} else {
                System.clearProperty(Constants.FESS_SEARCH_ENGINE_HTTP_ADDRESS);
            }
        }
    }

    @Test
    public void test_getSearchEngineHttpAddress_withUnicodeCharacters() {
        String testAddress = "http://テスト.example.com:9200";
        String originalValue = System.getProperty(Constants.FESS_SEARCH_ENGINE_HTTP_ADDRESS);

        try {