if (originalValue != null) {
                System.setProperty(Constants.FESS_SEARCH_ENGINE_HTTP_ADDRESS, originalValue);
            }
        }
    }

    public void test_getSearchEngineHttpAddress_withValue() {
        String testAddress = "http://localhost:9200";
        String originalValue = System.getProperty(Constants.FESS_SEARCH_ENGINE_HTTP_ADDRESS);

        try {