curlHelper.init();

        NodeManager nodeManager = getNodeManager(curlHelper);
        assertNotNull(nodeManager);
    }

    @Test
    public void test_init_hostsWithSpaces() {
        setupMockConfig(" localhost:9200 , localhost:9201 , localhost:9202 ", "", "");

        curlHelper.init();

        NodeManager nodeManager = getNodeManager(curlHelper);
        assertNotNull(nodeManager);

                .get(stream -> stream.map(String::trim).filter(StringUtil::isNotEmpty).toArray(n -> new String[n]));
        nodeManager = new NodeManager(hosts, node -> request(new CurlRequest(Method.GET, node.getUrl("/"))));
        nodeManager.setHeartbeatInterval(fessConfig.getFesenHeartbeatInterval());
    }

    /**
     * Creates a GET request for the specified path.
     * @param path the request path