options.webConfigIds = "";

        List<String> result = options.getWebConfigIdList();
        assertNull(result);
    }

    public void test_Options_getFileConfigIdList_withValidIds() {
        Crawler.Options options = new Crawler.Options();
        options.fileConfigIds = "file1,file2";

        List<String> result = options.getFileConfigIdList();
        assertNotNull(result);