Add test for custom lynx

Author: mlmorg

test/express-statsd.js

@@ -1,4 +1,5 @@
 var expect = require('chai').expect;
+var Lynx = require('lynx');
 var expressStatsd = require('../lib/express-statsd');
 var utils = require('./utils');
 
@@ -97,6 +98,26 @@ describe('An express server', function () {
         expect(this.messages[1]).to.match(/^my-key\.response_time:\d|ms$/);
       });
     });
+
+    describe('receiving a request with a custom lynx', function () {
+      utils.runServer(1337, [
+        function (req, res, next) {
+          req.statsdKey = 'my-key';
+          next();
+        },
+        expressStatsd({client: new Lynx('127.0.0.1', 8125, {scope: 'my-scope'})}),
+        function (req, res) {
+          res.send(200);
+        }
+      ]);
+      utils.saveRequest('http://localhost:1337');
+      utils.getStatsdMessages();
+
+      it('should use the custom lynx client', function () {
+        expect(this.messages[0]).to.match(/^my-scope\.my-key\.status_code\.200:\d\|c$/);
+        expect(this.messages[1]).to.match(/^my-scope\.my-key\.response_time:\d|ms$/);
+      });
+    });
   });
 
   describe('without express-statsd receiving a request', function () {