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.util.Arrays; |
15 |
+ |
import java.util.Date; |
16 |
|
import java.util.NoSuchElementException; |
17 |
|
import java.util.PropertyPermission; |
18 |
|
import java.util.concurrent.*; |
19 |
+ |
import java.util.concurrent.atomic.AtomicBoolean; |
20 |
|
import java.util.concurrent.atomic.AtomicReference; |
21 |
|
import static java.util.concurrent.TimeUnit.MILLISECONDS; |
22 |
|
import static java.util.concurrent.TimeUnit.NANOSECONDS; |
260 |
|
return 50; |
261 |
|
} |
262 |
|
|
257 |
– |
|
263 |
|
/** |
264 |
|
* Sets delays as multiples of SHORT_DELAY. |
265 |
|
*/ |
271 |
|
} |
272 |
|
|
273 |
|
/** |
274 |
+ |
* Returns a timeout in milliseconds to be used in tests that |
275 |
+ |
* verify that operations block or time out. |
276 |
+ |
*/ |
277 |
+ |
long timeoutMillis() { |
278 |
+ |
return SHORT_DELAY_MS / 4; |
279 |
+ |
} |
280 |
+ |
|
281 |
+ |
/** |
282 |
+ |
* Returns a new Date instance representing a time delayMillis |
283 |
+ |
* milliseconds in the future. |
284 |
+ |
*/ |
285 |
+ |
Date delayedDate(long delayMillis) { |
286 |
+ |
return new Date(System.currentTimeMillis() + delayMillis); |
287 |
+ |
} |
288 |
+ |
|
289 |
+ |
/** |
290 |
|
* The first exception encountered if any threadAssertXXX method fails. |
291 |
|
*/ |
292 |
|
private final AtomicReference<Throwable> threadFailure |
307 |
|
} |
308 |
|
|
309 |
|
/** |
310 |
+ |
* Extra checks that get done for all test cases. |
311 |
+ |
* |
312 |
|
* Triggers test case failure if any thread assertions have failed, |
313 |
|
* by rethrowing, in the test harness thread, any exception recorded |
314 |
|
* earlier by threadRecordFailure. |
315 |
+ |
* |
316 |
+ |
* Triggers test case failure if interrupt status is set in the main thread. |
317 |
|
*/ |
318 |
|
public void tearDown() throws Exception { |
319 |
|
Throwable t = threadFailure.getAndSet(null); |
331 |
|
throw afe; |
332 |
|
} |
333 |
|
} |
334 |
+ |
|
335 |
+ |
if (Thread.interrupted()) |
336 |
+ |
throw new AssertionFailedError("interrupt status set in main thread"); |
337 |
|
} |
338 |
|
|
339 |
|
/** |
465 |
|
else { |
466 |
|
AssertionFailedError afe = |
467 |
|
new AssertionFailedError("unexpected exception: " + t); |
468 |
< |
t.initCause(t); |
468 |
> |
afe.initCause(t); |
469 |
|
throw afe; |
470 |
|
} |
471 |
|
} |
472 |
|
|
473 |
|
/** |
474 |
< |
* Delays, via Thread.sleep for the given millisecond delay, but |
474 |
> |
* Delays, via Thread.sleep, for the given millisecond delay, but |
475 |
|
* if the sleep is shorter than specified, may re-sleep or yield |
476 |
|
* until time elapses. |
477 |
|
*/ |
478 |
< |
public static void delay(long ms) throws InterruptedException { |
478 |
> |
static void delay(long millis) throws InterruptedException { |
479 |
|
long startTime = System.nanoTime(); |
480 |
< |
long ns = ms * 1000 * 1000; |
480 |
> |
long ns = millis * 1000 * 1000; |
481 |
|
for (;;) { |
482 |
< |
if (ms > 0L) |
483 |
< |
Thread.sleep(ms); |
482 |
> |
if (millis > 0L) |
483 |
> |
Thread.sleep(millis); |
484 |
|
else // too short to sleep |
485 |
|
Thread.yield(); |
486 |
|
long d = ns - (System.nanoTime() - startTime); |
487 |
|
if (d > 0L) |
488 |
< |
ms = d / (1000 * 1000); |
488 |
> |
millis = d / (1000 * 1000); |
489 |
|
else |
490 |
|
break; |
491 |
|
} |
494 |
|
/** |
495 |
|
* Waits out termination of a thread pool or fails doing so. |
496 |
|
*/ |
497 |
< |
public void joinPool(ExecutorService exec) { |
497 |
> |
void joinPool(ExecutorService exec) { |
498 |
|
try { |
499 |
|
exec.shutdown(); |
500 |
|
assertTrue("ExecutorService did not terminate in a timely manner", |
506 |
|
} |
507 |
|
} |
508 |
|
|
509 |
+ |
/** |
510 |
+ |
* Checks that thread does not terminate within the default |
511 |
+ |
* millisecond delay of {@code timeoutMillis()}. |
512 |
+ |
*/ |
513 |
+ |
void assertThreadStaysAlive(Thread thread) { |
514 |
+ |
assertThreadStaysAlive(thread, timeoutMillis()); |
515 |
+ |
} |
516 |
+ |
|
517 |
+ |
/** |
518 |
+ |
* Checks that thread does not terminate within the given millisecond delay. |
519 |
+ |
*/ |
520 |
+ |
void assertThreadStaysAlive(Thread thread, long millis) { |
521 |
+ |
try { |
522 |
+ |
// No need to optimize the failing case via Thread.join. |
523 |
+ |
delay(millis); |
524 |
+ |
assertTrue(thread.isAlive()); |
525 |
+ |
} catch (InterruptedException ie) { |
526 |
+ |
fail("Unexpected InterruptedException"); |
527 |
+ |
} |
528 |
+ |
} |
529 |
+ |
|
530 |
+ |
/** |
531 |
+ |
* Checks that future.get times out, with the default timeout of |
532 |
+ |
* {@code timeoutMillis()}. |
533 |
+ |
*/ |
534 |
+ |
void assertFutureTimesOut(Future future) { |
535 |
+ |
assertFutureTimesOut(future, timeoutMillis()); |
536 |
+ |
} |
537 |
+ |
|
538 |
+ |
/** |
539 |
+ |
* Checks that future.get times out, with the given millisecond timeout. |
540 |
+ |
*/ |
541 |
+ |
void assertFutureTimesOut(Future future, long timeoutMillis) { |
542 |
+ |
long startTime = System.nanoTime(); |
543 |
+ |
try { |
544 |
+ |
future.get(timeoutMillis, MILLISECONDS); |
545 |
+ |
shouldThrow(); |
546 |
+ |
} catch (TimeoutException success) { |
547 |
+ |
} catch (Exception e) { |
548 |
+ |
threadUnexpectedException(e); |
549 |
+ |
} finally { future.cancel(true); } |
550 |
+ |
assertTrue(millisElapsedSince(startTime) >= timeoutMillis); |
551 |
+ |
} |
552 |
|
|
553 |
|
/** |
554 |
|
* Fails with message "should throw exception". |
690 |
|
} |
691 |
|
|
692 |
|
/** |
693 |
< |
* Sleeps until the timeout has elapsed, or interrupted. |
623 |
< |
* Does <em>NOT</em> throw InterruptedException. |
624 |
< |
*/ |
625 |
< |
void sleepTillInterrupted(long timeoutMillis) { |
626 |
< |
try { |
627 |
< |
Thread.sleep(timeoutMillis); |
628 |
< |
} catch (InterruptedException wakeup) {} |
629 |
< |
} |
630 |
< |
|
631 |
< |
/** |
632 |
< |
* Waits up to the specified number of milliseconds for the given |
693 |
> |
* Spin-waits up to the specified number of milliseconds for the given |
694 |
|
* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING. |
695 |
|
*/ |
696 |
|
void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) { |
697 |
< |
long timeoutNanos = timeoutMillis * 1000L * 1000L; |
637 |
< |
long t0 = System.nanoTime(); |
697 |
> |
long startTime = System.nanoTime(); |
698 |
|
for (;;) { |
699 |
|
Thread.State s = thread.getState(); |
700 |
|
if (s == Thread.State.BLOCKED || |
703 |
|
return; |
704 |
|
else if (s == Thread.State.TERMINATED) |
705 |
|
fail("Unexpected thread termination"); |
706 |
< |
else if (System.nanoTime() - t0 > timeoutNanos) { |
706 |
> |
else if (millisElapsedSince(startTime) > timeoutMillis) { |
707 |
|
threadAssertTrue(thread.isAlive()); |
708 |
|
return; |
709 |
|
} |
749 |
|
} catch (InterruptedException ie) { |
750 |
|
threadUnexpectedException(ie); |
751 |
|
} finally { |
752 |
< |
if (t.isAlive()) { |
752 |
> |
if (t.getState() != Thread.State.TERMINATED) { |
753 |
|
t.interrupt(); |
754 |
|
fail("Test timed out"); |
755 |
|
} |
827 |
|
realRun(); |
828 |
|
threadShouldThrow("InterruptedException"); |
829 |
|
} catch (InterruptedException success) { |
830 |
+ |
threadAssertFalse(Thread.interrupted()); |
831 |
|
} catch (Throwable t) { |
832 |
|
threadUnexpectedException(t); |
833 |
|
} |
857 |
|
threadShouldThrow("InterruptedException"); |
858 |
|
return result; |
859 |
|
} catch (InterruptedException success) { |
860 |
+ |
threadAssertFalse(Thread.interrupted()); |
861 |
|
} catch (Throwable t) { |
862 |
|
threadUnexpectedException(t); |
863 |
|
} |
892 |
|
public Runnable awaiter(final CountDownLatch latch) { |
893 |
|
return new CheckedRunnable() { |
894 |
|
public void realRun() throws InterruptedException { |
895 |
< |
latch.await(); |
895 |
> |
await(latch); |
896 |
|
}}; |
897 |
|
} |
898 |
|
|
899 |
+ |
public void await(CountDownLatch latch) { |
900 |
+ |
try { |
901 |
+ |
assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS)); |
902 |
+ |
} catch (Throwable t) { |
903 |
+ |
threadUnexpectedException(t); |
904 |
+ |
} |
905 |
+ |
} |
906 |
+ |
|
907 |
+ |
public void await(Semaphore semaphore) { |
908 |
+ |
try { |
909 |
+ |
assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS)); |
910 |
+ |
} catch (Throwable t) { |
911 |
+ |
threadUnexpectedException(t); |
912 |
+ |
} |
913 |
+ |
} |
914 |
+ |
|
915 |
+ |
// /** |
916 |
+ |
// * Spin-waits up to LONG_DELAY_MS until flag becomes true. |
917 |
+ |
// */ |
918 |
+ |
// public void await(AtomicBoolean flag) { |
919 |
+ |
// await(flag, LONG_DELAY_MS); |
920 |
+ |
// } |
921 |
+ |
|
922 |
+ |
// /** |
923 |
+ |
// * Spin-waits up to the specified timeout until flag becomes true. |
924 |
+ |
// */ |
925 |
+ |
// public void await(AtomicBoolean flag, long timeoutMillis) { |
926 |
+ |
// long startTime = System.nanoTime(); |
927 |
+ |
// while (!flag.get()) { |
928 |
+ |
// if (millisElapsedSince(startTime) > timeoutMillis) |
929 |
+ |
// throw new AssertionFailedError("timed out"); |
930 |
+ |
// Thread.yield(); |
931 |
+ |
// } |
932 |
+ |
// } |
933 |
+ |
|
934 |
|
public static class NPETask implements Callable<String> { |
935 |
|
public String call() { throw new NullPointerException(); } |
936 |
|
} |
1133 |
|
} |
1134 |
|
|
1135 |
|
/** |
1136 |
< |
* A CyclicBarrier that fails with AssertionFailedErrors instead |
1137 |
< |
* of throwing checked exceptions. |
1136 |
> |
* A CyclicBarrier that uses timed await and fails with |
1137 |
> |
* AssertionFailedErrors instead of throwing checked exceptions. |
1138 |
|
*/ |
1139 |
|
public class CheckedBarrier extends CyclicBarrier { |
1140 |
|
public CheckedBarrier(int parties) { super(parties); } |
1141 |
|
|
1142 |
|
public int await() { |
1143 |
|
try { |
1144 |
< |
return super.await(); |
1144 |
> |
return super.await(2 * LONG_DELAY_MS, MILLISECONDS); |
1145 |
> |
} catch (TimeoutException e) { |
1146 |
> |
throw new AssertionFailedError("timed out"); |
1147 |
|
} catch (Exception e) { |
1148 |
|
AssertionFailedError afe = |
1149 |
|
new AssertionFailedError("Unexpected exception: " + e); |
1153 |
|
} |
1154 |
|
} |
1155 |
|
|
1156 |
< |
public void checkEmpty(BlockingQueue q) { |
1156 |
> |
void checkEmpty(BlockingQueue q) { |
1157 |
|
try { |
1158 |
|
assertTrue(q.isEmpty()); |
1159 |
|
assertEquals(0, q.size()); |
1180 |
|
} |
1181 |
|
} |
1182 |
|
|
1183 |
+ |
@SuppressWarnings("unchecked") |
1184 |
+ |
<T> T serialClone(T o) { |
1185 |
+ |
try { |
1186 |
+ |
ByteArrayOutputStream bos = new ByteArrayOutputStream(); |
1187 |
+ |
ObjectOutputStream oos = new ObjectOutputStream(bos); |
1188 |
+ |
oos.writeObject(o); |
1189 |
+ |
oos.flush(); |
1190 |
+ |
oos.close(); |
1191 |
+ |
ObjectInputStream ois = new ObjectInputStream |
1192 |
+ |
(new ByteArrayInputStream(bos.toByteArray())); |
1193 |
+ |
T clone = (T) ois.readObject(); |
1194 |
+ |
assertSame(o.getClass(), clone.getClass()); |
1195 |
+ |
return clone; |
1196 |
+ |
} catch (Throwable t) { |
1197 |
+ |
threadUnexpectedException(t); |
1198 |
+ |
return null; |
1199 |
+ |
} |
1200 |
+ |
} |
1201 |
|
} |