});
        } catch (final Exception e) {
            logger.warn("Failed to process a task.", e);
        }
    }

    private synchronized boolean isInterrupted() {
        if (thread != null) {
            return thread.isInterrupted();
        }
        return true;
    }

    /**
     * Returns the list of expired {@link TimeoutTask}.
     *

    assertFalse(Thread.currentThread().isInterrupted());
    assertFalse(monitor.isOccupiedByCurrentThread());

    doEnterScenarioSetUp();

    boolean interruptedBeforeCall = Thread.currentThread().isInterrupted();
    Outcome actualOutcome = doCall();
    boolean occupiedAfterCall = monitor.isOccupiedByCurrentThread();
    boolean interruptedAfterCall = Thread.currentThread().isInterrupted();

    if (occupiedAfterCall) {

      fail();
    } catch (TwoArgConstructorException expected) {
      assertThat(expected).hasCauseThat().isInstanceOf(InterruptedException.class);
      assertTrue(Thread.currentThread().isInterrupted());
    } finally {
      Thread.interrupted();
    }
  }

  public void testGetCheckedUntimed_cancelled() throws TwoArgConstructorException {
    SettableFuture<String> future = SettableFuture.create();
    future.cancel(true);

    // Run a task that expects that it is not interrupted while it is running.
    e.execute(
        new Runnable() {
          @Override
          public void run() {
            assertThat(Thread.currentThread().isInterrupted()).isFalse();
          }
        });

    // Run these together.
    fakePool.runAll();

    // Check that this thread has been marked as interrupted again now that the thread has been

    } catch (ExecutionException e) {
      throw new AssertionError(e);
    }
  }

  static void verifyThreadWasNotInterrupted() {
    assertFalse(Thread.currentThread().isInterrupted());
  }

  static void clearInterrupt() {
    Thread.interrupted();
  }

  /**
   * Retrieves the result of a {@code Future} known to be done but uses the {@code get(long,
   * TimeUnit)} overload in order to test that method.
   */

    Thread.currentThread().interrupt();
    try {
      assertEquals("foo", getUnchecked(immediateFuture("foo")));
      assertTrue(Thread.currentThread().isInterrupted());
    } finally {
      Thread.interrupted();
    }
  }

  public void testGetUnchecked_cancelled() {
    SettableFuture<String> future = SettableFuture.create();
    future.cancel(true);

    Thread.currentThread().interrupt();
    try {
      assertEquals("foo", getUnchecked(immediateFuture("foo")));
      assertTrue(Thread.currentThread().isInterrupted());
    } finally {
      Thread.interrupted();
    }
  }

  public void testGetUnchecked_cancelled() {
    SettableFuture<String> future = SettableFuture.create();
    future.cancel(true);

    AtomicBoolean terminated = new AtomicBoolean();
    // we need to keep this in a flag because t.isInterrupted() returns false after t.join()
    AtomicBoolean interrupted = new AtomicBoolean();
    // we need to use another thread because it will be interrupted and thus using
    // the current one, owned by JUnit, would make the test fail
    Thread thread =
        new Thread(

            try {
                QueryLog queryLog = queryLogReader.read();
                while (queryLog != null) {
                    if (Thread.currentThread().isInterrupted()) {
                        break;
                    }
                    queryLogs.add(queryLog);
                    queryLog = queryLogReader.read();

        CompletableFuture<Void> asyncTask = CompletableFuture.runAsync(() -> {
            byte[] contextHandle = registration.getContextHandle();

            while (!Thread.currentThread().isInterrupted() && registrations.containsKey(registrationId)
                    && registration.getState() == WitnessRegistrationState.REGISTERED) {

                try {
                    // Request async notifications from server