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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.72 by jsr166, Sun Nov 28 08:43:53 2010 UTC vs.
Revision 1.98 by jsr166, Sun Feb 3 06:20:32 2013 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.io.ByteArrayInputStream;
11	+	import java.io.ByteArrayOutputStream;
12	+	import java.io.ObjectInputStream;
13	+	import java.io.ObjectOutputStream;
14	+	import java.lang.management.ManagementFactory;
15	+	import java.lang.management.ThreadInfo;
16	+	import java.lang.reflect.Method;
17	+	import java.util.ArrayList;
18		import java.util.Arrays;
19	+	import java.util.Date;
20	+	import java.util.Enumeration;
21	+	import java.util.List;
22		import java.util.NoSuchElementException;
23		import java.util.PropertyPermission;
24		import java.util.concurrent.*;
25	+	import java.util.concurrent.atomic.AtomicBoolean;
26		import java.util.concurrent.atomic.AtomicReference;
27		import static java.util.concurrent.TimeUnit.MILLISECONDS;
28		import static java.util.concurrent.TimeUnit.NANOSECONDS;
#	Line 63 | Line 75 | import java.security.SecurityPermission;
75		*
76		* </ol>
77		*
78	<	* <p> <b>Other notes</b>
78	>	* <p><b>Other notes</b>
79		* <ul>
80		*
81		* <li> Usually, there is one testcase method per JSR166 method
#	Line 136 | Line 148 | public class JSR166TestCase extends Test
148		}
149
150		/**
151	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
151	>	* Runs all JSR166 unit tests using junit.textui.TestRunner.
152	>	* Optional command line arg provides the number of iterations to
153	>	* repeat running the tests.
154		*/
155		public static void main(String[] args) {
156		if (useSecurityManager) {
#	Line 168 | Line 182 | public class JSR166TestCase extends Test
182		return suite;
183		}
184
185	+	public static void addNamedTestClasses(TestSuite suite,
186	+	String... testClassNames) {
187	+	for (String testClassName : testClassNames) {
188	+	try {
189	+	Class<?> testClass = Class.forName(testClassName);
190	+	Method m = testClass.getDeclaredMethod("suite",
191	+	new Class<?>[0]);
192	+	suite.addTest(newTestSuite((Test)m.invoke(null)));
193	+	} catch (Exception e) {
194	+	throw new Error("Missing test class", e);
195	+	}
196	+	}
197	+	}
198	+
199	+	public static final double JAVA_CLASS_VERSION;
200	+	static {
201	+	try {
202	+	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
203	+	new java.security.PrivilegedAction<Double>() {
204	+	public Double run() {
205	+	return Double.valueOf(System.getProperty("java.class.version"));}});
206	+	} catch (Throwable t) {
207	+	throw new Error(t);
208	+	}
209	+	}
210	+
211	+	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
212	+	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
213	+	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
214	+
215		/**
216		* Collects all JSR166 unit tests as one suite.
217		*/
218		public static Test suite() {
219	<	return newTestSuite(
219	>	// Java7+ test classes
220	>	TestSuite suite = newTestSuite(
221		ForkJoinPoolTest.suite(),
222		ForkJoinTaskTest.suite(),
223		RecursiveActionTest.suite(),
#	Line 237 | Line 282 | public class JSR166TestCase extends Test
282		TreeSetTest.suite(),
283		TreeSubMapTest.suite(),
284		TreeSubSetTest.suite());
285	+
286	+	// Java8+ test classes
287	+	if (atLeastJava8()) {
288	+	String[] java8TestClassNames = {
289	+	"StampedLockTest",
290	+	};
291	+	addNamedTestClasses(suite, java8TestClassNames);
292	+	}
293	+
294	+	return suite;
295		}
296
297
#	Line 254 | Line 309 | public class JSR166TestCase extends Test
309		return 50;
310		}
311
257	–
312		/**
313		* Sets delays as multiples of SHORT_DELAY.
314		*/
#	Line 266 | Line 320 | public class JSR166TestCase extends Test
320		}
321
322		/**
323	+	* Returns a timeout in milliseconds to be used in tests that
324	+	* verify that operations block or time out.
325	+	*/
326	+	long timeoutMillis() {
327	+	return SHORT_DELAY_MS / 4;
328	+	}
329	+
330	+	/**
331	+	* Returns a new Date instance representing a time delayMillis
332	+	* milliseconds in the future.
333	+	*/
334	+	Date delayedDate(long delayMillis) {
335	+	return new Date(System.currentTimeMillis() + delayMillis);
336	+	}
337	+
338	+	/**
339		* The first exception encountered if any threadAssertXXX method fails.
340		*/
341		private final AtomicReference<Throwable> threadFailure
#	Line 286 | Line 356 | public class JSR166TestCase extends Test
356		}
357
358		/**
359	+	* Extra checks that get done for all test cases.
360	+	*
361		* Triggers test case failure if any thread assertions have failed,
362		* by rethrowing, in the test harness thread, any exception recorded
363		* earlier by threadRecordFailure.
364	+	*
365	+	* Triggers test case failure if interrupt status is set in the main thread.
366		*/
367		public void tearDown() throws Exception {
368		Throwable t = threadFailure.getAndSet(null);
#	Line 306 | Line 380 | public class JSR166TestCase extends Test
380		throw afe;
381		}
382		}
383	+
384	+	if (Thread.interrupted())
385	+	throw new AssertionFailedError("interrupt status set in main thread");
386		}
387
388		/**
#	Line 437 | Line 514 | public class JSR166TestCase extends Test
514		else {
515		AssertionFailedError afe =
516		new AssertionFailedError("unexpected exception: " + t);
517	<	t.initCause(t);
517	>	afe.initCause(t);
518		throw afe;
519		}
520		}
521
522		/**
523	+	* Delays, via Thread.sleep, for the given millisecond delay, but
524	+	* if the sleep is shorter than specified, may re-sleep or yield
525	+	* until time elapses.
526	+	*/
527	+	static void delay(long millis) throws InterruptedException {
528	+	long startTime = System.nanoTime();
529	+	long ns = millis * 1000 * 1000;
530	+	for (;;) {
531	+	if (millis > 0L)
532	+	Thread.sleep(millis);
533	+	else // too short to sleep
534	+	Thread.yield();
535	+	long d = ns - (System.nanoTime() - startTime);
536	+	if (d > 0L)
537	+	millis = d / (1000 * 1000);
538	+	else
539	+	break;
540	+	}
541	+	}
542	+
543	+	/**
544		* Waits out termination of a thread pool or fails doing so.
545		*/
546	<	public void joinPool(ExecutorService exec) {
546	>	void joinPool(ExecutorService exec) {
547		try {
548		exec.shutdown();
549		assertTrue("ExecutorService did not terminate in a timely manner",
#	Line 457 | Line 555 | public class JSR166TestCase extends Test
555		}
556		}
557
558	+	/**
559	+	* A debugging tool to print all stack traces, as jstack does.
560	+	*/
561	+	static void printAllStackTraces() {
562	+	for (ThreadInfo info :
563	+	ManagementFactory.getThreadMXBean()
564	+	.dumpAllThreads(true, true))
565	+	System.err.print(info);
566	+	}
567	+
568	+	/**
569	+	* Checks that thread does not terminate within the default
570	+	* millisecond delay of {@code timeoutMillis()}.
571	+	*/
572	+	void assertThreadStaysAlive(Thread thread) {
573	+	assertThreadStaysAlive(thread, timeoutMillis());
574	+	}
575	+
576	+	/**
577	+	* Checks that thread does not terminate within the given millisecond delay.
578	+	*/
579	+	void assertThreadStaysAlive(Thread thread, long millis) {
580	+	try {
581	+	// No need to optimize the failing case via Thread.join.
582	+	delay(millis);
583	+	assertTrue(thread.isAlive());
584	+	} catch (InterruptedException ie) {
585	+	fail("Unexpected InterruptedException");
586	+	}
587	+	}
588	+
589	+	/**
590	+	* Checks that the threads do not terminate within the default
591	+	* millisecond delay of {@code timeoutMillis()}.
592	+	*/
593	+	void assertThreadsStayAlive(Thread... threads) {
594	+	assertThreadsStayAlive(timeoutMillis(), threads);
595	+	}
596	+
597	+	/**
598	+	* Checks that the threads do not terminate within the given millisecond delay.
599	+	*/
600	+	void assertThreadsStayAlive(long millis, Thread... threads) {
601	+	try {
602	+	// No need to optimize the failing case via Thread.join.
603	+	delay(millis);
604	+	for (Thread thread : threads)
605	+	assertTrue(thread.isAlive());
606	+	} catch (InterruptedException ie) {
607	+	fail("Unexpected InterruptedException");
608	+	}
609	+	}
610	+
611	+	/**
612	+	* Checks that future.get times out, with the default timeout of
613	+	* {@code timeoutMillis()}.
614	+	*/
615	+	void assertFutureTimesOut(Future future) {
616	+	assertFutureTimesOut(future, timeoutMillis());
617	+	}
618	+
619	+	/**
620	+	* Checks that future.get times out, with the given millisecond timeout.
621	+	*/
622	+	void assertFutureTimesOut(Future future, long timeoutMillis) {
623	+	long startTime = System.nanoTime();
624	+	try {
625	+	future.get(timeoutMillis, MILLISECONDS);
626	+	shouldThrow();
627	+	} catch (TimeoutException success) {
628	+	} catch (Exception e) {
629	+	threadUnexpectedException(e);
630	+	} finally { future.cancel(true); }
631	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
632	+	}
633
634		/**
635		* Fails with message "should throw exception".
#	Line 509 | Line 682 | public class JSR166TestCase extends Test
682		SecurityManager sm = System.getSecurityManager();
683		if (sm == null) {
684		r.run();
685	+	}
686	+	runWithSecurityManagerWithPermissions(r, permissions);
687	+	}
688	+
689	+	/**
690	+	* Runs Runnable r with a security policy that permits precisely
691	+	* the specified permissions.  If there is no current security
692	+	* manager, a temporary one is set for the duration of the
693	+	* Runnable.  We require that any security manager permit
694	+	* getPolicy/setPolicy.
695	+	*/
696	+	public void runWithSecurityManagerWithPermissions(Runnable r,
697	+	Permission... permissions) {
698	+	SecurityManager sm = System.getSecurityManager();
699	+	if (sm == null) {
700		Policy savedPolicy = Policy.getPolicy();
701		try {
702		Policy.setPolicy(permissivePolicy());
703		System.setSecurityManager(new SecurityManager());
704	<	runWithPermissions(r, permissions);
704	>	runWithSecurityManagerWithPermissions(r, permissions);
705		} finally {
706		System.setSecurityManager(null);
707		Policy.setPolicy(savedPolicy);
#	Line 561 | Line 749 | public class JSR166TestCase extends Test
749		return perms.implies(p);
750		}
751		public void refresh() {}
752	+	public String toString() {
753	+	List<Permission> ps = new ArrayList<Permission>();
754	+	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
755	+	ps.add(e.nextElement());
756	+	return "AdjustablePolicy with permissions " + ps;
757	+	}
758		}
759
760		/**
#	Line 588 | Line 782 | public class JSR166TestCase extends Test
782		*/
783		void sleep(long millis) {
784		try {
785	<	Thread.sleep(millis);
785	>	delay(millis);
786		} catch (InterruptedException ie) {
787		AssertionFailedError afe =
788		new AssertionFailedError("Unexpected InterruptedException");
#	Line 598 | Line 792 | public class JSR166TestCase extends Test
792		}
793
794		/**
795	<	* Sleeps until the timeout has elapsed, or interrupted.
602	<	* Does <em>NOT</em> throw InterruptedException.
603	<	*/
604	<	void sleepTillInterrupted(long timeoutMillis) {
605	<	try {
606	<	Thread.sleep(timeoutMillis);
607	<	} catch (InterruptedException wakeup) {}
608	<	}
609	<
610	<	/**
611	<	* Waits up to the specified number of milliseconds for the given
795	>	* Spin-waits up to the specified number of milliseconds for the given
796		* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
797		*/
798		void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
799	<	long timeoutNanos = timeoutMillis * 1000L * 1000L;
616	<	long t0 = System.nanoTime();
799	>	long startTime = System.nanoTime();
800		for (;;) {
801		Thread.State s = thread.getState();
802		if (s == Thread.State.BLOCKED ||
#	Line 622 | Line 805 | public class JSR166TestCase extends Test
805		return;
806		else if (s == Thread.State.TERMINATED)
807		fail("Unexpected thread termination");
808	<	else if (System.nanoTime() - t0 > timeoutNanos) {
808	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
809		threadAssertTrue(thread.isAlive());
810		return;
811		}
#	Line 631 | Line 814 | public class JSR166TestCase extends Test
814		}
815
816		/**
817	+	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
818	+	* state: BLOCKED, WAITING, or TIMED_WAITING.
819	+	*/
820	+	void waitForThreadToEnterWaitState(Thread thread) {
821	+	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
822	+	}
823	+
824	+	/**
825		* Returns the number of milliseconds since time given by
826		* startNanoTime, which must have been previously returned from a
827		* call to {@link System.nanoTime()}.
#	Line 660 | Line 851 | public class JSR166TestCase extends Test
851		} catch (InterruptedException ie) {
852		threadUnexpectedException(ie);
853		} finally {
854	<	if (t.isAlive()) {
854	>	if (t.getState() != Thread.State.TERMINATED) {
855		t.interrupt();
856		fail("Test timed out");
857		}
858		}
859		}
860
861	+	/**
862	+	* Waits for LONG_DELAY_MS milliseconds for the thread to
863	+	* terminate (using {@link Thread#join(long)}), else interrupts
864	+	* the thread (in the hope that it may terminate later) and fails.
865	+	*/
866	+	void awaitTermination(Thread t) {
867	+	awaitTermination(t, LONG_DELAY_MS);
868	+	}
869	+
870		// Some convenient Runnable classes
871
872		public abstract class CheckedRunnable implements Runnable {
#	Line 729 | Line 929 | public class JSR166TestCase extends Test
929		realRun();
930		threadShouldThrow("InterruptedException");
931		} catch (InterruptedException success) {
932	+	threadAssertFalse(Thread.interrupted());
933		} catch (Throwable t) {
934		threadUnexpectedException(t);
935		}
#	Line 758 | Line 959 | public class JSR166TestCase extends Test
959		threadShouldThrow("InterruptedException");
960		return result;
961		} catch (InterruptedException success) {
962	+	threadAssertFalse(Thread.interrupted());
963		} catch (Throwable t) {
964		threadUnexpectedException(t);
965		}
#	Line 789 | Line 991 | public class JSR166TestCase extends Test
991		}};
992		}
993
994	+	public Runnable awaiter(final CountDownLatch latch) {
995	+	return new CheckedRunnable() {
996	+	public void realRun() throws InterruptedException {
997	+	await(latch);
998	+	}};
999	+	}
1000	+
1001	+	public void await(CountDownLatch latch) {
1002	+	try {
1003	+	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1004	+	} catch (Throwable t) {
1005	+	threadUnexpectedException(t);
1006	+	}
1007	+	}
1008	+
1009	+	public void await(Semaphore semaphore) {
1010	+	try {
1011	+	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1012	+	} catch (Throwable t) {
1013	+	threadUnexpectedException(t);
1014	+	}
1015	+	}
1016	+
1017	+	//     /**
1018	+	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1019	+	//      */
1020	+	//     public void await(AtomicBoolean flag) {
1021	+	//         await(flag, LONG_DELAY_MS);
1022	+	//     }
1023	+
1024	+	//     /**
1025	+	//      * Spin-waits up to the specified timeout until flag becomes true.
1026	+	//      */
1027	+	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1028	+	//         long startTime = System.nanoTime();
1029	+	//         while (!flag.get()) {
1030	+	//             if (millisElapsedSince(startTime) > timeoutMillis)
1031	+	//                 throw new AssertionFailedError("timed out");
1032	+	//             Thread.yield();
1033	+	//         }
1034	+	//     }
1035	+
1036		public static class NPETask implements Callable<String> {
1037		public String call() { throw new NullPointerException(); }
1038		}
#	Line 799 | Line 1043 | public class JSR166TestCase extends Test
1043
1044		public class ShortRunnable extends CheckedRunnable {
1045		protected void realRun() throws Throwable {
1046	<	Thread.sleep(SHORT_DELAY_MS);
1046	>	delay(SHORT_DELAY_MS);
1047		}
1048		}
1049
1050		public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1051		protected void realRun() throws InterruptedException {
1052	<	Thread.sleep(SHORT_DELAY_MS);
1052	>	delay(SHORT_DELAY_MS);
1053		}
1054		}
1055
1056		public class SmallRunnable extends CheckedRunnable {
1057		protected void realRun() throws Throwable {
1058	<	Thread.sleep(SMALL_DELAY_MS);
1058	>	delay(SMALL_DELAY_MS);
1059		}
1060		}
1061
1062		public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1063		protected void realRun() {
1064		try {
1065	<	Thread.sleep(SMALL_DELAY_MS);
1065	>	delay(SMALL_DELAY_MS);
1066		} catch (InterruptedException ok) {}
1067		}
1068		}
1069
1070		public class SmallCallable extends CheckedCallable {
1071		protected Object realCall() throws InterruptedException {
1072	<	Thread.sleep(SMALL_DELAY_MS);
1072	>	delay(SMALL_DELAY_MS);
1073		return Boolean.TRUE;
1074		}
1075		}
1076
1077		public class MediumRunnable extends CheckedRunnable {
1078		protected void realRun() throws Throwable {
1079	<	Thread.sleep(MEDIUM_DELAY_MS);
1079	>	delay(MEDIUM_DELAY_MS);
1080		}
1081		}
1082
1083		public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1084		protected void realRun() throws InterruptedException {
1085	<	Thread.sleep(MEDIUM_DELAY_MS);
1085	>	delay(MEDIUM_DELAY_MS);
1086		}
1087		}
1088
#	Line 846 | Line 1090 | public class JSR166TestCase extends Test
1090		return new CheckedRunnable() {
1091		protected void realRun() {
1092		try {
1093	<	Thread.sleep(timeoutMillis);
1093	>	delay(timeoutMillis);
1094		} catch (InterruptedException ok) {}
1095		}};
1096		}
#	Line 854 | Line 1098 | public class JSR166TestCase extends Test
1098		public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1099		protected void realRun() {
1100		try {
1101	<	Thread.sleep(MEDIUM_DELAY_MS);
1101	>	delay(MEDIUM_DELAY_MS);
1102		} catch (InterruptedException ok) {}
1103		}
1104		}
#	Line 862 | Line 1106 | public class JSR166TestCase extends Test
1106		public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1107		protected void realRun() {
1108		try {
1109	<	Thread.sleep(LONG_DELAY_MS);
1109	>	delay(LONG_DELAY_MS);
1110		} catch (InterruptedException ok) {}
1111		}
1112		}
#	Line 886 | Line 1130 | public class JSR166TestCase extends Test
1130		public boolean isDone() { return done; }
1131		public void run() {
1132		try {
1133	<	Thread.sleep(timeoutMillis);
1133	>	delay(timeoutMillis);
1134		done = true;
1135		} catch (InterruptedException ok) {}
1136		}
#	Line 897 | Line 1141 | public class JSR166TestCase extends Test
1141		public volatile boolean done = false;
1142		public void run() {
1143		try {
1144	<	Thread.sleep(SHORT_DELAY_MS);
1144	>	delay(SHORT_DELAY_MS);
1145		done = true;
1146		} catch (InterruptedException ok) {}
1147		}
#	Line 907 | Line 1151 | public class JSR166TestCase extends Test
1151		public volatile boolean done = false;
1152		public void run() {
1153		try {
1154	<	Thread.sleep(SMALL_DELAY_MS);
1154	>	delay(SMALL_DELAY_MS);
1155		done = true;
1156		} catch (InterruptedException ok) {}
1157		}
#	Line 917 | Line 1161 | public class JSR166TestCase extends Test
1161		public volatile boolean done = false;
1162		public void run() {
1163		try {
1164	<	Thread.sleep(MEDIUM_DELAY_MS);
1164	>	delay(MEDIUM_DELAY_MS);
1165		done = true;
1166		} catch (InterruptedException ok) {}
1167		}
#	Line 927 | Line 1171 | public class JSR166TestCase extends Test
1171		public volatile boolean done = false;
1172		public void run() {
1173		try {
1174	<	Thread.sleep(LONG_DELAY_MS);
1174	>	delay(LONG_DELAY_MS);
1175		done = true;
1176		} catch (InterruptedException ok) {}
1177		}
#	Line 944 | Line 1188 | public class JSR166TestCase extends Test
1188		public volatile boolean done = false;
1189		public Object call() {
1190		try {
1191	<	Thread.sleep(SMALL_DELAY_MS);
1191	>	delay(SMALL_DELAY_MS);
1192		done = true;
1193		} catch (InterruptedException ok) {}
1194		return Boolean.TRUE;
#	Line 991 | Line 1235 | public class JSR166TestCase extends Test
1235		}
1236
1237		/**
1238	<	* A CyclicBarrier that fails with AssertionFailedErrors instead
1239	<	* of throwing checked exceptions.
1238	>	* A CyclicBarrier that uses timed await and fails with
1239	>	* AssertionFailedErrors instead of throwing checked exceptions.
1240		*/
1241		public class CheckedBarrier extends CyclicBarrier {
1242		public CheckedBarrier(int parties) { super(parties); }
1243
1244		public int await() {
1245		try {
1246	<	return super.await();
1246	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1247	>	} catch (TimeoutException e) {
1248	>	throw new AssertionFailedError("timed out");
1249		} catch (Exception e) {
1250		AssertionFailedError afe =
1251		new AssertionFailedError("Unexpected exception: " + e);
#	Line 1009 | Line 1255 | public class JSR166TestCase extends Test
1255		}
1256		}
1257
1258	<	public void checkEmpty(BlockingQueue q) {
1258	>	void checkEmpty(BlockingQueue q) {
1259		try {
1260		assertTrue(q.isEmpty());
1261		assertEquals(0, q.size());
#	Line 1036 | Line 1282 | public class JSR166TestCase extends Test
1282		}
1283		}
1284
1285	+	void assertSerialEquals(Object x, Object y) {
1286	+	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1287	+	}
1288	+
1289	+	void assertNotSerialEquals(Object x, Object y) {
1290	+	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1291	+	}
1292	+
1293	+	byte[] serialBytes(Object o) {
1294	+	try {
1295	+	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1296	+	ObjectOutputStream oos = new ObjectOutputStream(bos);
1297	+	oos.writeObject(o);
1298	+	oos.flush();
1299	+	oos.close();
1300	+	return bos.toByteArray();
1301	+	} catch (Throwable t) {
1302	+	threadUnexpectedException(t);
1303	+	return new byte[0];
1304	+	}
1305	+	}
1306	+
1307	+	@SuppressWarnings("unchecked")
1308	+	<T> T serialClone(T o) {
1309	+	try {
1310	+	ObjectInputStream ois = new ObjectInputStream
1311	+	(new ByteArrayInputStream(serialBytes(o)));
1312	+	T clone = (T) ois.readObject();
1313	+	assertSame(o.getClass(), clone.getClass());
1314	+	return clone;
1315	+	} catch (Throwable t) {
1316	+	threadUnexpectedException(t);
1317	+	return null;
1318	+	}
1319	+	}
1320		}

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