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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.64 by jsr166, Fri Oct 15 22:30:07 2010 UTC vs.
Revision 1.148 by jsr166, Mon Sep 28 08:23:49 2015 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
4	>	* http://creativecommons.org/publicdomain/zero/1.0/
5		* Other contributors include Andrew Wright, Jeffrey Hayes,
6		* Pat Fisher, Mike Judd.
7		*/
8
9	–	import junit.framework.*;
10	–	import java.util.PropertyPermission;
11	–	import java.util.concurrent.*;
12	–	import java.util.concurrent.atomic.AtomicReference;
9		import static java.util.concurrent.TimeUnit.MILLISECONDS;
10	+	import static java.util.concurrent.TimeUnit.NANOSECONDS;
11	+
12	+	import java.io.ByteArrayInputStream;
13	+	import java.io.ByteArrayOutputStream;
14	+	import java.io.ObjectInputStream;
15	+	import java.io.ObjectOutputStream;
16	+	import java.lang.management.ManagementFactory;
17	+	import java.lang.management.ThreadInfo;
18	+	import java.lang.reflect.Constructor;
19	+	import java.lang.reflect.Method;
20	+	import java.lang.reflect.Modifier;
21		import java.security.CodeSource;
22		import java.security.Permission;
23		import java.security.PermissionCollection;
#	Line 18 | Line 25 | import java.security.Permissions;
25		import java.security.Policy;
26		import java.security.ProtectionDomain;
27		import java.security.SecurityPermission;
28	+	import java.util.ArrayList;
29	+	import java.util.Arrays;
30	+	import java.util.Date;
31	+	import java.util.Enumeration;
32	+	import java.util.Iterator;
33	+	import java.util.List;
34	+	import java.util.NoSuchElementException;
35	+	import java.util.PropertyPermission;
36	+	import java.util.concurrent.BlockingQueue;
37	+	import java.util.concurrent.Callable;
38	+	import java.util.concurrent.CountDownLatch;
39	+	import java.util.concurrent.CyclicBarrier;
40	+	import java.util.concurrent.ExecutionException;
41	+	import java.util.concurrent.Executors;
42	+	import java.util.concurrent.ExecutorService;
43	+	import java.util.concurrent.ForkJoinPool;
44	+	import java.util.concurrent.Future;
45	+	import java.util.concurrent.RecursiveAction;
46	+	import java.util.concurrent.RecursiveTask;
47	+	import java.util.concurrent.RejectedExecutionHandler;
48	+	import java.util.concurrent.Semaphore;
49	+	import java.util.concurrent.ThreadFactory;
50	+	import java.util.concurrent.ThreadPoolExecutor;
51	+	import java.util.concurrent.TimeoutException;
52	+	import java.util.concurrent.atomic.AtomicReference;
53	+	import java.util.regex.Pattern;
54	+
55	+	import junit.framework.AssertionFailedError;
56	+	import junit.framework.Test;
57	+	import junit.framework.TestCase;
58	+	import junit.framework.TestResult;
59	+	import junit.framework.TestSuite;
60
61		/**
62		* Base class for JSR166 Junit TCK tests.  Defines some constants,
#	Line 29 | Line 68 | import java.security.SecurityPermission;
68		*
69		* <ol>
70		*
71	<	* <li> All assertions in code running in generated threads must use
71	>	* <li>All assertions in code running in generated threads must use
72		* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
73		* #threadAssertEquals}, or {@link #threadAssertNull}, (not
74		* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
75		* particularly recommended) for other code to use these forms too.
76		* Only the most typically used JUnit assertion methods are defined
77	<	* this way, but enough to live with.</li>
77	>	* this way, but enough to live with.
78		*
79	<	* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
79	>	* <li>If you override {@link #setUp} or {@link #tearDown}, make sure
80		* to invoke {@code super.setUp} and {@code super.tearDown} within
81		* them. These methods are used to clear and check for thread
82	<	* assertion failures.</li>
82	>	* assertion failures.
83		*
84		* <li>All delays and timeouts must use one of the constants {@code
85		* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
#	Line 51 | Line 90 | import java.security.SecurityPermission;
90		* is always discriminable as larger than SHORT and smaller than
91		* MEDIUM.  And so on. These constants are set to conservative values,
92		* but even so, if there is ever any doubt, they can all be increased
93	<	* in one spot to rerun tests on slower platforms.</li>
93	>	* in one spot to rerun tests on slower platforms.
94		*
95	<	* <li> All threads generated must be joined inside each test case
95	>	* <li>All threads generated must be joined inside each test case
96		* method (or {@code fail} to do so) before returning from the
97		* method. The {@code joinPool} method can be used to do this when
98	<	* using Executors.</li>
98	>	* using Executors.
99		*
100		* </ol>
101		*
102	<	* <p> <b>Other notes</b>
102	>	* <p><b>Other notes</b>
103		* <ul>
104		*
105	<	* <li> Usually, there is one testcase method per JSR166 method
105	>	* <li>Usually, there is one testcase method per JSR166 method
106		* covering "normal" operation, and then as many exception-testing
107		* methods as there are exceptions the method can throw. Sometimes
108		* there are multiple tests per JSR166 method when the different
109		* "normal" behaviors differ significantly. And sometimes testcases
110		* cover multiple methods when they cannot be tested in
111	<	* isolation.</li>
111	>	* isolation.
112		*
113	<	* <li> The documentation style for testcases is to provide as javadoc
113	>	* <li>The documentation style for testcases is to provide as javadoc
114		* a simple sentence or two describing the property that the testcase
115		* method purports to test. The javadocs do not say anything about how
116	<	* the property is tested. To find out, read the code.</li>
116	>	* the property is tested. To find out, read the code.
117		*
118	<	* <li> These tests are "conformance tests", and do not attempt to
118	>	* <li>These tests are "conformance tests", and do not attempt to
119		* test throughput, latency, scalability or other performance factors
120		* (see the separate "jtreg" tests for a set intended to check these
121		* for the most central aspects of functionality.) So, most tests use
122		* the smallest sensible numbers of threads, collection sizes, etc
123	<	* needed to check basic conformance.</li>
123	>	* needed to check basic conformance.
124		*
125		* <li>The test classes currently do not declare inclusion in
126		* any particular package to simplify things for people integrating
127	<	* them in TCK test suites.</li>
127	>	* them in TCK test suites.
128		*
129	<	* <li> As a convenience, the {@code main} of this class (JSR166TestCase)
130	<	* runs all JSR166 unit tests.</li>
129	>	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
130	>	* runs all JSR166 unit tests.
131		*
132		* </ul>
133		*/
#	Line 100 | Line 139 | public class JSR166TestCase extends Test
139		Boolean.getBoolean("jsr166.expensiveTests");
140
141		/**
142	+	* If true, also run tests that are not part of the official tck
143	+	* because they test unspecified implementation details.
144	+	*/
145	+	protected static final boolean testImplementationDetails =
146	+	Boolean.getBoolean("jsr166.testImplementationDetails");
147	+
148	+	/**
149		* If true, report on stdout all "slow" tests, that is, ones that
150		* take more than profileThreshold milliseconds to execute.
151		*/
#	Line 113 | Line 159 | public class JSR166TestCase extends Test
159		private static final long profileThreshold =
160		Long.getLong("jsr166.profileThreshold", 100);
161
162	+	/**
163	+	* The number of repetitions per test (for tickling rare bugs).
164	+	*/
165	+	private static final int runsPerTest =
166	+	Integer.getInteger("jsr166.runsPerTest", 1);
167	+
168	+	/**
169	+	* The number of repetitions of the test suite (for finding leaks?).
170	+	*/
171	+	private static final int suiteRuns =
172	+	Integer.getInteger("jsr166.suiteRuns", 1);
173	+
174	+	public JSR166TestCase() { super(); }
175	+	public JSR166TestCase(String name) { super(name); }
176	+
177	+	/**
178	+	* A filter for tests to run, matching strings of the form
179	+	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
180	+	* Usefully combined with jsr166.runsPerTest.
181	+	*/
182	+	private static final Pattern methodFilter = methodFilter();
183	+
184	+	private static Pattern methodFilter() {
185	+	String regex = System.getProperty("jsr166.methodFilter");
186	+	return (regex == null) ? null : Pattern.compile(regex);
187	+	}
188	+
189	+	public void runBare() throws Throwable {
190	+	if (methodFilter == null
191	+	|| methodFilter.matcher(toString()).find())
192	+	super.runBare();
193	+	}
194	+
195		protected void runTest() throws Throwable {
196	<	if (profileTests)
197	<	runTestProfiled();
198	<	else
199	<	super.runTest();
196	>	for (int i = 0; i < runsPerTest; i++) {
197	>	if (profileTests)
198	>	runTestProfiled();
199	>	else
200	>	super.runTest();
201	>	}
202		}
203
204		protected void runTestProfiled() throws Throwable {
205	<	long t0 = System.nanoTime();
206	<	try {
205	>	for (int i = 0; i < 2; i++) {
206	>	long startTime = System.nanoTime();
207		super.runTest();
208	<	} finally {
209	<	long elapsedMillis =
210	<	(System.nanoTime() - t0) / (1000L * 1000L);
211	<	if (elapsedMillis >= profileThreshold)
208	>	long elapsedMillis = millisElapsedSince(startTime);
209	>	if (elapsedMillis < profileThreshold)
210	>	break;
211	>	// Never report first run of any test; treat it as a
212	>	// warmup run, notably to trigger all needed classloading,
213	>	if (i > 0)
214		System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
215		}
216		}
217
218		/**
219	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
219	>	* Runs all JSR166 unit tests using junit.textui.TestRunner.
220		*/
221		public static void main(String[] args) {
222	+	main(suite(), args);
223	+	}
224	+
225	+	/**
226	+	* Runs all unit tests in the given test suite.
227	+	* Actual behavior influenced by jsr166.* system properties.
228	+	*/
229	+	static void main(Test suite, String[] args) {
230		if (useSecurityManager) {
231		System.err.println("Setting a permissive security manager");
232		Policy.setPolicy(permissivePolicy());
233		System.setSecurityManager(new SecurityManager());
234		}
235	<	int iters = (args.length == 0) ? 1 : Integer.parseInt(args[0]);
236	<
237	<	Test s = suite();
238	<	for (int i = 0; i < iters; ++i) {
148	<	junit.textui.TestRunner.run(s);
235	>	for (int i = 0; i < suiteRuns; i++) {
236	>	TestResult result = junit.textui.TestRunner.run(suite);
237	>	if (!result.wasSuccessful())
238	>	System.exit(1);
239		System.gc();
240		System.runFinalization();
241		}
152	–	System.exit(0);
242		}
243
244		public static TestSuite newTestSuite(Object... suiteOrClasses) {
#	Line 165 | Line 254 | public class JSR166TestCase extends Test
254		return suite;
255		}
256
257	+	public static void addNamedTestClasses(TestSuite suite,
258	+	String... testClassNames) {
259	+	for (String testClassName : testClassNames) {
260	+	try {
261	+	Class<?> testClass = Class.forName(testClassName);
262	+	Method m = testClass.getDeclaredMethod("suite",
263	+	new Class<?>[0]);
264	+	suite.addTest(newTestSuite((Test)m.invoke(null)));
265	+	} catch (Exception e) {
266	+	throw new Error("Missing test class", e);
267	+	}
268	+	}
269	+	}
270	+
271	+	public static final double JAVA_CLASS_VERSION;
272	+	public static final String JAVA_SPECIFICATION_VERSION;
273	+	static {
274	+	try {
275	+	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
276	+	new java.security.PrivilegedAction<Double>() {
277	+	public Double run() {
278	+	return Double.valueOf(System.getProperty("java.class.version"));}});
279	+	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
280	+	new java.security.PrivilegedAction<String>() {
281	+	public String run() {
282	+	return System.getProperty("java.specification.version");}});
283	+	} catch (Throwable t) {
284	+	throw new Error(t);
285	+	}
286	+	}
287	+
288	+	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
289	+	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
290	+	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
291	+	public static boolean atLeastJava9() {
292	+	return JAVA_CLASS_VERSION >= 53.0
293	+	// As of 2015-09, java9 still uses 52.0 class file version
294	+	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?(9|[0-9][0-9])$");
295	+	}
296	+	public static boolean atLeastJava10() {
297	+	return JAVA_CLASS_VERSION >= 54.0
298	+	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?[0-9][0-9]$");
299	+	}
300	+
301		/**
302		* Collects all JSR166 unit tests as one suite.
303		*/
304		public static Test suite() {
305	<	return newTestSuite(
305	>	// Java7+ test classes
306	>	TestSuite suite = newTestSuite(
307		ForkJoinPoolTest.suite(),
308		ForkJoinTaskTest.suite(),
309		RecursiveActionTest.suite(),
#	Line 234 | Line 368 | public class JSR166TestCase extends Test
368		TreeSetTest.suite(),
369		TreeSubMapTest.suite(),
370		TreeSubSetTest.suite());
371	+
372	+	// Java8+ test classes
373	+	if (atLeastJava8()) {
374	+	String[] java8TestClassNames = {
375	+	"Atomic8Test",
376	+	"CompletableFutureTest",
377	+	"ConcurrentHashMap8Test",
378	+	"CountedCompleterTest",
379	+	"DoubleAccumulatorTest",
380	+	"DoubleAdderTest",
381	+	"ForkJoinPool8Test",
382	+	"ForkJoinTask8Test",
383	+	"LongAccumulatorTest",
384	+	"LongAdderTest",
385	+	"SplittableRandomTest",
386	+	"StampedLockTest",
387	+	"SubmissionPublisherTest",
388	+	"ThreadLocalRandom8Test",
389	+	};
390	+	addNamedTestClasses(suite, java8TestClassNames);
391	+	}
392	+
393	+	// Java9+ test classes
394	+	if (atLeastJava9()) {
395	+	String[] java9TestClassNames = {
396	+	// Currently empty, but expecting varhandle tests
397	+	};
398	+	addNamedTestClasses(suite, java9TestClassNames);
399	+	}
400	+
401	+	return suite;
402	+	}
403	+
404	+	/** Returns list of junit-style test method names in given class. */
405	+	public static ArrayList<String> testMethodNames(Class<?> testClass) {
406	+	Method[] methods = testClass.getDeclaredMethods();
407	+	ArrayList<String> names = new ArrayList<String>(methods.length);
408	+	for (Method method : methods) {
409	+	if (method.getName().startsWith("test")
410	+	&& Modifier.isPublic(method.getModifiers())
411	+	// method.getParameterCount() requires jdk8+
412	+	&& method.getParameterTypes().length == 0) {
413	+	names.add(method.getName());
414	+	}
415	+	}
416	+	return names;
417		}
418
419	+	/**
420	+	* Returns junit-style testSuite for the given test class, but
421	+	* parameterized by passing extra data to each test.
422	+	*/
423	+	public static <ExtraData> Test parameterizedTestSuite
424	+	(Class<? extends JSR166TestCase> testClass,
425	+	Class<ExtraData> dataClass,
426	+	ExtraData data) {
427	+	try {
428	+	TestSuite suite = new TestSuite();
429	+	Constructor c =
430	+	testClass.getDeclaredConstructor(dataClass, String.class);
431	+	for (String methodName : testMethodNames(testClass))
432	+	suite.addTest((Test) c.newInstance(data, methodName));
433	+	return suite;
434	+	} catch (Exception e) {
435	+	throw new Error(e);
436	+	}
437	+	}
438	+
439	+	/**
440	+	* Returns junit-style testSuite for the jdk8 extension of the
441	+	* given test class, but parameterized by passing extra data to
442	+	* each test.  Uses reflection to allow compilation in jdk7.
443	+	*/
444	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
445	+	(Class<? extends JSR166TestCase> testClass,
446	+	Class<ExtraData> dataClass,
447	+	ExtraData data) {
448	+	if (atLeastJava8()) {
449	+	String name = testClass.getName();
450	+	String name8 = name.replaceAll("Test$", "8Test");
451	+	if (name.equals(name8)) throw new Error(name);
452	+	try {
453	+	return (Test)
454	+	Class.forName(name8)
455	+	.getMethod("testSuite", new Class[] { dataClass })
456	+	.invoke(null, data);
457	+	} catch (Exception e) {
458	+	throw new Error(e);
459	+	}
460	+	} else {
461	+	return new TestSuite();
462	+	}
463	+
464	+	}
465	+
466	+	// Delays for timing-dependent tests, in milliseconds.
467
468		public static long SHORT_DELAY_MS;
469		public static long SMALL_DELAY_MS;
470		public static long MEDIUM_DELAY_MS;
471		public static long LONG_DELAY_MS;
472
245	–
473		/**
474		* Returns the shortest timed delay. This could
475		* be reimplemented to use for example a Property.
#	Line 251 | Line 478 | public class JSR166TestCase extends Test
478		return 50;
479		}
480
254	–
481		/**
482		* Sets delays as multiples of SHORT_DELAY.
483		*/
#	Line 259 | Line 485 | public class JSR166TestCase extends Test
485		SHORT_DELAY_MS = getShortDelay();
486		SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
487		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
488	<	LONG_DELAY_MS   = SHORT_DELAY_MS * 50;
488	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
489	>	}
490	>
491	>	/**
492	>	* Returns a timeout in milliseconds to be used in tests that
493	>	* verify that operations block or time out.
494	>	*/
495	>	long timeoutMillis() {
496	>	return SHORT_DELAY_MS / 4;
497	>	}
498	>
499	>	/**
500	>	* Returns a new Date instance representing a time at least
501	>	* delayMillis milliseconds in the future.
502	>	*/
503	>	Date delayedDate(long delayMillis) {
504	>	// Add 1 because currentTimeMillis is known to round into the past.
505	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
506		}
507
508		/**
#	Line 282 | Line 525 | public class JSR166TestCase extends Test
525		setDelays();
526		}
527
528	+	void tearDownFail(String format, Object... args) {
529	+	String msg = toString() + ": " + String.format(format, args);
530	+	System.err.println(msg);
531	+	printAllStackTraces();
532	+	throw new AssertionFailedError(msg);
533	+	}
534	+
535		/**
536	+	* Extra checks that get done for all test cases.
537	+	*
538		* Triggers test case failure if any thread assertions have failed,
539		* by rethrowing, in the test harness thread, any exception recorded
540		* earlier by threadRecordFailure.
541	+	*
542	+	* Triggers test case failure if interrupt status is set in the main thread.
543		*/
544		public void tearDown() throws Exception {
545	<	Throwable t = threadFailure.get();
545	>	Throwable t = threadFailure.getAndSet(null);
546		if (t != null) {
547		if (t instanceof Error)
548		throw (Error) t;
#	Line 303 | Line 557 | public class JSR166TestCase extends Test
557		throw afe;
558		}
559		}
560	+
561	+	if (Thread.interrupted())
562	+	tearDownFail("interrupt status set in main thread");
563	+
564	+	checkForkJoinPoolThreadLeaks();
565	+	}
566	+
567	+	/**
568	+	* Finds missing try { ... } finally { joinPool(e); }
569	+	*/
570	+	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
571	+	Thread[] survivors = new Thread[7];
572	+	int count = Thread.enumerate(survivors);
573	+	for (int i = 0; i < count; i++) {
574	+	Thread thread = survivors[i];
575	+	String name = thread.getName();
576	+	if (name.startsWith("ForkJoinPool-")) {
577	+	// give thread some time to terminate
578	+	thread.join(LONG_DELAY_MS);
579	+	if (thread.isAlive())
580	+	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
581	+	thread);
582	+	}
583	+	}
584	+
585	+	if (!ForkJoinPool.commonPool()
586	+	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
587	+	tearDownFail("ForkJoin common pool thread stuck");
588		}
589
590		/**
#	Line 383 | Line 665 | public class JSR166TestCase extends Test
665		public void threadAssertEquals(Object x, Object y) {
666		try {
667		assertEquals(x, y);
668	<	} catch (AssertionFailedError t) {
669	<	threadRecordFailure(t);
670	<	throw t;
671	<	} catch (Throwable t) {
672	<	threadUnexpectedException(t);
668	>	} catch (AssertionFailedError fail) {
669	>	threadRecordFailure(fail);
670	>	throw fail;
671	>	} catch (Throwable fail) {
672	>	threadUnexpectedException(fail);
673		}
674		}
675
#	Line 399 | Line 681 | public class JSR166TestCase extends Test
681		public void threadAssertSame(Object x, Object y) {
682		try {
683		assertSame(x, y);
684	<	} catch (AssertionFailedError t) {
685	<	threadRecordFailure(t);
686	<	throw t;
684	>	} catch (AssertionFailedError fail) {
685	>	threadRecordFailure(fail);
686	>	throw fail;
687		}
688		}
689
#	Line 434 | Line 716 | public class JSR166TestCase extends Test
716		else {
717		AssertionFailedError afe =
718		new AssertionFailedError("unexpected exception: " + t);
719	<	t.initCause(t);
719	>	afe.initCause(t);
720		throw afe;
721		}
722		}
723
724		/**
725	+	* Delays, via Thread.sleep, for the given millisecond delay, but
726	+	* if the sleep is shorter than specified, may re-sleep or yield
727	+	* until time elapses.
728	+	*/
729	+	static void delay(long millis) throws InterruptedException {
730	+	long startTime = System.nanoTime();
731	+	long ns = millis * 1000 * 1000;
732	+	for (;;) {
733	+	if (millis > 0L)
734	+	Thread.sleep(millis);
735	+	else // too short to sleep
736	+	Thread.yield();
737	+	long d = ns - (System.nanoTime() - startTime);
738	+	if (d > 0L)
739	+	millis = d / (1000 * 1000);
740	+	else
741	+	break;
742	+	}
743	+	}
744	+
745	+	/**
746		* Waits out termination of a thread pool or fails doing so.
747		*/
748	<	public void joinPool(ExecutorService exec) {
748	>	void joinPool(ExecutorService pool) {
749		try {
750	<	exec.shutdown();
751	<	assertTrue("ExecutorService did not terminate in a timely manner",
752	<	exec.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
750	>	pool.shutdown();
751	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS))
752	>	fail("ExecutorService " + pool +
753	>	" did not terminate in a timely manner");
754		} catch (SecurityException ok) {
755		// Allowed in case test doesn't have privs
756	<	} catch (InterruptedException ie) {
756	>	} catch (InterruptedException fail) {
757	>	fail("Unexpected InterruptedException");
758	>	}
759	>	}
760	>
761	>	/** Like Runnable, but with the freedom to throw anything */
762	>	interface Action { public void run() throws Throwable; }
763	>
764	>	/**
765	>	* Runs all the given actions in parallel, failing if any fail.
766	>	* Useful for running multiple variants of tests that are
767	>	* necessarily individually slow because they must block.
768	>	*/
769	>	void testInParallel(Action ... actions) {
770	>	ExecutorService pool = Executors.newCachedThreadPool();
771	>	try {
772	>	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
773	>	for (final Action action : actions)
774	>	futures.add(pool.submit(new CheckedRunnable() {
775	>	public void realRun() throws Throwable { action.run();}}));
776	>	for (Future<?> future : futures)
777	>	try {
778	>	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
779	>	} catch (ExecutionException ex) {
780	>	threadUnexpectedException(ex.getCause());
781	>	} catch (Exception ex) {
782	>	threadUnexpectedException(ex);
783	>	}
784	>	} finally {
785	>	joinPool(pool);
786	>	}
787	>	}
788	>
789	>	/**
790	>	* A debugging tool to print all stack traces, as jstack does.
791	>	*/
792	>	static void printAllStackTraces() {
793	>	for (ThreadInfo info :
794	>	ManagementFactory.getThreadMXBean()
795	>	.dumpAllThreads(true, true))
796	>	System.err.print(info);
797	>	}
798	>
799	>	/**
800	>	* Checks that thread does not terminate within the default
801	>	* millisecond delay of {@code timeoutMillis()}.
802	>	*/
803	>	void assertThreadStaysAlive(Thread thread) {
804	>	assertThreadStaysAlive(thread, timeoutMillis());
805	>	}
806	>
807	>	/**
808	>	* Checks that thread does not terminate within the given millisecond delay.
809	>	*/
810	>	void assertThreadStaysAlive(Thread thread, long millis) {
811	>	try {
812	>	// No need to optimize the failing case via Thread.join.
813	>	delay(millis);
814	>	assertTrue(thread.isAlive());
815	>	} catch (InterruptedException fail) {
816	>	fail("Unexpected InterruptedException");
817	>	}
818	>	}
819	>
820	>	/**
821	>	* Checks that the threads do not terminate within the default
822	>	* millisecond delay of {@code timeoutMillis()}.
823	>	*/
824	>	void assertThreadsStayAlive(Thread... threads) {
825	>	assertThreadsStayAlive(timeoutMillis(), threads);
826	>	}
827	>
828	>	/**
829	>	* Checks that the threads do not terminate within the given millisecond delay.
830	>	*/
831	>	void assertThreadsStayAlive(long millis, Thread... threads) {
832	>	try {
833	>	// No need to optimize the failing case via Thread.join.
834	>	delay(millis);
835	>	for (Thread thread : threads)
836	>	assertTrue(thread.isAlive());
837	>	} catch (InterruptedException fail) {
838		fail("Unexpected InterruptedException");
839		}
840		}
841
842	+	/**
843	+	* Checks that future.get times out, with the default timeout of
844	+	* {@code timeoutMillis()}.
845	+	*/
846	+	void assertFutureTimesOut(Future future) {
847	+	assertFutureTimesOut(future, timeoutMillis());
848	+	}
849	+
850	+	/**
851	+	* Checks that future.get times out, with the given millisecond timeout.
852	+	*/
853	+	void assertFutureTimesOut(Future future, long timeoutMillis) {
854	+	long startTime = System.nanoTime();
855	+	try {
856	+	future.get(timeoutMillis, MILLISECONDS);
857	+	shouldThrow();
858	+	} catch (TimeoutException success) {
859	+	} catch (Exception fail) {
860	+	threadUnexpectedException(fail);
861	+	} finally { future.cancel(true); }
862	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
863	+	}
864
865		/**
866		* Fails with message "should throw exception".
#	Line 494 | Line 901 | public class JSR166TestCase extends Test
901		public static final Integer m6  = new Integer(-6);
902		public static final Integer m10 = new Integer(-10);
903
497	–
904		/**
905		* Runs Runnable r with a security policy that permits precisely
906		* the specified permissions.  If there is no current security
#	Line 506 | Line 912 | public class JSR166TestCase extends Test
912		SecurityManager sm = System.getSecurityManager();
913		if (sm == null) {
914		r.run();
915	+	}
916	+	runWithSecurityManagerWithPermissions(r, permissions);
917	+	}
918	+
919	+	/**
920	+	* Runs Runnable r with a security policy that permits precisely
921	+	* the specified permissions.  If there is no current security
922	+	* manager, a temporary one is set for the duration of the
923	+	* Runnable.  We require that any security manager permit
924	+	* getPolicy/setPolicy.
925	+	*/
926	+	public void runWithSecurityManagerWithPermissions(Runnable r,
927	+	Permission... permissions) {
928	+	SecurityManager sm = System.getSecurityManager();
929	+	if (sm == null) {
930		Policy savedPolicy = Policy.getPolicy();
931		try {
932		Policy.setPolicy(permissivePolicy());
933		System.setSecurityManager(new SecurityManager());
934	<	runWithPermissions(r, permissions);
934	>	runWithSecurityManagerWithPermissions(r, permissions);
935		} finally {
936		System.setSecurityManager(null);
937		Policy.setPolicy(savedPolicy);
#	Line 558 | Line 979 | public class JSR166TestCase extends Test
979		return perms.implies(p);
980		}
981		public void refresh() {}
982	+	public String toString() {
983	+	List<Permission> ps = new ArrayList<Permission>();
984	+	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
985	+	ps.add(e.nextElement());
986	+	return "AdjustablePolicy with permissions " + ps;
987	+	}
988		}
989
990		/**
#	Line 585 | Line 1012 | public class JSR166TestCase extends Test
1012		*/
1013		void sleep(long millis) {
1014		try {
1015	<	Thread.sleep(millis);
1016	<	} catch (InterruptedException ie) {
1015	>	delay(millis);
1016	>	} catch (InterruptedException fail) {
1017		AssertionFailedError afe =
1018		new AssertionFailedError("Unexpected InterruptedException");
1019	<	afe.initCause(ie);
1019	>	afe.initCause(fail);
1020		throw afe;
1021		}
1022		}
1023
1024		/**
1025	<	* Sleeps until the timeout has elapsed, or interrupted.
1026	<	* Does <em>NOT</em> throw InterruptedException.
1025	>	* Spin-waits up to the specified number of milliseconds for the given
1026	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1027	>	*/
1028	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1029	>	long startTime = System.nanoTime();
1030	>	for (;;) {
1031	>	Thread.State s = thread.getState();
1032	>	if (s == Thread.State.BLOCKED ||
1033	>	s == Thread.State.WAITING ||
1034	>	s == Thread.State.TIMED_WAITING)
1035	>	return;
1036	>	else if (s == Thread.State.TERMINATED)
1037	>	fail("Unexpected thread termination");
1038	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1039	>	threadAssertTrue(thread.isAlive());
1040	>	return;
1041	>	}
1042	>	Thread.yield();
1043	>	}
1044	>	}
1045	>
1046	>	/**
1047	>	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
1048	>	* state: BLOCKED, WAITING, or TIMED_WAITING.
1049	>	*/
1050	>	void waitForThreadToEnterWaitState(Thread thread) {
1051	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
1052	>	}
1053	>
1054	>	/**
1055	>	* Returns the number of milliseconds since time given by
1056	>	* startNanoTime, which must have been previously returned from a
1057	>	* call to {@link System#nanoTime()}.
1058	>	*/
1059	>	static long millisElapsedSince(long startNanoTime) {
1060	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1061	>	}
1062	>
1063	>	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1064	>	//         long startTime = System.nanoTime();
1065	>	//         try {
1066	>	//             r.run();
1067	>	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1068	>	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1069	>	//             throw new AssertionFailedError("did not return promptly");
1070	>	//     }
1071	>
1072	>	//     void assertTerminatesPromptly(Runnable r) {
1073	>	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1074	>	//     }
1075	>
1076	>	/**
1077	>	* Checks that timed f.get() returns the expected value, and does not
1078	>	* wait for the timeout to elapse before returning.
1079		*/
1080	<	void sleepTillInterrupted(long timeoutMillis) {
1080	>	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1081	>	long startTime = System.nanoTime();
1082		try {
1083	<	Thread.sleep(timeoutMillis);
1084	<	} catch (InterruptedException wakeup) {}
1083	>	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1084	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1085	>	if (millisElapsedSince(startTime) > timeoutMillis/2)
1086	>	throw new AssertionFailedError("timed get did not return promptly");
1087	>	}
1088	>
1089	>	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1090	>	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1091		}
1092
1093		/**
#	Line 622 | Line 1108 | public class JSR166TestCase extends Test
1108		void awaitTermination(Thread t, long timeoutMillis) {
1109		try {
1110		t.join(timeoutMillis);
1111	<	} catch (InterruptedException ie) {
1112	<	threadUnexpectedException(ie);
1111	>	} catch (InterruptedException fail) {
1112	>	threadUnexpectedException(fail);
1113		} finally {
1114	<	if (t.isAlive()) {
1114	>	if (t.getState() != Thread.State.TERMINATED) {
1115		t.interrupt();
1116		fail("Test timed out");
1117		}
1118		}
1119		}
1120
1121	+	/**
1122	+	* Waits for LONG_DELAY_MS milliseconds for the thread to
1123	+	* terminate (using {@link Thread#join(long)}), else interrupts
1124	+	* the thread (in the hope that it may terminate later) and fails.
1125	+	*/
1126	+	void awaitTermination(Thread t) {
1127	+	awaitTermination(t, LONG_DELAY_MS);
1128	+	}
1129	+
1130		// Some convenient Runnable classes
1131
1132		public abstract class CheckedRunnable implements Runnable {
#	Line 640 | Line 1135 | public class JSR166TestCase extends Test
1135		public final void run() {
1136		try {
1137		realRun();
1138	<	} catch (Throwable t) {
1139	<	threadUnexpectedException(t);
1138	>	} catch (Throwable fail) {
1139	>	threadUnexpectedException(fail);
1140		}
1141		}
1142		}
#	Line 694 | Line 1189 | public class JSR166TestCase extends Test
1189		realRun();
1190		threadShouldThrow("InterruptedException");
1191		} catch (InterruptedException success) {
1192	<	} catch (Throwable t) {
1193	<	threadUnexpectedException(t);
1192	>	threadAssertFalse(Thread.interrupted());
1193	>	} catch (Throwable fail) {
1194	>	threadUnexpectedException(fail);
1195		}
1196		}
1197		}
#	Line 706 | Line 1202 | public class JSR166TestCase extends Test
1202		public final T call() {
1203		try {
1204		return realCall();
1205	<	} catch (Throwable t) {
1206	<	threadUnexpectedException(t);
1205	>	} catch (Throwable fail) {
1206	>	threadUnexpectedException(fail);
1207		return null;
1208		}
1209		}
#	Line 723 | Line 1219 | public class JSR166TestCase extends Test
1219		threadShouldThrow("InterruptedException");
1220		return result;
1221		} catch (InterruptedException success) {
1222	<	} catch (Throwable t) {
1223	<	threadUnexpectedException(t);
1222	>	threadAssertFalse(Thread.interrupted());
1223	>	} catch (Throwable fail) {
1224	>	threadUnexpectedException(fail);
1225		}
1226		return null;
1227		}
#	Line 741 | Line 1238 | public class JSR166TestCase extends Test
1238		public static final String TEST_STRING = "a test string";
1239
1240		public static class StringTask implements Callable<String> {
1241	<	public String call() { return TEST_STRING; }
1241	>	final String value;
1242	>	public StringTask() { this(TEST_STRING); }
1243	>	public StringTask(String value) { this.value = value; }
1244	>	public String call() { return value; }
1245		}
1246
1247		public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
#	Line 754 | Line 1254 | public class JSR166TestCase extends Test
1254		}};
1255		}
1256
1257	+	public Runnable countDowner(final CountDownLatch latch) {
1258	+	return new CheckedRunnable() {
1259	+	public void realRun() throws InterruptedException {
1260	+	latch.countDown();
1261	+	}};
1262	+	}
1263	+
1264	+	public Runnable awaiter(final CountDownLatch latch) {
1265	+	return new CheckedRunnable() {
1266	+	public void realRun() throws InterruptedException {
1267	+	await(latch);
1268	+	}};
1269	+	}
1270	+
1271	+	public void await(CountDownLatch latch) {
1272	+	try {
1273	+	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1274	+	} catch (Throwable fail) {
1275	+	threadUnexpectedException(fail);
1276	+	}
1277	+	}
1278	+
1279	+	public void await(Semaphore semaphore) {
1280	+	try {
1281	+	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1282	+	} catch (Throwable fail) {
1283	+	threadUnexpectedException(fail);
1284	+	}
1285	+	}
1286	+
1287	+	//     /**
1288	+	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1289	+	//      */
1290	+	//     public void await(AtomicBoolean flag) {
1291	+	//         await(flag, LONG_DELAY_MS);
1292	+	//     }
1293	+
1294	+	//     /**
1295	+	//      * Spin-waits up to the specified timeout until flag becomes true.
1296	+	//      */
1297	+	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1298	+	//         long startTime = System.nanoTime();
1299	+	//         while (!flag.get()) {
1300	+	//             if (millisElapsedSince(startTime) > timeoutMillis)
1301	+	//                 throw new AssertionFailedError("timed out");
1302	+	//             Thread.yield();
1303	+	//         }
1304	+	//     }
1305	+
1306		public static class NPETask implements Callable<String> {
1307		public String call() { throw new NullPointerException(); }
1308		}
#	Line 764 | Line 1313 | public class JSR166TestCase extends Test
1313
1314		public class ShortRunnable extends CheckedRunnable {
1315		protected void realRun() throws Throwable {
1316	<	Thread.sleep(SHORT_DELAY_MS);
1316	>	delay(SHORT_DELAY_MS);
1317		}
1318		}
1319
1320		public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1321		protected void realRun() throws InterruptedException {
1322	<	Thread.sleep(SHORT_DELAY_MS);
1322	>	delay(SHORT_DELAY_MS);
1323		}
1324		}
1325
1326		public class SmallRunnable extends CheckedRunnable {
1327		protected void realRun() throws Throwable {
1328	<	Thread.sleep(SMALL_DELAY_MS);
1328	>	delay(SMALL_DELAY_MS);
1329		}
1330		}
1331
1332		public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1333		protected void realRun() {
1334		try {
1335	<	Thread.sleep(SMALL_DELAY_MS);
1335	>	delay(SMALL_DELAY_MS);
1336		} catch (InterruptedException ok) {}
1337		}
1338		}
1339
1340		public class SmallCallable extends CheckedCallable {
1341		protected Object realCall() throws InterruptedException {
1342	<	Thread.sleep(SMALL_DELAY_MS);
1342	>	delay(SMALL_DELAY_MS);
1343		return Boolean.TRUE;
1344		}
1345		}
1346
1347		public class MediumRunnable extends CheckedRunnable {
1348		protected void realRun() throws Throwable {
1349	<	Thread.sleep(MEDIUM_DELAY_MS);
1349	>	delay(MEDIUM_DELAY_MS);
1350		}
1351		}
1352
1353		public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1354		protected void realRun() throws InterruptedException {
1355	<	Thread.sleep(MEDIUM_DELAY_MS);
1355	>	delay(MEDIUM_DELAY_MS);
1356		}
1357		}
1358
#	Line 811 | Line 1360 | public class JSR166TestCase extends Test
1360		return new CheckedRunnable() {
1361		protected void realRun() {
1362		try {
1363	<	Thread.sleep(timeoutMillis);
1363	>	delay(timeoutMillis);
1364		} catch (InterruptedException ok) {}
1365		}};
1366		}
#	Line 819 | Line 1368 | public class JSR166TestCase extends Test
1368		public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1369		protected void realRun() {
1370		try {
1371	<	Thread.sleep(MEDIUM_DELAY_MS);
1371	>	delay(MEDIUM_DELAY_MS);
1372		} catch (InterruptedException ok) {}
1373		}
1374		}
#	Line 827 | Line 1376 | public class JSR166TestCase extends Test
1376		public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1377		protected void realRun() {
1378		try {
1379	<	Thread.sleep(LONG_DELAY_MS);
1379	>	delay(LONG_DELAY_MS);
1380		} catch (InterruptedException ok) {}
1381		}
1382		}
#	Line 851 | Line 1400 | public class JSR166TestCase extends Test
1400		public boolean isDone() { return done; }
1401		public void run() {
1402		try {
1403	<	Thread.sleep(timeoutMillis);
1403	>	delay(timeoutMillis);
1404		done = true;
1405		} catch (InterruptedException ok) {}
1406		}
#	Line 862 | Line 1411 | public class JSR166TestCase extends Test
1411		public volatile boolean done = false;
1412		public void run() {
1413		try {
1414	<	Thread.sleep(SHORT_DELAY_MS);
1414	>	delay(SHORT_DELAY_MS);
1415		done = true;
1416		} catch (InterruptedException ok) {}
1417		}
#	Line 872 | Line 1421 | public class JSR166TestCase extends Test
1421		public volatile boolean done = false;
1422		public void run() {
1423		try {
1424	<	Thread.sleep(SMALL_DELAY_MS);
1424	>	delay(SMALL_DELAY_MS);
1425		done = true;
1426		} catch (InterruptedException ok) {}
1427		}
#	Line 882 | Line 1431 | public class JSR166TestCase extends Test
1431		public volatile boolean done = false;
1432		public void run() {
1433		try {
1434	<	Thread.sleep(MEDIUM_DELAY_MS);
1434	>	delay(MEDIUM_DELAY_MS);
1435		done = true;
1436		} catch (InterruptedException ok) {}
1437		}
#	Line 892 | Line 1441 | public class JSR166TestCase extends Test
1441		public volatile boolean done = false;
1442		public void run() {
1443		try {
1444	<	Thread.sleep(LONG_DELAY_MS);
1444	>	delay(LONG_DELAY_MS);
1445		done = true;
1446		} catch (InterruptedException ok) {}
1447		}
#	Line 909 | Line 1458 | public class JSR166TestCase extends Test
1458		public volatile boolean done = false;
1459		public Object call() {
1460		try {
1461	<	Thread.sleep(SMALL_DELAY_MS);
1461	>	delay(SMALL_DELAY_MS);
1462		done = true;
1463		} catch (InterruptedException ok) {}
1464		return Boolean.TRUE;
#	Line 922 | Line 1471 | public class JSR166TestCase extends Test
1471		public abstract class CheckedRecursiveAction extends RecursiveAction {
1472		protected abstract void realCompute() throws Throwable;
1473
1474	<	public final void compute() {
1474	>	@Override protected final void compute() {
1475		try {
1476		realCompute();
1477	<	} catch (Throwable t) {
1478	<	threadUnexpectedException(t);
1477	>	} catch (Throwable fail) {
1478	>	threadUnexpectedException(fail);
1479		}
1480		}
1481		}
#	Line 937 | Line 1486 | public class JSR166TestCase extends Test
1486		public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1487		protected abstract T realCompute() throws Throwable;
1488
1489	<	public final T compute() {
1489	>	@Override protected final T compute() {
1490		try {
1491		return realCompute();
1492	<	} catch (Throwable t) {
1493	<	threadUnexpectedException(t);
1492	>	} catch (Throwable fail) {
1493	>	threadUnexpectedException(fail);
1494		return null;
1495		}
1496		}
#	Line 956 | Line 1505 | public class JSR166TestCase extends Test
1505		}
1506
1507		/**
1508	<	* A CyclicBarrier that fails with AssertionFailedErrors instead
1509	<	* of throwing checked exceptions.
1508	>	* A CyclicBarrier that uses timed await and fails with
1509	>	* AssertionFailedErrors instead of throwing checked exceptions.
1510		*/
1511		public class CheckedBarrier extends CyclicBarrier {
1512		public CheckedBarrier(int parties) { super(parties); }
1513
1514		public int await() {
1515		try {
1516	<	return super.await();
1517	<	} catch (Exception e) {
1516	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1517	>	} catch (TimeoutException timedOut) {
1518	>	throw new AssertionFailedError("timed out");
1519	>	} catch (Exception fail) {
1520		AssertionFailedError afe =
1521	<	new AssertionFailedError("Unexpected exception: " + e);
1522	<	afe.initCause(e);
1521	>	new AssertionFailedError("Unexpected exception: " + fail);
1522	>	afe.initCause(fail);
1523		throw afe;
1524		}
1525		}
1526		}
1527
1528	+	void checkEmpty(BlockingQueue q) {
1529	+	try {
1530	+	assertTrue(q.isEmpty());
1531	+	assertEquals(0, q.size());
1532	+	assertNull(q.peek());
1533	+	assertNull(q.poll());
1534	+	assertNull(q.poll(0, MILLISECONDS));
1535	+	assertEquals(q.toString(), "[]");
1536	+	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1537	+	assertFalse(q.iterator().hasNext());
1538	+	try {
1539	+	q.element();
1540	+	shouldThrow();
1541	+	} catch (NoSuchElementException success) {}
1542	+	try {
1543	+	q.iterator().next();
1544	+	shouldThrow();
1545	+	} catch (NoSuchElementException success) {}
1546	+	try {
1547	+	q.remove();
1548	+	shouldThrow();
1549	+	} catch (NoSuchElementException success) {}
1550	+	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1551	+	}
1552	+
1553	+	void assertSerialEquals(Object x, Object y) {
1554	+	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1555	+	}
1556	+
1557	+	void assertNotSerialEquals(Object x, Object y) {
1558	+	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1559	+	}
1560	+
1561	+	byte[] serialBytes(Object o) {
1562	+	try {
1563	+	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1564	+	ObjectOutputStream oos = new ObjectOutputStream(bos);
1565	+	oos.writeObject(o);
1566	+	oos.flush();
1567	+	oos.close();
1568	+	return bos.toByteArray();
1569	+	} catch (Throwable fail) {
1570	+	threadUnexpectedException(fail);
1571	+	return new byte[0];
1572	+	}
1573	+	}
1574	+
1575	+	@SuppressWarnings("unchecked")
1576	+	<T> T serialClone(T o) {
1577	+	try {
1578	+	ObjectInputStream ois = new ObjectInputStream
1579	+	(new ByteArrayInputStream(serialBytes(o)));
1580	+	T clone = (T) ois.readObject();
1581	+	assertSame(o.getClass(), clone.getClass());
1582	+	return clone;
1583	+	} catch (Throwable fail) {
1584	+	threadUnexpectedException(fail);
1585	+	return null;
1586	+	}
1587	+	}
1588	+
1589	+	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1590	+	Runnable... throwingActions) {
1591	+	for (Runnable throwingAction : throwingActions) {
1592	+	boolean threw = false;
1593	+	try { throwingAction.run(); }
1594	+	catch (Throwable t) {
1595	+	threw = true;
1596	+	if (!expectedExceptionClass.isInstance(t)) {
1597	+	AssertionFailedError afe =
1598	+	new AssertionFailedError
1599	+	("Expected " + expectedExceptionClass.getName() +
1600	+	", got " + t.getClass().getName());
1601	+	afe.initCause(t);
1602	+	threadUnexpectedException(afe);
1603	+	}
1604	+	}
1605	+	if (!threw)
1606	+	shouldThrow(expectedExceptionClass.getName());
1607	+	}
1608	+	}
1609	+
1610	+	public void assertIteratorExhausted(Iterator<?> it) {
1611	+	try {
1612	+	it.next();
1613	+	shouldThrow();
1614	+	} catch (NoSuchElementException success) {}
1615	+	assertFalse(it.hasNext());
1616	+	}
1617		}

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