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/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.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()); |
17 |
} |
18 |
|
19 |
public static Test suite() { |
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 < 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 < 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 |
NANOSECONDS.convert(Long.MAX_VALUE / 2, SECONDS)); |
260 |
assertEquals(Long.MIN_VALUE, |
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 |
MILLISECONDS.toNanos(Long.MAX_VALUE / 2)); |
283 |
assertEquals(Long.MIN_VALUE, |
284 |
MILLISECONDS.toNanos(-Long.MAX_VALUE / 3)); |
285 |
} |
286 |
|
287 |
/** |
288 |
* toString returns name of unit |
289 |
*/ |
290 |
public void testToString() { |
291 |
assertEquals("SECONDS", SECONDS.toString()); |
292 |
} |
293 |
|
294 |
/** |
295 |
* name returns name of unit |
296 |
*/ |
297 |
public void testName() { |
298 |
assertEquals("SECONDS", SECONDS.name()); |
299 |
} |
300 |
|
301 |
/** |
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 |
|
320 |
/** |
321 |
* timedWait throws InterruptedException when interrupted |
322 |
*/ |
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 |
|
355 |
/** |
356 |
* timedJoin throws InterruptedException when interrupted |
357 |
*/ |
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 |
/** |
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 |
/** |
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 |
} |