
1951	>	randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
1952	>	shouldThrow();
1953	>	} catch (NullPointerException success) {}
1954	>	try {
1955	>	ses.scheduleWithFixedDelay((Runnable) null,
1956	>	randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
1957	>	shouldThrow();
1958	>	} catch (NullPointerException success) {}
1959	>	}
1960	>
1961	>	void setRejectedExecutionHandler(
1962	>	ThreadPoolExecutor p, RejectedExecutionHandler handler) {
1963	>	p.setRejectedExecutionHandler(handler);
1964	>	assertSame(handler, p.getRejectedExecutionHandler());
1965	>	}
1966	>
1967	>	void assertTaskSubmissionsAreRejected(ThreadPoolExecutor p) {
1968	>	final RejectedExecutionHandler savedHandler = p.getRejectedExecutionHandler();
1969	>	final long savedTaskCount = p.getTaskCount();
1970	>	final long savedCompletedTaskCount = p.getCompletedTaskCount();
1971	>	final int savedQueueSize = p.getQueue().size();
1972	>	final boolean stock = (p.getClass().getClassLoader() == null);
1973	>
1974	>	Runnable r = () -> {};
1975	>	Callable<Boolean> c = () -> Boolean.TRUE;
1976	>
1977	>	class Recorder implements RejectedExecutionHandler {
1978	>	public volatile Runnable r = null;
1979	>	public volatile ThreadPoolExecutor p = null;
1980	>	public void reset() { r = null; p = null; }
1981	>	public void rejectedExecution(Runnable r, ThreadPoolExecutor p) {
1982	>	assertNull(this.r);
1983	>	assertNull(this.p);
1984	>	this.r = r;
1985	>	this.p = p;
1986	>	}
1987	>	}
1988	>
1989	>	// check custom handler is invoked exactly once per task
1990	>	Recorder recorder = new Recorder();
1991	>	setRejectedExecutionHandler(p, recorder);
1992	>	for (int i = 2; i--> 0; ) {
1993	>	recorder.reset();
1994	>	p.execute(r);
1995	>	if (stock && p.getClass() == ThreadPoolExecutor.class)
1996	>	assertSame(r, recorder.r);
1997	>	assertSame(p, recorder.p);
1998	>
1999	>	recorder.reset();
2000	>	assertFalse(p.submit(r).isDone());
2001	>	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2002	>	assertSame(p, recorder.p);
2003	>
2004	>	recorder.reset();
2005	>	assertFalse(p.submit(r, Boolean.TRUE).isDone());
2006	>	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2007	>	assertSame(p, recorder.p);
2008	>
2009	>	recorder.reset();
2010	>	assertFalse(p.submit(c).isDone());
2011	>	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2012	>	assertSame(p, recorder.p);
2013	>
2014	>	if (p instanceof ScheduledExecutorService) {
2015	>	ScheduledExecutorService s = (ScheduledExecutorService) p;
2016	>	ScheduledFuture<?> future;
2017	>
2018	>	recorder.reset();
2019	>	future = s.schedule(r, randomTimeout(), randomTimeUnit());
2020	>	assertFalse(future.isDone());
2021	>	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2022	>	assertSame(p, recorder.p);
2023	>
2024	>	recorder.reset();
2025	>	future = s.schedule(c, randomTimeout(), randomTimeUnit());
2026	>	assertFalse(future.isDone());
2027	>	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2028	>	assertSame(p, recorder.p);
2029	>
2030	>	recorder.reset();
2031	>	future = s.scheduleAtFixedRate(r, randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2032	>	assertFalse(future.isDone());
2033	>	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2034	>	assertSame(p, recorder.p);
2035	>
2036	>	recorder.reset();
2037	>	future = s.scheduleWithFixedDelay(r, randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2038	>	assertFalse(future.isDone());
2039	>	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2040	>	assertSame(p, recorder.p);
2041	>	}
2042	>	}
2043	>
2044	>	// Checking our custom handler above should be sufficient, but
2045	>	// we add some integration tests of standard handlers.
2046	>	final AtomicReference<Thread> thread = new AtomicReference<>();
2047	>	final Runnable setThread = () -> thread.set(Thread.currentThread());
2048	>
2049	>	setRejectedExecutionHandler(p, new ThreadPoolExecutor.AbortPolicy());
2050	>	try {
2051	>	p.execute(setThread);
2052	>	shouldThrow();
2053	>	} catch (RejectedExecutionException success) {}
2054	>	assertNull(thread.get());
2055	>
2056	>	setRejectedExecutionHandler(p, new ThreadPoolExecutor.DiscardPolicy());
2057	>	p.execute(setThread);
2058	>	assertNull(thread.get());
2059	>
2060	>	setRejectedExecutionHandler(p, new ThreadPoolExecutor.CallerRunsPolicy());
2061	>	p.execute(setThread);
2062	>	if (p.isShutdown())
2063	>	assertNull(thread.get());
2064	>	else
2065	>	assertSame(Thread.currentThread(), thread.get());
2066	>
2067	>	setRejectedExecutionHandler(p, savedHandler);
2068	>
2069	>	// check that pool was not perturbed by handlers
2070	>	assertEquals(savedTaskCount, p.getTaskCount());
2071	>	assertEquals(savedCompletedTaskCount, p.getCompletedTaskCount());
2072	>	assertEquals(savedQueueSize, p.getQueue().size());
2073	>	}
2074	>
2075	>	void assertCollectionsEquals(Collection<?> x, Collection<?> y) {
2076	>	assertEquals(x, y);
2077	>	assertEquals(y, x);
2078	>	assertEquals(x.isEmpty(), y.isEmpty());
2079	>	assertEquals(x.size(), y.size());
2080	>	if (x instanceof List) {
2081	>	assertEquals(x.toString(), y.toString());
2082	>	}
2083	>	if (x instanceof List || x instanceof Set) {
2084	>	assertEquals(x.hashCode(), y.hashCode());
2085	>	}
2086	>	if (x instanceof List || x instanceof Deque) {
2087	>	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
2088	>	assertTrue(Arrays.equals(x.toArray(new Object[0]),
2089	>	y.toArray(new Object[0])));
2090	>	}
2091	>	}
2092	>
2093	>	/**
2094	>	* A weaker form of assertCollectionsEquals which does not insist
2095	>	* that the two collections satisfy Object#equals(Object), since
2096	>	* they may use identity semantics as Deques do.
2097	>	*/
2098	>	void assertCollectionsEquivalent(Collection<?> x, Collection<?> y) {
2099	>	if (x instanceof List || x instanceof Set)
2100	>	assertCollectionsEquals(x, y);
2101	>	else {
2102	>	assertEquals(x.isEmpty(), y.isEmpty());
2103	>	assertEquals(x.size(), y.size());
2104	>	assertEquals(new HashSet(x), new HashSet(y));
2105	>	if (x instanceof Deque) {
2106	>	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
2107	>	assertTrue(Arrays.equals(x.toArray(new Object[0]),
2108	>	y.toArray(new Object[0])));
2109	>	}
2110	>	}
2111	>	}
2112		}

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