Add validateSslCertificate to node client

lib/rest/Twilio.js

@@ -226,6 +226,25 @@ Twilio.prototype.request = function request(opts) {
   });
 };
 
+/* jshint ignore:start */
+/**
+ * Validate that a request to the new SSL certificate is successful.
+ * @throws {RestException} if the request fails
+ */
+/* jshint ignore:end */
+Twilio.prototype.validateSslCert = function validateSslCert() {
+  return this.httpClient.request({
+       method: 'GET',
+       uri: 'https://api.twilio.com:8443/2010-04-01/.json',
+   }).then((response) => {
+     if (response.statusCode < 200 || response.statusCode >= 300) {
+       throw RestException(response);
+     }
+
+     return response;
+  });
+};
+
 Object.defineProperty(Twilio.prototype,
   'accounts', {
   get: function() {

spec/integration/rest/Twilio.spec.js

@@ -0,0 +1,44 @@
+'use strict';
+var proxyquire = require('proxyquire');
+var _ = require('lodash');  /* jshint ignore:line */
+var Holodeck = require('../holodeck');  /* jshint ignore:line */
+var Response = require(
+    '../../../lib/http/response');  /* jshint ignore:line */
+var RestException = require(
+    '../../../lib/base/RestException');  /* jshint ignore:line */
+var Twilio = require('../../../lib');  /* jshint ignore:line */
+
+var client;
+var holodeck;
+
+describe('validateSslCert', function() {
+    beforeEach(function() {
+        holodeck = new Holodeck();
+        client = new Twilio('ACXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX', 'AUTHTOKEN', {
+            httpClient: holodeck,
+          });
+      });
+
+    it('Should successfully validate a working SSL certificate', function() {
+        holodeck.mock(new Response(200, ''));
+
+        let resp = client.validateSslCert();
+
+        resp.finally(() => {
+            expect(resp.isFulfilled()).toBe(true);
+            done();
+
+        });
+    });
+
+    it('should fail to validate a broken SSL certificate', function(done) {
+        holodeck.mock(new Response(504, ''));
+
+        let resp = client.validateSslCert();
+
+        resp.finally(() => {
+            expect(resp.isRejected()).toBe(true);
+            done();
+        });
+    });
+  });