Create a new router for the robot

index.js

@@ -31,7 +31,10 @@ module.exports = (options = {}) => {
     debug: process.env.LOG_LEVEL === 'trace'
   });
   const server = createServer(webhook);
-  const robot = createRobot({app, cache, logger, router: server, catchErrors: true});
+  const robot = createRobot({app, cache, logger, catchErrors: true});
+
+  // Connect the router from the robot to the server
+  server.use(robot.router);
 
   // Forward webhooks to robot
   webhook.on('*', event => {

lib/robot.js

@@ -1,6 +1,7 @@
 const {EventEmitter} = require('promise-events');
 const GitHubApi = require('github');
 const Bottleneck = require('bottleneck');
+const express = require('express');
 const Context = require('./context');
 
 /**
@@ -13,7 +14,7 @@ class Robot {
     this.events = new EventEmitter();
     this.app = app;
     this.cache = cache;
-    this.router = router;
+    this.router = router || new express.Router();
     this.log = wrapLogger(logger);
     this.catchErrors = catchErrors;
   }

test/index.js

@@ -23,4 +23,16 @@ describe('Probot', () => {
       expect(probot.robot.receive).toHaveBeenCalledWith(event);
     });
   });
+
+  describe('server', () => {
+    const request = require('supertest');
+
+    it('adds routes from plugins', () => {
+      probot.load(robot => {
+        robot.router.get('/foo', (req, res) => res.end('bar'));
+      });
+
+      return request(probot.server).get('/foo').expect(200, 'bar');
+    });
+  });
 });