String key = "non_existent";
        crawlerStatsHelper.record(key, "test_action");

        assertNull(localLogMsg.get());
    }

    @Test
    public void test_runOnThreadOnNonExistentKey() {
        String key = "non_existent";
        crawlerStatsHelper.runOnThread(key);

        assertNull(localLogMsg.get());
    }

    @Test
    public void test_doneOnNonExistentKey() {