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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.112 by jsr166, Fri Aug 16 07:07:01 2013 UTC vs.
Revision 1.217 by jsr166, Tue Jan 24 22:57:02 2017 UTC

#	Line 6 | Line 6
6		* Pat Fisher, Mike Judd.
7		*/
8
9	<	import junit.framework.*;
9	>	/*
10	>	* @test
11	>	* @summary JSR-166 tck tests (conformance testing mode)
12	>	* @build *
13	>	* @modules java.management
14	>	* @run junit/othervm/timeout=1000 JSR166TestCase
15	>	*/
16	>
17	>	/*
18	>	* @test
19	>	* @summary JSR-166 tck tests (whitebox tests allowed)
20	>	* @build *
21	>	* @modules java.base/java.util.concurrent:open
22	>	*          java.management
23	>	* @run junit/othervm/timeout=1000
24	>	*      -Djsr166.testImplementationDetails=true
25	>	*      JSR166TestCase
26	>	* @run junit/othervm/timeout=1000
27	>	*      -Djsr166.testImplementationDetails=true
28	>	*      -Djava.util.concurrent.ForkJoinPool.common.parallelism=0
29	>	*      JSR166TestCase
30	>	* @run junit/othervm/timeout=1000
31	>	*      -Djsr166.testImplementationDetails=true
32	>	*      -Djava.util.concurrent.ForkJoinPool.common.parallelism=1
33	>	*      -Djava.util.secureRandomSeed=true
34	>	*      JSR166TestCase
35	>	* @run junit/othervm/timeout=1000/policy=tck.policy
36	>	*      -Djsr166.testImplementationDetails=true
37	>	*      JSR166TestCase
38	>	*/
39	>
40	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
41	>	import static java.util.concurrent.TimeUnit.MINUTES;
42	>	import static java.util.concurrent.TimeUnit.NANOSECONDS;
43	>
44		import java.io.ByteArrayInputStream;
45		import java.io.ByteArrayOutputStream;
46		import java.io.ObjectInputStream;
47		import java.io.ObjectOutputStream;
48		import java.lang.management.ManagementFactory;
49		import java.lang.management.ThreadInfo;
50	+	import java.lang.management.ThreadMXBean;
51	+	import java.lang.reflect.Constructor;
52		import java.lang.reflect.Method;
53	+	import java.lang.reflect.Modifier;
54	+	import java.nio.file.Files;
55	+	import java.nio.file.Paths;
56	+	import java.security.CodeSource;
57	+	import java.security.Permission;
58	+	import java.security.PermissionCollection;
59	+	import java.security.Permissions;
60	+	import java.security.Policy;
61	+	import java.security.ProtectionDomain;
62	+	import java.security.SecurityPermission;
63		import java.util.ArrayList;
64		import java.util.Arrays;
65	+	import java.util.Collection;
66	+	import java.util.Collections;
67		import java.util.Date;
68		import java.util.Enumeration;
69	+	import java.util.Iterator;
70		import java.util.List;
71		import java.util.NoSuchElementException;
72		import java.util.PropertyPermission;
73	<	import java.util.concurrent.*;
73	>	import java.util.concurrent.BlockingQueue;
74	>	import java.util.concurrent.Callable;
75	>	import java.util.concurrent.CountDownLatch;
76	>	import java.util.concurrent.CyclicBarrier;
77	>	import java.util.concurrent.ExecutionException;
78	>	import java.util.concurrent.Executors;
79	>	import java.util.concurrent.ExecutorService;
80	>	import java.util.concurrent.ForkJoinPool;
81	>	import java.util.concurrent.Future;
82	>	import java.util.concurrent.RecursiveAction;
83	>	import java.util.concurrent.RecursiveTask;
84	>	import java.util.concurrent.RejectedExecutionHandler;
85	>	import java.util.concurrent.Semaphore;
86	>	import java.util.concurrent.SynchronousQueue;
87	>	import java.util.concurrent.ThreadFactory;
88	>	import java.util.concurrent.ThreadLocalRandom;
89	>	import java.util.concurrent.ThreadPoolExecutor;
90	>	import java.util.concurrent.TimeoutException;
91		import java.util.concurrent.atomic.AtomicBoolean;
92		import java.util.concurrent.atomic.AtomicReference;
93	<	import static java.util.concurrent.TimeUnit.MILLISECONDS;
94	<	import static java.util.concurrent.TimeUnit.NANOSECONDS;
95	<	import java.security.CodeSource;
96	<	import java.security.Permission;
97	<	import java.security.PermissionCollection;
98	<	import java.security.Permissions;
99	<	import java.security.Policy;
100	<	import java.security.ProtectionDomain;
35	<	import java.security.SecurityPermission;
93	>	import java.util.regex.Matcher;
94	>	import java.util.regex.Pattern;
95	>
96	>	import junit.framework.AssertionFailedError;
97	>	import junit.framework.Test;
98	>	import junit.framework.TestCase;
99	>	import junit.framework.TestResult;
100	>	import junit.framework.TestSuite;
101
102		/**
103		* Base class for JSR166 Junit TCK tests.  Defines some constants,
#	Line 44 | Line 109 | import java.security.SecurityPermission;
109		*
110		* <ol>
111		*
112	<	* <li> All assertions in code running in generated threads must use
112	>	* <li>All assertions in code running in generated threads must use
113		* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
114		* #threadAssertEquals}, or {@link #threadAssertNull}, (not
115		* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
116		* particularly recommended) for other code to use these forms too.
117		* Only the most typically used JUnit assertion methods are defined
118	<	* this way, but enough to live with.</li>
118	>	* this way, but enough to live with.
119		*
120	<	* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
120	>	* <li>If you override {@link #setUp} or {@link #tearDown}, make sure
121		* to invoke {@code super.setUp} and {@code super.tearDown} within
122		* them. These methods are used to clear and check for thread
123	<	* assertion failures.</li>
123	>	* assertion failures.
124		*
125		* <li>All delays and timeouts must use one of the constants {@code
126		* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
#	Line 66 | Line 131 | import java.security.SecurityPermission;
131		* is always discriminable as larger than SHORT and smaller than
132		* MEDIUM.  And so on. These constants are set to conservative values,
133		* but even so, if there is ever any doubt, they can all be increased
134	<	* in one spot to rerun tests on slower platforms.</li>
134	>	* in one spot to rerun tests on slower platforms.
135		*
136	<	* <li> All threads generated must be joined inside each test case
136	>	* <li>All threads generated must be joined inside each test case
137		* method (or {@code fail} to do so) before returning from the
138		* method. The {@code joinPool} method can be used to do this when
139	<	* using Executors.</li>
139	>	* using Executors.
140		*
141		* </ol>
142		*
143		* <p><b>Other notes</b>
144		* <ul>
145		*
146	<	* <li> Usually, there is one testcase method per JSR166 method
146	>	* <li>Usually, there is one testcase method per JSR166 method
147		* covering "normal" operation, and then as many exception-testing
148		* methods as there are exceptions the method can throw. Sometimes
149		* there are multiple tests per JSR166 method when the different
150		* "normal" behaviors differ significantly. And sometimes testcases
151	<	* cover multiple methods when they cannot be tested in
87	<	* isolation.</li>
151	>	* cover multiple methods when they cannot be tested in isolation.
152		*
153	<	* <li> The documentation style for testcases is to provide as javadoc
153	>	* <li>The documentation style for testcases is to provide as javadoc
154		* a simple sentence or two describing the property that the testcase
155		* method purports to test. The javadocs do not say anything about how
156	<	* the property is tested. To find out, read the code.</li>
156	>	* the property is tested. To find out, read the code.
157		*
158	<	* <li> These tests are "conformance tests", and do not attempt to
158	>	* <li>These tests are "conformance tests", and do not attempt to
159		* test throughput, latency, scalability or other performance factors
160		* (see the separate "jtreg" tests for a set intended to check these
161		* for the most central aspects of functionality.) So, most tests use
162		* the smallest sensible numbers of threads, collection sizes, etc
163	<	* needed to check basic conformance.</li>
163	>	* needed to check basic conformance.
164		*
165		* <li>The test classes currently do not declare inclusion in
166		* any particular package to simplify things for people integrating
167	<	* them in TCK test suites.</li>
167	>	* them in TCK test suites.
168		*
169	<	* <li> As a convenience, the {@code main} of this class (JSR166TestCase)
170	<	* runs all JSR166 unit tests.</li>
169	>	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
170	>	* runs all JSR166 unit tests.
171		*
172		* </ul>
173		*/
#	Line 115 | Line 179 | public class JSR166TestCase extends Test
179		Boolean.getBoolean("jsr166.expensiveTests");
180
181		/**
182	+	* If true, also run tests that are not part of the official tck
183	+	* because they test unspecified implementation details.
184	+	*/
185	+	protected static final boolean testImplementationDetails =
186	+	Boolean.getBoolean("jsr166.testImplementationDetails");
187	+
188	+	/**
189		* If true, report on stdout all "slow" tests, that is, ones that
190		* take more than profileThreshold milliseconds to execute.
191		*/
#	Line 134 | Line 205 | public class JSR166TestCase extends Test
205		private static final int runsPerTest =
206		Integer.getInteger("jsr166.runsPerTest", 1);
207
208	+	/**
209	+	* The number of repetitions of the test suite (for finding leaks?).
210	+	*/
211	+	private static final int suiteRuns =
212	+	Integer.getInteger("jsr166.suiteRuns", 1);
213	+
214	+	/**
215	+	* Returns the value of the system property, or NaN if not defined.
216	+	*/
217	+	private static float systemPropertyValue(String name) {
218	+	String floatString = System.getProperty(name);
219	+	if (floatString == null)
220	+	return Float.NaN;
221	+	try {
222	+	return Float.parseFloat(floatString);
223	+	} catch (NumberFormatException ex) {
224	+	throw new IllegalArgumentException(
225	+	String.format("Bad float value in system property %s=%s",
226	+	name, floatString));
227	+	}
228	+	}
229	+
230	+	/**
231	+	* The scaling factor to apply to standard delays used in tests.
232	+	* May be initialized from any of:
233	+	* - the "jsr166.delay.factor" system property
234	+	* - the "test.timeout.factor" system property (as used by jtreg)
235	+	*   See: http://openjdk.java.net/jtreg/tag-spec.html
236	+	* - hard-coded fuzz factor when using a known slowpoke VM
237	+	*/
238	+	private static final float delayFactor = delayFactor();
239	+
240	+	private static float delayFactor() {
241	+	float x;
242	+	if (!Float.isNaN(x = systemPropertyValue("jsr166.delay.factor")))
243	+	return x;
244	+	if (!Float.isNaN(x = systemPropertyValue("test.timeout.factor")))
245	+	return x;
246	+	String prop = System.getProperty("java.vm.version");
247	+	if (prop != null && prop.matches(".*debug.*"))
248	+	return 4.0f; // How much slower is fastdebug than product?!
249	+	return 1.0f;
250	+	}
251	+
252	+	public JSR166TestCase() { super(); }
253	+	public JSR166TestCase(String name) { super(name); }
254	+
255	+	/**
256	+	* A filter for tests to run, matching strings of the form
257	+	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
258	+	* Usefully combined with jsr166.runsPerTest.
259	+	*/
260	+	private static final Pattern methodFilter = methodFilter();
261	+
262	+	private static Pattern methodFilter() {
263	+	String regex = System.getProperty("jsr166.methodFilter");
264	+	return (regex == null) ? null : Pattern.compile(regex);
265	+	}
266	+
267	+	// Instrumentation to debug very rare, but very annoying hung test runs.
268	+	static volatile TestCase currentTestCase;
269	+	// static volatile int currentRun = 0;
270	+	static {
271	+	Runnable checkForWedgedTest = new Runnable() { public void run() {
272	+	// Avoid spurious reports with enormous runsPerTest.
273	+	// A single test case run should never take more than 1 second.
274	+	// But let's cap it at the high end too ...
275	+	final int timeoutMinutes =
276	+	Math.min(15, Math.max(runsPerTest / 60, 1));
277	+	for (TestCase lastTestCase = currentTestCase;;) {
278	+	try { MINUTES.sleep(timeoutMinutes); }
279	+	catch (InterruptedException unexpected) { break; }
280	+	if (lastTestCase == currentTestCase) {
281	+	System.err.printf(
282	+	"Looks like we're stuck running test: %s%n",
283	+	lastTestCase);
284	+	//                     System.err.printf(
285	+	//                         "Looks like we're stuck running test: %s (%d/%d)%n",
286	+	//                         lastTestCase, currentRun, runsPerTest);
287	+	//                     System.err.println("availableProcessors=" +
288	+	//                         Runtime.getRuntime().availableProcessors());
289	+	//                     System.err.printf("cpu model = %s%n", cpuModel());
290	+	dumpTestThreads();
291	+	// one stack dump is probably enough; more would be spam
292	+	break;
293	+	}
294	+	lastTestCase = currentTestCase;
295	+	}}};
296	+	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
297	+	thread.setDaemon(true);
298	+	thread.start();
299	+	}
300	+
301	+	//     public static String cpuModel() {
302	+	//         try {
303	+	//             Matcher matcher = Pattern.compile("model name\\s*: (.*)")
304	+	//                 .matcher(new String(
305	+	//                      Files.readAllBytes(Paths.get("/proc/cpuinfo")), "UTF-8"));
306	+	//             matcher.find();
307	+	//             return matcher.group(1);
308	+	//         } catch (Exception ex) { return null; }
309	+	//     }
310	+
311	+	public void runBare() throws Throwable {
312	+	currentTestCase = this;
313	+	if (methodFilter == null
314	+	|| methodFilter.matcher(toString()).find())
315	+	super.runBare();
316	+	}
317	+
318		protected void runTest() throws Throwable {
319		for (int i = 0; i < runsPerTest; i++) {
320	+	// currentRun = i;
321		if (profileTests)
322		runTestProfiled();
323		else
#	Line 144 | Line 326 | public class JSR166TestCase extends Test
326		}
327
328		protected void runTestProfiled() throws Throwable {
329	<	long t0 = System.nanoTime();
330	<	try {
329	>	for (int i = 0; i < 2; i++) {
330	>	long startTime = System.nanoTime();
331		super.runTest();
332	<	} finally {
333	<	long elapsedMillis =
334	<	(System.nanoTime() - t0) / (1000L * 1000L);
335	<	if (elapsedMillis >= profileThreshold)
332	>	long elapsedMillis = millisElapsedSince(startTime);
333	>	if (elapsedMillis < profileThreshold)
334	>	break;
335	>	// Never report first run of any test; treat it as a
336	>	// warmup run, notably to trigger all needed classloading,
337	>	if (i > 0)
338		System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
339		}
340		}
341
342		/**
343		* Runs all JSR166 unit tests using junit.textui.TestRunner.
160	–	* Optional command line arg provides the number of iterations to
161	–	* repeat running the tests.
344		*/
345		public static void main(String[] args) {
346	+	main(suite(), args);
347	+	}
348	+
349	+	static class PithyResultPrinter extends junit.textui.ResultPrinter {
350	+	PithyResultPrinter(java.io.PrintStream writer) { super(writer); }
351	+	long runTime;
352	+	public void startTest(Test test) {}
353	+	protected void printHeader(long runTime) {
354	+	this.runTime = runTime; // defer printing for later
355	+	}
356	+	protected void printFooter(TestResult result) {
357	+	if (result.wasSuccessful()) {
358	+	getWriter().println("OK (" + result.runCount() + " tests)"
359	+	+ "  Time: " + elapsedTimeAsString(runTime));
360	+	} else {
361	+	getWriter().println("Time: " + elapsedTimeAsString(runTime));
362	+	super.printFooter(result);
363	+	}
364	+	}
365	+	}
366	+
367	+	/**
368	+	* Returns a TestRunner that doesn't bother with unnecessary
369	+	* fluff, like printing a "." for each test case.
370	+	*/
371	+	static junit.textui.TestRunner newPithyTestRunner() {
372	+	junit.textui.TestRunner runner = new junit.textui.TestRunner();
373	+	runner.setPrinter(new PithyResultPrinter(System.out));
374	+	return runner;
375	+	}
376	+
377	+	/**
378	+	* Runs all unit tests in the given test suite.
379	+	* Actual behavior influenced by jsr166.* system properties.
380	+	*/
381	+	static void main(Test suite, String[] args) {
382		if (useSecurityManager) {
383		System.err.println("Setting a permissive security manager");
384		Policy.setPolicy(permissivePolicy());
385		System.setSecurityManager(new SecurityManager());
386		}
387	<	int iters = (args.length == 0) ? 1 : Integer.parseInt(args[0]);
388	<
389	<	Test s = suite();
390	<	for (int i = 0; i < iters; ++i) {
173	<	junit.textui.TestRunner.run(s);
387	>	for (int i = 0; i < suiteRuns; i++) {
388	>	TestResult result = newPithyTestRunner().doRun(suite);
389	>	if (!result.wasSuccessful())
390	>	System.exit(1);
391		System.gc();
392		System.runFinalization();
393		}
177	–	System.exit(0);
394		}
395
396		public static TestSuite newTestSuite(Object... suiteOrClasses) {
#	Line 205 | Line 421 | public class JSR166TestCase extends Test
421		}
422
423		public static final double JAVA_CLASS_VERSION;
424	+	public static final String JAVA_SPECIFICATION_VERSION;
425		static {
426		try {
427		JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
428		new java.security.PrivilegedAction<Double>() {
429		public Double run() {
430		return Double.valueOf(System.getProperty("java.class.version"));}});
431	+	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
432	+	new java.security.PrivilegedAction<String>() {
433	+	public String run() {
434	+	return System.getProperty("java.specification.version");}});
435		} catch (Throwable t) {
436		throw new Error(t);
437		}
#	Line 219 | Line 440 | public class JSR166TestCase extends Test
440		public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
441		public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
442		public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
443	+	public static boolean atLeastJava9() {
444	+	return JAVA_CLASS_VERSION >= 53.0
445	+	// As of 2015-09, java9 still uses 52.0 class file version
446	+	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?(9|[0-9][0-9])$");
447	+	}
448	+	public static boolean atLeastJava10() {
449	+	return JAVA_CLASS_VERSION >= 54.0
450	+	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?[0-9][0-9]$");
451	+	}
452
453		/**
454		* Collects all JSR166 unit tests as one suite.
#	Line 239 | Line 469 | public class JSR166TestCase extends Test
469		AbstractQueuedLongSynchronizerTest.suite(),
470		ArrayBlockingQueueTest.suite(),
471		ArrayDequeTest.suite(),
472	+	ArrayListTest.suite(),
473		AtomicBooleanTest.suite(),
474		AtomicIntegerArrayTest.suite(),
475		AtomicIntegerFieldUpdaterTest.suite(),
#	Line 261 | Line 492 | public class JSR166TestCase extends Test
492		CopyOnWriteArrayListTest.suite(),
493		CopyOnWriteArraySetTest.suite(),
494		CountDownLatchTest.suite(),
495	+	CountedCompleterTest.suite(),
496		CyclicBarrierTest.suite(),
497		DelayQueueTest.suite(),
498		EntryTest.suite(),
#	Line 289 | Line 521 | public class JSR166TestCase extends Test
521		TreeMapTest.suite(),
522		TreeSetTest.suite(),
523		TreeSubMapTest.suite(),
524	<	TreeSubSetTest.suite());
524	>	TreeSubSetTest.suite(),
525	>	VectorTest.suite());
526
527		// Java8+ test classes
528		if (atLeastJava8()) {
529		String[] java8TestClassNames = {
530	+	"ArrayDeque8Test",
531	+	"Atomic8Test",
532		"CompletableFutureTest",
533		"ConcurrentHashMap8Test",
534	<	"CountedCompleterTest",
534	>	"CountedCompleter8Test",
535		"DoubleAccumulatorTest",
536		"DoubleAdderTest",
537		"ForkJoinPool8Test",
538		"ForkJoinTask8Test",
539	+	"LinkedBlockingDeque8Test",
540	+	"LinkedBlockingQueue8Test",
541		"LongAccumulatorTest",
542		"LongAdderTest",
543		"SplittableRandomTest",
544		"StampedLockTest",
545	+	"SubmissionPublisherTest",
546		"ThreadLocalRandom8Test",
547	+	"TimeUnit8Test",
548		};
549		addNamedTestClasses(suite, java8TestClassNames);
550		}
551
552	+	// Java9+ test classes
553	+	if (atLeastJava9()) {
554	+	String[] java9TestClassNames = {
555	+	"AtomicBoolean9Test",
556	+	"AtomicInteger9Test",
557	+	"AtomicIntegerArray9Test",
558	+	"AtomicLong9Test",
559	+	"AtomicLongArray9Test",
560	+	"AtomicReference9Test",
561	+	"AtomicReferenceArray9Test",
562	+	"ExecutorCompletionService9Test",
563	+	};
564	+	addNamedTestClasses(suite, java9TestClassNames);
565	+	}
566	+
567		return suite;
568		}
569
570	+	/** Returns list of junit-style test method names in given class. */
571	+	public static ArrayList<String> testMethodNames(Class<?> testClass) {
572	+	Method[] methods = testClass.getDeclaredMethods();
573	+	ArrayList<String> names = new ArrayList<>(methods.length);
574	+	for (Method method : methods) {
575	+	if (method.getName().startsWith("test")
576	+	&& Modifier.isPublic(method.getModifiers())
577	+	// method.getParameterCount() requires jdk8+
578	+	&& method.getParameterTypes().length == 0) {
579	+	names.add(method.getName());
580	+	}
581	+	}
582	+	return names;
583	+	}
584	+
585	+	/**
586	+	* Returns junit-style testSuite for the given test class, but
587	+	* parameterized by passing extra data to each test.
588	+	*/
589	+	public static <ExtraData> Test parameterizedTestSuite
590	+	(Class<? extends JSR166TestCase> testClass,
591	+	Class<ExtraData> dataClass,
592	+	ExtraData data) {
593	+	try {
594	+	TestSuite suite = new TestSuite();
595	+	Constructor c =
596	+	testClass.getDeclaredConstructor(dataClass, String.class);
597	+	for (String methodName : testMethodNames(testClass))
598	+	suite.addTest((Test) c.newInstance(data, methodName));
599	+	return suite;
600	+	} catch (Exception e) {
601	+	throw new Error(e);
602	+	}
603	+	}
604	+
605	+	/**
606	+	* Returns junit-style testSuite for the jdk8 extension of the
607	+	* given test class, but parameterized by passing extra data to
608	+	* each test.  Uses reflection to allow compilation in jdk7.
609	+	*/
610	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
611	+	(Class<? extends JSR166TestCase> testClass,
612	+	Class<ExtraData> dataClass,
613	+	ExtraData data) {
614	+	if (atLeastJava8()) {
615	+	String name = testClass.getName();
616	+	String name8 = name.replaceAll("Test$", "8Test");
617	+	if (name.equals(name8)) throw new Error(name);
618	+	try {
619	+	return (Test)
620	+	Class.forName(name8)
621	+	.getMethod("testSuite", new Class[] { dataClass })
622	+	.invoke(null, data);
623	+	} catch (Exception e) {
624	+	throw new Error(e);
625	+	}
626	+	} else {
627	+	return new TestSuite();
628	+	}
629	+	}
630	+
631		// Delays for timing-dependent tests, in milliseconds.
632
633		public static long SHORT_DELAY_MS;
#	Line 321 | Line 636 | public class JSR166TestCase extends Test
636		public static long LONG_DELAY_MS;
637
638		/**
639	<	* Returns the shortest timed delay. This could
640	<	* be reimplemented to use for example a Property.
639	>	* Returns the shortest timed delay. This can be scaled up for
640	>	* slow machines using the jsr166.delay.factor system property,
641	>	* or via jtreg's -timeoutFactor: flag.
642	>	* http://openjdk.java.net/jtreg/command-help.html
643		*/
644		protected long getShortDelay() {
645	<	return 50;
645	>	return (long) (50 * delayFactor);
646		}
647
648		/**
#	Line 347 | Line 664 | public class JSR166TestCase extends Test
664		}
665
666		/**
667	<	* Returns a new Date instance representing a time delayMillis
668	<	* milliseconds in the future.
667	>	* Returns a new Date instance representing a time at least
668	>	* delayMillis milliseconds in the future.
669		*/
670		Date delayedDate(long delayMillis) {
671	<	return new Date(System.currentTimeMillis() + delayMillis);
671	>	// Add 1 because currentTimeMillis is known to round into the past.
672	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
673		}
674
675		/**
676		* The first exception encountered if any threadAssertXXX method fails.
677		*/
678		private final AtomicReference<Throwable> threadFailure
679	<	= new AtomicReference<Throwable>(null);
679	>	= new AtomicReference<>(null);
680
681		/**
682		* Records an exception so that it can be rethrown later in the test
#	Line 367 | Line 685 | public class JSR166TestCase extends Test
685		* the same test have no effect.
686		*/
687		public void threadRecordFailure(Throwable t) {
688	+	System.err.println(t);
689	+	dumpTestThreads();
690		threadFailure.compareAndSet(null, t);
691		}
692
#	Line 374 | Line 694 | public class JSR166TestCase extends Test
694		setDelays();
695		}
696
697	+	void tearDownFail(String format, Object... args) {
698	+	String msg = toString() + ": " + String.format(format, args);
699	+	System.err.println(msg);
700	+	dumpTestThreads();
701	+	throw new AssertionFailedError(msg);
702	+	}
703	+
704		/**
705		* Extra checks that get done for all test cases.
706		*
#	Line 401 | Line 728 | public class JSR166TestCase extends Test
728		}
729
730		if (Thread.interrupted())
731	<	throw new AssertionFailedError("interrupt status set in main thread");
731	>	tearDownFail("interrupt status set in main thread");
732
733		checkForkJoinPoolThreadLeaks();
734		}
735
736		/**
737	<	* Find missing try { ... } finally { joinPool(e); }
737	>	* Finds missing PoolCleaners
738		*/
739		void checkForkJoinPoolThreadLeaks() throws InterruptedException {
740	<	Thread[] survivors = new Thread[5];
740	>	Thread[] survivors = new Thread[7];
741		int count = Thread.enumerate(survivors);
742		for (int i = 0; i < count; i++) {
743		Thread thread = survivors[i];
#	Line 418 | Line 745 | public class JSR166TestCase extends Test
745		if (name.startsWith("ForkJoinPool-")) {
746		// give thread some time to terminate
747		thread.join(LONG_DELAY_MS);
748	<	if (!thread.isAlive()) continue;
749	<	thread.stop();
750	<	throw new AssertionFailedError
424	<	(String.format("Found leaked ForkJoinPool thread test=%s thread=%s%n",
425	<	toString(), name));
748	>	if (thread.isAlive())
749	>	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
750	>	thread);
751		}
752		}
753	+
754	+	if (!ForkJoinPool.commonPool()
755	+	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
756	+	tearDownFail("ForkJoin common pool thread stuck");
757		}
758
759		/**
#	Line 437 | Line 766 | public class JSR166TestCase extends Test
766		fail(reason);
767		} catch (AssertionFailedError t) {
768		threadRecordFailure(t);
769	<	fail(reason);
769	>	throw t;
770		}
771		}
772
#	Line 505 | Line 834 | public class JSR166TestCase extends Test
834		public void threadAssertEquals(Object x, Object y) {
835		try {
836		assertEquals(x, y);
837	<	} catch (AssertionFailedError t) {
838	<	threadRecordFailure(t);
839	<	throw t;
840	<	} catch (Throwable t) {
841	<	threadUnexpectedException(t);
837	>	} catch (AssertionFailedError fail) {
838	>	threadRecordFailure(fail);
839	>	throw fail;
840	>	} catch (Throwable fail) {
841	>	threadUnexpectedException(fail);
842		}
843		}
844
#	Line 521 | Line 850 | public class JSR166TestCase extends Test
850		public void threadAssertSame(Object x, Object y) {
851		try {
852		assertSame(x, y);
853	<	} catch (AssertionFailedError t) {
854	<	threadRecordFailure(t);
855	<	throw t;
853	>	} catch (AssertionFailedError fail) {
854	>	threadRecordFailure(fail);
855	>	throw fail;
856		}
857		}
858
#	Line 564 | Line 893 | public class JSR166TestCase extends Test
893		/**
894		* Delays, via Thread.sleep, for the given millisecond delay, but
895		* if the sleep is shorter than specified, may re-sleep or yield
896	<	* until time elapses.
896	>	* until time elapses.  Ensures that the given time, as measured
897	>	* by System.nanoTime(), has elapsed.
898		*/
899		static void delay(long millis) throws InterruptedException {
900	<	long startTime = System.nanoTime();
901	<	long ns = millis * 1000 * 1000;
902	<	for (;;) {
900	>	long nanos = millis * (1000 * 1000);
901	>	final long wakeupTime = System.nanoTime() + nanos;
902	>	do {
903		if (millis > 0L)
904		Thread.sleep(millis);
905		else // too short to sleep
906		Thread.yield();
907	<	long d = ns - (System.nanoTime() - startTime);
908	<	if (d > 0L)
909	<	millis = d / (1000 * 1000);
910	<	else
911	<	break;
907	>	nanos = wakeupTime - System.nanoTime();
908	>	millis = nanos / (1000 * 1000);
909	>	} while (nanos >= 0L);
910	>	}
911	>
912	>	/**
913	>	* Allows use of try-with-resources with per-test thread pools.
914	>	*/
915	>	class PoolCleaner implements AutoCloseable {
916	>	private final ExecutorService pool;
917	>	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
918	>	public void close() { joinPool(pool); }
919	>	}
920	>
921	>	/**
922	>	* An extension of PoolCleaner that has an action to release the pool.
923	>	*/
924	>	class PoolCleanerWithReleaser extends PoolCleaner {
925	>	private final Runnable releaser;
926	>	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
927	>	super(pool);
928	>	this.releaser = releaser;
929		}
930	+	public void close() {
931	+	try {
932	+	releaser.run();
933	+	} finally {
934	+	super.close();
935	+	}
936	+	}
937	+	}
938	+
939	+	PoolCleaner cleaner(ExecutorService pool) {
940	+	return new PoolCleaner(pool);
941	+	}
942	+
943	+	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
944	+	return new PoolCleanerWithReleaser(pool, releaser);
945	+	}
946	+
947	+	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
948	+	return new PoolCleanerWithReleaser(pool, releaser(latch));
949	+	}
950	+
951	+	Runnable releaser(final CountDownLatch latch) {
952	+	return new Runnable() { public void run() {
953	+	do { latch.countDown(); }
954	+	while (latch.getCount() > 0);
955	+	}};
956	+	}
957	+
958	+	PoolCleaner cleaner(ExecutorService pool, AtomicBoolean flag) {
959	+	return new PoolCleanerWithReleaser(pool, releaser(flag));
960	+	}
961	+
962	+	Runnable releaser(final AtomicBoolean flag) {
963	+	return new Runnable() { public void run() { flag.set(true); }};
964		}
965
966		/**
967		* Waits out termination of a thread pool or fails doing so.
968		*/
969	<	void joinPool(ExecutorService exec) {
969	>	void joinPool(ExecutorService pool) {
970		try {
971	<	exec.shutdown();
972	<	assertTrue("ExecutorService did not terminate in a timely manner",
973	<	exec.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS));
971	>	pool.shutdown();
972	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
973	>	try {
974	>	threadFail("ExecutorService " + pool +
975	>	" did not terminate in a timely manner");
976	>	} finally {
977	>	// last resort, for the benefit of subsequent tests
978	>	pool.shutdownNow();
979	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
980	>	}
981	>	}
982		} catch (SecurityException ok) {
983		// Allowed in case test doesn't have privs
984	<	} catch (InterruptedException ie) {
985	<	fail("Unexpected InterruptedException");
984	>	} catch (InterruptedException fail) {
985	>	threadFail("Unexpected InterruptedException");
986		}
987		}
988
989		/**
990	<	* A debugging tool to print all stack traces, as jstack does.
990	>	* Like Runnable, but with the freedom to throw anything.
991	>	* junit folks had the same idea:
992	>	* http://junit.org/junit5/docs/snapshot/api/org/junit/gen5/api/Executable.html
993		*/
994	<	static void printAllStackTraces() {
995	<	for (ThreadInfo info :
996	<	ManagementFactory.getThreadMXBean()
997	<	.dumpAllThreads(true, true))
994	>	interface Action { public void run() throws Throwable; }
995	>
996	>	/**
997	>	* Runs all the given actions in parallel, failing if any fail.
998	>	* Useful for running multiple variants of tests that are
999	>	* necessarily individually slow because they must block.
1000	>	*/
1001	>	void testInParallel(Action ... actions) {
1002	>	ExecutorService pool = Executors.newCachedThreadPool();
1003	>	try (PoolCleaner cleaner = cleaner(pool)) {
1004	>	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
1005	>	for (final Action action : actions)
1006	>	futures.add(pool.submit(new CheckedRunnable() {
1007	>	public void realRun() throws Throwable { action.run();}}));
1008	>	for (Future<?> future : futures)
1009	>	try {
1010	>	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
1011	>	} catch (ExecutionException ex) {
1012	>	threadUnexpectedException(ex.getCause());
1013	>	} catch (Exception ex) {
1014	>	threadUnexpectedException(ex);
1015	>	}
1016	>	}
1017	>	}
1018	>
1019	>	/**
1020	>	* A debugging tool to print stack traces of most threads, as jstack does.
1021	>	* Uninteresting threads are filtered out.
1022	>	*/
1023	>	static void dumpTestThreads() {
1024	>	SecurityManager sm = System.getSecurityManager();
1025	>	if (sm != null) {
1026	>	try {
1027	>	System.setSecurityManager(null);
1028	>	} catch (SecurityException giveUp) {
1029	>	return;
1030	>	}
1031	>	}
1032	>
1033	>	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
1034	>	System.err.println("------ stacktrace dump start ------");
1035	>	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
1036	>	final String name = info.getThreadName();
1037	>	String lockName;
1038	>	if ("Signal Dispatcher".equals(name))
1039	>	continue;
1040	>	if ("Reference Handler".equals(name)
1041	>	&& (lockName = info.getLockName()) != null
1042	>	&& lockName.startsWith("java.lang.ref.Reference$Lock"))
1043	>	continue;
1044	>	if ("Finalizer".equals(name)
1045	>	&& (lockName = info.getLockName()) != null
1046	>	&& lockName.startsWith("java.lang.ref.ReferenceQueue$Lock"))
1047	>	continue;
1048	>	if ("checkForWedgedTest".equals(name))
1049	>	continue;
1050		System.err.print(info);
1051	+	}
1052	+	System.err.println("------ stacktrace dump end ------");
1053	+
1054	+	if (sm != null) System.setSecurityManager(sm);
1055		}
1056
1057		/**
#	Line 623 | Line 1070 | public class JSR166TestCase extends Test
1070		// No need to optimize the failing case via Thread.join.
1071		delay(millis);
1072		assertTrue(thread.isAlive());
1073	<	} catch (InterruptedException ie) {
1074	<	fail("Unexpected InterruptedException");
1073	>	} catch (InterruptedException fail) {
1074	>	threadFail("Unexpected InterruptedException");
1075		}
1076		}
1077
#	Line 645 | Line 1092 | public class JSR166TestCase extends Test
1092		delay(millis);
1093		for (Thread thread : threads)
1094		assertTrue(thread.isAlive());
1095	<	} catch (InterruptedException ie) {
1096	<	fail("Unexpected InterruptedException");
1095	>	} catch (InterruptedException fail) {
1096	>	threadFail("Unexpected InterruptedException");
1097		}
1098		}
1099
#	Line 667 | Line 1114 | public class JSR166TestCase extends Test
1114		future.get(timeoutMillis, MILLISECONDS);
1115		shouldThrow();
1116		} catch (TimeoutException success) {
1117	<	} catch (Exception e) {
1118	<	threadUnexpectedException(e);
1117	>	} catch (Exception fail) {
1118	>	threadUnexpectedException(fail);
1119		} finally { future.cancel(true); }
1120		assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
1121		}
#	Line 791 | Line 1238 | public class JSR166TestCase extends Test
1238		}
1239		public void refresh() {}
1240		public String toString() {
1241	<	List<Permission> ps = new ArrayList<Permission>();
1241	>	List<Permission> ps = new ArrayList<>();
1242		for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1243		ps.add(e.nextElement());
1244		return "AdjustablePolicy with permissions " + ps;
#	Line 821 | Line 1268 | public class JSR166TestCase extends Test
1268		* Sleeps until the given time has elapsed.
1269		* Throws AssertionFailedError if interrupted.
1270		*/
1271	<	void sleep(long millis) {
1271	>	static void sleep(long millis) {
1272		try {
1273		delay(millis);
1274	<	} catch (InterruptedException ie) {
1274	>	} catch (InterruptedException fail) {
1275		AssertionFailedError afe =
1276		new AssertionFailedError("Unexpected InterruptedException");
1277	<	afe.initCause(ie);
1277	>	afe.initCause(fail);
1278		throw afe;
1279		}
1280		}
#	Line 837 | Line 1284 | public class JSR166TestCase extends Test
1284		* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1285		*/
1286		void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1287	<	long startTime = System.nanoTime();
1287	>	long startTime = 0L;
1288		for (;;) {
1289		Thread.State s = thread.getState();
1290		if (s == Thread.State.BLOCKED ||
#	Line 846 | Line 1293 | public class JSR166TestCase extends Test
1293		return;
1294		else if (s == Thread.State.TERMINATED)
1295		fail("Unexpected thread termination");
1296	+	else if (startTime == 0L)
1297	+	startTime = System.nanoTime();
1298		else if (millisElapsedSince(startTime) > timeoutMillis) {
1299		threadAssertTrue(thread.isAlive());
1300		return;
#	Line 865 | Line 1314 | public class JSR166TestCase extends Test
1314		/**
1315		* Returns the number of milliseconds since time given by
1316		* startNanoTime, which must have been previously returned from a
1317	<	* call to {@link System.nanoTime()}.
1317	>	* call to {@link System#nanoTime()}.
1318		*/
1319	<	long millisElapsedSince(long startNanoTime) {
1319	>	static long millisElapsedSince(long startNanoTime) {
1320		return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1321		}
1322
1323	+	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1324	+	//         long startTime = System.nanoTime();
1325	+	//         try {
1326	+	//             r.run();
1327	+	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1328	+	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1329	+	//             throw new AssertionFailedError("did not return promptly");
1330	+	//     }
1331	+
1332	+	//     void assertTerminatesPromptly(Runnable r) {
1333	+	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1334	+	//     }
1335	+
1336	+	/**
1337	+	* Checks that timed f.get() returns the expected value, and does not
1338	+	* wait for the timeout to elapse before returning.
1339	+	*/
1340	+	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1341	+	long startTime = System.nanoTime();
1342	+	try {
1343	+	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1344	+	} catch (Throwable fail) { threadUnexpectedException(fail); }
1345	+	if (millisElapsedSince(startTime) > timeoutMillis/2)
1346	+	throw new AssertionFailedError("timed get did not return promptly");
1347	+	}
1348	+
1349	+	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1350	+	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1351	+	}
1352	+
1353		/**
1354		* Returns a new started daemon Thread running the given runnable.
1355		*/
#	Line 889 | Line 1368 | public class JSR166TestCase extends Test
1368		void awaitTermination(Thread t, long timeoutMillis) {
1369		try {
1370		t.join(timeoutMillis);
1371	<	} catch (InterruptedException ie) {
1372	<	threadUnexpectedException(ie);
1371	>	} catch (InterruptedException fail) {
1372	>	threadUnexpectedException(fail);
1373		} finally {
1374		if (t.getState() != Thread.State.TERMINATED) {
1375		t.interrupt();
1376	<	fail("Test timed out");
1376	>	threadFail("timed out waiting for thread to terminate");
1377		}
1378		}
1379		}
#	Line 916 | Line 1395 | public class JSR166TestCase extends Test
1395		public final void run() {
1396		try {
1397		realRun();
1398	<	} catch (Throwable t) {
1399	<	threadUnexpectedException(t);
1398	>	} catch (Throwable fail) {
1399	>	threadUnexpectedException(fail);
1400		}
1401		}
1402		}
#	Line 971 | Line 1450 | public class JSR166TestCase extends Test
1450		threadShouldThrow("InterruptedException");
1451		} catch (InterruptedException success) {
1452		threadAssertFalse(Thread.interrupted());
1453	<	} catch (Throwable t) {
1454	<	threadUnexpectedException(t);
1453	>	} catch (Throwable fail) {
1454	>	threadUnexpectedException(fail);
1455		}
1456		}
1457		}
#	Line 983 | Line 1462 | public class JSR166TestCase extends Test
1462		public final T call() {
1463		try {
1464		return realCall();
1465	<	} catch (Throwable t) {
1466	<	threadUnexpectedException(t);
1465	>	} catch (Throwable fail) {
1466	>	threadUnexpectedException(fail);
1467		return null;
1468		}
1469		}
#	Line 1001 | Line 1480 | public class JSR166TestCase extends Test
1480		return result;
1481		} catch (InterruptedException success) {
1482		threadAssertFalse(Thread.interrupted());
1483	<	} catch (Throwable t) {
1484	<	threadUnexpectedException(t);
1483	>	} catch (Throwable fail) {
1484	>	threadUnexpectedException(fail);
1485		}
1486		return null;
1487		}
#	Line 1019 | Line 1498 | public class JSR166TestCase extends Test
1498		public static final String TEST_STRING = "a test string";
1499
1500		public static class StringTask implements Callable<String> {
1501	<	public String call() { return TEST_STRING; }
1501	>	final String value;
1502	>	public StringTask() { this(TEST_STRING); }
1503	>	public StringTask(String value) { this.value = value; }
1504	>	public String call() { return value; }
1505		}
1506
1507		public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
#	Line 1032 | Line 1514 | public class JSR166TestCase extends Test
1514		}};
1515		}
1516
1517	<	public Runnable awaiter(final CountDownLatch latch) {
1517	>	public Runnable countDowner(final CountDownLatch latch) {
1518		return new CheckedRunnable() {
1519		public void realRun() throws InterruptedException {
1520	<	await(latch);
1520	>	latch.countDown();
1521		}};
1522		}
1523
1524	<	public void await(CountDownLatch latch) {
1524	>	class LatchAwaiter extends CheckedRunnable {
1525	>	static final int NEW = 0;
1526	>	static final int RUNNING = 1;
1527	>	static final int DONE = 2;
1528	>	final CountDownLatch latch;
1529	>	int state = NEW;
1530	>	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1531	>	public void realRun() throws InterruptedException {
1532	>	state = 1;
1533	>	await(latch);
1534	>	state = 2;
1535	>	}
1536	>	}
1537	>
1538	>	public LatchAwaiter awaiter(CountDownLatch latch) {
1539	>	return new LatchAwaiter(latch);
1540	>	}
1541	>
1542	>	public void await(CountDownLatch latch, long timeoutMillis) {
1543		try {
1544	<	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1545	<	} catch (Throwable t) {
1546	<	threadUnexpectedException(t);
1544	>	if (!latch.await(timeoutMillis, MILLISECONDS))
1545	>	fail("timed out waiting for CountDownLatch for "
1546	>	+ (timeoutMillis/1000) + " sec");
1547	>	} catch (Throwable fail) {
1548	>	threadUnexpectedException(fail);
1549		}
1550		}
1551
1552	+	public void await(CountDownLatch latch) {
1553	+	await(latch, LONG_DELAY_MS);
1554	+	}
1555	+
1556		public void await(Semaphore semaphore) {
1557		try {
1558	<	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1559	<	} catch (Throwable t) {
1560	<	threadUnexpectedException(t);
1558	>	if (!semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS))
1559	>	fail("timed out waiting for Semaphore for "
1560	>	+ (LONG_DELAY_MS/1000) + " sec");
1561	>	} catch (Throwable fail) {
1562	>	threadUnexpectedException(fail);
1563		}
1564		}
1565
#	Line 1245 | Line 1753 | public class JSR166TestCase extends Test
1753		@Override protected final void compute() {
1754		try {
1755		realCompute();
1756	<	} catch (Throwable t) {
1757	<	threadUnexpectedException(t);
1756	>	} catch (Throwable fail) {
1757	>	threadUnexpectedException(fail);
1758		}
1759		}
1760		}
#	Line 1260 | Line 1768 | public class JSR166TestCase extends Test
1768		@Override protected final T compute() {
1769		try {
1770		return realCompute();
1771	<	} catch (Throwable t) {
1772	<	threadUnexpectedException(t);
1771	>	} catch (Throwable fail) {
1772	>	threadUnexpectedException(fail);
1773		return null;
1774		}
1775		}
#	Line 1279 | Line 1787 | public class JSR166TestCase extends Test
1787		* A CyclicBarrier that uses timed await and fails with
1788		* AssertionFailedErrors instead of throwing checked exceptions.
1789		*/
1790	<	public class CheckedBarrier extends CyclicBarrier {
1790	>	public static class CheckedBarrier extends CyclicBarrier {
1791		public CheckedBarrier(int parties) { super(parties); }
1792
1793		public int await() {
1794		try {
1795		return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1796	<	} catch (TimeoutException e) {
1796	>	} catch (TimeoutException timedOut) {
1797		throw new AssertionFailedError("timed out");
1798	<	} catch (Exception e) {
1798	>	} catch (Exception fail) {
1799		AssertionFailedError afe =
1800	<	new AssertionFailedError("Unexpected exception: " + e);
1801	<	afe.initCause(e);
1800	>	new AssertionFailedError("Unexpected exception: " + fail);
1801	>	afe.initCause(fail);
1802		throw afe;
1803		}
1804		}
#	Line 1318 | Line 1826 | public class JSR166TestCase extends Test
1826		q.remove();
1827		shouldThrow();
1828		} catch (NoSuchElementException success) {}
1829	<	} catch (InterruptedException ie) {
1322	<	threadUnexpectedException(ie);
1323	<	}
1829	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1830		}
1831
1832		void assertSerialEquals(Object x, Object y) {
#	Line 1339 | Line 1845 | public class JSR166TestCase extends Test
1845		oos.flush();
1846		oos.close();
1847		return bos.toByteArray();
1848	<	} catch (Throwable t) {
1849	<	threadUnexpectedException(t);
1848	>	} catch (Throwable fail) {
1849	>	threadUnexpectedException(fail);
1850		return new byte[0];
1851		}
1852		}
1853
1854	+	void assertImmutable(final Object o) {
1855	+	if (o instanceof Collection) {
1856	+	assertThrows(
1857	+	UnsupportedOperationException.class,
1858	+	new Runnable() { public void run() {
1859	+	((Collection) o).add(null);}});
1860	+	}
1861	+	}
1862	+
1863		@SuppressWarnings("unchecked")
1864		<T> T serialClone(T o) {
1865		try {
1866		ObjectInputStream ois = new ObjectInputStream
1867		(new ByteArrayInputStream(serialBytes(o)));
1868		T clone = (T) ois.readObject();
1869	+	if (o == clone) assertImmutable(o);
1870		assertSame(o.getClass(), clone.getClass());
1871		return clone;
1872	<	} catch (Throwable t) {
1873	<	threadUnexpectedException(t);
1872	>	} catch (Throwable fail) {
1873	>	threadUnexpectedException(fail);
1874		return null;
1875		}
1876		}
1877
1878	+	/**
1879	+	* A version of serialClone that leaves error handling (for
1880	+	* e.g. NotSerializableException) up to the caller.
1881	+	*/
1882	+	@SuppressWarnings("unchecked")
1883	+	<T> T serialClonePossiblyFailing(T o)
1884	+	throws ReflectiveOperationException, java.io.IOException {
1885	+	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1886	+	ObjectOutputStream oos = new ObjectOutputStream(bos);
1887	+	oos.writeObject(o);
1888	+	oos.flush();
1889	+	oos.close();
1890	+	ObjectInputStream ois = new ObjectInputStream
1891	+	(new ByteArrayInputStream(bos.toByteArray()));
1892	+	T clone = (T) ois.readObject();
1893	+	if (o == clone) assertImmutable(o);
1894	+	assertSame(o.getClass(), clone.getClass());
1895	+	return clone;
1896	+	}
1897	+
1898	+	/**
1899	+	* If o implements Cloneable and has a public clone method,
1900	+	* returns a clone of o, else null.
1901	+	*/
1902	+	@SuppressWarnings("unchecked")
1903	+	<T> T cloneableClone(T o) {
1904	+	if (!(o instanceof Cloneable)) return null;
1905	+	final T clone;
1906	+	try {
1907	+	clone = (T) o.getClass().getMethod("clone").invoke(o);
1908	+	} catch (NoSuchMethodException ok) {
1909	+	return null;
1910	+	} catch (ReflectiveOperationException unexpected) {
1911	+	throw new Error(unexpected);
1912	+	}
1913	+	assertNotSame(o, clone); // not 100% guaranteed by spec
1914	+	assertSame(o.getClass(), clone.getClass());
1915	+	return clone;
1916	+	}
1917	+
1918		public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1919		Runnable... throwingActions) {
1920		for (Runnable throwingAction : throwingActions) {
#	Line 1379 | Line 1935 | public class JSR166TestCase extends Test
1935		shouldThrow(expectedExceptionClass.getName());
1936		}
1937		}
1938	+
1939	+	public void assertIteratorExhausted(Iterator<?> it) {
1940	+	try {
1941	+	it.next();
1942	+	shouldThrow();
1943	+	} catch (NoSuchElementException success) {}
1944	+	assertFalse(it.hasNext());
1945	+	}
1946	+
1947	+	public <T> Callable<T> callableThrowing(final Exception ex) {
1948	+	return new Callable<T>() { public T call() throws Exception { throw ex; }};
1949	+	}
1950	+
1951	+	public Runnable runnableThrowing(final RuntimeException ex) {
1952	+	return new Runnable() { public void run() { throw ex; }};
1953	+	}
1954	+
1955	+	/** A reusable thread pool to be shared by tests. */
1956	+	static final ExecutorService cachedThreadPool =
1957	+	new ThreadPoolExecutor(0, Integer.MAX_VALUE,
1958	+	1000L, MILLISECONDS,
1959	+	new SynchronousQueue<Runnable>());
1960	+
1961	+	static <T> void shuffle(T[] array) {
1962	+	Collections.shuffle(Arrays.asList(array), ThreadLocalRandom.current());
1963	+	}
1964		}

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