assertNotNull(helper.duplicateHostList);
        assertEquals(1, helper.duplicateHostList.size());
        assertEquals("www.test.com", helper.duplicateHostList.get(0).getRegularName());
    }

    @Test
    public void test_add_withNullList() {
        DuplicateHostHelper helper = new DuplicateHostHelper();
        helper.duplicateHostList = null;

        }
    }

    /**
     * Sets the list of duplicate host rules.
     *
     * @param duplicateHostList the list of duplicate host rules to use
     */
    public void setDuplicateHostList(final List<DuplicateHost> duplicateHostList) {
        this.duplicateHostList = duplicateHostList;
    }

    /**
     * Adds a new duplicate host rule to the list.
     * Initializes the list if it doesn't exist.

    public static final String LABELS_elevate_word_list = "{labels.elevate_word_list}";

    /** The key of the message: Duplicate Host List */
    public static final String LABELS_duplicate_host_list = "{labels.duplicate_host_list}";

    /** The key of the message: Synonym Dictionary List */
    public static final String LABELS_dict_synonym_list = "{labels.dict_synonym_list}";