public void testDelayedWorks() throws InterruptedException {
final AppScheduledExecutorService service = new AppScheduledExecutorService(getName());
final List<LogInfo> log = Collections.synchronizedList(new ArrayList<>());
assertFalse(service.isShutdown());
assertFalse(service.isTerminated());
service.invokeAll(
Collections.nCopies(
service.getBackendPoolCorePoolSize() + 1,
Executors.callable(EmptyRunnable.getInstance()))); // pre-start all threads
int delay = 1000;
long start = System.currentTimeMillis();
ScheduledFuture<?> f1 =
service.schedule(
() -> {
log.add(new LogInfo(1));
TimeoutUtil.sleep(10);
},
delay,
TimeUnit.MILLISECONDS);
assertFalse(service.isShutdown());
assertFalse(service.isTerminated());
ScheduledFuture<?> f2 =
service.schedule(
() -> {
log.add(new LogInfo(2));
TimeoutUtil.sleep(10);
},
delay,
TimeUnit.MILLISECONDS);
assertFalse(service.isShutdown());
assertFalse(service.isTerminated());
ScheduledFuture<?> f3 =
service.schedule(
() -> {
log.add(new LogInfo(3));
TimeoutUtil.sleep(10);
},
delay,
TimeUnit.MILLISECONDS);
assertFalse(service.isShutdown());
assertFalse(service.isTerminated());
Future<?> f4 = service.submit((Runnable) () -> log.add(new LogInfo(4)));
assertFalse(service.isShutdown());
assertFalse(service.isTerminated());
assertFalse(f1.isDone());
assertFalse(f2.isDone());
assertFalse(f3.isDone());
TimeoutUtil.sleep(delay / 2);
long elapsed = System.currentTimeMillis() - start; // can be > delay/2 on overloaded agent
assertEquals(String.valueOf(f1.isDone()), elapsed > delay, f1.isDone());
assertEquals(String.valueOf(f2.isDone()), elapsed > delay, f2.isDone());
assertEquals(String.valueOf(f3.isDone()), elapsed > delay, f3.isDone());
assertTrue(f4.isDone());
TimeoutUtil.sleep(delay / 2 + 500);
assertTrue(f1.isDone());
assertTrue(f2.isDone());
assertTrue(f3.isDone());
assertTrue(f4.isDone());
assertEquals(4, log.size());
assertEquals(4, log.get(0).runnable);
List<Thread> threads =
Arrays.asList(log.get(1).currentThread, log.get(2).currentThread, log.get(3).currentThread);
assertEquals(
threads.toString(), 3, new HashSet<>(threads).size()); // must be executed in parallel
service.shutdownAppScheduledExecutorService();
assertTrue(service.awaitTermination(10, TimeUnit.SECONDS));
}