### Question:
DingTalkUtils { public static RequestConfig getProxyConfig() { HttpHost httpProxy = new HttpHost(proxy, port); return RequestConfig.custom().setProxy(httpProxy).build(); }  static String sendDingTalkMsg(String msg, String charset); static HttpPost constructHttpPost(String msg, String charset); static CloseableHttpClient getProxyClient(); static CloseableHttpClient getDefaultClient(); static RequestConfig getProxyConfig(); static String textToJsonString(String text); static final Logger logger; static final boolean isEnableDingTalk; }### Answer:
@Test public void testProxyConfig() { RequestConfig rc = DingTalkUtils.getProxyConfig(); Assert.assertEquals(rc.getProxy().getPort(), 80); Assert.assertEquals(rc.getProxy().getHostName(), "proxy.com.cn"); }