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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.61 by jsr166, Mon Oct 11 03:54:10 2010 UTC vs.
Revision 1.222 by jsr166, Fri May 12 18:12:51 2017 UTC

#	Line 1 | Line 1
1		/*
2	<	* Written by Doug Lea with assistance from members of JCP JSR-166
3	<	* Expert Group and released to the public domain, as explained at
4	<	* http://creativecommons.org/licenses/publicdomain
2	>	* Written by Doug Lea and Martin Buchholz with assistance from
3	>	* members of JCP JSR-166 Expert Group and released to the public
4	>	* domain, as explained at
5	>	* http://creativecommons.org/publicdomain/zero/1.0/
6		* Other contributors include Andrew Wright, Jeffrey Hayes,
7		* Pat Fisher, Mike Judd.
8		*/
9
10	<	import junit.framework.*;
11	<	import java.util.PropertyPermission;
12	<	import java.util.concurrent.*;
13	<	import java.util.concurrent.atomic.AtomicReference;
10	>	/*
11	>	* @test
12	>	* @summary JSR-166 tck tests, in a number of variations.
13	>	*          The first is the conformance testing variant,
14	>	*          while others also test implementation details.
15	>	* @build *
16	>	* @modules java.management
17	>	* @run junit/othervm/timeout=1000 JSR166TestCase
18	>	* @run junit/othervm/timeout=1000
19	>	*      --add-opens java.base/java.util.concurrent=ALL-UNNAMED
20	>	*      --add-opens java.base/java.lang=ALL-UNNAMED
21	>	*      -Djsr166.testImplementationDetails=true
22	>	*      JSR166TestCase
23	>	* @run junit/othervm/timeout=1000
24	>	*      --add-opens java.base/java.util.concurrent=ALL-UNNAMED
25	>	*      --add-opens java.base/java.lang=ALL-UNNAMED
26	>	*      -Djsr166.testImplementationDetails=true
27	>	*      -Djava.util.concurrent.ForkJoinPool.common.parallelism=0
28	>	*      JSR166TestCase
29	>	* @run junit/othervm/timeout=1000
30	>	*      --add-opens java.base/java.util.concurrent=ALL-UNNAMED
31	>	*      --add-opens java.base/java.lang=ALL-UNNAMED
32	>	*      -Djsr166.testImplementationDetails=true
33	>	*      -Djava.util.concurrent.ForkJoinPool.common.parallelism=1
34	>	*      -Djava.util.secureRandomSeed=true
35	>	*      JSR166TestCase
36	>	* @run junit/othervm/timeout=1000/policy=tck.policy
37	>	*      --add-opens java.base/java.util.concurrent=ALL-UNNAMED
38	>	*      --add-opens java.base/java.lang=ALL-UNNAMED
39	>	*      -Djsr166.testImplementationDetails=true
40	>	*      JSR166TestCase
41	>	*/
42	>
43		import static java.util.concurrent.TimeUnit.MILLISECONDS;
44	+	import static java.util.concurrent.TimeUnit.MINUTES;
45	+	import static java.util.concurrent.TimeUnit.NANOSECONDS;
46	+
47	+	import java.io.ByteArrayInputStream;
48	+	import java.io.ByteArrayOutputStream;
49	+	import java.io.ObjectInputStream;
50	+	import java.io.ObjectOutputStream;
51	+	import java.lang.management.ManagementFactory;
52	+	import java.lang.management.ThreadInfo;
53	+	import java.lang.management.ThreadMXBean;
54	+	import java.lang.reflect.Constructor;
55	+	import java.lang.reflect.Method;
56	+	import java.lang.reflect.Modifier;
57		import java.security.CodeSource;
58		import java.security.Permission;
59		import java.security.PermissionCollection;
#	Line 18 | Line 61 | 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.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 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 29 | 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 51 | 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>
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
72	<	* 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 96 | Line 175 | public class JSR166TestCase extends Test
175		private static final boolean useSecurityManager =
176		Boolean.getBoolean("jsr166.useSecurityManager");
177
178	+	protected static final boolean expensiveTests =
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.
#	Line 110 | Line 199 | public class JSR166TestCase extends Test
199		private static final long profileThreshold =
200		Long.getLong("jsr166.profileThreshold", 100);
201
202	+	/**
203	+	* The number of repetitions per test (for tickling rare bugs).
204	+	*/
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	+	//             java.util.regex.Matcher matcher
304	+	//               = Pattern.compile("model name\\s*: (.*)")
305	+	//                 .matcher(new String(
306	+	//                     java.nio.file.Files.readAllBytes(
307	+	//                         java.nio.file.Paths.get("/proc/cpuinfo")), "UTF-8"));
308	+	//             matcher.find();
309	+	//             return matcher.group(1);
310	+	//         } catch (Exception ex) { return null; }
311	+	//     }
312	+
313	+	public void runBare() throws Throwable {
314	+	currentTestCase = this;
315	+	if (methodFilter == null
316	+	|| methodFilter.matcher(toString()).find())
317	+	super.runBare();
318	+	}
319	+
320		protected void runTest() throws Throwable {
321	<	if (profileTests)
322	<	runTestProfiled();
323	<	else
324	<	super.runTest();
321	>	for (int i = 0; i < runsPerTest; i++) {
322	>	// currentRun = i;
323	>	if (profileTests)
324	>	runTestProfiled();
325	>	else
326	>	super.runTest();
327	>	}
328		}
329
330		protected void runTestProfiled() throws Throwable {
331	<	long t0 = System.nanoTime();
332	<	try {
331	>	for (int i = 0; i < 2; i++) {
332	>	long startTime = System.nanoTime();
333		super.runTest();
334	<	} finally {
335	<	long elapsedMillis =
336	<	(System.nanoTime() - t0) / (1000L * 1000L);
337	<	if (elapsedMillis >= profileThreshold)
334	>	long elapsedMillis = millisElapsedSince(startTime);
335	>	if (elapsedMillis < profileThreshold)
336	>	break;
337	>	// Never report first run of any test; treat it as a
338	>	// warmup run, notably to trigger all needed classloading,
339	>	if (i > 0)
340		System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
341		}
342		}
343	<
343	>
344		/**
345	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
345	>	* Runs all JSR166 unit tests using junit.textui.TestRunner.
346		*/
347		public static void main(String[] args) {
348	+	main(suite(), args);
349	+	}
350	+
351	+	static class PithyResultPrinter extends junit.textui.ResultPrinter {
352	+	PithyResultPrinter(java.io.PrintStream writer) { super(writer); }
353	+	long runTime;
354	+	public void startTest(Test test) {}
355	+	protected void printHeader(long runTime) {
356	+	this.runTime = runTime; // defer printing for later
357	+	}
358	+	protected void printFooter(TestResult result) {
359	+	if (result.wasSuccessful()) {
360	+	getWriter().println("OK (" + result.runCount() + " tests)"
361	+	+ "  Time: " + elapsedTimeAsString(runTime));
362	+	} else {
363	+	getWriter().println("Time: " + elapsedTimeAsString(runTime));
364	+	super.printFooter(result);
365	+	}
366	+	}
367	+	}
368	+
369	+	/**
370	+	* Returns a TestRunner that doesn't bother with unnecessary
371	+	* fluff, like printing a "." for each test case.
372	+	*/
373	+	static junit.textui.TestRunner newPithyTestRunner() {
374	+	junit.textui.TestRunner runner = new junit.textui.TestRunner();
375	+	runner.setPrinter(new PithyResultPrinter(System.out));
376	+	return runner;
377	+	}
378	+
379	+	/**
380	+	* Runs all unit tests in the given test suite.
381	+	* Actual behavior influenced by jsr166.* system properties.
382	+	*/
383	+	static void main(Test suite, String[] args) {
384		if (useSecurityManager) {
385		System.err.println("Setting a permissive security manager");
386		Policy.setPolicy(permissivePolicy());
387		System.setSecurityManager(new SecurityManager());
388		}
389	<	int iters = (args.length == 0) ? 1 : Integer.parseInt(args[0]);
390	<
391	<	Test s = suite();
392	<	for (int i = 0; i < iters; ++i) {
145	<	junit.textui.TestRunner.run(s);
389	>	for (int i = 0; i < suiteRuns; i++) {
390	>	TestResult result = newPithyTestRunner().doRun(suite);
391	>	if (!result.wasSuccessful())
392	>	System.exit(1);
393		System.gc();
394		System.runFinalization();
395		}
149	–	System.exit(0);
396		}
397
398		public static TestSuite newTestSuite(Object... suiteOrClasses) {
#	Line 162 | Line 408 | public class JSR166TestCase extends Test
408		return suite;
409		}
410
411	+	public static void addNamedTestClasses(TestSuite suite,
412	+	String... testClassNames) {
413	+	for (String testClassName : testClassNames) {
414	+	try {
415	+	Class<?> testClass = Class.forName(testClassName);
416	+	Method m = testClass.getDeclaredMethod("suite",
417	+	new Class<?>[0]);
418	+	suite.addTest(newTestSuite((Test)m.invoke(null)));
419	+	} catch (Exception e) {
420	+	throw new Error("Missing test class", e);
421	+	}
422	+	}
423	+	}
424	+
425	+	public static final double JAVA_CLASS_VERSION;
426	+	public static final String JAVA_SPECIFICATION_VERSION;
427	+	static {
428	+	try {
429	+	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
430	+	new java.security.PrivilegedAction<Double>() {
431	+	public Double run() {
432	+	return Double.valueOf(System.getProperty("java.class.version"));}});
433	+	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
434	+	new java.security.PrivilegedAction<String>() {
435	+	public String run() {
436	+	return System.getProperty("java.specification.version");}});
437	+	} catch (Throwable t) {
438	+	throw new Error(t);
439	+	}
440	+	}
441	+
442	+	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
443	+	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
444	+	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
445	+	public static boolean atLeastJava9() {
446	+	return JAVA_CLASS_VERSION >= 53.0
447	+	// As of 2015-09, java9 still uses 52.0 class file version
448	+	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?(9|[0-9][0-9])$");
449	+	}
450	+	public static boolean atLeastJava10() {
451	+	return JAVA_CLASS_VERSION >= 54.0
452	+	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?[0-9][0-9]$");
453	+	}
454	+
455		/**
456		* Collects all JSR166 unit tests as one suite.
457		*/
458		public static Test suite() {
459	<	return newTestSuite(
459	>	// Java7+ test classes
460	>	TestSuite suite = newTestSuite(
461		ForkJoinPoolTest.suite(),
462		ForkJoinTaskTest.suite(),
463		RecursiveActionTest.suite(),
#	Line 180 | Line 471 | public class JSR166TestCase extends Test
471		AbstractQueuedLongSynchronizerTest.suite(),
472		ArrayBlockingQueueTest.suite(),
473		ArrayDequeTest.suite(),
474	+	ArrayListTest.suite(),
475		AtomicBooleanTest.suite(),
476		AtomicIntegerArrayTest.suite(),
477		AtomicIntegerFieldUpdaterTest.suite(),
#	Line 202 | Line 494 | public class JSR166TestCase extends Test
494		CopyOnWriteArrayListTest.suite(),
495		CopyOnWriteArraySetTest.suite(),
496		CountDownLatchTest.suite(),
497	+	CountedCompleterTest.suite(),
498		CyclicBarrierTest.suite(),
499		DelayQueueTest.suite(),
500		EntryTest.suite(),
#	Line 230 | Line 523 | public class JSR166TestCase extends Test
523		TreeMapTest.suite(),
524		TreeSetTest.suite(),
525		TreeSubMapTest.suite(),
526	<	TreeSubSetTest.suite());
526	>	TreeSubSetTest.suite(),
527	>	VectorTest.suite());
528	>
529	>	// Java8+ test classes
530	>	if (atLeastJava8()) {
531	>	String[] java8TestClassNames = {
532	>	"ArrayDeque8Test",
533	>	"Atomic8Test",
534	>	"CompletableFutureTest",
535	>	"ConcurrentHashMap8Test",
536	>	"CountedCompleter8Test",
537	>	"DoubleAccumulatorTest",
538	>	"DoubleAdderTest",
539	>	"ForkJoinPool8Test",
540	>	"ForkJoinTask8Test",
541	>	"LinkedBlockingDeque8Test",
542	>	"LinkedBlockingQueue8Test",
543	>	"LongAccumulatorTest",
544	>	"LongAdderTest",
545	>	"SplittableRandomTest",
546	>	"StampedLockTest",
547	>	"SubmissionPublisherTest",
548	>	"ThreadLocalRandom8Test",
549	>	"TimeUnit8Test",
550	>	};
551	>	addNamedTestClasses(suite, java8TestClassNames);
552	>	}
553	>
554	>	// Java9+ test classes
555	>	if (atLeastJava9()) {
556	>	String[] java9TestClassNames = {
557	>	"AtomicBoolean9Test",
558	>	"AtomicInteger9Test",
559	>	"AtomicIntegerArray9Test",
560	>	"AtomicLong9Test",
561	>	"AtomicLongArray9Test",
562	>	"AtomicReference9Test",
563	>	"AtomicReferenceArray9Test",
564	>	"ExecutorCompletionService9Test",
565	>	"ForkJoinPool9Test",
566	>	};
567	>	addNamedTestClasses(suite, java9TestClassNames);
568	>	}
569	>
570	>	return suite;
571	>	}
572	>
573	>	/** Returns list of junit-style test method names in given class. */
574	>	public static ArrayList<String> testMethodNames(Class<?> testClass) {
575	>	Method[] methods = testClass.getDeclaredMethods();
576	>	ArrayList<String> names = new ArrayList<>(methods.length);
577	>	for (Method method : methods) {
578	>	if (method.getName().startsWith("test")
579	>	&& Modifier.isPublic(method.getModifiers())
580	>	// method.getParameterCount() requires jdk8+
581	>	&& method.getParameterTypes().length == 0) {
582	>	names.add(method.getName());
583	>	}
584	>	}
585	>	return names;
586	>	}
587	>
588	>	/**
589	>	* Returns junit-style testSuite for the given test class, but
590	>	* parameterized by passing extra data to each test.
591	>	*/
592	>	public static <ExtraData> Test parameterizedTestSuite
593	>	(Class<? extends JSR166TestCase> testClass,
594	>	Class<ExtraData> dataClass,
595	>	ExtraData data) {
596	>	try {
597	>	TestSuite suite = new TestSuite();
598	>	Constructor c =
599	>	testClass.getDeclaredConstructor(dataClass, String.class);
600	>	for (String methodName : testMethodNames(testClass))
601	>	suite.addTest((Test) c.newInstance(data, methodName));
602	>	return suite;
603	>	} catch (Exception e) {
604	>	throw new Error(e);
605	>	}
606	>	}
607	>
608	>	/**
609	>	* Returns junit-style testSuite for the jdk8 extension of the
610	>	* given test class, but parameterized by passing extra data to
611	>	* each test.  Uses reflection to allow compilation in jdk7.
612	>	*/
613	>	public static <ExtraData> Test jdk8ParameterizedTestSuite
614	>	(Class<? extends JSR166TestCase> testClass,
615	>	Class<ExtraData> dataClass,
616	>	ExtraData data) {
617	>	if (atLeastJava8()) {
618	>	String name = testClass.getName();
619	>	String name8 = name.replaceAll("Test$", "8Test");
620	>	if (name.equals(name8)) throw new Error(name);
621	>	try {
622	>	return (Test)
623	>	Class.forName(name8)
624	>	.getMethod("testSuite", new Class[] { dataClass })
625	>	.invoke(null, data);
626	>	} catch (Exception e) {
627	>	throw new Error(e);
628	>	}
629	>	} else {
630	>	return new TestSuite();
631	>	}
632		}
633
634	+	// Delays for timing-dependent tests, in milliseconds.
635
636		public static long SHORT_DELAY_MS;
637		public static long SMALL_DELAY_MS;
638		public static long MEDIUM_DELAY_MS;
639		public static long LONG_DELAY_MS;
640
242	–
641		/**
642	<	* Returns the shortest timed delay. This could
643	<	* be reimplemented to use for example a Property.
642	>	* Returns the shortest timed delay. This can be scaled up for
643	>	* slow machines using the jsr166.delay.factor system property,
644	>	* or via jtreg's -timeoutFactor: flag.
645	>	* http://openjdk.java.net/jtreg/command-help.html
646		*/
647		protected long getShortDelay() {
648	<	return 50;
648	>	return (long) (50 * delayFactor);
649		}
650
251	–
651		/**
652		* Sets delays as multiples of SHORT_DELAY.
653		*/
#	Line 256 | Line 655 | public class JSR166TestCase extends Test
655		SHORT_DELAY_MS = getShortDelay();
656		SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
657		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
658	<	LONG_DELAY_MS   = SHORT_DELAY_MS * 50;
658	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
659	>	}
660	>
661	>	/**
662	>	* Returns a timeout in milliseconds to be used in tests that
663	>	* verify that operations block or time out.
664	>	*/
665	>	long timeoutMillis() {
666	>	return SHORT_DELAY_MS / 4;
667	>	}
668	>
669	>	/**
670	>	* Returns a new Date instance representing a time at least
671	>	* delayMillis milliseconds in the future.
672	>	*/
673	>	Date delayedDate(long delayMillis) {
674	>	// Add 1 because currentTimeMillis is known to round into the past.
675	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
676		}
677
678		/**
679		* The first exception encountered if any threadAssertXXX method fails.
680		*/
681		private final AtomicReference<Throwable> threadFailure
682	<	= new AtomicReference<Throwable>(null);
682	>	= new AtomicReference<>(null);
683
684		/**
685		* Records an exception so that it can be rethrown later in the test
#	Line 272 | Line 688 | public class JSR166TestCase extends Test
688		* the same test have no effect.
689		*/
690		public void threadRecordFailure(Throwable t) {
691	+	System.err.println(t);
692	+	dumpTestThreads();
693		threadFailure.compareAndSet(null, t);
694		}
695
#	Line 279 | Line 697 | public class JSR166TestCase extends Test
697		setDelays();
698		}
699
700	+	void tearDownFail(String format, Object... args) {
701	+	String msg = toString() + ": " + String.format(format, args);
702	+	System.err.println(msg);
703	+	dumpTestThreads();
704	+	throw new AssertionFailedError(msg);
705	+	}
706	+
707		/**
708	+	* Extra checks that get done for all test cases.
709	+	*
710		* Triggers test case failure if any thread assertions have failed,
711		* by rethrowing, in the test harness thread, any exception recorded
712		* earlier by threadRecordFailure.
713	+	*
714	+	* Triggers test case failure if interrupt status is set in the main thread.
715		*/
716		public void tearDown() throws Exception {
717	<	Throwable t = threadFailure.get();
717	>	Throwable t = threadFailure.getAndSet(null);
718		if (t != null) {
719		if (t instanceof Error)
720		throw (Error) t;
#	Line 300 | Line 729 | public class JSR166TestCase extends Test
729		throw afe;
730		}
731		}
732	+
733	+	if (Thread.interrupted())
734	+	tearDownFail("interrupt status set in main thread");
735	+
736	+	checkForkJoinPoolThreadLeaks();
737	+	}
738	+
739	+	/**
740	+	* Finds missing PoolCleaners
741	+	*/
742	+	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
743	+	Thread[] survivors = new Thread[7];
744	+	int count = Thread.enumerate(survivors);
745	+	for (int i = 0; i < count; i++) {
746	+	Thread thread = survivors[i];
747	+	String name = thread.getName();
748	+	if (name.startsWith("ForkJoinPool-")) {
749	+	// give thread some time to terminate
750	+	thread.join(LONG_DELAY_MS);
751	+	if (thread.isAlive())
752	+	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
753	+	thread);
754	+	}
755	+	}
756	+
757	+	if (!ForkJoinPool.commonPool()
758	+	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
759	+	tearDownFail("ForkJoin common pool thread stuck");
760		}
761
762		/**
#	Line 312 | Line 769 | public class JSR166TestCase extends Test
769		fail(reason);
770		} catch (AssertionFailedError t) {
771		threadRecordFailure(t);
772	<	fail(reason);
772	>	throw t;
773		}
774		}
775
#	Line 380 | Line 837 | public class JSR166TestCase extends Test
837		public void threadAssertEquals(Object x, Object y) {
838		try {
839		assertEquals(x, y);
840	<	} catch (AssertionFailedError t) {
841	<	threadRecordFailure(t);
842	<	throw t;
843	<	} catch (Throwable t) {
844	<	threadUnexpectedException(t);
840	>	} catch (AssertionFailedError fail) {
841	>	threadRecordFailure(fail);
842	>	throw fail;
843	>	} catch (Throwable fail) {
844	>	threadUnexpectedException(fail);
845		}
846		}
847
#	Line 396 | Line 853 | public class JSR166TestCase extends Test
853		public void threadAssertSame(Object x, Object y) {
854		try {
855		assertSame(x, y);
856	<	} catch (AssertionFailedError t) {
857	<	threadRecordFailure(t);
858	<	throw t;
856	>	} catch (AssertionFailedError fail) {
857	>	threadRecordFailure(fail);
858	>	throw fail;
859		}
860		}
861
#	Line 431 | Line 888 | public class JSR166TestCase extends Test
888		else {
889		AssertionFailedError afe =
890		new AssertionFailedError("unexpected exception: " + t);
891	<	t.initCause(t);
891	>	afe.initCause(t);
892		throw afe;
893		}
894		}
895
896		/**
897	+	* Delays, via Thread.sleep, for the given millisecond delay, but
898	+	* if the sleep is shorter than specified, may re-sleep or yield
899	+	* until time elapses.  Ensures that the given time, as measured
900	+	* by System.nanoTime(), has elapsed.
901	+	*/
902	+	static void delay(long millis) throws InterruptedException {
903	+	long nanos = millis * (1000 * 1000);
904	+	final long wakeupTime = System.nanoTime() + nanos;
905	+	do {
906	+	if (millis > 0L)
907	+	Thread.sleep(millis);
908	+	else // too short to sleep
909	+	Thread.yield();
910	+	nanos = wakeupTime - System.nanoTime();
911	+	millis = nanos / (1000 * 1000);
912	+	} while (nanos >= 0L);
913	+	}
914	+
915	+	/**
916	+	* Allows use of try-with-resources with per-test thread pools.
917	+	*/
918	+	class PoolCleaner implements AutoCloseable {
919	+	private final ExecutorService pool;
920	+	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
921	+	public void close() { joinPool(pool); }
922	+	}
923	+
924	+	/**
925	+	* An extension of PoolCleaner that has an action to release the pool.
926	+	*/
927	+	class PoolCleanerWithReleaser extends PoolCleaner {
928	+	private final Runnable releaser;
929	+	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
930	+	super(pool);
931	+	this.releaser = releaser;
932	+	}
933	+	public void close() {
934	+	try {
935	+	releaser.run();
936	+	} finally {
937	+	super.close();
938	+	}
939	+	}
940	+	}
941	+
942	+	PoolCleaner cleaner(ExecutorService pool) {
943	+	return new PoolCleaner(pool);
944	+	}
945	+
946	+	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
947	+	return new PoolCleanerWithReleaser(pool, releaser);
948	+	}
949	+
950	+	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
951	+	return new PoolCleanerWithReleaser(pool, releaser(latch));
952	+	}
953	+
954	+	Runnable releaser(final CountDownLatch latch) {
955	+	return new Runnable() { public void run() {
956	+	do { latch.countDown(); }
957	+	while (latch.getCount() > 0);
958	+	}};
959	+	}
960	+
961	+	PoolCleaner cleaner(ExecutorService pool, AtomicBoolean flag) {
962	+	return new PoolCleanerWithReleaser(pool, releaser(flag));
963	+	}
964	+
965	+	Runnable releaser(final AtomicBoolean flag) {
966	+	return new Runnable() { public void run() { flag.set(true); }};
967	+	}
968	+
969	+	/**
970		* Waits out termination of a thread pool or fails doing so.
971		*/
972	<	public void joinPool(ExecutorService exec) {
972	>	void joinPool(ExecutorService pool) {
973		try {
974	<	exec.shutdown();
975	<	assertTrue("ExecutorService did not terminate in a timely manner",
976	<	exec.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
974	>	pool.shutdown();
975	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
976	>	try {
977	>	threadFail("ExecutorService " + pool +
978	>	" did not terminate in a timely manner");
979	>	} finally {
980	>	// last resort, for the benefit of subsequent tests
981	>	pool.shutdownNow();
982	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
983	>	}
984	>	}
985		} catch (SecurityException ok) {
986		// Allowed in case test doesn't have privs
987	<	} catch (InterruptedException ie) {
988	<	fail("Unexpected InterruptedException");
987	>	} catch (InterruptedException fail) {
988	>	threadFail("Unexpected InterruptedException");
989	>	}
990	>	}
991	>
992	>	/**
993	>	* Like Runnable, but with the freedom to throw anything.
994	>	* junit folks had the same idea:
995	>	* http://junit.org/junit5/docs/snapshot/api/org/junit/gen5/api/Executable.html
996	>	*/
997	>	interface Action { public void run() throws Throwable; }
998	>
999	>	/**
1000	>	* Runs all the given actions in parallel, failing if any fail.
1001	>	* Useful for running multiple variants of tests that are
1002	>	* necessarily individually slow because they must block.
1003	>	*/
1004	>	void testInParallel(Action ... actions) {
1005	>	ExecutorService pool = Executors.newCachedThreadPool();
1006	>	try (PoolCleaner cleaner = cleaner(pool)) {
1007	>	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
1008	>	for (final Action action : actions)
1009	>	futures.add(pool.submit(new CheckedRunnable() {
1010	>	public void realRun() throws Throwable { action.run();}}));
1011	>	for (Future<?> future : futures)
1012	>	try {
1013	>	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
1014	>	} catch (ExecutionException ex) {
1015	>	threadUnexpectedException(ex.getCause());
1016	>	} catch (Exception ex) {
1017	>	threadUnexpectedException(ex);
1018	>	}
1019	>	}
1020	>	}
1021	>
1022	>	/**
1023	>	* A debugging tool to print stack traces of most threads, as jstack does.
1024	>	* Uninteresting threads are filtered out.
1025	>	*/
1026	>	static void dumpTestThreads() {
1027	>	SecurityManager sm = System.getSecurityManager();
1028	>	if (sm != null) {
1029	>	try {
1030	>	System.setSecurityManager(null);
1031	>	} catch (SecurityException giveUp) {
1032	>	return;
1033	>	}
1034	>	}
1035	>
1036	>	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
1037	>	System.err.println("------ stacktrace dump start ------");
1038	>	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
1039	>	final String name = info.getThreadName();
1040	>	String lockName;
1041	>	if ("Signal Dispatcher".equals(name))
1042	>	continue;
1043	>	if ("Reference Handler".equals(name)
1044	>	&& (lockName = info.getLockName()) != null
1045	>	&& lockName.startsWith("java.lang.ref.Reference$Lock"))
1046	>	continue;
1047	>	if ("Finalizer".equals(name)
1048	>	&& (lockName = info.getLockName()) != null
1049	>	&& lockName.startsWith("java.lang.ref.ReferenceQueue$Lock"))
1050	>	continue;
1051	>	if ("checkForWedgedTest".equals(name))
1052	>	continue;
1053	>	System.err.print(info);
1054	>	}
1055	>	System.err.println("------ stacktrace dump end ------");
1056	>
1057	>	if (sm != null) System.setSecurityManager(sm);
1058	>	}
1059	>
1060	>	/**
1061	>	* Checks that thread does not terminate within the default
1062	>	* millisecond delay of {@code timeoutMillis()}.
1063	>	*/
1064	>	void assertThreadStaysAlive(Thread thread) {
1065	>	assertThreadStaysAlive(thread, timeoutMillis());
1066	>	}
1067	>
1068	>	/**
1069	>	* Checks that thread does not terminate within the given millisecond delay.
1070	>	*/
1071	>	void assertThreadStaysAlive(Thread thread, long millis) {
1072	>	try {
1073	>	// No need to optimize the failing case via Thread.join.
1074	>	delay(millis);
1075	>	assertTrue(thread.isAlive());
1076	>	} catch (InterruptedException fail) {
1077	>	threadFail("Unexpected InterruptedException");
1078	>	}
1079	>	}
1080	>
1081	>	/**
1082	>	* Checks that the threads do not terminate within the default
1083	>	* millisecond delay of {@code timeoutMillis()}.
1084	>	*/
1085	>	void assertThreadsStayAlive(Thread... threads) {
1086	>	assertThreadsStayAlive(timeoutMillis(), threads);
1087	>	}
1088	>
1089	>	/**
1090	>	* Checks that the threads do not terminate within the given millisecond delay.
1091	>	*/
1092	>	void assertThreadsStayAlive(long millis, Thread... threads) {
1093	>	try {
1094	>	// No need to optimize the failing case via Thread.join.
1095	>	delay(millis);
1096	>	for (Thread thread : threads)
1097	>	assertTrue(thread.isAlive());
1098	>	} catch (InterruptedException fail) {
1099	>	threadFail("Unexpected InterruptedException");
1100		}
1101		}
1102
1103	+	/**
1104	+	* Checks that future.get times out, with the default timeout of
1105	+	* {@code timeoutMillis()}.
1106	+	*/
1107	+	void assertFutureTimesOut(Future future) {
1108	+	assertFutureTimesOut(future, timeoutMillis());
1109	+	}
1110	+
1111	+	/**
1112	+	* Checks that future.get times out, with the given millisecond timeout.
1113	+	*/
1114	+	void assertFutureTimesOut(Future future, long timeoutMillis) {
1115	+	long startTime = System.nanoTime();
1116	+	try {
1117	+	future.get(timeoutMillis, MILLISECONDS);
1118	+	shouldThrow();
1119	+	} catch (TimeoutException success) {
1120	+	} catch (Exception fail) {
1121	+	threadUnexpectedException(fail);
1122	+	} finally { future.cancel(true); }
1123	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
1124	+	}
1125
1126		/**
1127		* Fails with message "should throw exception".
#	Line 467 | Line 1138 | public class JSR166TestCase extends Test
1138		}
1139
1140		/**
1141	+	* The maximum number of consecutive spurious wakeups we should
1142	+	* tolerate (from APIs like LockSupport.park) before failing a test.
1143	+	*/
1144	+	static final int MAX_SPURIOUS_WAKEUPS = 10;
1145	+
1146	+	/**
1147		* The number of elements to place in collections, arrays, etc.
1148		*/
1149		public static final int SIZE = 20;
#	Line 491 | Line 1168 | public class JSR166TestCase extends Test
1168		public static final Integer m6  = new Integer(-6);
1169		public static final Integer m10 = new Integer(-10);
1170
494	–
1171		/**
1172		* Runs Runnable r with a security policy that permits precisely
1173		* the specified permissions.  If there is no current security
#	Line 503 | Line 1179 | public class JSR166TestCase extends Test
1179		SecurityManager sm = System.getSecurityManager();
1180		if (sm == null) {
1181		r.run();
1182	+	}
1183	+	runWithSecurityManagerWithPermissions(r, permissions);
1184	+	}
1185	+
1186	+	/**
1187	+	* Runs Runnable r with a security policy that permits precisely
1188	+	* the specified permissions.  If there is no current security
1189	+	* manager, a temporary one is set for the duration of the
1190	+	* Runnable.  We require that any security manager permit
1191	+	* getPolicy/setPolicy.
1192	+	*/
1193	+	public void runWithSecurityManagerWithPermissions(Runnable r,
1194	+	Permission... permissions) {
1195	+	SecurityManager sm = System.getSecurityManager();
1196	+	if (sm == null) {
1197		Policy savedPolicy = Policy.getPolicy();
1198		try {
1199		Policy.setPolicy(permissivePolicy());
1200		System.setSecurityManager(new SecurityManager());
1201	<	runWithPermissions(r, permissions);
1201	>	runWithSecurityManagerWithPermissions(r, permissions);
1202		} finally {
1203		System.setSecurityManager(null);
1204		Policy.setPolicy(savedPolicy);
#	Line 555 | Line 1246 | public class JSR166TestCase extends Test
1246		return perms.implies(p);
1247		}
1248		public void refresh() {}
1249	+	public String toString() {
1250	+	List<Permission> ps = new ArrayList<>();
1251	+	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1252	+	ps.add(e.nextElement());
1253	+	return "AdjustablePolicy with permissions " + ps;
1254	+	}
1255		}
1256
1257		/**
#	Line 580 | Line 1277 | public class JSR166TestCase extends Test
1277		* Sleeps until the given time has elapsed.
1278		* Throws AssertionFailedError if interrupted.
1279		*/
1280	<	void sleep(long millis) {
1280	>	static void sleep(long millis) {
1281		try {
1282	<	Thread.sleep(millis);
1283	<	} catch (InterruptedException ie) {
1282	>	delay(millis);
1283	>	} catch (InterruptedException fail) {
1284		AssertionFailedError afe =
1285		new AssertionFailedError("Unexpected InterruptedException");
1286	<	afe.initCause(ie);
1286	>	afe.initCause(fail);
1287		throw afe;
1288		}
1289		}
1290
1291		/**
1292	<	* Sleeps until the timeout has elapsed, or interrupted.
1293	<	* Does <em>NOT</em> throw InterruptedException.
1292	>	* Spin-waits up to the specified number of milliseconds for the given
1293	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1294	>	*/
1295	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1296	>	long startTime = 0L;
1297	>	for (;;) {
1298	>	Thread.State s = thread.getState();
1299	>	if (s == Thread.State.BLOCKED ||
1300	>	s == Thread.State.WAITING ||
1301	>	s == Thread.State.TIMED_WAITING)
1302	>	return;
1303	>	else if (s == Thread.State.TERMINATED)
1304	>	fail("Unexpected thread termination");
1305	>	else if (startTime == 0L)
1306	>	startTime = System.nanoTime();
1307	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1308	>	threadAssertTrue(thread.isAlive());
1309	>	fail("timed out waiting for thread to enter wait state");
1310	>	}
1311	>	Thread.yield();
1312	>	}
1313	>	}
1314	>
1315	>	/**
1316	>	* Spin-waits up to the specified number of milliseconds for the given
1317	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING,
1318	>	* and additionally satisfy the given condition.
1319	>	*/
1320	>	void waitForThreadToEnterWaitState(
1321	>	Thread thread, long timeoutMillis, Callable<Boolean> waitingForGodot) {
1322	>	long startTime = 0L;
1323	>	for (;;) {
1324	>	Thread.State s = thread.getState();
1325	>	if (s == Thread.State.BLOCKED ||
1326	>	s == Thread.State.WAITING ||
1327	>	s == Thread.State.TIMED_WAITING) {
1328	>	try {
1329	>	if (waitingForGodot.call())
1330	>	return;
1331	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1332	>	}
1333	>	else if (s == Thread.State.TERMINATED)
1334	>	fail("Unexpected thread termination");
1335	>	else if (startTime == 0L)
1336	>	startTime = System.nanoTime();
1337	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1338	>	threadAssertTrue(thread.isAlive());
1339	>	fail("timed out waiting for thread to enter wait state");
1340	>	}
1341	>	Thread.yield();
1342	>	}
1343	>	}
1344	>
1345	>	/**
1346	>	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1347	>	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1348	>	*/
1349	>	void waitForThreadToEnterWaitState(Thread thread) {
1350	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
1351	>	}
1352	>
1353	>	/**
1354	>	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1355	>	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING,
1356	>	* and additionally satisfy the given condition.
1357	>	*/
1358	>	void waitForThreadToEnterWaitState(
1359	>	Thread thread, Callable<Boolean> waitingForGodot) {
1360	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS, waitingForGodot);
1361	>	}
1362	>
1363	>	/**
1364	>	* Returns the number of milliseconds since time given by
1365	>	* startNanoTime, which must have been previously returned from a
1366	>	* call to {@link System#nanoTime()}.
1367	>	*/
1368	>	static long millisElapsedSince(long startNanoTime) {
1369	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1370	>	}
1371	>
1372	>	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1373	>	//         long startTime = System.nanoTime();
1374	>	//         try {
1375	>	//             r.run();
1376	>	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1377	>	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1378	>	//             throw new AssertionFailedError("did not return promptly");
1379	>	//     }
1380	>
1381	>	//     void assertTerminatesPromptly(Runnable r) {
1382	>	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1383	>	//     }
1384	>
1385	>	/**
1386	>	* Checks that timed f.get() returns the expected value, and does not
1387	>	* wait for the timeout to elapse before returning.
1388		*/
1389	<	void sleepTillInterrupted(long timeoutMillis) {
1389	>	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1390	>	long startTime = System.nanoTime();
1391		try {
1392	<	Thread.sleep(timeoutMillis);
1393	<	} catch (InterruptedException wakeup) {}
1392	>	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1393	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1394	>	if (millisElapsedSince(startTime) > timeoutMillis/2)
1395	>	throw new AssertionFailedError("timed get did not return promptly");
1396	>	}
1397	>
1398	>	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1399	>	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1400		}
1401
1402		/**
#	Line 619 | Line 1417 | public class JSR166TestCase extends Test
1417		void awaitTermination(Thread t, long timeoutMillis) {
1418		try {
1419		t.join(timeoutMillis);
1420	<	} catch (InterruptedException ie) {
1421	<	threadUnexpectedException(ie);
1420	>	} catch (InterruptedException fail) {
1421	>	threadUnexpectedException(fail);
1422		} finally {
1423	<	if (t.isAlive()) {
1423	>	if (t.getState() != Thread.State.TERMINATED) {
1424		t.interrupt();
1425	<	fail("Test timed out");
1425	>	threadFail("timed out waiting for thread to terminate");
1426		}
1427		}
1428		}
1429
1430	+	/**
1431	+	* Waits for LONG_DELAY_MS milliseconds for the thread to
1432	+	* terminate (using {@link Thread#join(long)}), else interrupts
1433	+	* the thread (in the hope that it may terminate later) and fails.
1434	+	*/
1435	+	void awaitTermination(Thread t) {
1436	+	awaitTermination(t, LONG_DELAY_MS);
1437	+	}
1438	+
1439		// Some convenient Runnable classes
1440
1441		public abstract class CheckedRunnable implements Runnable {
#	Line 637 | Line 1444 | public class JSR166TestCase extends Test
1444		public final void run() {
1445		try {
1446		realRun();
1447	<	} catch (Throwable t) {
1448	<	threadUnexpectedException(t);
1447	>	} catch (Throwable fail) {
1448	>	threadUnexpectedException(fail);
1449		}
1450		}
1451		}
#	Line 691 | Line 1498 | public class JSR166TestCase extends Test
1498		realRun();
1499		threadShouldThrow("InterruptedException");
1500		} catch (InterruptedException success) {
1501	<	} catch (Throwable t) {
1502	<	threadUnexpectedException(t);
1501	>	threadAssertFalse(Thread.interrupted());
1502	>	} catch (Throwable fail) {
1503	>	threadUnexpectedException(fail);
1504		}
1505		}
1506		}
#	Line 703 | Line 1511 | public class JSR166TestCase extends Test
1511		public final T call() {
1512		try {
1513		return realCall();
1514	<	} catch (Throwable t) {
1515	<	threadUnexpectedException(t);
1514	>	} catch (Throwable fail) {
1515	>	threadUnexpectedException(fail);
1516		return null;
1517		}
1518		}
#	Line 720 | Line 1528 | public class JSR166TestCase extends Test
1528		threadShouldThrow("InterruptedException");
1529		return result;
1530		} catch (InterruptedException success) {
1531	<	} catch (Throwable t) {
1532	<	threadUnexpectedException(t);
1531	>	threadAssertFalse(Thread.interrupted());
1532	>	} catch (Throwable fail) {
1533	>	threadUnexpectedException(fail);
1534		}
1535		return null;
1536		}
#	Line 738 | Line 1547 | public class JSR166TestCase extends Test
1547		public static final String TEST_STRING = "a test string";
1548
1549		public static class StringTask implements Callable<String> {
1550	<	public String call() { return TEST_STRING; }
1550	>	final String value;
1551	>	public StringTask() { this(TEST_STRING); }
1552	>	public StringTask(String value) { this.value = value; }
1553	>	public String call() { return value; }
1554		}
1555
1556		public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1557		return new CheckedCallable<String>() {
1558	<	public String realCall() {
1558	>	protected String realCall() {
1559		try {
1560		latch.await();
1561		} catch (InterruptedException quittingTime) {}
#	Line 751 | Line 1563 | public class JSR166TestCase extends Test
1563		}};
1564		}
1565
1566	+	public Runnable countDowner(final CountDownLatch latch) {
1567	+	return new CheckedRunnable() {
1568	+	public void realRun() throws InterruptedException {
1569	+	latch.countDown();
1570	+	}};
1571	+	}
1572	+
1573	+	class LatchAwaiter extends CheckedRunnable {
1574	+	static final int NEW = 0;
1575	+	static final int RUNNING = 1;
1576	+	static final int DONE = 2;
1577	+	final CountDownLatch latch;
1578	+	int state = NEW;
1579	+	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1580	+	public void realRun() throws InterruptedException {
1581	+	state = 1;
1582	+	await(latch);
1583	+	state = 2;
1584	+	}
1585	+	}
1586	+
1587	+	public LatchAwaiter awaiter(CountDownLatch latch) {
1588	+	return new LatchAwaiter(latch);
1589	+	}
1590	+
1591	+	public void await(CountDownLatch latch, long timeoutMillis) {
1592	+	try {
1593	+	if (!latch.await(timeoutMillis, MILLISECONDS))
1594	+	fail("timed out waiting for CountDownLatch for "
1595	+	+ (timeoutMillis/1000) + " sec");
1596	+	} catch (Throwable fail) {
1597	+	threadUnexpectedException(fail);
1598	+	}
1599	+	}
1600	+
1601	+	public void await(CountDownLatch latch) {
1602	+	await(latch, LONG_DELAY_MS);
1603	+	}
1604	+
1605	+	public void await(Semaphore semaphore) {
1606	+	try {
1607	+	if (!semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS))
1608	+	fail("timed out waiting for Semaphore for "
1609	+	+ (LONG_DELAY_MS/1000) + " sec");
1610	+	} catch (Throwable fail) {
1611	+	threadUnexpectedException(fail);
1612	+	}
1613	+	}
1614	+
1615	+	//     /**
1616	+	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1617	+	//      */
1618	+	//     public void await(AtomicBoolean flag) {
1619	+	//         await(flag, LONG_DELAY_MS);
1620	+	//     }
1621	+
1622	+	//     /**
1623	+	//      * Spin-waits up to the specified timeout until flag becomes true.
1624	+	//      */
1625	+	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1626	+	//         long startTime = System.nanoTime();
1627	+	//         while (!flag.get()) {
1628	+	//             if (millisElapsedSince(startTime) > timeoutMillis)
1629	+	//                 throw new AssertionFailedError("timed out");
1630	+	//             Thread.yield();
1631	+	//         }
1632	+	//     }
1633	+
1634		public static class NPETask implements Callable<String> {
1635		public String call() { throw new NullPointerException(); }
1636		}
#	Line 761 | Line 1641 | public class JSR166TestCase extends Test
1641
1642		public class ShortRunnable extends CheckedRunnable {
1643		protected void realRun() throws Throwable {
1644	<	Thread.sleep(SHORT_DELAY_MS);
1644	>	delay(SHORT_DELAY_MS);
1645		}
1646		}
1647
1648		public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1649		protected void realRun() throws InterruptedException {
1650	<	Thread.sleep(SHORT_DELAY_MS);
1650	>	delay(SHORT_DELAY_MS);
1651		}
1652		}
1653
1654		public class SmallRunnable extends CheckedRunnable {
1655		protected void realRun() throws Throwable {
1656	<	Thread.sleep(SMALL_DELAY_MS);
1656	>	delay(SMALL_DELAY_MS);
1657		}
1658		}
1659
1660		public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1661		protected void realRun() {
1662		try {
1663	<	Thread.sleep(SMALL_DELAY_MS);
1663	>	delay(SMALL_DELAY_MS);
1664		} catch (InterruptedException ok) {}
1665		}
1666		}
1667
1668		public class SmallCallable extends CheckedCallable {
1669		protected Object realCall() throws InterruptedException {
1670	<	Thread.sleep(SMALL_DELAY_MS);
1670	>	delay(SMALL_DELAY_MS);
1671		return Boolean.TRUE;
1672		}
1673		}
1674
1675		public class MediumRunnable extends CheckedRunnable {
1676		protected void realRun() throws Throwable {
1677	<	Thread.sleep(MEDIUM_DELAY_MS);
1677	>	delay(MEDIUM_DELAY_MS);
1678		}
1679		}
1680
1681		public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1682		protected void realRun() throws InterruptedException {
1683	<	Thread.sleep(MEDIUM_DELAY_MS);
1683	>	delay(MEDIUM_DELAY_MS);
1684		}
1685		}
1686
1687	+	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1688	+	return new CheckedRunnable() {
1689	+	protected void realRun() {
1690	+	try {
1691	+	delay(timeoutMillis);
1692	+	} catch (InterruptedException ok) {}
1693	+	}};
1694	+	}
1695	+
1696		public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1697		protected void realRun() {
1698		try {
1699	<	Thread.sleep(MEDIUM_DELAY_MS);
1699	>	delay(MEDIUM_DELAY_MS);
1700		} catch (InterruptedException ok) {}
1701		}
1702		}
#	Line 815 | Line 1704 | public class JSR166TestCase extends Test
1704		public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1705		protected void realRun() {
1706		try {
1707	<	Thread.sleep(LONG_DELAY_MS);
1707	>	delay(LONG_DELAY_MS);
1708		} catch (InterruptedException ok) {}
1709		}
1710		}
#	Line 839 | Line 1728 | public class JSR166TestCase extends Test
1728		public boolean isDone() { return done; }
1729		public void run() {
1730		try {
1731	<	Thread.sleep(timeoutMillis);
1731	>	delay(timeoutMillis);
1732		done = true;
1733		} catch (InterruptedException ok) {}
1734		}
#	Line 850 | Line 1739 | public class JSR166TestCase extends Test
1739		public volatile boolean done = false;
1740		public void run() {
1741		try {
1742	<	Thread.sleep(SHORT_DELAY_MS);
1742	>	delay(SHORT_DELAY_MS);
1743		done = true;
1744		} catch (InterruptedException ok) {}
1745		}
#	Line 860 | Line 1749 | public class JSR166TestCase extends Test
1749		public volatile boolean done = false;
1750		public void run() {
1751		try {
1752	<	Thread.sleep(SMALL_DELAY_MS);
1752	>	delay(SMALL_DELAY_MS);
1753		done = true;
1754		} catch (InterruptedException ok) {}
1755		}
#	Line 870 | Line 1759 | public class JSR166TestCase extends Test
1759		public volatile boolean done = false;
1760		public void run() {
1761		try {
1762	<	Thread.sleep(MEDIUM_DELAY_MS);
1762	>	delay(MEDIUM_DELAY_MS);
1763		done = true;
1764		} catch (InterruptedException ok) {}
1765		}
#	Line 880 | Line 1769 | public class JSR166TestCase extends Test
1769		public volatile boolean done = false;
1770		public void run() {
1771		try {
1772	<	Thread.sleep(LONG_DELAY_MS);
1772	>	delay(LONG_DELAY_MS);
1773		done = true;
1774		} catch (InterruptedException ok) {}
1775		}
#	Line 897 | Line 1786 | public class JSR166TestCase extends Test
1786		public volatile boolean done = false;
1787		public Object call() {
1788		try {
1789	<	Thread.sleep(SMALL_DELAY_MS);
1789	>	delay(SMALL_DELAY_MS);
1790		done = true;
1791		} catch (InterruptedException ok) {}
1792		return Boolean.TRUE;
#	Line 910 | Line 1799 | public class JSR166TestCase extends Test
1799		public abstract class CheckedRecursiveAction extends RecursiveAction {
1800		protected abstract void realCompute() throws Throwable;
1801
1802	<	public final void compute() {
1802	>	@Override protected final void compute() {
1803		try {
1804		realCompute();
1805	<	} catch (Throwable t) {
1806	<	threadUnexpectedException(t);
1805	>	} catch (Throwable fail) {
1806	>	threadUnexpectedException(fail);
1807		}
1808		}
1809		}
#	Line 925 | Line 1814 | public class JSR166TestCase extends Test
1814		public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1815		protected abstract T realCompute() throws Throwable;
1816
1817	<	public final T compute() {
1817	>	@Override protected final T compute() {
1818		try {
1819		return realCompute();
1820	<	} catch (Throwable t) {
1821	<	threadUnexpectedException(t);
1820	>	} catch (Throwable fail) {
1821	>	threadUnexpectedException(fail);
1822		return null;
1823		}
1824		}
#	Line 944 | Line 1833 | public class JSR166TestCase extends Test
1833		}
1834
1835		/**
1836	<	* A CyclicBarrier that fails with AssertionFailedErrors instead
1837	<	* of throwing checked exceptions.
1836	>	* A CyclicBarrier that uses timed await and fails with
1837	>	* AssertionFailedErrors instead of throwing checked exceptions.
1838		*/
1839	<	public class CheckedBarrier extends CyclicBarrier {
1839	>	public static class CheckedBarrier extends CyclicBarrier {
1840		public CheckedBarrier(int parties) { super(parties); }
1841
1842		public int await() {
1843		try {
1844	<	return super.await();
1845	<	} catch (Exception e) {
1844	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1845	>	} catch (TimeoutException timedOut) {
1846	>	throw new AssertionFailedError("timed out");
1847	>	} catch (Exception fail) {
1848		AssertionFailedError afe =
1849	<	new AssertionFailedError("Unexpected exception: " + e);
1850	<	afe.initCause(e);
1849	>	new AssertionFailedError("Unexpected exception: " + fail);
1850	>	afe.initCause(fail);
1851		throw afe;
1852		}
1853		}
1854		}
1855
1856	+	void checkEmpty(BlockingQueue q) {
1857	+	try {
1858	+	assertTrue(q.isEmpty());
1859	+	assertEquals(0, q.size());
1860	+	assertNull(q.peek());
1861	+	assertNull(q.poll());
1862	+	assertNull(q.poll(0, MILLISECONDS));
1863	+	assertEquals(q.toString(), "[]");
1864	+	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1865	+	assertFalse(q.iterator().hasNext());
1866	+	try {
1867	+	q.element();
1868	+	shouldThrow();
1869	+	} catch (NoSuchElementException success) {}
1870	+	try {
1871	+	q.iterator().next();
1872	+	shouldThrow();
1873	+	} catch (NoSuchElementException success) {}
1874	+	try {
1875	+	q.remove();
1876	+	shouldThrow();
1877	+	} catch (NoSuchElementException success) {}
1878	+	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1879	+	}
1880	+
1881	+	void assertSerialEquals(Object x, Object y) {
1882	+	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1883	+	}
1884	+
1885	+	void assertNotSerialEquals(Object x, Object y) {
1886	+	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1887	+	}
1888	+
1889	+	byte[] serialBytes(Object o) {
1890	+	try {
1891	+	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1892	+	ObjectOutputStream oos = new ObjectOutputStream(bos);
1893	+	oos.writeObject(o);
1894	+	oos.flush();
1895	+	oos.close();
1896	+	return bos.toByteArray();
1897	+	} catch (Throwable fail) {
1898	+	threadUnexpectedException(fail);
1899	+	return new byte[0];
1900	+	}
1901	+	}
1902	+
1903	+	void assertImmutable(final Object o) {
1904	+	if (o instanceof Collection) {
1905	+	assertThrows(
1906	+	UnsupportedOperationException.class,
1907	+	new Runnable() { public void run() {
1908	+	((Collection) o).add(null);}});
1909	+	}
1910	+	}
1911	+
1912	+	@SuppressWarnings("unchecked")
1913	+	<T> T serialClone(T o) {
1914	+	try {
1915	+	ObjectInputStream ois = new ObjectInputStream
1916	+	(new ByteArrayInputStream(serialBytes(o)));
1917	+	T clone = (T) ois.readObject();
1918	+	if (o == clone) assertImmutable(o);
1919	+	assertSame(o.getClass(), clone.getClass());
1920	+	return clone;
1921	+	} catch (Throwable fail) {
1922	+	threadUnexpectedException(fail);
1923	+	return null;
1924	+	}
1925	+	}
1926	+
1927	+	/**
1928	+	* A version of serialClone that leaves error handling (for
1929	+	* e.g. NotSerializableException) up to the caller.
1930	+	*/
1931	+	@SuppressWarnings("unchecked")
1932	+	<T> T serialClonePossiblyFailing(T o)
1933	+	throws ReflectiveOperationException, java.io.IOException {
1934	+	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1935	+	ObjectOutputStream oos = new ObjectOutputStream(bos);
1936	+	oos.writeObject(o);
1937	+	oos.flush();
1938	+	oos.close();
1939	+	ObjectInputStream ois = new ObjectInputStream
1940	+	(new ByteArrayInputStream(bos.toByteArray()));
1941	+	T clone = (T) ois.readObject();
1942	+	if (o == clone) assertImmutable(o);
1943	+	assertSame(o.getClass(), clone.getClass());
1944	+	return clone;
1945	+	}
1946	+
1947	+	/**
1948	+	* If o implements Cloneable and has a public clone method,
1949	+	* returns a clone of o, else null.
1950	+	*/
1951	+	@SuppressWarnings("unchecked")
1952	+	<T> T cloneableClone(T o) {
1953	+	if (!(o instanceof Cloneable)) return null;
1954	+	final T clone;
1955	+	try {
1956	+	clone = (T) o.getClass().getMethod("clone").invoke(o);
1957	+	} catch (NoSuchMethodException ok) {
1958	+	return null;
1959	+	} catch (ReflectiveOperationException unexpected) {
1960	+	throw new Error(unexpected);
1961	+	}
1962	+	assertNotSame(o, clone); // not 100% guaranteed by spec
1963	+	assertSame(o.getClass(), clone.getClass());
1964	+	return clone;
1965	+	}
1966	+
1967	+	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1968	+	Runnable... throwingActions) {
1969	+	for (Runnable throwingAction : throwingActions) {
1970	+	boolean threw = false;
1971	+	try { throwingAction.run(); }
1972	+	catch (Throwable t) {
1973	+	threw = true;
1974	+	if (!expectedExceptionClass.isInstance(t)) {
1975	+	AssertionFailedError afe =
1976	+	new AssertionFailedError
1977	+	("Expected " + expectedExceptionClass.getName() +
1978	+	", got " + t.getClass().getName());
1979	+	afe.initCause(t);
1980	+	threadUnexpectedException(afe);
1981	+	}
1982	+	}
1983	+	if (!threw)
1984	+	shouldThrow(expectedExceptionClass.getName());
1985	+	}
1986	+	}
1987	+
1988	+	public void assertIteratorExhausted(Iterator<?> it) {
1989	+	try {
1990	+	it.next();
1991	+	shouldThrow();
1992	+	} catch (NoSuchElementException success) {}
1993	+	assertFalse(it.hasNext());
1994	+	}
1995	+
1996	+	public <T> Callable<T> callableThrowing(final Exception ex) {
1997	+	return new Callable<T>() { public T call() throws Exception { throw ex; }};
1998	+	}
1999	+
2000	+	public Runnable runnableThrowing(final RuntimeException ex) {
2001	+	return new Runnable() { public void run() { throw ex; }};
2002	+	}
2003	+
2004	+	/** A reusable thread pool to be shared by tests. */
2005	+	static final ExecutorService cachedThreadPool =
2006	+	new ThreadPoolExecutor(0, Integer.MAX_VALUE,
2007	+	1000L, MILLISECONDS,
2008	+	new SynchronousQueue<Runnable>());
2009	+
2010	+	static <T> void shuffle(T[] array) {
2011	+	Collections.shuffle(Arrays.asList(array), ThreadLocalRandom.current());
2012	+	}
2013		}

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