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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.111 by dl, Sun Jul 21 22:24:18 2013 UTC vs.
Revision 1.218 by jsr166, Sun Jan 29 20:19:00 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.base/java.lang:open
23	>	*          java.management
24	>	* @run junit/othervm/timeout=1000
25	>	*      -Djsr166.testImplementationDetails=true
26	>	*      JSR166TestCase
27	>	* @run junit/othervm/timeout=1000
28	>	*      -Djsr166.testImplementationDetails=true
29	>	*      -Djava.util.concurrent.ForkJoinPool.common.parallelism=0
30	>	*      JSR166TestCase
31	>	* @run junit/othervm/timeout=1000
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	>	*      -Djsr166.testImplementationDetails=true
38	>	*      JSR166TestCase
39	>	*/
40	>
41	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
42	>	import static java.util.concurrent.TimeUnit.MINUTES;
43	>	import static java.util.concurrent.TimeUnit.NANOSECONDS;
44	>
45		import java.io.ByteArrayInputStream;
46		import java.io.ByteArrayOutputStream;
47		import java.io.ObjectInputStream;
48		import java.io.ObjectOutputStream;
49		import java.lang.management.ManagementFactory;
50		import java.lang.management.ThreadInfo;
51	+	import java.lang.management.ThreadMXBean;
52	+	import java.lang.reflect.Constructor;
53		import java.lang.reflect.Method;
54	+	import java.lang.reflect.Modifier;
55	+	import java.nio.file.Files;
56	+	import java.nio.file.Paths;
57	+	import java.security.CodeSource;
58	+	import java.security.Permission;
59	+	import java.security.PermissionCollection;
60	+	import java.security.Permissions;
61	+	import java.security.Policy;
62	+	import java.security.ProtectionDomain;
63	+	import java.security.SecurityPermission;
64		import java.util.ArrayList;
65		import java.util.Arrays;
66	+	import java.util.Collection;
67	+	import java.util.Collections;
68		import java.util.Date;
69		import java.util.Enumeration;
70	+	import java.util.Iterator;
71		import java.util.List;
72		import java.util.NoSuchElementException;
73		import java.util.PropertyPermission;
74	<	import java.util.concurrent.*;
74	>	import java.util.concurrent.BlockingQueue;
75	>	import java.util.concurrent.Callable;
76	>	import java.util.concurrent.CountDownLatch;
77	>	import java.util.concurrent.CyclicBarrier;
78	>	import java.util.concurrent.ExecutionException;
79	>	import java.util.concurrent.Executors;
80	>	import java.util.concurrent.ExecutorService;
81	>	import java.util.concurrent.ForkJoinPool;
82	>	import java.util.concurrent.Future;
83	>	import java.util.concurrent.RecursiveAction;
84	>	import java.util.concurrent.RecursiveTask;
85	>	import java.util.concurrent.RejectedExecutionHandler;
86	>	import java.util.concurrent.Semaphore;
87	>	import java.util.concurrent.SynchronousQueue;
88	>	import java.util.concurrent.ThreadFactory;
89	>	import java.util.concurrent.ThreadLocalRandom;
90	>	import java.util.concurrent.ThreadPoolExecutor;
91	>	import java.util.concurrent.TimeoutException;
92		import java.util.concurrent.atomic.AtomicBoolean;
93		import java.util.concurrent.atomic.AtomicReference;
94	<	import static java.util.concurrent.TimeUnit.MILLISECONDS;
95	<	import static java.util.concurrent.TimeUnit.NANOSECONDS;
96	<	import java.security.CodeSource;
97	<	import java.security.Permission;
98	<	import java.security.PermissionCollection;
99	<	import java.security.Permissions;
100	<	import java.security.Policy;
101	<	import java.security.ProtectionDomain;
35	<	import java.security.SecurityPermission;
94	>	import java.util.regex.Matcher;
95	>	import java.util.regex.Pattern;
96	>
97	>	import junit.framework.AssertionFailedError;
98	>	import junit.framework.Test;
99	>	import junit.framework.TestCase;
100	>	import junit.framework.TestResult;
101	>	import junit.framework.TestSuite;
102
103		/**
104		* Base class for JSR166 Junit TCK tests.  Defines some constants,
#	Line 44 | Line 110 | import java.security.SecurityPermission;
110		*
111		* <ol>
112		*
113	<	* <li> All assertions in code running in generated threads must use
113	>	* <li>All assertions in code running in generated threads must use
114		* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
115		* #threadAssertEquals}, or {@link #threadAssertNull}, (not
116		* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
117		* particularly recommended) for other code to use these forms too.
118		* Only the most typically used JUnit assertion methods are defined
119	<	* this way, but enough to live with.</li>
119	>	* this way, but enough to live with.
120		*
121	<	* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
121	>	* <li>If you override {@link #setUp} or {@link #tearDown}, make sure
122		* to invoke {@code super.setUp} and {@code super.tearDown} within
123		* them. These methods are used to clear and check for thread
124	<	* assertion failures.</li>
124	>	* assertion failures.
125		*
126		* <li>All delays and timeouts must use one of the constants {@code
127		* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
#	Line 66 | Line 132 | import java.security.SecurityPermission;
132		* is always discriminable as larger than SHORT and smaller than
133		* MEDIUM.  And so on. These constants are set to conservative values,
134		* but even so, if there is ever any doubt, they can all be increased
135	<	* in one spot to rerun tests on slower platforms.</li>
135	>	* in one spot to rerun tests on slower platforms.
136		*
137	<	* <li> All threads generated must be joined inside each test case
137	>	* <li>All threads generated must be joined inside each test case
138		* method (or {@code fail} to do so) before returning from the
139		* method. The {@code joinPool} method can be used to do this when
140	<	* using Executors.</li>
140	>	* using Executors.
141		*
142		* </ol>
143		*
144		* <p><b>Other notes</b>
145		* <ul>
146		*
147	<	* <li> Usually, there is one testcase method per JSR166 method
147	>	* <li>Usually, there is one testcase method per JSR166 method
148		* covering "normal" operation, and then as many exception-testing
149		* methods as there are exceptions the method can throw. Sometimes
150		* there are multiple tests per JSR166 method when the different
151		* "normal" behaviors differ significantly. And sometimes testcases
152	<	* cover multiple methods when they cannot be tested in
87	<	* isolation.</li>
152	>	* cover multiple methods when they cannot be tested in isolation.
153		*
154	<	* <li> The documentation style for testcases is to provide as javadoc
154	>	* <li>The documentation style for testcases is to provide as javadoc
155		* a simple sentence or two describing the property that the testcase
156		* method purports to test. The javadocs do not say anything about how
157	<	* the property is tested. To find out, read the code.</li>
157	>	* the property is tested. To find out, read the code.
158		*
159	<	* <li> These tests are "conformance tests", and do not attempt to
159	>	* <li>These tests are "conformance tests", and do not attempt to
160		* test throughput, latency, scalability or other performance factors
161		* (see the separate "jtreg" tests for a set intended to check these
162		* for the most central aspects of functionality.) So, most tests use
163		* the smallest sensible numbers of threads, collection sizes, etc
164	<	* needed to check basic conformance.</li>
164	>	* needed to check basic conformance.
165		*
166		* <li>The test classes currently do not declare inclusion in
167		* any particular package to simplify things for people integrating
168	<	* them in TCK test suites.</li>
168	>	* them in TCK test suites.
169		*
170	<	* <li> As a convenience, the {@code main} of this class (JSR166TestCase)
171	<	* runs all JSR166 unit tests.</li>
170	>	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
171	>	* runs all JSR166 unit tests.
172		*
173		* </ul>
174		*/
#	Line 115 | Line 180 | public class JSR166TestCase extends Test
180		Boolean.getBoolean("jsr166.expensiveTests");
181
182		/**
183	+	* If true, also run tests that are not part of the official tck
184	+	* because they test unspecified implementation details.
185	+	*/
186	+	protected static final boolean testImplementationDetails =
187	+	Boolean.getBoolean("jsr166.testImplementationDetails");
188	+
189	+	/**
190		* If true, report on stdout all "slow" tests, that is, ones that
191		* take more than profileThreshold milliseconds to execute.
192		*/
#	Line 134 | Line 206 | public class JSR166TestCase extends Test
206		private static final int runsPerTest =
207		Integer.getInteger("jsr166.runsPerTest", 1);
208
209	+	/**
210	+	* The number of repetitions of the test suite (for finding leaks?).
211	+	*/
212	+	private static final int suiteRuns =
213	+	Integer.getInteger("jsr166.suiteRuns", 1);
214	+
215	+	/**
216	+	* Returns the value of the system property, or NaN if not defined.
217	+	*/
218	+	private static float systemPropertyValue(String name) {
219	+	String floatString = System.getProperty(name);
220	+	if (floatString == null)
221	+	return Float.NaN;
222	+	try {
223	+	return Float.parseFloat(floatString);
224	+	} catch (NumberFormatException ex) {
225	+	throw new IllegalArgumentException(
226	+	String.format("Bad float value in system property %s=%s",
227	+	name, floatString));
228	+	}
229	+	}
230	+
231	+	/**
232	+	* The scaling factor to apply to standard delays used in tests.
233	+	* May be initialized from any of:
234	+	* - the "jsr166.delay.factor" system property
235	+	* - the "test.timeout.factor" system property (as used by jtreg)
236	+	*   See: http://openjdk.java.net/jtreg/tag-spec.html
237	+	* - hard-coded fuzz factor when using a known slowpoke VM
238	+	*/
239	+	private static final float delayFactor = delayFactor();
240	+
241	+	private static float delayFactor() {
242	+	float x;
243	+	if (!Float.isNaN(x = systemPropertyValue("jsr166.delay.factor")))
244	+	return x;
245	+	if (!Float.isNaN(x = systemPropertyValue("test.timeout.factor")))
246	+	return x;
247	+	String prop = System.getProperty("java.vm.version");
248	+	if (prop != null && prop.matches(".*debug.*"))
249	+	return 4.0f; // How much slower is fastdebug than product?!
250	+	return 1.0f;
251	+	}
252	+
253	+	public JSR166TestCase() { super(); }
254	+	public JSR166TestCase(String name) { super(name); }
255	+
256	+	/**
257	+	* A filter for tests to run, matching strings of the form
258	+	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
259	+	* Usefully combined with jsr166.runsPerTest.
260	+	*/
261	+	private static final Pattern methodFilter = methodFilter();
262	+
263	+	private static Pattern methodFilter() {
264	+	String regex = System.getProperty("jsr166.methodFilter");
265	+	return (regex == null) ? null : Pattern.compile(regex);
266	+	}
267	+
268	+	// Instrumentation to debug very rare, but very annoying hung test runs.
269	+	static volatile TestCase currentTestCase;
270	+	// static volatile int currentRun = 0;
271	+	static {
272	+	Runnable checkForWedgedTest = new Runnable() { public void run() {
273	+	// Avoid spurious reports with enormous runsPerTest.
274	+	// A single test case run should never take more than 1 second.
275	+	// But let's cap it at the high end too ...
276	+	final int timeoutMinutes =
277	+	Math.min(15, Math.max(runsPerTest / 60, 1));
278	+	for (TestCase lastTestCase = currentTestCase;;) {
279	+	try { MINUTES.sleep(timeoutMinutes); }
280	+	catch (InterruptedException unexpected) { break; }
281	+	if (lastTestCase == currentTestCase) {
282	+	System.err.printf(
283	+	"Looks like we're stuck running test: %s%n",
284	+	lastTestCase);
285	+	//                     System.err.printf(
286	+	//                         "Looks like we're stuck running test: %s (%d/%d)%n",
287	+	//                         lastTestCase, currentRun, runsPerTest);
288	+	//                     System.err.println("availableProcessors=" +
289	+	//                         Runtime.getRuntime().availableProcessors());
290	+	//                     System.err.printf("cpu model = %s%n", cpuModel());
291	+	dumpTestThreads();
292	+	// one stack dump is probably enough; more would be spam
293	+	break;
294	+	}
295	+	lastTestCase = currentTestCase;
296	+	}}};
297	+	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
298	+	thread.setDaemon(true);
299	+	thread.start();
300	+	}
301	+
302	+	//     public static String cpuModel() {
303	+	//         try {
304	+	//             Matcher matcher = Pattern.compile("model name\\s*: (.*)")
305	+	//                 .matcher(new String(
306	+	//                      Files.readAllBytes(Paths.get("/proc/cpuinfo")), "UTF-8"));
307	+	//             matcher.find();
308	+	//             return matcher.group(1);
309	+	//         } catch (Exception ex) { return null; }
310	+	//     }
311	+
312	+	public void runBare() throws Throwable {
313	+	currentTestCase = this;
314	+	if (methodFilter == null
315	+	|| methodFilter.matcher(toString()).find())
316	+	super.runBare();
317	+	}
318	+
319		protected void runTest() throws Throwable {
320		for (int i = 0; i < runsPerTest; i++) {
321	+	// currentRun = i;
322		if (profileTests)
323		runTestProfiled();
324		else
#	Line 144 | Line 327 | public class JSR166TestCase extends Test
327		}
328
329		protected void runTestProfiled() throws Throwable {
330	<	long t0 = System.nanoTime();
331	<	try {
330	>	for (int i = 0; i < 2; i++) {
331	>	long startTime = System.nanoTime();
332		super.runTest();
333	<	} finally {
334	<	long elapsedMillis =
335	<	(System.nanoTime() - t0) / (1000L * 1000L);
336	<	if (elapsedMillis >= profileThreshold)
333	>	long elapsedMillis = millisElapsedSince(startTime);
334	>	if (elapsedMillis < profileThreshold)
335	>	break;
336	>	// Never report first run of any test; treat it as a
337	>	// warmup run, notably to trigger all needed classloading,
338	>	if (i > 0)
339		System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
340		}
341		}
342
343		/**
344		* 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.
345		*/
346		public static void main(String[] args) {
347	+	main(suite(), args);
348	+	}
349	+
350	+	static class PithyResultPrinter extends junit.textui.ResultPrinter {
351	+	PithyResultPrinter(java.io.PrintStream writer) { super(writer); }
352	+	long runTime;
353	+	public void startTest(Test test) {}
354	+	protected void printHeader(long runTime) {
355	+	this.runTime = runTime; // defer printing for later
356	+	}
357	+	protected void printFooter(TestResult result) {
358	+	if (result.wasSuccessful()) {
359	+	getWriter().println("OK (" + result.runCount() + " tests)"
360	+	+ "  Time: " + elapsedTimeAsString(runTime));
361	+	} else {
362	+	getWriter().println("Time: " + elapsedTimeAsString(runTime));
363	+	super.printFooter(result);
364	+	}
365	+	}
366	+	}
367	+
368	+	/**
369	+	* Returns a TestRunner that doesn't bother with unnecessary
370	+	* fluff, like printing a "." for each test case.
371	+	*/
372	+	static junit.textui.TestRunner newPithyTestRunner() {
373	+	junit.textui.TestRunner runner = new junit.textui.TestRunner();
374	+	runner.setPrinter(new PithyResultPrinter(System.out));
375	+	return runner;
376	+	}
377	+
378	+	/**
379	+	* Runs all unit tests in the given test suite.
380	+	* Actual behavior influenced by jsr166.* system properties.
381	+	*/
382	+	static void main(Test suite, String[] args) {
383		if (useSecurityManager) {
384		System.err.println("Setting a permissive security manager");
385		Policy.setPolicy(permissivePolicy());
386		System.setSecurityManager(new SecurityManager());
387		}
388	<	int iters = (args.length == 0) ? 1 : Integer.parseInt(args[0]);
389	<
390	<	Test s = suite();
391	<	for (int i = 0; i < iters; ++i) {
173	<	junit.textui.TestRunner.run(s);
388	>	for (int i = 0; i < suiteRuns; i++) {
389	>	TestResult result = newPithyTestRunner().doRun(suite);
390	>	if (!result.wasSuccessful())
391	>	System.exit(1);
392		System.gc();
393		System.runFinalization();
394		}
177	–	System.exit(0);
395		}
396
397		public static TestSuite newTestSuite(Object... suiteOrClasses) {
#	Line 205 | Line 422 | public class JSR166TestCase extends Test
422		}
423
424		public static final double JAVA_CLASS_VERSION;
425	+	public static final String JAVA_SPECIFICATION_VERSION;
426		static {
427		try {
428		JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
429		new java.security.PrivilegedAction<Double>() {
430		public Double run() {
431		return Double.valueOf(System.getProperty("java.class.version"));}});
432	+	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
433	+	new java.security.PrivilegedAction<String>() {
434	+	public String run() {
435	+	return System.getProperty("java.specification.version");}});
436		} catch (Throwable t) {
437		throw new Error(t);
438		}
#	Line 219 | Line 441 | public class JSR166TestCase extends Test
441		public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
442		public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
443		public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
444	+	public static boolean atLeastJava9() {
445	+	return JAVA_CLASS_VERSION >= 53.0
446	+	// As of 2015-09, java9 still uses 52.0 class file version
447	+	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?(9|[0-9][0-9])$");
448	+	}
449	+	public static boolean atLeastJava10() {
450	+	return JAVA_CLASS_VERSION >= 54.0
451	+	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?[0-9][0-9]$");
452	+	}
453
454		/**
455		* Collects all JSR166 unit tests as one suite.
#	Line 239 | Line 470 | public class JSR166TestCase extends Test
470		AbstractQueuedLongSynchronizerTest.suite(),
471		ArrayBlockingQueueTest.suite(),
472		ArrayDequeTest.suite(),
473	+	ArrayListTest.suite(),
474		AtomicBooleanTest.suite(),
475		AtomicIntegerArrayTest.suite(),
476		AtomicIntegerFieldUpdaterTest.suite(),
#	Line 261 | Line 493 | public class JSR166TestCase extends Test
493		CopyOnWriteArrayListTest.suite(),
494		CopyOnWriteArraySetTest.suite(),
495		CountDownLatchTest.suite(),
496	+	CountedCompleterTest.suite(),
497		CyclicBarrierTest.suite(),
498		DelayQueueTest.suite(),
499		EntryTest.suite(),
#	Line 289 | Line 522 | public class JSR166TestCase extends Test
522		TreeMapTest.suite(),
523		TreeSetTest.suite(),
524		TreeSubMapTest.suite(),
525	<	TreeSubSetTest.suite());
525	>	TreeSubSetTest.suite(),
526	>	VectorTest.suite());
527
528		// Java8+ test classes
529		if (atLeastJava8()) {
530		String[] java8TestClassNames = {
531	+	"ArrayDeque8Test",
532	+	"Atomic8Test",
533		"CompletableFutureTest",
534		"ConcurrentHashMap8Test",
535	<	"CountedCompleterTest",
535	>	"CountedCompleter8Test",
536		"DoubleAccumulatorTest",
537		"DoubleAdderTest",
538		"ForkJoinPool8Test",
539		"ForkJoinTask8Test",
540	+	"LinkedBlockingDeque8Test",
541	+	"LinkedBlockingQueue8Test",
542		"LongAccumulatorTest",
543		"LongAdderTest",
544		"SplittableRandomTest",
545		"StampedLockTest",
546	+	"SubmissionPublisherTest",
547	+	"ThreadLocalRandom8Test",
548	+	"TimeUnit8Test",
549		};
550		addNamedTestClasses(suite, java8TestClassNames);
551		}
552
553	+	// Java9+ test classes
554	+	if (atLeastJava9()) {
555	+	String[] java9TestClassNames = {
556	+	"AtomicBoolean9Test",
557	+	"AtomicInteger9Test",
558	+	"AtomicIntegerArray9Test",
559	+	"AtomicLong9Test",
560	+	"AtomicLongArray9Test",
561	+	"AtomicReference9Test",
562	+	"AtomicReferenceArray9Test",
563	+	"ExecutorCompletionService9Test",
564	+	"ForkJoinPool9Test",
565	+	};
566	+	addNamedTestClasses(suite, java9TestClassNames);
567	+	}
568	+
569		return suite;
570		}
571
572	+	/** Returns list of junit-style test method names in given class. */
573	+	public static ArrayList<String> testMethodNames(Class<?> testClass) {
574	+	Method[] methods = testClass.getDeclaredMethods();
575	+	ArrayList<String> names = new ArrayList<>(methods.length);
576	+	for (Method method : methods) {
577	+	if (method.getName().startsWith("test")
578	+	&& Modifier.isPublic(method.getModifiers())
579	+	// method.getParameterCount() requires jdk8+
580	+	&& method.getParameterTypes().length == 0) {
581	+	names.add(method.getName());
582	+	}
583	+	}
584	+	return names;
585	+	}
586	+
587	+	/**
588	+	* Returns junit-style testSuite for the given test class, but
589	+	* parameterized by passing extra data to each test.
590	+	*/
591	+	public static <ExtraData> Test parameterizedTestSuite
592	+	(Class<? extends JSR166TestCase> testClass,
593	+	Class<ExtraData> dataClass,
594	+	ExtraData data) {
595	+	try {
596	+	TestSuite suite = new TestSuite();
597	+	Constructor c =
598	+	testClass.getDeclaredConstructor(dataClass, String.class);
599	+	for (String methodName : testMethodNames(testClass))
600	+	suite.addTest((Test) c.newInstance(data, methodName));
601	+	return suite;
602	+	} catch (Exception e) {
603	+	throw new Error(e);
604	+	}
605	+	}
606	+
607	+	/**
608	+	* Returns junit-style testSuite for the jdk8 extension of the
609	+	* given test class, but parameterized by passing extra data to
610	+	* each test.  Uses reflection to allow compilation in jdk7.
611	+	*/
612	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
613	+	(Class<? extends JSR166TestCase> testClass,
614	+	Class<ExtraData> dataClass,
615	+	ExtraData data) {
616	+	if (atLeastJava8()) {
617	+	String name = testClass.getName();
618	+	String name8 = name.replaceAll("Test$", "8Test");
619	+	if (name.equals(name8)) throw new Error(name);
620	+	try {
621	+	return (Test)
622	+	Class.forName(name8)
623	+	.getMethod("testSuite", new Class[] { dataClass })
624	+	.invoke(null, data);
625	+	} catch (Exception e) {
626	+	throw new Error(e);
627	+	}
628	+	} else {
629	+	return new TestSuite();
630	+	}
631	+	}
632	+
633		// Delays for timing-dependent tests, in milliseconds.
634
635		public static long SHORT_DELAY_MS;
#	Line 320 | Line 638 | public class JSR166TestCase extends Test
638		public static long LONG_DELAY_MS;
639
640		/**
641	<	* Returns the shortest timed delay. This could
642	<	* be reimplemented to use for example a Property.
641	>	* Returns the shortest timed delay. This can be scaled up for
642	>	* slow machines using the jsr166.delay.factor system property,
643	>	* or via jtreg's -timeoutFactor: flag.
644	>	* http://openjdk.java.net/jtreg/command-help.html
645		*/
646		protected long getShortDelay() {
647	<	return 50;
647	>	return (long) (50 * delayFactor);
648		}
649
650		/**
#	Line 346 | Line 666 | public class JSR166TestCase extends Test
666		}
667
668		/**
669	<	* Returns a new Date instance representing a time delayMillis
670	<	* milliseconds in the future.
669	>	* Returns a new Date instance representing a time at least
670	>	* delayMillis milliseconds in the future.
671		*/
672		Date delayedDate(long delayMillis) {
673	<	return new Date(System.currentTimeMillis() + delayMillis);
673	>	// Add 1 because currentTimeMillis is known to round into the past.
674	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
675		}
676
677		/**
678		* The first exception encountered if any threadAssertXXX method fails.
679		*/
680		private final AtomicReference<Throwable> threadFailure
681	<	= new AtomicReference<Throwable>(null);
681	>	= new AtomicReference<>(null);
682
683		/**
684		* Records an exception so that it can be rethrown later in the test
#	Line 366 | Line 687 | public class JSR166TestCase extends Test
687		* the same test have no effect.
688		*/
689		public void threadRecordFailure(Throwable t) {
690	+	System.err.println(t);
691	+	dumpTestThreads();
692		threadFailure.compareAndSet(null, t);
693		}
694
#	Line 373 | Line 696 | public class JSR166TestCase extends Test
696		setDelays();
697		}
698
699	+	void tearDownFail(String format, Object... args) {
700	+	String msg = toString() + ": " + String.format(format, args);
701	+	System.err.println(msg);
702	+	dumpTestThreads();
703	+	throw new AssertionFailedError(msg);
704	+	}
705	+
706		/**
707		* Extra checks that get done for all test cases.
708		*
#	Line 400 | Line 730 | public class JSR166TestCase extends Test
730		}
731
732		if (Thread.interrupted())
733	<	throw new AssertionFailedError("interrupt status set in main thread");
733	>	tearDownFail("interrupt status set in main thread");
734
735		checkForkJoinPoolThreadLeaks();
736		}
737
738		/**
739	<	* Find missing try { ... } finally { joinPool(e); }
739	>	* Finds missing PoolCleaners
740		*/
741		void checkForkJoinPoolThreadLeaks() throws InterruptedException {
742	<	Thread[] survivors = new Thread[5];
742	>	Thread[] survivors = new Thread[7];
743		int count = Thread.enumerate(survivors);
744		for (int i = 0; i < count; i++) {
745		Thread thread = survivors[i];
#	Line 417 | Line 747 | public class JSR166TestCase extends Test
747		if (name.startsWith("ForkJoinPool-")) {
748		// give thread some time to terminate
749		thread.join(LONG_DELAY_MS);
750	<	if (!thread.isAlive()) continue;
751	<	thread.stop();
752	<	throw new AssertionFailedError
423	<	(String.format("Found leaked ForkJoinPool thread test=%s thread=%s%n",
424	<	toString(), name));
750	>	if (thread.isAlive())
751	>	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
752	>	thread);
753		}
754		}
755	+
756	+	if (!ForkJoinPool.commonPool()
757	+	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
758	+	tearDownFail("ForkJoin common pool thread stuck");
759		}
760
761		/**
#	Line 436 | Line 768 | public class JSR166TestCase extends Test
768		fail(reason);
769		} catch (AssertionFailedError t) {
770		threadRecordFailure(t);
771	<	fail(reason);
771	>	throw t;
772		}
773		}
774
#	Line 504 | Line 836 | public class JSR166TestCase extends Test
836		public void threadAssertEquals(Object x, Object y) {
837		try {
838		assertEquals(x, y);
839	<	} catch (AssertionFailedError t) {
840	<	threadRecordFailure(t);
841	<	throw t;
842	<	} catch (Throwable t) {
843	<	threadUnexpectedException(t);
839	>	} catch (AssertionFailedError fail) {
840	>	threadRecordFailure(fail);
841	>	throw fail;
842	>	} catch (Throwable fail) {
843	>	threadUnexpectedException(fail);
844		}
845		}
846
#	Line 520 | Line 852 | public class JSR166TestCase extends Test
852		public void threadAssertSame(Object x, Object y) {
853		try {
854		assertSame(x, y);
855	<	} catch (AssertionFailedError t) {
856	<	threadRecordFailure(t);
857	<	throw t;
855	>	} catch (AssertionFailedError fail) {
856	>	threadRecordFailure(fail);
857	>	throw fail;
858		}
859		}
860
#	Line 563 | Line 895 | public class JSR166TestCase extends Test
895		/**
896		* Delays, via Thread.sleep, for the given millisecond delay, but
897		* if the sleep is shorter than specified, may re-sleep or yield
898	<	* until time elapses.
898	>	* until time elapses.  Ensures that the given time, as measured
899	>	* by System.nanoTime(), has elapsed.
900		*/
901		static void delay(long millis) throws InterruptedException {
902	<	long startTime = System.nanoTime();
903	<	long ns = millis * 1000 * 1000;
904	<	for (;;) {
902	>	long nanos = millis * (1000 * 1000);
903	>	final long wakeupTime = System.nanoTime() + nanos;
904	>	do {
905		if (millis > 0L)
906		Thread.sleep(millis);
907		else // too short to sleep
908		Thread.yield();
909	<	long d = ns - (System.nanoTime() - startTime);
910	<	if (d > 0L)
911	<	millis = d / (1000 * 1000);
912	<	else
913	<	break;
909	>	nanos = wakeupTime - System.nanoTime();
910	>	millis = nanos / (1000 * 1000);
911	>	} while (nanos >= 0L);
912	>	}
913	>
914	>	/**
915	>	* Allows use of try-with-resources with per-test thread pools.
916	>	*/
917	>	class PoolCleaner implements AutoCloseable {
918	>	private final ExecutorService pool;
919	>	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
920	>	public void close() { joinPool(pool); }
921	>	}
922	>
923	>	/**
924	>	* An extension of PoolCleaner that has an action to release the pool.
925	>	*/
926	>	class PoolCleanerWithReleaser extends PoolCleaner {
927	>	private final Runnable releaser;
928	>	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
929	>	super(pool);
930	>	this.releaser = releaser;
931		}
932	+	public void close() {
933	+	try {
934	+	releaser.run();
935	+	} finally {
936	+	super.close();
937	+	}
938	+	}
939	+	}
940	+
941	+	PoolCleaner cleaner(ExecutorService pool) {
942	+	return new PoolCleaner(pool);
943	+	}
944	+
945	+	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
946	+	return new PoolCleanerWithReleaser(pool, releaser);
947	+	}
948	+
949	+	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
950	+	return new PoolCleanerWithReleaser(pool, releaser(latch));
951	+	}
952	+
953	+	Runnable releaser(final CountDownLatch latch) {
954	+	return new Runnable() { public void run() {
955	+	do { latch.countDown(); }
956	+	while (latch.getCount() > 0);
957	+	}};
958	+	}
959	+
960	+	PoolCleaner cleaner(ExecutorService pool, AtomicBoolean flag) {
961	+	return new PoolCleanerWithReleaser(pool, releaser(flag));
962	+	}
963	+
964	+	Runnable releaser(final AtomicBoolean flag) {
965	+	return new Runnable() { public void run() { flag.set(true); }};
966		}
967
968		/**
969		* Waits out termination of a thread pool or fails doing so.
970		*/
971	<	void joinPool(ExecutorService exec) {
971	>	void joinPool(ExecutorService pool) {
972		try {
973	<	exec.shutdown();
974	<	assertTrue("ExecutorService did not terminate in a timely manner",
975	<	exec.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS));
973	>	pool.shutdown();
974	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
975	>	try {
976	>	threadFail("ExecutorService " + pool +
977	>	" did not terminate in a timely manner");
978	>	} finally {
979	>	// last resort, for the benefit of subsequent tests
980	>	pool.shutdownNow();
981	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
982	>	}
983	>	}
984		} catch (SecurityException ok) {
985		// Allowed in case test doesn't have privs
986	<	} catch (InterruptedException ie) {
987	<	fail("Unexpected InterruptedException");
986	>	} catch (InterruptedException fail) {
987	>	threadFail("Unexpected InterruptedException");
988		}
989		}
990
991		/**
992	<	* A debugging tool to print all stack traces, as jstack does.
992	>	* Like Runnable, but with the freedom to throw anything.
993	>	* junit folks had the same idea:
994	>	* http://junit.org/junit5/docs/snapshot/api/org/junit/gen5/api/Executable.html
995		*/
996	<	static void printAllStackTraces() {
997	<	for (ThreadInfo info :
998	<	ManagementFactory.getThreadMXBean()
999	<	.dumpAllThreads(true, true))
996	>	interface Action { public void run() throws Throwable; }
997	>
998	>	/**
999	>	* Runs all the given actions in parallel, failing if any fail.
1000	>	* Useful for running multiple variants of tests that are
1001	>	* necessarily individually slow because they must block.
1002	>	*/
1003	>	void testInParallel(Action ... actions) {
1004	>	ExecutorService pool = Executors.newCachedThreadPool();
1005	>	try (PoolCleaner cleaner = cleaner(pool)) {
1006	>	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
1007	>	for (final Action action : actions)
1008	>	futures.add(pool.submit(new CheckedRunnable() {
1009	>	public void realRun() throws Throwable { action.run();}}));
1010	>	for (Future<?> future : futures)
1011	>	try {
1012	>	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
1013	>	} catch (ExecutionException ex) {
1014	>	threadUnexpectedException(ex.getCause());
1015	>	} catch (Exception ex) {
1016	>	threadUnexpectedException(ex);
1017	>	}
1018	>	}
1019	>	}
1020	>
1021	>	/**
1022	>	* A debugging tool to print stack traces of most threads, as jstack does.
1023	>	* Uninteresting threads are filtered out.
1024	>	*/
1025	>	static void dumpTestThreads() {
1026	>	SecurityManager sm = System.getSecurityManager();
1027	>	if (sm != null) {
1028	>	try {
1029	>	System.setSecurityManager(null);
1030	>	} catch (SecurityException giveUp) {
1031	>	return;
1032	>	}
1033	>	}
1034	>
1035	>	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
1036	>	System.err.println("------ stacktrace dump start ------");
1037	>	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
1038	>	final String name = info.getThreadName();
1039	>	String lockName;
1040	>	if ("Signal Dispatcher".equals(name))
1041	>	continue;
1042	>	if ("Reference Handler".equals(name)
1043	>	&& (lockName = info.getLockName()) != null
1044	>	&& lockName.startsWith("java.lang.ref.Reference$Lock"))
1045	>	continue;
1046	>	if ("Finalizer".equals(name)
1047	>	&& (lockName = info.getLockName()) != null
1048	>	&& lockName.startsWith("java.lang.ref.ReferenceQueue$Lock"))
1049	>	continue;
1050	>	if ("checkForWedgedTest".equals(name))
1051	>	continue;
1052		System.err.print(info);
1053	+	}
1054	+	System.err.println("------ stacktrace dump end ------");
1055	+
1056	+	if (sm != null) System.setSecurityManager(sm);
1057		}
1058
1059		/**
#	Line 622 | Line 1072 | public class JSR166TestCase extends Test
1072		// No need to optimize the failing case via Thread.join.
1073		delay(millis);
1074		assertTrue(thread.isAlive());
1075	<	} catch (InterruptedException ie) {
1076	<	fail("Unexpected InterruptedException");
1075	>	} catch (InterruptedException fail) {
1076	>	threadFail("Unexpected InterruptedException");
1077		}
1078		}
1079
#	Line 644 | Line 1094 | public class JSR166TestCase extends Test
1094		delay(millis);
1095		for (Thread thread : threads)
1096		assertTrue(thread.isAlive());
1097	<	} catch (InterruptedException ie) {
1098	<	fail("Unexpected InterruptedException");
1097	>	} catch (InterruptedException fail) {
1098	>	threadFail("Unexpected InterruptedException");
1099		}
1100		}
1101
#	Line 666 | Line 1116 | public class JSR166TestCase extends Test
1116		future.get(timeoutMillis, MILLISECONDS);
1117		shouldThrow();
1118		} catch (TimeoutException success) {
1119	<	} catch (Exception e) {
1120	<	threadUnexpectedException(e);
1119	>	} catch (Exception fail) {
1120	>	threadUnexpectedException(fail);
1121		} finally { future.cancel(true); }
1122		assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
1123		}
#	Line 790 | Line 1240 | public class JSR166TestCase extends Test
1240		}
1241		public void refresh() {}
1242		public String toString() {
1243	<	List<Permission> ps = new ArrayList<Permission>();
1243	>	List<Permission> ps = new ArrayList<>();
1244		for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1245		ps.add(e.nextElement());
1246		return "AdjustablePolicy with permissions " + ps;
#	Line 820 | Line 1270 | public class JSR166TestCase extends Test
1270		* Sleeps until the given time has elapsed.
1271		* Throws AssertionFailedError if interrupted.
1272		*/
1273	<	void sleep(long millis) {
1273	>	static void sleep(long millis) {
1274		try {
1275		delay(millis);
1276	<	} catch (InterruptedException ie) {
1276	>	} catch (InterruptedException fail) {
1277		AssertionFailedError afe =
1278		new AssertionFailedError("Unexpected InterruptedException");
1279	<	afe.initCause(ie);
1279	>	afe.initCause(fail);
1280		throw afe;
1281		}
1282		}
#	Line 836 | Line 1286 | public class JSR166TestCase extends Test
1286		* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1287		*/
1288		void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1289	<	long startTime = System.nanoTime();
1289	>	long startTime = 0L;
1290		for (;;) {
1291		Thread.State s = thread.getState();
1292		if (s == Thread.State.BLOCKED ||
#	Line 845 | Line 1295 | public class JSR166TestCase extends Test
1295		return;
1296		else if (s == Thread.State.TERMINATED)
1297		fail("Unexpected thread termination");
1298	+	else if (startTime == 0L)
1299	+	startTime = System.nanoTime();
1300		else if (millisElapsedSince(startTime) > timeoutMillis) {
1301		threadAssertTrue(thread.isAlive());
1302		return;
#	Line 864 | Line 1316 | public class JSR166TestCase extends Test
1316		/**
1317		* Returns the number of milliseconds since time given by
1318		* startNanoTime, which must have been previously returned from a
1319	<	* call to {@link System.nanoTime()}.
1319	>	* call to {@link System#nanoTime()}.
1320		*/
1321	<	long millisElapsedSince(long startNanoTime) {
1321	>	static long millisElapsedSince(long startNanoTime) {
1322		return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1323		}
1324
1325	+	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1326	+	//         long startTime = System.nanoTime();
1327	+	//         try {
1328	+	//             r.run();
1329	+	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1330	+	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1331	+	//             throw new AssertionFailedError("did not return promptly");
1332	+	//     }
1333	+
1334	+	//     void assertTerminatesPromptly(Runnable r) {
1335	+	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1336	+	//     }
1337	+
1338	+	/**
1339	+	* Checks that timed f.get() returns the expected value, and does not
1340	+	* wait for the timeout to elapse before returning.
1341	+	*/
1342	+	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1343	+	long startTime = System.nanoTime();
1344	+	try {
1345	+	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1346	+	} catch (Throwable fail) { threadUnexpectedException(fail); }
1347	+	if (millisElapsedSince(startTime) > timeoutMillis/2)
1348	+	throw new AssertionFailedError("timed get did not return promptly");
1349	+	}
1350	+
1351	+	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1352	+	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1353	+	}
1354	+
1355		/**
1356		* Returns a new started daemon Thread running the given runnable.
1357		*/
#	Line 888 | Line 1370 | public class JSR166TestCase extends Test
1370		void awaitTermination(Thread t, long timeoutMillis) {
1371		try {
1372		t.join(timeoutMillis);
1373	<	} catch (InterruptedException ie) {
1374	<	threadUnexpectedException(ie);
1373	>	} catch (InterruptedException fail) {
1374	>	threadUnexpectedException(fail);
1375		} finally {
1376		if (t.getState() != Thread.State.TERMINATED) {
1377		t.interrupt();
1378	<	fail("Test timed out");
1378	>	threadFail("timed out waiting for thread to terminate");
1379		}
1380		}
1381		}
#	Line 915 | Line 1397 | public class JSR166TestCase extends Test
1397		public final void run() {
1398		try {
1399		realRun();
1400	<	} catch (Throwable t) {
1401	<	threadUnexpectedException(t);
1400	>	} catch (Throwable fail) {
1401	>	threadUnexpectedException(fail);
1402		}
1403		}
1404		}
#	Line 970 | Line 1452 | public class JSR166TestCase extends Test
1452		threadShouldThrow("InterruptedException");
1453		} catch (InterruptedException success) {
1454		threadAssertFalse(Thread.interrupted());
1455	<	} catch (Throwable t) {
1456	<	threadUnexpectedException(t);
1455	>	} catch (Throwable fail) {
1456	>	threadUnexpectedException(fail);
1457		}
1458		}
1459		}
#	Line 982 | Line 1464 | public class JSR166TestCase extends Test
1464		public final T call() {
1465		try {
1466		return realCall();
1467	<	} catch (Throwable t) {
1468	<	threadUnexpectedException(t);
1467	>	} catch (Throwable fail) {
1468	>	threadUnexpectedException(fail);
1469		return null;
1470		}
1471		}
#	Line 1000 | Line 1482 | public class JSR166TestCase extends Test
1482		return result;
1483		} catch (InterruptedException success) {
1484		threadAssertFalse(Thread.interrupted());
1485	<	} catch (Throwable t) {
1486	<	threadUnexpectedException(t);
1485	>	} catch (Throwable fail) {
1486	>	threadUnexpectedException(fail);
1487		}
1488		return null;
1489		}
#	Line 1018 | Line 1500 | public class JSR166TestCase extends Test
1500		public static final String TEST_STRING = "a test string";
1501
1502		public static class StringTask implements Callable<String> {
1503	<	public String call() { return TEST_STRING; }
1503	>	final String value;
1504	>	public StringTask() { this(TEST_STRING); }
1505	>	public StringTask(String value) { this.value = value; }
1506	>	public String call() { return value; }
1507		}
1508
1509		public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
#	Line 1031 | Line 1516 | public class JSR166TestCase extends Test
1516		}};
1517		}
1518
1519	<	public Runnable awaiter(final CountDownLatch latch) {
1519	>	public Runnable countDowner(final CountDownLatch latch) {
1520		return new CheckedRunnable() {
1521		public void realRun() throws InterruptedException {
1522	<	await(latch);
1522	>	latch.countDown();
1523		}};
1524		}
1525
1526	<	public void await(CountDownLatch latch) {
1526	>	class LatchAwaiter extends CheckedRunnable {
1527	>	static final int NEW = 0;
1528	>	static final int RUNNING = 1;
1529	>	static final int DONE = 2;
1530	>	final CountDownLatch latch;
1531	>	int state = NEW;
1532	>	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1533	>	public void realRun() throws InterruptedException {
1534	>	state = 1;
1535	>	await(latch);
1536	>	state = 2;
1537	>	}
1538	>	}
1539	>
1540	>	public LatchAwaiter awaiter(CountDownLatch latch) {
1541	>	return new LatchAwaiter(latch);
1542	>	}
1543	>
1544	>	public void await(CountDownLatch latch, long timeoutMillis) {
1545		try {
1546	<	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1547	<	} catch (Throwable t) {
1548	<	threadUnexpectedException(t);
1546	>	if (!latch.await(timeoutMillis, MILLISECONDS))
1547	>	fail("timed out waiting for CountDownLatch for "
1548	>	+ (timeoutMillis/1000) + " sec");
1549	>	} catch (Throwable fail) {
1550	>	threadUnexpectedException(fail);
1551		}
1552		}
1553
1554	+	public void await(CountDownLatch latch) {
1555	+	await(latch, LONG_DELAY_MS);
1556	+	}
1557	+
1558		public void await(Semaphore semaphore) {
1559		try {
1560	<	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1561	<	} catch (Throwable t) {
1562	<	threadUnexpectedException(t);
1560	>	if (!semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS))
1561	>	fail("timed out waiting for Semaphore for "
1562	>	+ (LONG_DELAY_MS/1000) + " sec");
1563	>	} catch (Throwable fail) {
1564	>	threadUnexpectedException(fail);
1565		}
1566		}
1567
#	Line 1244 | Line 1755 | public class JSR166TestCase extends Test
1755		@Override protected final void compute() {
1756		try {
1757		realCompute();
1758	<	} catch (Throwable t) {
1759	<	threadUnexpectedException(t);
1758	>	} catch (Throwable fail) {
1759	>	threadUnexpectedException(fail);
1760		}
1761		}
1762		}
#	Line 1259 | Line 1770 | public class JSR166TestCase extends Test
1770		@Override protected final T compute() {
1771		try {
1772		return realCompute();
1773	<	} catch (Throwable t) {
1774	<	threadUnexpectedException(t);
1773	>	} catch (Throwable fail) {
1774	>	threadUnexpectedException(fail);
1775		return null;
1776		}
1777		}
#	Line 1278 | Line 1789 | public class JSR166TestCase extends Test
1789		* A CyclicBarrier that uses timed await and fails with
1790		* AssertionFailedErrors instead of throwing checked exceptions.
1791		*/
1792	<	public class CheckedBarrier extends CyclicBarrier {
1792	>	public static class CheckedBarrier extends CyclicBarrier {
1793		public CheckedBarrier(int parties) { super(parties); }
1794
1795		public int await() {
1796		try {
1797		return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1798	<	} catch (TimeoutException e) {
1798	>	} catch (TimeoutException timedOut) {
1799		throw new AssertionFailedError("timed out");
1800	<	} catch (Exception e) {
1800	>	} catch (Exception fail) {
1801		AssertionFailedError afe =
1802	<	new AssertionFailedError("Unexpected exception: " + e);
1803	<	afe.initCause(e);
1802	>	new AssertionFailedError("Unexpected exception: " + fail);
1803	>	afe.initCause(fail);
1804		throw afe;
1805		}
1806		}
#	Line 1317 | Line 1828 | public class JSR166TestCase extends Test
1828		q.remove();
1829		shouldThrow();
1830		} catch (NoSuchElementException success) {}
1831	<	} catch (InterruptedException ie) {
1321	<	threadUnexpectedException(ie);
1322	<	}
1831	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1832		}
1833
1834		void assertSerialEquals(Object x, Object y) {
#	Line 1338 | Line 1847 | public class JSR166TestCase extends Test
1847		oos.flush();
1848		oos.close();
1849		return bos.toByteArray();
1850	<	} catch (Throwable t) {
1851	<	threadUnexpectedException(t);
1850	>	} catch (Throwable fail) {
1851	>	threadUnexpectedException(fail);
1852		return new byte[0];
1853		}
1854		}
1855
1856	+	void assertImmutable(final Object o) {
1857	+	if (o instanceof Collection) {
1858	+	assertThrows(
1859	+	UnsupportedOperationException.class,
1860	+	new Runnable() { public void run() {
1861	+	((Collection) o).add(null);}});
1862	+	}
1863	+	}
1864	+
1865		@SuppressWarnings("unchecked")
1866		<T> T serialClone(T o) {
1867		try {
1868		ObjectInputStream ois = new ObjectInputStream
1869		(new ByteArrayInputStream(serialBytes(o)));
1870		T clone = (T) ois.readObject();
1871	+	if (o == clone) assertImmutable(o);
1872		assertSame(o.getClass(), clone.getClass());
1873		return clone;
1874	<	} catch (Throwable t) {
1875	<	threadUnexpectedException(t);
1874	>	} catch (Throwable fail) {
1875	>	threadUnexpectedException(fail);
1876		return null;
1877		}
1878		}
1879
1880	+	/**
1881	+	* A version of serialClone that leaves error handling (for
1882	+	* e.g. NotSerializableException) up to the caller.
1883	+	*/
1884	+	@SuppressWarnings("unchecked")
1885	+	<T> T serialClonePossiblyFailing(T o)
1886	+	throws ReflectiveOperationException, java.io.IOException {
1887	+	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1888	+	ObjectOutputStream oos = new ObjectOutputStream(bos);
1889	+	oos.writeObject(o);
1890	+	oos.flush();
1891	+	oos.close();
1892	+	ObjectInputStream ois = new ObjectInputStream
1893	+	(new ByteArrayInputStream(bos.toByteArray()));
1894	+	T clone = (T) ois.readObject();
1895	+	if (o == clone) assertImmutable(o);
1896	+	assertSame(o.getClass(), clone.getClass());
1897	+	return clone;
1898	+	}
1899	+
1900	+	/**
1901	+	* If o implements Cloneable and has a public clone method,
1902	+	* returns a clone of o, else null.
1903	+	*/
1904	+	@SuppressWarnings("unchecked")
1905	+	<T> T cloneableClone(T o) {
1906	+	if (!(o instanceof Cloneable)) return null;
1907	+	final T clone;
1908	+	try {
1909	+	clone = (T) o.getClass().getMethod("clone").invoke(o);
1910	+	} catch (NoSuchMethodException ok) {
1911	+	return null;
1912	+	} catch (ReflectiveOperationException unexpected) {
1913	+	throw new Error(unexpected);
1914	+	}
1915	+	assertNotSame(o, clone); // not 100% guaranteed by spec
1916	+	assertSame(o.getClass(), clone.getClass());
1917	+	return clone;
1918	+	}
1919	+
1920		public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1921		Runnable... throwingActions) {
1922		for (Runnable throwingAction : throwingActions) {
#	Line 1378 | Line 1937 | public class JSR166TestCase extends Test
1937		shouldThrow(expectedExceptionClass.getName());
1938		}
1939		}
1940	+
1941	+	public void assertIteratorExhausted(Iterator<?> it) {
1942	+	try {
1943	+	it.next();
1944	+	shouldThrow();
1945	+	} catch (NoSuchElementException success) {}
1946	+	assertFalse(it.hasNext());
1947	+	}
1948	+
1949	+	public <T> Callable<T> callableThrowing(final Exception ex) {
1950	+	return new Callable<T>() { public T call() throws Exception { throw ex; }};
1951	+	}
1952	+
1953	+	public Runnable runnableThrowing(final RuntimeException ex) {
1954	+	return new Runnable() { public void run() { throw ex; }};
1955	+	}
1956	+
1957	+	/** A reusable thread pool to be shared by tests. */
1958	+	static final ExecutorService cachedThreadPool =
1959	+	new ThreadPoolExecutor(0, Integer.MAX_VALUE,
1960	+	1000L, MILLISECONDS,
1961	+	new SynchronousQueue<Runnable>());
1962	+
1963	+	static <T> void shuffle(T[] array) {
1964	+	Collections.shuffle(Arrays.asList(array), ThreadLocalRandom.current());
1965	+	}
1966		}

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