Add some server tests

package.json

@@ -73,6 +73,7 @@
     "promise": "7.1.1",
     "react-dev-utils": "^0.5.2",
     "style-loader": "0.13.1",
+    "supertest": "^3.0.0",
     "text-table": "^0.2.0",
     "url-loader": "0.5.7",
     "webpack": "1.14.0",

server.js

@@ -1,5 +1,6 @@
+const http = require('http')
 const throng = require('throng')
-const createServer = require('./server/createServer')
+const createApp = require('./server/createApp')
 
 const port = parseInt(process.env.PORT, 10) || 5000
 
@@ -8,7 +9,24 @@ throng({
   lifetime: Infinity,
   grace: 25000,
   start: function (id) {
-    const server = createServer()
+    const server = http.createServer(createApp())
+
+    // Heroku dynos automatically timeout after 30s. Set our
+    // own timeout here to force sockets to close before that.
+    // https://devcenter.heroku.com/articles/request-timeout
+    server.setTimeout(25000, function (socket) {
+      const message = `Timeout of 25 seconds exceeded`
+
+      socket.end([
+        `HTTP/1.1 503 Service Unavailable`,
+        `Date: ${(new Date).toGMTString()}`,
+        `Content-Type: text/plain`,
+        `Content-Length: ${Buffer.byteLength(message)}`,
+        `Connection: close`,
+        ``,
+        message
+      ].join(`\r\n`))
+    })
 
     server.listen(port, function () {
       console.log('Server #%s listening on port %s, Ctrl+C to stop', id, port)

server/createApp.js

@@ -1,6 +1,5 @@
 const fs = require('fs')
 const path = require('path')
-const http = require('http')
 const express = require('express')
 const cors = require('cors')
 const morgan = require('morgan')
@@ -52,17 +51,19 @@ function errorHandler(err, req, res, next) {
   next(err)
 }
 
-function createServer() {
+function createApp() {
   const app = express()
 
   app.disable('x-powered-by')
 
+  if (process.env.NODE_ENV !== 'test') {
     app.use(morgan(process.env.NODE_ENV === 'production'
       // Modified version of the Heroku router's log format
       // https://devcenter.heroku.com/articles/http-routing#heroku-router-log-format
       ? 'method=:method path=":url" host=:req[host] request_id=:req[x-request-id] cf_ray=:req[cf-ray] fwd=:fwd status=:status bytes=:res[content-length]'
       : 'dev'
     ))
+  }
 
   app.use(errorHandler)
   app.use(cors())
@@ -80,26 +81,7 @@ function createServer() {
     serveFile
   )
 
-  const server = http.createServer(app)
+  return app
-
-  // Heroku dynos automatically timeout after 30s. Set our
-  // own timeout here to force sockets to close before that.
-  // https://devcenter.heroku.com/articles/request-timeout
-  server.setTimeout(25000, function (socket) {
-    const message = `Timeout of 25 seconds exceeded`
-
-    socket.end([
-      `HTTP/1.1 503 Service Unavailable`,
-      `Date: ${(new Date).toGMTString()}`,
-      `Content-Type: text/plain`,
-      `Content-Length: ${Buffer.byteLength(message)}`,
-      `Connection: close`,
-      ``,
-      message
-    ].join(`\r\n`))
-  })
-
-  return server
 }
 
-module.exports = createServer
+module.exports = createApp

server/createApp.test.js

@@ -0,0 +1,32 @@
+const request = require('supertest')
+const createApp = require('./createApp')
+
+describe('The server app', function () {
+  let app
+  beforeEach(function () {
+    app = createApp()
+  })
+
+  it('rejects invalid package names', function (done) {
+    request(app).get('/_invalid/index.js').then(function (res) {
+      expect(res.statusCode).toBe(403)
+      done()
+    })
+  })
+
+  it('redirects invalid query params', function (done) {
+    request(app).get('/react?main=index&invalid').then(function (res) {
+      expect(res.statusCode).toBe(302)
+      expect(res.headers.location).toBe('/react?main=index')
+      done()
+    })
+  })
+
+  it('redirects /_meta to ?meta', function (done) {
+    request(app).get('/_meta/react?main=index').then(function (res) {
+      expect(res.statusCode).toBe(302)
+      expect(res.headers.location).toBe('/react?main=index&meta')
+      done()
+    })
+  })
+})