Thread thread = threadFactory.newThread(monitoredRunnable);
    checkThreadPoolName(thread, 1);

    Thread defaultThread = defaultThreadFactory().newThread(monitoredRunnable);
    assertEquals(defaultThread.isDaemon(), thread.isDaemon());
    assertEquals(defaultThread.getPriority(), thread.getPriority());
    assertSame(defaultThread.getThreadGroup(), thread.getThreadGroup());

    Thread thread = threadFactory.newThread(monitoredRunnable);
    checkThreadPoolName(thread, 1);

    Thread defaultThread = defaultThreadFactory().newThread(monitoredRunnable);
    assertEquals(defaultThread.isDaemon(), thread.isDaemon());
    assertEquals(defaultThread.getPriority(), thread.getPriority());
    assertSame(defaultThread.getThreadGroup(), thread.getThreadGroup());

        final Crawler testCrawler = container.getComponent("crawler");

        assertFalse(testCrawler.isDaemon());

        testCrawler.setDaemon(true);
        assertTrue(testCrawler.isDaemon());

        testCrawler.setDaemon(false);
        assertFalse(testCrawler.isDaemon());
    }

    public void test_threadPriority() throws Exception {

        new ThreadPoolExecutor(1, 2, 3, SECONDS, new ArrayBlockingQueue<Runnable>(1));
    assertThat(application.getExitingExecutorService(executor)).isNotNull();
    assertTrue(executor.getThreadFactory().newThread(() -> {}).isDaemon());
  }

  @AndroidIncompatible // Mocking ExecutorService is forbidden there. TODO(b/218700094): Don't mock.
  public void testGetExitingExecutorService_executorDelegatesToOriginal() {

        new ThreadPoolExecutor(1, 2, 3, SECONDS, new ArrayBlockingQueue<Runnable>(1));
    assertThat(application.getExitingExecutorService(executor)).isNotNull();
    assertTrue(executor.getThreadFactory().newThread(() -> {}).isDaemon());
  }

  @AndroidIncompatible // Mocking ExecutorService is forbidden there. TODO(b/218700094): Don't mock.
  public void testGetExitingExecutorService_executorDelegatesToOriginal() {

        this.background = background;
    }

    /**
     * Checks if the crawler threads are daemon threads.
     * @return true if daemon threads, false otherwise.
     */
    public boolean isDaemon() {
        return daemon;
    }

    /**
     * Sets whether the crawler threads should be daemon threads.
     * @param daemon true to make threads daemon, false otherwise.
     */