DuplicateHost testHost = new DuplicateHost();
        testHost.setRegularName("www.test.com");
        testHost.setDuplicateHostName("test.com");
        testList.add(testHost);

        helper.setDuplicateHostList(testList);

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