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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.124 by jsr166, Wed Dec 31 21:06:32 2014 UTC vs.
Revision 1.263 by jsr166, Thu Sep 5 22:05:30 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
49	–	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 61 | 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 83 | 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
104	<	* 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 159 | 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 170 | 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();
188	<	long t0 = System.nanoTime();
189	<	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.
200	–	* Optional command line arg provides the number of iterations to
201	–	* 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) {
213	<	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		}
217	–	System.exit(0);
413		}
414
415		public static TestSuite newTestSuite(Object... suiteOrClasses) {
#	Line 235 | 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",
239	<	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 261 | 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 288 | 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 310 | 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 317 | 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 338 | 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 363 | 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 371 | 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 658 | public class JSR166TestCase extends Test
658		public static long LONG_DELAY_MS;
659
660		/**
661	<	* Returns the shortest timed delay. This could
662	<	* be reimplemented to use for example a Property.
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 a timeout that means "no waiting", i.e. not positive.
685	>	*/
686	>	static long randomExpiredTimeout() { return RANDOM_EXPIRED_TIMEOUT; }
687	>
688	>	/**
689	>	* Returns a random non-null TimeUnit.
690	>	*/
691	>	static TimeUnit randomTimeUnit() { return RANDOM_TIMEUNIT; }
692	>
693	>	/**
694	>	* Returns a random boolean; a "coin flip".
695	>	*/
696	>	static boolean randomBoolean() {
697	>	return ThreadLocalRandom.current().nextBoolean();
698	>	}
699	>
700	>	/**
701	>	* Returns a random element from given choices.
702	>	*/
703	>	<T> T chooseRandomly(T... choices) {
704	>	return choices[ThreadLocalRandom.current().nextInt(choices.length)];
705	>	}
706	>
707	>	/**
708	>	* Returns the shortest timed delay. This can be scaled up for
709	>	* slow machines using the jsr166.delay.factor system property,
710	>	* or via jtreg's -timeoutFactor: flag.
711	>	* http://openjdk.java.net/jtreg/command-help.html
712		*/
713		protected long getShortDelay() {
714	<	return 50;
714	>	return (long) (50 * delayFactor);
715		}
716
717		/**
#	Line 394 | Line 722 | public class JSR166TestCase extends Test
722		SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
723		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
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
733	<	* verify that operations block or time out.
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	<	long timeoutMillis() {
738	<	return SHORT_DELAY_MS / 4;
737	>	static long timeoutMillis() {
738	>	return TIMEOUT_DELAY_MS;
739		}
740
741		/**
742	<	* Returns a new Date instance representing a time delayMillis
743	<	* milliseconds in the future.
742	>	* Returns a new Date instance representing a time at least
743	>	* delayMillis milliseconds in the future.
744		*/
745		Date delayedDate(long delayMillis) {
746	<	return new Date(System.currentTimeMillis() + 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		* The first exception encountered if any threadAssertXXX method fails.
752		*/
753		private final AtomicReference<Throwable> threadFailure
754	<	= new AtomicReference<Throwable>(null);
754	>	= new AtomicReference<>(null);
755
756		/**
757		* Records an exception so that it can be rethrown later in the test
#	Line 425 | Line 760 | public class JSR166TestCase extends Test
760		* the same test have no effect.
761		*/
762		public void threadRecordFailure(Throwable t) {
763	<	threadFailure.compareAndSet(null, t);
763	>	System.err.println(t);
764	>	if (threadFailure.compareAndSet(null, t))
765	>	dumpTestThreads();
766		}
767
768		public void setUp() {
769		setDelays();
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		* Extra checks that get done for all test cases.
781		*
#	Line 450 | Line 794 | public class JSR166TestCase extends Test
794		throw (RuntimeException) t;
795		else if (t instanceof Exception)
796		throw (Exception) t;
797	<	else {
798	<	AssertionFailedError afe =
455	<	new AssertionFailedError(t.toString());
456	<	afe.initCause(t);
457	<	throw afe;
458	<	}
797	>	else
798	>	throw new AssertionError(t.toString(), t);
799		}
800
801		if (Thread.interrupted())
802	<	throw new AssertionFailedError("interrupt status set in main thread");
802	>	tearDownFail("interrupt status set in main thread");
803
804		checkForkJoinPoolThreadLeaks();
805		}
806
807		/**
808	<	* Find missing try { ... } finally { joinPool(e); }
808	>	* Finds missing PoolCleaners
809		*/
810		void checkForkJoinPoolThreadLeaks() throws InterruptedException {
811	<	Thread[] survivors = new Thread[5];
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];
#	Line 476 | Line 816 | public class JSR166TestCase extends Test
816		if (name.startsWith("ForkJoinPool-")) {
817		// give thread some time to terminate
818		thread.join(LONG_DELAY_MS);
819	<	if (!thread.isAlive()) continue;
820	<	thread.stop();
821	<	throw new AssertionFailedError
482	<	(String.format("Found leaked ForkJoinPool thread test=%s thread=%s%n",
483	<	toString(), name));
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		* Just like fail(reason), but additionally recording (using
832	<	* threadRecordFailure) any AssertionFailedError thrown, so that
833	<	* the current testcase will fail.
832	>	* threadRecordFailure) any AssertionError thrown, so that the
833	>	* current testcase will fail.
834		*/
835		public void threadFail(String reason) {
836		try {
837		fail(reason);
838	<	} catch (AssertionFailedError t) {
839	<	threadRecordFailure(t);
840	<	fail(reason);
838	>	} catch (AssertionError fail) {
839	>	threadRecordFailure(fail);
840	>	throw fail;
841		}
842		}
843
844		/**
845		* Just like assertTrue(b), but additionally recording (using
846	<	* threadRecordFailure) any AssertionFailedError thrown, so that
847	<	* the current testcase will fail.
846	>	* threadRecordFailure) any AssertionError thrown, so that the
847	>	* current testcase will fail.
848		*/
849		public void threadAssertTrue(boolean b) {
850		try {
851		assertTrue(b);
852	<	} catch (AssertionFailedError t) {
853	<	threadRecordFailure(t);
854	<	throw t;
852	>	} catch (AssertionError fail) {
853	>	threadRecordFailure(fail);
854	>	throw fail;
855		}
856		}
857
858		/**
859		* Just like assertFalse(b), but additionally recording (using
860	<	* threadRecordFailure) any AssertionFailedError thrown, so that
861	<	* the current testcase will fail.
860	>	* threadRecordFailure) any AssertionError thrown, so that the
861	>	* current testcase will fail.
862		*/
863		public void threadAssertFalse(boolean b) {
864		try {
865		assertFalse(b);
866	<	} catch (AssertionFailedError t) {
867	<	threadRecordFailure(t);
868	<	throw t;
866	>	} catch (AssertionError fail) {
867	>	threadRecordFailure(fail);
868	>	throw fail;
869		}
870		}
871
872		/**
873		* Just like assertNull(x), but additionally recording (using
874	<	* threadRecordFailure) any AssertionFailedError thrown, so that
875	<	* the current testcase will fail.
874	>	* threadRecordFailure) any AssertionError thrown, so that the
875	>	* current testcase will fail.
876		*/
877		public void threadAssertNull(Object x) {
878		try {
879		assertNull(x);
880	<	} catch (AssertionFailedError t) {
881	<	threadRecordFailure(t);
882	<	throw t;
880	>	} catch (AssertionError fail) {
881	>	threadRecordFailure(fail);
882	>	throw fail;
883		}
884		}
885
886		/**
887		* Just like assertEquals(x, y), but additionally recording (using
888	<	* threadRecordFailure) any AssertionFailedError thrown, so that
889	<	* the current testcase will fail.
888	>	* threadRecordFailure) any AssertionError thrown, so that the
889	>	* current testcase will fail.
890		*/
891		public void threadAssertEquals(long x, long y) {
892		try {
893		assertEquals(x, y);
894	<	} catch (AssertionFailedError t) {
895	<	threadRecordFailure(t);
896	<	throw t;
894	>	} catch (AssertionError fail) {
895	>	threadRecordFailure(fail);
896	>	throw fail;
897		}
898		}
899
900		/**
901		* Just like assertEquals(x, y), but additionally recording (using
902	<	* threadRecordFailure) any AssertionFailedError thrown, so that
903	<	* the current testcase will fail.
902	>	* threadRecordFailure) any AssertionError thrown, so that the
903	>	* current testcase will fail.
904		*/
905		public void threadAssertEquals(Object x, Object y) {
906		try {
907		assertEquals(x, y);
908	<	} catch (AssertionFailedError t) {
909	<	threadRecordFailure(t);
910	<	throw t;
911	<	} catch (Throwable t) {
912	<	threadUnexpectedException(t);
908	>	} catch (AssertionError fail) {
909	>	threadRecordFailure(fail);
910	>	throw fail;
911	>	} catch (Throwable fail) {
912	>	threadUnexpectedException(fail);
913		}
914		}
915
916		/**
917		* Just like assertSame(x, y), but additionally recording (using
918	<	* threadRecordFailure) any AssertionFailedError thrown, so that
919	<	* the current testcase will fail.
918	>	* threadRecordFailure) any AssertionError thrown, so that the
919	>	* current testcase will fail.
920		*/
921		public void threadAssertSame(Object x, Object y) {
922		try {
923		assertSame(x, y);
924	<	} catch (AssertionFailedError t) {
925	<	threadRecordFailure(t);
926	<	throw t;
924	>	} catch (AssertionError fail) {
925	>	threadRecordFailure(fail);
926	>	throw fail;
927		}
928		}
929
#	Line 601 | Line 943 | public class JSR166TestCase extends Test
943
944		/**
945		* Records the given exception using {@link #threadRecordFailure},
946	<	* then rethrows the exception, wrapping it in an
947	<	* AssertionFailedError if necessary.
946	>	* then rethrows the exception, wrapping it in an AssertionError
947	>	* if necessary.
948		*/
949		public void threadUnexpectedException(Throwable t) {
950		threadRecordFailure(t);
#	Line 611 | Line 953 | public class JSR166TestCase extends Test
953		throw (RuntimeException) t;
954		else if (t instanceof Error)
955		throw (Error) t;
956	<	else {
957	<	AssertionFailedError afe =
616	<	new AssertionFailedError("unexpected exception: " + t);
617	<	afe.initCause(t);
618	<	throw afe;
619	<	}
956	>	else
957	>	throw new AssertionError("unexpected exception: " + t, t);
958		}
959
960		/**
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.
963	>	* until time elapses.  Ensures that the given time, as measured
964	>	* by System.nanoTime(), has elapsed.
965		*/
966		static void delay(long millis) throws InterruptedException {
967	<	long startTime = System.nanoTime();
968	<	long ns = millis * 1000 * 1000;
969	<	for (;;) {
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	<	long d = ns - (System.nanoTime() - startTime);
975	<	if (d > 0L)
976	<	millis = d / (1000 * 1000);
977	<	else
978	<	break;
974	>	nanos = wakeupTime - System.nanoTime();
975	>	millis = nanos / (1000 * 1000);
976	>	} while (nanos >= 0L);
977	>	}
978	>
979	>	/**
980	>	* Allows use of try-with-resources with per-test thread pools.
981	>	*/
982	>	class PoolCleaner implements AutoCloseable {
983	>	private final ExecutorService pool;
984	>	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
985	>	public void close() { joinPool(pool); }
986	>	}
987	>
988	>	/**
989	>	* An extension of PoolCleaner that has an action to release the pool.
990	>	*/
991	>	class PoolCleanerWithReleaser extends PoolCleaner {
992	>	private final Runnable releaser;
993	>	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
994	>	super(pool);
995	>	this.releaser = releaser;
996		}
997	+	public void close() {
998	+	try {
999	+	releaser.run();
1000	+	} finally {
1001	+	super.close();
1002	+	}
1003	+	}
1004	+	}
1005	+
1006	+	PoolCleaner cleaner(ExecutorService pool) {
1007	+	return new PoolCleaner(pool);
1008	+	}
1009	+
1010	+	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
1011	+	return new PoolCleanerWithReleaser(pool, releaser);
1012	+	}
1013	+
1014	+	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
1015	+	return new PoolCleanerWithReleaser(pool, releaser(latch));
1016	+	}
1017	+
1018	+	Runnable releaser(final CountDownLatch latch) {
1019	+	return new Runnable() { public void run() {
1020	+	do { latch.countDown(); }
1021	+	while (latch.getCount() > 0);
1022	+	}};
1023	+	}
1024	+
1025	+	PoolCleaner cleaner(ExecutorService pool, AtomicBoolean flag) {
1026	+	return new PoolCleanerWithReleaser(pool, releaser(flag));
1027	+	}
1028	+
1029	+	Runnable releaser(final AtomicBoolean flag) {
1030	+	return new Runnable() { public void run() { flag.set(true); }};
1031		}
1032
1033		/**
1034		* Waits out termination of a thread pool or fails doing so.
1035		*/
1036	<	void joinPool(ExecutorService exec) {
1036	>	void joinPool(ExecutorService pool) {
1037		try {
1038	<	exec.shutdown();
1039	<	if (!exec.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS))
1040	<	fail("ExecutorService " + exec +
1041	<	" did not terminate in a timely manner");
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	<	* A debugging tool to print all stack traces, as jstack does.
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	<	static void printAllStackTraces() {
663	<	for (ThreadInfo info :
664	<	ManagementFactory.getThreadMXBean()
665	<	.dumpAllThreads(true, true))
666	<	System.err.print(info);
667	<	}
1061	>	interface Action { public void run() throws Throwable; }
1062
1063		/**
1064	<	* Checks that thread does not terminate within the default
1065	<	* millisecond delay of {@code timeoutMillis()}.
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 assertThreadStaysAlive(Thread thread) {
1069	<	assertThreadStaysAlive(thread, timeoutMillis());
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	<	* Checks that thread does not terminate within the given millisecond delay.
1087	>	* A debugging tool to print stack traces of most threads, as jstack does.
1088	>	* Uninteresting threads are filtered out.
1089		*/
1090	<	void assertThreadStaysAlive(Thread thread, long millis) {
1091	<	try {
1092	<	// No need to optimize the failing case via Thread.join.
1093	<	delay(millis);
1094	<	assertTrue(thread.isAlive());
1095	<	} catch (InterruptedException ie) {
1096	<	fail("Unexpected InterruptedException");
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		}
688	–	}
1099
1100	<	/**
1101	<	* Checks that the threads do not terminate within the default
1102	<	* millisecond delay of {@code timeoutMillis()}.
1103	<	*/
1104	<	void assertThreadsStayAlive(Thread... threads) {
1105	<	assertThreadsStayAlive(timeoutMillis(), threads);
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 the threads do not terminate within the given millisecond delay.
1125	>	* Checks that thread eventually enters the expected blocked thread state.
1126		*/
1127	<	void assertThreadsStayAlive(long millis, Thread... threads) {
1128	<	try {
1129	<	// No need to optimize the failing case via Thread.join.
1130	<	delay(millis);
1131	<	for (Thread thread : threads)
1132	<	assertTrue(thread.isAlive());
1133	<	} catch (InterruptedException ie) {
1134	<	fail("Unexpected InterruptedException");
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		/**
#	Line 726 | Line 1158 | public class JSR166TestCase extends Test
1158		future.get(timeoutMillis, MILLISECONDS);
1159		shouldThrow();
1160		} catch (TimeoutException success) {
1161	<	} catch (Exception e) {
1162	<	threadUnexpectedException(e);
1161	>	} catch (Exception fail) {
1162	>	threadUnexpectedException(fail);
1163		} finally { future.cancel(true); }
1164		assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
1165		}
#	Line 747 | Line 1179 | public class JSR166TestCase extends Test
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.
1189		*/
1190		public static final int SIZE = 20;
#	Line 850 | Line 1288 | public class JSR166TestCase extends Test
1288		}
1289		public void refresh() {}
1290		public String toString() {
1291	<	List<Permission> ps = new ArrayList<Permission>();
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;
#	Line 878 | Line 1316 | public class JSR166TestCase extends Test
1316
1317		/**
1318		* Sleeps until the given time has elapsed.
1319	<	* Throws AssertionFailedError if interrupted.
1319	>	* Throws AssertionError if interrupted.
1320		*/
1321	<	void sleep(long millis) {
1321	>	static void sleep(long millis) {
1322		try {
1323		delay(millis);
1324	<	} catch (InterruptedException ie) {
1325	<	AssertionFailedError afe =
888	<	new AssertionFailedError("Unexpected InterruptedException");
889	<	afe.initCause(ie);
890	<	throw afe;
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 waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1335	<	long startTime = System.nanoTime();
1336	<	for (;;) {
1337	<	Thread.State s = thread.getState();
1338	<	if (s == Thread.State.BLOCKED ||
1339	<	s == Thread.State.WAITING ||
1340	<	s == Thread.State.TIMED_WAITING)
1341	<	return;
1342	<	else if (s == Thread.State.TERMINATED)
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	<	threadAssertTrue(thread.isAlive());
1353	<	return;
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	<	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
1366	<	* state: BLOCKED, WAITING, or TIMED_WAITING.
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);
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		/**
#	Line 930 | Line 1410 | public class JSR166TestCase extends Test
1410		return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1411		}
1412
933	–	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
934	–	//         long startTime = System.nanoTime();
935	–	//         try {
936	–	//             r.run();
937	–	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
938	–	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
939	–	//             throw new AssertionFailedError("did not return promptly");
940	–	//     }
941	–
942	–	//     void assertTerminatesPromptly(Runnable r) {
943	–	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
944	–	//     }
945	–
1413		/**
1414		* Checks that timed f.get() returns the expected value, and does not
1415		* wait for the timeout to elapse before returning.
1416		*/
1417		<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1418		long startTime = System.nanoTime();
1419	+	T actual = null;
1420		try {
1421	<	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1421	>	actual = f.get(timeoutMillis, MILLISECONDS);
1422		} catch (Throwable fail) { threadUnexpectedException(fail); }
1423	+	assertEquals(expectedValue, actual);
1424		if (millisElapsedSince(startTime) > timeoutMillis/2)
1425	<	throw new AssertionFailedError("timed get did not return promptly");
1425	>	throw new AssertionError("timed get did not return promptly");
1426		}
1427
1428		<T> void checkTimedGet(Future<T> f, T expectedValue) {
#	Line 975 | Line 1444 | public class JSR166TestCase extends Test
1444		* to terminate (using {@link Thread#join(long)}), else interrupts
1445		* the thread (in the hope that it may terminate later) and fails.
1446		*/
1447	<	void awaitTermination(Thread t, long timeoutMillis) {
1447	>	void awaitTermination(Thread thread, long timeoutMillis) {
1448		try {
1449	<	t.join(timeoutMillis);
1450	<	} catch (InterruptedException ie) {
1451	<	threadUnexpectedException(ie);
1452	<	} finally {
1453	<	if (t.getState() != Thread.State.TERMINATED) {
1454	<	t.interrupt();
1455	<	fail("Test timed out");
1449	>	thread.join(timeoutMillis);
1450	>	} catch (InterruptedException fail) {
1451	>	threadUnexpectedException(fail);
1452	>	}
1453	>	if (thread.getState() != Thread.State.TERMINATED) {
1454	>	String detail = String.format(
1455	>	"timed out waiting for thread to terminate, thread=%s, state=%s" ,
1456	>	thread, thread.getState());
1457	>	try {
1458	>	threadFail(detail);
1459	>	} finally {
1460	>	// Interrupt thread __after__ having reported its stack trace
1461	>	thread.interrupt();
1462		}
1463		}
1464		}
#	Line 1005 | Line 1480 | public class JSR166TestCase extends Test
1480		public final void run() {
1481		try {
1482		realRun();
1483	<	} catch (Throwable t) {
1484	<	threadUnexpectedException(t);
1010	<	}
1011	<	}
1012	<	}
1013	<
1014	<	public abstract class RunnableShouldThrow implements Runnable {
1015	<	protected abstract void realRun() throws Throwable;
1016	<
1017	<	final Class<?> exceptionClass;
1018	<
1019	<	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
1020	<	this.exceptionClass = exceptionClass;
1021	<	}
1022	<
1023	<	public final void run() {
1024	<	try {
1025	<	realRun();
1026	<	threadShouldThrow(exceptionClass.getSimpleName());
1027	<	} catch (Throwable t) {
1028	<	if (! exceptionClass.isInstance(t))
1029	<	threadUnexpectedException(t);
1483	>	} catch (Throwable fail) {
1484	>	threadUnexpectedException(fail);
1485		}
1486		}
1487		}
#	Line 1043 | Line 1498 | public class JSR166TestCase extends Test
1498		public final void run() {
1499		try {
1500		realRun();
1046	–	threadShouldThrow(exceptionClass.getSimpleName());
1501		} catch (Throwable t) {
1502		if (! exceptionClass.isInstance(t))
1503		threadUnexpectedException(t);
1504	+	return;
1505		}
1506	+	threadShouldThrow(exceptionClass.getSimpleName());
1507		}
1508		}
1509
#	Line 1057 | Line 1513 | public class JSR166TestCase extends Test
1513		public final void run() {
1514		try {
1515		realRun();
1060	–	threadShouldThrow("InterruptedException");
1516		} catch (InterruptedException success) {
1517		threadAssertFalse(Thread.interrupted());
1518	<	} catch (Throwable t) {
1519	<	threadUnexpectedException(t);
1518	>	return;
1519	>	} catch (Throwable fail) {
1520	>	threadUnexpectedException(fail);
1521		}
1522	+	threadShouldThrow("InterruptedException");
1523		}
1524		}
1525
#	Line 1072 | Line 1529 | public class JSR166TestCase extends Test
1529		public final T call() {
1530		try {
1531		return realCall();
1532	<	} catch (Throwable t) {
1533	<	threadUnexpectedException(t);
1077	<	return null;
1078	<	}
1079	<	}
1080	<	}
1081	<
1082	<	public abstract class CheckedInterruptedCallable<T>
1083	<	implements Callable<T> {
1084	<	protected abstract T realCall() throws Throwable;
1085	<
1086	<	public final T call() {
1087	<	try {
1088	<	T result = realCall();
1089	<	threadShouldThrow("InterruptedException");
1090	<	return result;
1091	<	} catch (InterruptedException success) {
1092	<	threadAssertFalse(Thread.interrupted());
1093	<	} catch (Throwable t) {
1094	<	threadUnexpectedException(t);
1532	>	} catch (Throwable fail) {
1533	>	threadUnexpectedException(fail);
1534		}
1535	<	return null;
1535	>	throw new AssertionError("unreached");
1536		}
1537		}
1538
#	Line 1108 | Line 1547 | public class JSR166TestCase extends Test
1547		public static final String TEST_STRING = "a test string";
1548
1549		public static class StringTask implements Callable<String> {
1550	<	public String call() { return TEST_STRING; }
1550	>	final String value;
1551	>	public StringTask() { this(TEST_STRING); }
1552	>	public StringTask(String value) { this.value = value; }
1553	>	public String call() { return value; }
1554		}
1555
1556		public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
#	Line 1121 | Line 1563 | public class JSR166TestCase extends Test
1563		}};
1564		}
1565
1566	<	public Runnable awaiter(final CountDownLatch latch) {
1566	>	public Runnable countDowner(final CountDownLatch latch) {
1567		return new CheckedRunnable() {
1568		public void realRun() throws InterruptedException {
1569	<	await(latch);
1569	>	latch.countDown();
1570		}};
1571		}
1572
1573	+	class LatchAwaiter extends CheckedRunnable {
1574	+	static final int NEW = 0;
1575	+	static final int RUNNING = 1;
1576	+	static final int DONE = 2;
1577	+	final CountDownLatch latch;
1578	+	int state = NEW;
1579	+	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1580	+	public void realRun() throws InterruptedException {
1581	+	state = 1;
1582	+	await(latch);
1583	+	state = 2;
1584	+	}
1585	+	}
1586	+
1587	+	public LatchAwaiter awaiter(CountDownLatch latch) {
1588	+	return new LatchAwaiter(latch);
1589	+	}
1590	+
1591	+	public void await(CountDownLatch latch, long timeoutMillis) {
1592	+	boolean timedOut = false;
1593	+	try {
1594	+	timedOut = !latch.await(timeoutMillis, MILLISECONDS);
1595	+	} catch (Throwable fail) {
1596	+	threadUnexpectedException(fail);
1597	+	}
1598	+	if (timedOut)
1599	+	fail("timed out waiting for CountDownLatch for "
1600	+	+ (timeoutMillis/1000) + " sec");
1601	+	}
1602	+
1603		public void await(CountDownLatch latch) {
1604	+	await(latch, LONG_DELAY_MS);
1605	+	}
1606	+
1607	+	public void await(Semaphore semaphore) {
1608	+	boolean timedOut = false;
1609		try {
1610	<	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1611	<	} catch (Throwable t) {
1612	<	threadUnexpectedException(t);
1610	>	timedOut = !semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS);
1611	>	} catch (Throwable fail) {
1612	>	threadUnexpectedException(fail);
1613		}
1614	+	if (timedOut)
1615	+	fail("timed out waiting for Semaphore for "
1616	+	+ (LONG_DELAY_MS/1000) + " sec");
1617		}
1618
1619	<	public void await(Semaphore semaphore) {
1619	>	public void await(CyclicBarrier barrier) {
1620		try {
1621	<	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1622	<	} catch (Throwable t) {
1623	<	threadUnexpectedException(t);
1621	>	barrier.await(LONG_DELAY_MS, MILLISECONDS);
1622	>	} catch (Throwable fail) {
1623	>	threadUnexpectedException(fail);
1624		}
1625		}
1626
#	Line 1158 | Line 1638 | public class JSR166TestCase extends Test
1638		//         long startTime = System.nanoTime();
1639		//         while (!flag.get()) {
1640		//             if (millisElapsedSince(startTime) > timeoutMillis)
1641	<	//                 throw new AssertionFailedError("timed out");
1641	>	//                 throw new AssertionError("timed out");
1642		//             Thread.yield();
1643		//         }
1644		//     }
#	Line 1167 | Line 1647 | public class JSR166TestCase extends Test
1647		public String call() { throw new NullPointerException(); }
1648		}
1649
1170	–	public static class CallableOne implements Callable<Integer> {
1171	–	public Integer call() { return one; }
1172	–	}
1173	–
1174	–	public class ShortRunnable extends CheckedRunnable {
1175	–	protected void realRun() throws Throwable {
1176	–	delay(SHORT_DELAY_MS);
1177	–	}
1178	–	}
1179	–
1180	–	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1181	–	protected void realRun() throws InterruptedException {
1182	–	delay(SHORT_DELAY_MS);
1183	–	}
1184	–	}
1185	–
1186	–	public class SmallRunnable extends CheckedRunnable {
1187	–	protected void realRun() throws Throwable {
1188	–	delay(SMALL_DELAY_MS);
1189	–	}
1190	–	}
1191	–
1192	–	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1193	–	protected void realRun() {
1194	–	try {
1195	–	delay(SMALL_DELAY_MS);
1196	–	} catch (InterruptedException ok) {}
1197	–	}
1198	–	}
1199	–
1200	–	public class SmallCallable extends CheckedCallable {
1201	–	protected Object realCall() throws InterruptedException {
1202	–	delay(SMALL_DELAY_MS);
1203	–	return Boolean.TRUE;
1204	–	}
1205	–	}
1206	–
1207	–	public class MediumRunnable extends CheckedRunnable {
1208	–	protected void realRun() throws Throwable {
1209	–	delay(MEDIUM_DELAY_MS);
1210	–	}
1211	–	}
1212	–
1213	–	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1214	–	protected void realRun() throws InterruptedException {
1215	–	delay(MEDIUM_DELAY_MS);
1216	–	}
1217	–	}
1218	–
1650		public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1651		return new CheckedRunnable() {
1652		protected void realRun() {
#	Line 1225 | Line 1656 | public class JSR166TestCase extends Test
1656		}};
1657		}
1658
1228	–	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1229	–	protected void realRun() {
1230	–	try {
1231	–	delay(MEDIUM_DELAY_MS);
1232	–	} catch (InterruptedException ok) {}
1233	–	}
1234	–	}
1235	–
1236	–	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1237	–	protected void realRun() {
1238	–	try {
1239	–	delay(LONG_DELAY_MS);
1240	–	} catch (InterruptedException ok) {}
1241	–	}
1242	–	}
1243	–
1659		/**
1660		* For use as ThreadFactory in constructors
1661		*/
#	Line 1254 | Line 1669 | public class JSR166TestCase extends Test
1669		boolean isDone();
1670		}
1671
1257	–	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1258	–	return new TrackedRunnable() {
1259	–	private volatile boolean done = false;
1260	–	public boolean isDone() { return done; }
1261	–	public void run() {
1262	–	try {
1263	–	delay(timeoutMillis);
1264	–	done = true;
1265	–	} catch (InterruptedException ok) {}
1266	–	}
1267	–	};
1268	–	}
1269	–
1270	–	public static class TrackedShortRunnable implements Runnable {
1271	–	public volatile boolean done = false;
1272	–	public void run() {
1273	–	try {
1274	–	delay(SHORT_DELAY_MS);
1275	–	done = true;
1276	–	} catch (InterruptedException ok) {}
1277	–	}
1278	–	}
1279	–
1280	–	public static class TrackedSmallRunnable implements Runnable {
1281	–	public volatile boolean done = false;
1282	–	public void run() {
1283	–	try {
1284	–	delay(SMALL_DELAY_MS);
1285	–	done = true;
1286	–	} catch (InterruptedException ok) {}
1287	–	}
1288	–	}
1289	–
1290	–	public static class TrackedMediumRunnable implements Runnable {
1291	–	public volatile boolean done = false;
1292	–	public void run() {
1293	–	try {
1294	–	delay(MEDIUM_DELAY_MS);
1295	–	done = true;
1296	–	} catch (InterruptedException ok) {}
1297	–	}
1298	–	}
1299	–
1300	–	public static class TrackedLongRunnable implements Runnable {
1301	–	public volatile boolean done = false;
1302	–	public void run() {
1303	–	try {
1304	–	delay(LONG_DELAY_MS);
1305	–	done = true;
1306	–	} catch (InterruptedException ok) {}
1307	–	}
1308	–	}
1309	–
1672		public static class TrackedNoOpRunnable implements Runnable {
1673		public volatile boolean done = false;
1674		public void run() {
#	Line 1314 | Line 1676 | public class JSR166TestCase extends Test
1676		}
1677		}
1678
1317	–	public static class TrackedCallable implements Callable {
1318	–	public volatile boolean done = false;
1319	–	public Object call() {
1320	–	try {
1321	–	delay(SMALL_DELAY_MS);
1322	–	done = true;
1323	–	} catch (InterruptedException ok) {}
1324	–	return Boolean.TRUE;
1325	–	}
1326	–	}
1327	–
1679		/**
1680		* Analog of CheckedRunnable for RecursiveAction
1681		*/
#	Line 1334 | Line 1685 | public class JSR166TestCase extends Test
1685		@Override protected final void compute() {
1686		try {
1687		realCompute();
1688	<	} catch (Throwable t) {
1689	<	threadUnexpectedException(t);
1688	>	} catch (Throwable fail) {
1689	>	threadUnexpectedException(fail);
1690		}
1691		}
1692		}
#	Line 1349 | Line 1700 | public class JSR166TestCase extends Test
1700		@Override protected final T compute() {
1701		try {
1702		return realCompute();
1703	<	} catch (Throwable t) {
1704	<	threadUnexpectedException(t);
1354	<	return null;
1703	>	} catch (Throwable fail) {
1704	>	threadUnexpectedException(fail);
1705		}
1706	+	throw new AssertionError("unreached");
1707		}
1708		}
1709
#	Line 1366 | Line 1717 | public class JSR166TestCase extends Test
1717
1718		/**
1719		* A CyclicBarrier that uses timed await and fails with
1720	<	* AssertionFailedErrors instead of throwing checked exceptions.
1720	>	* AssertionErrors instead of throwing checked exceptions.
1721		*/
1722	<	public class CheckedBarrier extends CyclicBarrier {
1722	>	public static class CheckedBarrier extends CyclicBarrier {
1723		public CheckedBarrier(int parties) { super(parties); }
1724
1725		public int await() {
1726		try {
1727		return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1728	<	} catch (TimeoutException e) {
1729	<	throw new AssertionFailedError("timed out");
1730	<	} catch (Exception e) {
1731	<	AssertionFailedError afe =
1381	<	new AssertionFailedError("Unexpected exception: " + e);
1382	<	afe.initCause(e);
1383	<	throw afe;
1728	>	} catch (TimeoutException timedOut) {
1729	>	throw new AssertionError("timed out");
1730	>	} catch (Exception fail) {
1731	>	throw new AssertionError("Unexpected exception: " + fail, fail);
1732		}
1733		}
1734		}
#	Line 1391 | Line 1739 | public class JSR166TestCase extends Test
1739		assertEquals(0, q.size());
1740		assertNull(q.peek());
1741		assertNull(q.poll());
1742	<	assertNull(q.poll(0, MILLISECONDS));
1742	>	assertNull(q.poll(randomExpiredTimeout(), randomTimeUnit()));
1743		assertEquals(q.toString(), "[]");
1744		assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1745		assertFalse(q.iterator().hasNext());
#	Line 1407 | Line 1755 | public class JSR166TestCase extends Test
1755		q.remove();
1756		shouldThrow();
1757		} catch (NoSuchElementException success) {}
1758	<	} catch (InterruptedException ie) {
1411	<	threadUnexpectedException(ie);
1412	<	}
1758	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1759		}
1760
1761		void assertSerialEquals(Object x, Object y) {
#	Line 1428 | Line 1774 | public class JSR166TestCase extends Test
1774		oos.flush();
1775		oos.close();
1776		return bos.toByteArray();
1777	<	} catch (Throwable t) {
1778	<	threadUnexpectedException(t);
1777	>	} catch (Throwable fail) {
1778	>	threadUnexpectedException(fail);
1779		return new byte[0];
1780		}
1781		}
1782
1783	+	void assertImmutable(Object o) {
1784	+	if (o instanceof Collection) {
1785	+	assertThrows(
1786	+	UnsupportedOperationException.class,
1787	+	() -> ((Collection) o).add(null));
1788	+	}
1789	+	}
1790	+
1791		@SuppressWarnings("unchecked")
1792		<T> T serialClone(T o) {
1793	+	T clone = null;
1794		try {
1795		ObjectInputStream ois = new ObjectInputStream
1796		(new ByteArrayInputStream(serialBytes(o)));
1797	<	T clone = (T) ois.readObject();
1798	<	assertSame(o.getClass(), clone.getClass());
1799	<	return clone;
1800	<	} catch (Throwable t) {
1801	<	threadUnexpectedException(t);
1797	>	clone = (T) ois.readObject();
1798	>	} catch (Throwable fail) {
1799	>	threadUnexpectedException(fail);
1800	>	}
1801	>	if (o == clone) assertImmutable(o);
1802	>	else assertSame(o.getClass(), clone.getClass());
1803	>	return clone;
1804	>	}
1805	>
1806	>	/**
1807	>	* A version of serialClone that leaves error handling (for
1808	>	* e.g. NotSerializableException) up to the caller.
1809	>	*/
1810	>	@SuppressWarnings("unchecked")
1811	>	<T> T serialClonePossiblyFailing(T o)
1812	>	throws ReflectiveOperationException, java.io.IOException {
1813	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1814	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1815	>	oos.writeObject(o);
1816	>	oos.flush();
1817	>	oos.close();
1818	>	ObjectInputStream ois = new ObjectInputStream
1819	>	(new ByteArrayInputStream(bos.toByteArray()));
1820	>	T clone = (T) ois.readObject();
1821	>	if (o == clone) assertImmutable(o);
1822	>	else assertSame(o.getClass(), clone.getClass());
1823	>	return clone;
1824	>	}
1825	>
1826	>	/**
1827	>	* If o implements Cloneable and has a public clone method,
1828	>	* returns a clone of o, else null.
1829	>	*/
1830	>	@SuppressWarnings("unchecked")
1831	>	<T> T cloneableClone(T o) {
1832	>	if (!(o instanceof Cloneable)) return null;
1833	>	final T clone;
1834	>	try {
1835	>	clone = (T) o.getClass().getMethod("clone").invoke(o);
1836	>	} catch (NoSuchMethodException ok) {
1837		return null;
1838	+	} catch (ReflectiveOperationException unexpected) {
1839	+	throw new Error(unexpected);
1840		}
1841	+	assertNotSame(o, clone); // not 100% guaranteed by spec
1842	+	assertSame(o.getClass(), clone.getClass());
1843	+	return clone;
1844		}
1845
1846		public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1847	<	Runnable... throwingActions) {
1848	<	for (Runnable throwingAction : throwingActions) {
1847	>	Action... throwingActions) {
1848	>	for (Action throwingAction : throwingActions) {
1849		boolean threw = false;
1850		try { throwingAction.run(); }
1851		catch (Throwable t) {
1852		threw = true;
1853	<	if (!expectedExceptionClass.isInstance(t)) {
1854	<	AssertionFailedError afe =
1855	<	new AssertionFailedError
1856	<	("Expected " + expectedExceptionClass.getName() +
1857	<	", got " + t.getClass().getName());
1463	<	afe.initCause(t);
1464	<	threadUnexpectedException(afe);
1465	<	}
1853	>	if (!expectedExceptionClass.isInstance(t))
1854	>	throw new AssertionError(
1855	>	"Expected " + expectedExceptionClass.getName() +
1856	>	", got " + t.getClass().getName(),
1857	>	t);
1858		}
1859		if (!threw)
1860		shouldThrow(expectedExceptionClass.getName());
1861		}
1862		}
1863	+
1864	+	public void assertIteratorExhausted(Iterator<?> it) {
1865	+	try {
1866	+	it.next();
1867	+	shouldThrow();
1868	+	} catch (NoSuchElementException success) {}
1869	+	assertFalse(it.hasNext());
1870	+	}
1871	+
1872	+	public <T> Callable<T> callableThrowing(final Exception ex) {
1873	+	return new Callable<T>() { public T call() throws Exception { throw ex; }};
1874	+	}
1875	+
1876	+	public Runnable runnableThrowing(final RuntimeException ex) {
1877	+	return new Runnable() { public void run() { throw ex; }};
1878	+	}
1879	+
1880	+	/** A reusable thread pool to be shared by tests. */
1881	+	static final ExecutorService cachedThreadPool =
1882	+	new ThreadPoolExecutor(0, Integer.MAX_VALUE,
1883	+	1000L, MILLISECONDS,
1884	+	new SynchronousQueue<Runnable>());
1885	+
1886	+	static <T> void shuffle(T[] array) {
1887	+	Collections.shuffle(Arrays.asList(array), ThreadLocalRandom.current());
1888	+	}
1889	+
1890	+	/**
1891	+	* Returns the same String as would be returned by {@link
1892	+	* Object#toString}, whether or not the given object's class
1893	+	* overrides toString().
1894	+	*
1895	+	* @see System#identityHashCode
1896	+	*/
1897	+	static String identityString(Object x) {
1898	+	return x.getClass().getName()
1899	+	+ "@" + Integer.toHexString(System.identityHashCode(x));
1900	+	}
1901	+
1902	+	// --- Shared assertions for Executor tests ---
1903	+
1904	+	/**
1905	+	* Returns maximum number of tasks that can be submitted to given
1906	+	* pool (with bounded queue) before saturation (when submission
1907	+	* throws RejectedExecutionException).
1908	+	*/
1909	+	static final int saturatedSize(ThreadPoolExecutor pool) {
1910	+	BlockingQueue<Runnable> q = pool.getQueue();
1911	+	return pool.getMaximumPoolSize() + q.size() + q.remainingCapacity();
1912	+	}
1913	+
1914	+	@SuppressWarnings("FutureReturnValueIgnored")
1915	+	void assertNullTaskSubmissionThrowsNullPointerException(Executor e) {
1916	+	try {
1917	+	e.execute((Runnable) null);
1918	+	shouldThrow();
1919	+	} catch (NullPointerException success) {}
1920	+
1921	+	if (! (e instanceof ExecutorService)) return;
1922	+	ExecutorService es = (ExecutorService) e;
1923	+	try {
1924	+	es.submit((Runnable) null);
1925	+	shouldThrow();
1926	+	} catch (NullPointerException success) {}
1927	+	try {
1928	+	es.submit((Runnable) null, Boolean.TRUE);
1929	+	shouldThrow();
1930	+	} catch (NullPointerException success) {}
1931	+	try {
1932	+	es.submit((Callable) null);
1933	+	shouldThrow();
1934	+	} catch (NullPointerException success) {}
1935	+
1936	+	if (! (e instanceof ScheduledExecutorService)) return;
1937	+	ScheduledExecutorService ses = (ScheduledExecutorService) e;
1938	+	try {
1939	+	ses.schedule((Runnable) null,
1940	+	randomTimeout(), randomTimeUnit());
1941	+	shouldThrow();
1942	+	} catch (NullPointerException success) {}
1943	+	try {
1944	+	ses.schedule((Callable) null,
1945	+	randomTimeout(), randomTimeUnit());
1946	+	shouldThrow();
1947	+	} catch (NullPointerException success) {}
1948	+	try {
1949	+	ses.scheduleAtFixedRate((Runnable) null,
1950	+	randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
1951	+	shouldThrow();
1952	+	} catch (NullPointerException success) {}
1953	+	try {
1954	+	ses.scheduleWithFixedDelay((Runnable) null,
1955	+	randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
1956	+	shouldThrow();
1957	+	} catch (NullPointerException success) {}
1958	+	}
1959	+
1960	+	void setRejectedExecutionHandler(
1961	+	ThreadPoolExecutor p, RejectedExecutionHandler handler) {
1962	+	p.setRejectedExecutionHandler(handler);
1963	+	assertSame(handler, p.getRejectedExecutionHandler());
1964	+	}
1965	+
1966	+	void assertTaskSubmissionsAreRejected(ThreadPoolExecutor p) {
1967	+	final RejectedExecutionHandler savedHandler = p.getRejectedExecutionHandler();
1968	+	final long savedTaskCount = p.getTaskCount();
1969	+	final long savedCompletedTaskCount = p.getCompletedTaskCount();
1970	+	final int savedQueueSize = p.getQueue().size();
1971	+	final boolean stock = (p.getClass().getClassLoader() == null);
1972	+
1973	+	Runnable r = () -> {};
1974	+	Callable<Boolean> c = () -> Boolean.TRUE;
1975	+
1976	+	class Recorder implements RejectedExecutionHandler {
1977	+	public volatile Runnable r = null;
1978	+	public volatile ThreadPoolExecutor p = null;
1979	+	public void reset() { r = null; p = null; }
1980	+	public void rejectedExecution(Runnable r, ThreadPoolExecutor p) {
1981	+	assertNull(this.r);
1982	+	assertNull(this.p);
1983	+	this.r = r;
1984	+	this.p = p;
1985	+	}
1986	+	}
1987	+
1988	+	// check custom handler is invoked exactly once per task
1989	+	Recorder recorder = new Recorder();
1990	+	setRejectedExecutionHandler(p, recorder);
1991	+	for (int i = 2; i--> 0; ) {
1992	+	recorder.reset();
1993	+	p.execute(r);
1994	+	if (stock && p.getClass() == ThreadPoolExecutor.class)
1995	+	assertSame(r, recorder.r);
1996	+	assertSame(p, recorder.p);
1997	+
1998	+	recorder.reset();
1999	+	assertFalse(p.submit(r).isDone());
2000	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2001	+	assertSame(p, recorder.p);
2002	+
2003	+	recorder.reset();
2004	+	assertFalse(p.submit(r, Boolean.TRUE).isDone());
2005	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2006	+	assertSame(p, recorder.p);
2007	+
2008	+	recorder.reset();
2009	+	assertFalse(p.submit(c).isDone());
2010	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2011	+	assertSame(p, recorder.p);
2012	+
2013	+	if (p instanceof ScheduledExecutorService) {
2014	+	ScheduledExecutorService s = (ScheduledExecutorService) p;
2015	+	ScheduledFuture<?> future;
2016	+
2017	+	recorder.reset();
2018	+	future = s.schedule(r, randomTimeout(), randomTimeUnit());
2019	+	assertFalse(future.isDone());
2020	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2021	+	assertSame(p, recorder.p);
2022	+
2023	+	recorder.reset();
2024	+	future = s.schedule(c, randomTimeout(), randomTimeUnit());
2025	+	assertFalse(future.isDone());
2026	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2027	+	assertSame(p, recorder.p);
2028	+
2029	+	recorder.reset();
2030	+	future = s.scheduleAtFixedRate(r, randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2031	+	assertFalse(future.isDone());
2032	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2033	+	assertSame(p, recorder.p);
2034	+
2035	+	recorder.reset();
2036	+	future = s.scheduleWithFixedDelay(r, randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2037	+	assertFalse(future.isDone());
2038	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2039	+	assertSame(p, recorder.p);
2040	+	}
2041	+	}
2042	+
2043	+	// Checking our custom handler above should be sufficient, but
2044	+	// we add some integration tests of standard handlers.
2045	+	final AtomicReference<Thread> thread = new AtomicReference<>();
2046	+	final Runnable setThread = () -> thread.set(Thread.currentThread());
2047	+
2048	+	setRejectedExecutionHandler(p, new ThreadPoolExecutor.AbortPolicy());
2049	+	try {
2050	+	p.execute(setThread);
2051	+	shouldThrow();
2052	+	} catch (RejectedExecutionException success) {}
2053	+	assertNull(thread.get());
2054	+
2055	+	setRejectedExecutionHandler(p, new ThreadPoolExecutor.DiscardPolicy());
2056	+	p.execute(setThread);
2057	+	assertNull(thread.get());
2058	+
2059	+	setRejectedExecutionHandler(p, new ThreadPoolExecutor.CallerRunsPolicy());
2060	+	p.execute(setThread);
2061	+	if (p.isShutdown())
2062	+	assertNull(thread.get());
2063	+	else
2064	+	assertSame(Thread.currentThread(), thread.get());
2065	+
2066	+	setRejectedExecutionHandler(p, savedHandler);
2067	+
2068	+	// check that pool was not perturbed by handlers
2069	+	assertEquals(savedTaskCount, p.getTaskCount());
2070	+	assertEquals(savedCompletedTaskCount, p.getCompletedTaskCount());
2071	+	assertEquals(savedQueueSize, p.getQueue().size());
2072	+	}
2073	+
2074	+	void assertCollectionsEquals(Collection<?> x, Collection<?> y) {
2075	+	assertEquals(x, y);
2076	+	assertEquals(y, x);
2077	+	assertEquals(x.isEmpty(), y.isEmpty());
2078	+	assertEquals(x.size(), y.size());
2079	+	if (x instanceof List) {
2080	+	assertEquals(x.toString(), y.toString());
2081	+	}
2082	+	if (x instanceof List || x instanceof Set) {
2083	+	assertEquals(x.hashCode(), y.hashCode());
2084	+	}
2085	+	if (x instanceof List || x instanceof Deque) {
2086	+	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
2087	+	assertTrue(Arrays.equals(x.toArray(new Object[0]),
2088	+	y.toArray(new Object[0])));
2089	+	}
2090	+	}
2091	+
2092	+	/**
2093	+	* A weaker form of assertCollectionsEquals which does not insist
2094	+	* that the two collections satisfy Object#equals(Object), since
2095	+	* they may use identity semantics as Deques do.
2096	+	*/
2097	+	void assertCollectionsEquivalent(Collection<?> x, Collection<?> y) {
2098	+	if (x instanceof List || x instanceof Set)
2099	+	assertCollectionsEquals(x, y);
2100	+	else {
2101	+	assertEquals(x.isEmpty(), y.isEmpty());
2102	+	assertEquals(x.size(), y.size());
2103	+	assertEquals(new HashSet(x), new HashSet(y));
2104	+	if (x instanceof Deque) {
2105	+	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
2106	+	assertTrue(Arrays.equals(x.toArray(new Object[0]),
2107	+	y.toArray(new Object[0])));
2108	+	}
2109	+	}
2110	+	}
2111		}

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