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Comparing jsr166/src/test/tck/TimeUnitTest.java (file contents):
Revision 1.2 by dl, Sun Sep 7 20:39:11 2003 UTC vs.
Revision 1.23 by jsr166, Tue Sep 24 16:48:52 2013 UTC

#	Line 1 | Line 1
1		/*
2	<	* Written by members of JCP JSR-166 Expert Group and released to the
3	<	* public domain. Use, modify, and redistribute this code in any way
4	<	* without acknowledgement. Other contributors include Andrew Wright,
5	<	* Jeffrey Hayes, Pat Fischer, Mike Judd.
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/publicdomain/zero/1.0/
5	>	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	>	* Pat Fisher, Mike Judd.
7		*/
8
8	–
9		import junit.framework.*;
10	<	import java.util.concurrent.*;
11	<	import java.io.*;
12	<
13	<	public class TimeUnitTest extends TestCase {
14	<	static public boolean DEBUG = false;
15	<
10	>	import java.util.concurrent.CountDownLatch;
11	>	import java.util.concurrent.TimeUnit;
12	>	import static java.util.concurrent.TimeUnit.*;
13
14	+	public class TimeUnitTest extends JSR166TestCase {
15		public static void main(String[] args) {
16	<	junit.textui.TestRunner.run(suite());
16	>	junit.textui.TestRunner.run(suite());
17		}
18	<
18	>
19		public static Test suite() {
20	<	return new TestSuite(TimeUnitTest.class);
20	>	return new TestSuite(TimeUnitTest.class);
21		}
22
23	+	// (loops to 88888 check increments at all time divisions.)
24	+
25	+	/**
26	+	* convert correctly converts sample values across the units
27	+	*/
28		public void testConvert() {
29	<	for (long t = 0; t < 10; ++t) {
30	<	assertEquals(t,
31	<	TimeUnit.SECONDS.convert(t,
32	<	TimeUnit.SECONDS));
33	<	assertEquals(t,
34	<	TimeUnit.SECONDS.convert(1000 * t,
35	<	TimeUnit.MILLISECONDS));
36	<	assertEquals(t,
37	<	TimeUnit.SECONDS.convert(1000000 * t,
38	<	TimeUnit.MICROSECONDS));
39	<	assertEquals(t,
40	<	TimeUnit.SECONDS.convert(1000000000 * t,
41	<	TimeUnit.NANOSECONDS));
42	<	assertEquals(1000 * t,
43	<	TimeUnit.MILLISECONDS.convert(t,
44	<	TimeUnit.SECONDS));
45	<	assertEquals(t,
46	<	TimeUnit.MILLISECONDS.convert(t,
47	<	TimeUnit.MILLISECONDS));
48	<	assertEquals(t,
49	<	TimeUnit.MILLISECONDS.convert(1000 * t,
50	<	TimeUnit.MICROSECONDS));
51	<	assertEquals(t,
52	<	TimeUnit.MILLISECONDS.convert(1000000 * t,
53	<	TimeUnit.NANOSECONDS));
54	<	assertEquals(1000000 * t,
55	<	TimeUnit.MICROSECONDS.convert(t,
56	<	TimeUnit.SECONDS));
57	<	assertEquals(1000 * t,
58	<	TimeUnit.MICROSECONDS.convert(t,
59	<	TimeUnit.MILLISECONDS));
60	<	assertEquals(t,
61	<	TimeUnit.MICROSECONDS.convert(t,
62	<	TimeUnit.MICROSECONDS));
63	<	assertEquals(t,
64	<	TimeUnit.MICROSECONDS.convert(1000 * t,
65	<	TimeUnit.NANOSECONDS));
66	<	assertEquals(1000000000 * t,
67	<	TimeUnit.NANOSECONDS.convert(t,
68	<	TimeUnit.SECONDS));
69	<	assertEquals(1000000 * t,
70	<	TimeUnit.NANOSECONDS.convert(t,
71	<	TimeUnit.MILLISECONDS));
72	<	assertEquals(1000 * t,
73	<	TimeUnit.NANOSECONDS.convert(t,
74	<	TimeUnit.MICROSECONDS));
75	<	assertEquals(t,
76	<	TimeUnit.NANOSECONDS.convert(t,
77	<	TimeUnit.NANOSECONDS));
29	>	for (long t = 0; t < 88888; ++t) {
30	>	assertEquals(t*60*60*24,
31	>	SECONDS.convert(t, DAYS));
32	>	assertEquals(t*60*60,
33	>	SECONDS.convert(t, HOURS));
34	>	assertEquals(t*60,
35	>	SECONDS.convert(t, MINUTES));
36	>	assertEquals(t,
37	>	SECONDS.convert(t, SECONDS));
38	>	assertEquals(t,
39	>	SECONDS.convert(1000L*t, MILLISECONDS));
40	>	assertEquals(t,
41	>	SECONDS.convert(1000000L*t, MICROSECONDS));
42	>	assertEquals(t,
43	>	SECONDS.convert(1000000000L*t, NANOSECONDS));
44	>
45	>	assertEquals(1000L*t*60*60*24,
46	>	MILLISECONDS.convert(t, DAYS));
47	>	assertEquals(1000L*t*60*60,
48	>	MILLISECONDS.convert(t, HOURS));
49	>	assertEquals(1000L*t*60,
50	>	MILLISECONDS.convert(t, MINUTES));
51	>	assertEquals(1000L*t,
52	>	MILLISECONDS.convert(t, SECONDS));
53	>	assertEquals(t,
54	>	MILLISECONDS.convert(t, MILLISECONDS));
55	>	assertEquals(t,
56	>	MILLISECONDS.convert(1000L*t, MICROSECONDS));
57	>	assertEquals(t,
58	>	MILLISECONDS.convert(1000000L*t, NANOSECONDS));
59	>
60	>	assertEquals(1000000L*t*60*60*24,
61	>	MICROSECONDS.convert(t, DAYS));
62	>	assertEquals(1000000L*t*60*60,
63	>	MICROSECONDS.convert(t, HOURS));
64	>	assertEquals(1000000L*t*60,
65	>	MICROSECONDS.convert(t, MINUTES));
66	>	assertEquals(1000000L*t,
67	>	MICROSECONDS.convert(t, SECONDS));
68	>	assertEquals(1000L*t,
69	>	MICROSECONDS.convert(t, MILLISECONDS));
70	>	assertEquals(t,
71	>	MICROSECONDS.convert(t, MICROSECONDS));
72	>	assertEquals(t,
73	>	MICROSECONDS.convert(1000L*t, NANOSECONDS));
74	>
75	>	assertEquals(1000000000L*t*60*60*24,
76	>	NANOSECONDS.convert(t, DAYS));
77	>	assertEquals(1000000000L*t*60*60,
78	>	NANOSECONDS.convert(t, HOURS));
79	>	assertEquals(1000000000L*t*60,
80	>	NANOSECONDS.convert(t, MINUTES));
81	>	assertEquals(1000000000L*t,
82	>	NANOSECONDS.convert(t, SECONDS));
83	>	assertEquals(1000000L*t,
84	>	NANOSECONDS.convert(t, MILLISECONDS));
85	>	assertEquals(1000L*t,
86	>	NANOSECONDS.convert(t, MICROSECONDS));
87	>	assertEquals(t,
88	>	NANOSECONDS.convert(t, NANOSECONDS));
89		}
90		}
91
92	+	/**
93	+	* toNanos correctly converts sample values in different units to
94	+	* nanoseconds
95	+	*/
96		public void testToNanos() {
97	<	for (long t = 0; t < 10; ++t) {
98	<	assertEquals(1000000000 * t,
99	<	TimeUnit.SECONDS.toNanos(t));
100	<
101	<	assertEquals(1000000 * t,
102	<	TimeUnit.MILLISECONDS.toNanos(t));
103	<	assertEquals(1000 * t,
104	<	TimeUnit.MICROSECONDS.toNanos(t));
105	<	assertEquals(t,
106	<	TimeUnit.SECONDS.NANOSECONDS.toNanos(t));
97	>	for (long t = 0; t < 88888; ++t) {
98	>	assertEquals(t*1000000000L*60*60*24,
99	>	DAYS.toNanos(t));
100	>	assertEquals(t*1000000000L*60*60,
101	>	HOURS.toNanos(t));
102	>	assertEquals(t*1000000000L*60,
103	>	MINUTES.toNanos(t));
104	>	assertEquals(1000000000L*t,
105	>	SECONDS.toNanos(t));
106	>	assertEquals(1000000L*t,
107	>	MILLISECONDS.toNanos(t));
108	>	assertEquals(1000L*t,
109	>	MICROSECONDS.toNanos(t));
110	>	assertEquals(t,
111	>	NANOSECONDS.toNanos(t));
112	>	}
113	>	}
114	>
115	>	/**
116	>	* toMicros correctly converts sample values in different units to
117	>	* microseconds
118	>	*/
119	>	public void testToMicros() {
120	>	for (long t = 0; t < 88888; ++t) {
121	>	assertEquals(t*1000000L*60*60*24,
122	>	DAYS.toMicros(t));
123	>	assertEquals(t*1000000L*60*60,
124	>	HOURS.toMicros(t));
125	>	assertEquals(t*1000000L*60,
126	>	MINUTES.toMicros(t));
127	>	assertEquals(1000000L*t,
128	>	SECONDS.toMicros(t));
129	>	assertEquals(1000L*t,
130	>	MILLISECONDS.toMicros(t));
131	>	assertEquals(t,
132	>	MICROSECONDS.toMicros(t));
133	>	assertEquals(t,
134	>	NANOSECONDS.toMicros(t*1000L));
135	>	}
136	>	}
137	>
138	>	/**
139	>	* toMillis correctly converts sample values in different units to
140	>	* milliseconds
141	>	*/
142	>	public void testToMillis() {
143	>	for (long t = 0; t < 88888; ++t) {
144	>	assertEquals(t*1000L*60*60*24,
145	>	DAYS.toMillis(t));
146	>	assertEquals(t*1000L*60*60,
147	>	HOURS.toMillis(t));
148	>	assertEquals(t*1000L*60,
149	>	MINUTES.toMillis(t));
150	>	assertEquals(1000L*t,
151	>	SECONDS.toMillis(t));
152	>	assertEquals(t,
153	>	MILLISECONDS.toMillis(t));
154	>	assertEquals(t,
155	>	MICROSECONDS.toMillis(t*1000L));
156	>	assertEquals(t,
157	>	NANOSECONDS.toMillis(t*1000000L));
158		}
159		}
160
161	+	/**
162	+	* toSeconds correctly converts sample values in different units to
163	+	* seconds
164	+	*/
165	+	public void testToSeconds() {
166	+	for (long t = 0; t < 88888; ++t) {
167	+	assertEquals(t*60*60*24,
168	+	DAYS.toSeconds(t));
169	+	assertEquals(t*60*60,
170	+	HOURS.toSeconds(t));
171	+	assertEquals(t*60,
172	+	MINUTES.toSeconds(t));
173	+	assertEquals(t,
174	+	SECONDS.toSeconds(t));
175	+	assertEquals(t,
176	+	MILLISECONDS.toSeconds(t*1000L));
177	+	assertEquals(t,
178	+	MICROSECONDS.toSeconds(t*1000000L));
179	+	assertEquals(t,
180	+	NANOSECONDS.toSeconds(t*1000000000L));
181	+	}
182	+	}
183	+
184	+	/**
185	+	* toMinutes correctly converts sample values in different units to
186	+	* minutes
187	+	*/
188	+	public void testToMinutes() {
189	+	for (long t = 0; t < 88888; ++t) {
190	+	assertEquals(t*60*24,
191	+	DAYS.toMinutes(t));
192	+	assertEquals(t*60,
193	+	HOURS.toMinutes(t));
194	+	assertEquals(t,
195	+	MINUTES.toMinutes(t));
196	+	assertEquals(t,
197	+	SECONDS.toMinutes(t*60));
198	+	assertEquals(t,
199	+	MILLISECONDS.toMinutes(t*1000L*60));
200	+	assertEquals(t,
201	+	MICROSECONDS.toMinutes(t*1000000L*60));
202	+	assertEquals(t,
203	+	NANOSECONDS.toMinutes(t*1000000000L*60));
204	+	}
205	+	}
206	+
207	+	/**
208	+	* toHours correctly converts sample values in different units to
209	+	* hours
210	+	*/
211	+	public void testToHours() {
212	+	for (long t = 0; t < 88888; ++t) {
213	+	assertEquals(t*24,
214	+	DAYS.toHours(t));
215	+	assertEquals(t,
216	+	HOURS.toHours(t));
217	+	assertEquals(t,
218	+	MINUTES.toHours(t*60));
219	+	assertEquals(t,
220	+	SECONDS.toHours(t*60*60));
221	+	assertEquals(t,
222	+	MILLISECONDS.toHours(t*1000L*60*60));
223	+	assertEquals(t,
224	+	MICROSECONDS.toHours(t*1000000L*60*60));
225	+	assertEquals(t,
226	+	NANOSECONDS.toHours(t*1000000000L*60*60));
227	+	}
228	+	}
229	+
230	+	/**
231	+	* toDays correctly converts sample values in different units to
232	+	* days
233	+	*/
234	+	public void testToDays() {
235	+	for (long t = 0; t < 88888; ++t) {
236	+	assertEquals(t,
237	+	DAYS.toDays(t));
238	+	assertEquals(t,
239	+	HOURS.toDays(t*24));
240	+	assertEquals(t,
241	+	MINUTES.toDays(t*60*24));
242	+	assertEquals(t,
243	+	SECONDS.toDays(t*60*60*24));
244	+	assertEquals(t,
245	+	MILLISECONDS.toDays(t*1000L*60*60*24));
246	+	assertEquals(t,
247	+	MICROSECONDS.toDays(t*1000000L*60*60*24));
248	+	assertEquals(t,
249	+	NANOSECONDS.toDays(t*1000000000L*60*60*24));
250	+	}
251	+	}
252
253	+	/**
254	+	* convert saturates positive too-large values to Long.MAX_VALUE
255	+	* and negative to LONG.MIN_VALUE
256	+	*/
257		public void testConvertSaturate() {
258		assertEquals(Long.MAX_VALUE,
259	<	TimeUnit.NANOSECONDS.convert(Long.MAX_VALUE / 2,
96	<	TimeUnit.SECONDS));
259	>	NANOSECONDS.convert(Long.MAX_VALUE / 2, SECONDS));
260		assertEquals(Long.MIN_VALUE,
261	<	TimeUnit.NANOSECONDS.convert(-Long.MAX_VALUE / 4,
262	<	TimeUnit.SECONDS));
263	<
261	>	NANOSECONDS.convert(-Long.MAX_VALUE / 4, SECONDS));
262	>	assertEquals(Long.MAX_VALUE,
263	>	NANOSECONDS.convert(Long.MAX_VALUE / 2, MINUTES));
264	>	assertEquals(Long.MIN_VALUE,
265	>	NANOSECONDS.convert(-Long.MAX_VALUE / 4, MINUTES));
266	>	assertEquals(Long.MAX_VALUE,
267	>	NANOSECONDS.convert(Long.MAX_VALUE / 2, HOURS));
268	>	assertEquals(Long.MIN_VALUE,
269	>	NANOSECONDS.convert(-Long.MAX_VALUE / 4, HOURS));
270	>	assertEquals(Long.MAX_VALUE,
271	>	NANOSECONDS.convert(Long.MAX_VALUE / 2, DAYS));
272	>	assertEquals(Long.MIN_VALUE,
273	>	NANOSECONDS.convert(-Long.MAX_VALUE / 4, DAYS));
274		}
275
276	+	/**
277	+	* toNanos saturates positive too-large values to Long.MAX_VALUE
278	+	* and negative to LONG.MIN_VALUE
279	+	*/
280		public void testToNanosSaturate() {
281	<	assertEquals(Long.MAX_VALUE,
282	<	TimeUnit.MILLISECONDS.toNanos(Long.MAX_VALUE / 2));
283	<	assertEquals(Long.MIN_VALUE,
284	<	TimeUnit.MILLISECONDS.toNanos(-Long.MAX_VALUE / 3));
108	<
281	>	assertEquals(Long.MAX_VALUE,
282	>	MILLISECONDS.toNanos(Long.MAX_VALUE / 2));
283	>	assertEquals(Long.MIN_VALUE,
284	>	MILLISECONDS.toNanos(-Long.MAX_VALUE / 3));
285		}
286
287	<
287	>	/**
288	>	* toString returns name of unit
289	>	*/
290		public void testToString() {
291	<	String s = TimeUnit.SECONDS.toString();
114	<	assertTrue(s.indexOf("econd") >= 0);
291	>	assertEquals("SECONDS", SECONDS.toString());
292		}
293
117	–	// Exception tests
118	–
294		/**
295	<	*  This test specifically to catch the unreported exception
295	>	* name returns name of unit
296		*/
297	<	public void testTimedWaitForUnreportedIllegalMonitorException() {
298	<	//created a new thread with anonymous runnable
124	<
125	<	Thread t = new Thread(new Runnable() {
126	<	public void run() {
127	<	Object o = new Object();
128	<	TimeUnit tu = TimeUnit.MILLISECONDS;
129	<	try {
130	<	tu.timedWait(o,40000);
131	<	fail("should throw");
132	<	}
133	<	catch (InterruptedException ie) {
134	<	fail("should not throw IE here");
135	<	}
136	<	catch(IllegalMonitorStateException success) {
137	<	}
138	<
139	<	}
140	<	});
141	<	t.start();
142	<	try {
143	<	Thread.sleep(100);
144	<	t.interrupt();
145	<	t.join();
146	<	} catch(Exception e) {
147	<	fail("Unexpected exception");
148	<	}
297	>	public void testName() {
298	>	assertEquals("SECONDS", SECONDS.name());
299		}
300	<
300	>
301		/**
302	<	*  Test to verify that timedWait will throw InterruptedException.
303	<	*  Thread t waits on timedWait while the main thread interrupts it.
304	<	*  Note:  This does not throw IllegalMonitorException since timeWait
305	<	*         is synchronized on o
306	<	*/
307	<	public void testTimedWait() {
308	<	Thread t = new Thread(new Runnable() {
309	<	public void run() {
310	<	Object o = new Object();
311	<
312	<	TimeUnit tu = TimeUnit.MILLISECONDS;
313	<	try {
314	<	synchronized(o) {
315	<	tu.timedWait(o,1000);
316	<	}
317	<	fail("should throw");
168	<	}
169	<	catch(InterruptedException success) {}
170	<	catch(IllegalMonitorStateException failure) {
171	<	fail("should not throw");
172	<	}
173	<	}
174	<	});
175	<	t.start();
176	<	try {
177	<	Thread.sleep(100);
178	<	t.interrupt();
179	<	t.join();
180	<	} catch(Exception e) {
181	<	fail("Unexpected exception");
182	<	}
302	>	* Timed wait without holding lock throws
303	>	* IllegalMonitorStateException
304	>	*/
305	>	public void testTimedWait_IllegalMonitorException() {
306	>	Thread t = newStartedThread(new CheckedRunnable() {
307	>	public void realRun() throws InterruptedException {
308	>	Object o = new Object();
309	>	TimeUnit tu = MILLISECONDS;
310	>
311	>	try {
312	>	tu.timedWait(o, LONG_DELAY_MS);
313	>	threadShouldThrow();
314	>	} catch (IllegalMonitorStateException success) {}
315	>	}});
316	>
317	>	awaitTermination(t);
318		}
319	<
185	<
319	>
320		/**
321	<	*  Test to verify that timedJoin will throw InterruptedException.
188	<	*  Thread t waits on timedJoin while the main thread interrupts it.
321	>	* timedWait throws InterruptedException when interrupted
322		*/
323	<	public void testTimedJoin() {
324	<	Thread t = new Thread(new Runnable() {
325	<	public void run() {
326	<	TimeUnit tu = TimeUnit.MILLISECONDS;
327	<	try {
328	<	Thread s = new Thread(new Runnable() {
329	<	public void run() {
330	<	try{
331	<	Thread.sleep(1000);
332	<	}catch(InterruptedException success){}
333	<	}
334	<	});
335	<	s.start();
336	<	tu.timedJoin(s,1000);
337	<	fail("should throw");
338	<	}
339	<	catch(Exception e) {}
340	<	}
341	<	});
342	<	t.start();
343	<	try {
344	<	Thread.sleep(100);
345	<	t.interrupt();
346	<	t.join();
347	<	} catch(Exception e) {
348	<	fail("Unexpected exception");
349	<	}
323	>	public void testTimedWait_Interruptible() {
324	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
325	>	Thread t = newStartedThread(new CheckedRunnable() {
326	>	public void realRun() throws InterruptedException {
327	>	Object o = new Object();
328	>	TimeUnit tu = MILLISECONDS;
329	>
330	>	Thread.currentThread().interrupt();
331	>	try {
332	>	synchronized (o) {
333	>	tu.timedWait(o, LONG_DELAY_MS);
334	>	}
335	>	shouldThrow();
336	>	} catch (InterruptedException success) {}
337	>	assertFalse(Thread.interrupted());
338	>
339	>	pleaseInterrupt.countDown();
340	>	try {
341	>	synchronized (o) {
342	>	tu.timedWait(o, LONG_DELAY_MS);
343	>	}
344	>	shouldThrow();
345	>	} catch (InterruptedException success) {}
346	>	assertFalse(Thread.interrupted());
347	>	}});
348	>
349	>	await(pleaseInterrupt);
350	>	assertThreadStaysAlive(t);
351	>	t.interrupt();
352	>	awaitTermination(t);
353		}
354	<
354	>
355		/**
356	<	*  Test to verify that timedSleep will throw InterruptedException.
221	<	*  Thread t waits on timedSleep while the main thread interrupts it.
356	>	* timedJoin throws InterruptedException when interrupted
357		*/
358	<	public void testTimedSleep() {
359	<	//created a new thread with anonymous runnable
360	<
361	<	Thread t = new Thread(new Runnable() {
362	<	public void run() {
363	<	TimeUnit tu = TimeUnit.MILLISECONDS;
364	<	try {
365	<	tu.sleep(1000);
366	<	fail("should throw");
367	<	}
368	<	catch(InterruptedException success) {}
369	<	}
370	<	});
371	<	t.start();
372	<	try {
373	<	Thread.sleep(100);
374	<	t.interrupt();
375	<	t.join();
376	<	} catch(Exception e) {
377	<	fail("Unexpected exception");
378	<	}
358	>	public void testTimedJoin_Interruptible() {
359	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
360	>	final Thread s = newStartedThread(new CheckedInterruptedRunnable() {
361	>	public void realRun() throws InterruptedException {
362	>	Thread.sleep(LONG_DELAY_MS);
363	>	}});
364	>	final Thread t = newStartedThread(new CheckedRunnable() {
365	>	public void realRun() throws InterruptedException {
366	>	TimeUnit tu = MILLISECONDS;
367	>	Thread.currentThread().interrupt();
368	>	try {
369	>	tu.timedJoin(s, LONG_DELAY_MS);
370	>	shouldThrow();
371	>	} catch (InterruptedException success) {}
372	>	assertFalse(Thread.interrupted());
373	>
374	>	pleaseInterrupt.countDown();
375	>	try {
376	>	tu.timedJoin(s, LONG_DELAY_MS);
377	>	shouldThrow();
378	>	} catch (InterruptedException success) {}
379	>	assertFalse(Thread.interrupted());
380	>	}});
381	>
382	>	await(pleaseInterrupt);
383	>	assertThreadStaysAlive(t);
384	>	t.interrupt();
385	>	awaitTermination(t);
386	>	s.interrupt();
387	>	awaitTermination(s);
388		}
389
390	<	public void testSerialization() {
391	<	TimeUnit q = TimeUnit.MILLISECONDS;
390	>	/**
391	>	* timedSleep throws InterruptedException when interrupted
392	>	*/
393	>	public void testTimedSleep_Interruptible() {
394	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
395	>	Thread t = newStartedThread(new CheckedRunnable() {
396	>	public void realRun() throws InterruptedException {
397	>	TimeUnit tu = MILLISECONDS;
398	>	Thread.currentThread().interrupt();
399	>	try {
400	>	tu.sleep(LONG_DELAY_MS);
401	>	shouldThrow();
402	>	} catch (InterruptedException success) {}
403	>	assertFalse(Thread.interrupted());
404	>
405	>	pleaseInterrupt.countDown();
406	>	try {
407	>	tu.sleep(LONG_DELAY_MS);
408	>	shouldThrow();
409	>	} catch (InterruptedException success) {}
410	>	assertFalse(Thread.interrupted());
411	>	}});
412	>
413	>	await(pleaseInterrupt);
414	>	assertThreadStaysAlive(t);
415	>	t.interrupt();
416	>	awaitTermination(t);
417	>	}
418
419	<	try {
420	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
421	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
422	<	out.writeObject(q);
423	<	out.close();
424	<
255	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
256	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
257	<	TimeUnit r = (TimeUnit)in.readObject();
258	<
259	<	assertEquals(q.toString(), r.toString());
260	<	} catch(Exception e){
261	<	e.printStackTrace();
262	<	fail("unexpected exception");
263	<	}
419	>	/**
420	>	* a deserialized serialized unit is the same instance
421	>	*/
422	>	public void testSerialization() throws Exception {
423	>	TimeUnit x = MILLISECONDS;
424	>	assertSame(x, serialClone(x));
425		}
426
427		}

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