Add --delay option

package.json

@@ -10,6 +10,7 @@
   "dependencies": {
     "body-parser": "^1.8.1",
     "chalk": "^0.4.0",
+    "connect-pause": "^0.1.0",
     "cors": "^2.3.0",
     "errorhandler": "^1.2.0",
     "express": "^4.9.5",

src/cli/index.js

@@ -31,6 +31,10 @@ module.exports = function () {
       id: {
         description: 'Set database id property (e.g. _id)',
         default: 'id'
+      },
+      delay: {
+        alias: 'd',
+        description: 'Add delay to responses (ms)'
       }
     })
     .boolean('watch')

src/cli/run.js

@@ -3,6 +3,7 @@ var chalk = require('chalk')
 var is = require('./utils/is')
 var load = require('./utils/load')
 var watch = require('./watch')
+var pause = require('connect-pause')
 var jsonServer = require('../server')
 
 function prettyPrint (argv, object, rules) {
@@ -30,7 +31,7 @@ function prettyPrint (argv, object, rules) {
   console.log()
 }
 
-function createServer (source, object, routes) {
+function createServer (source, object, routes, delay) {
   var server = jsonServer.create()
 
   var router = jsonServer.router(
@@ -46,6 +47,10 @@ function createServer (source, object, routes) {
     server.use(rewriter)
   }
 
+  if (delay) {
+    server.use(pause(delay))
+  }
+
   server.use(router)
 
   return server
@@ -77,7 +82,8 @@ module.exports = function (argv) {
       console.log(chalk.gray('  Done'))
 
       // Create server and listen
-      server = createServer(source, data, routes).listen(argv.port, argv.host)
+      server = createServer(source, data, routes, argv.delay)
+        .listen(argv.port, argv.host)
 
       // Display server informations
       prettyPrint(argv, data, routes)

test/cli/index.js

@@ -91,6 +91,23 @@ describe('cli', function () {
 
   })
 
+  describe('db.json -d 1000', function () {
+
+    beforeEach(function (done) {
+      child = cli([dbFile, '-d', 1000])
+      setTimeout(done, 1000)
+    })
+
+    it('should delay response', function (done) {
+      var start = new Date()
+      request.get('/posts').expect(200, function (err) {
+        var end = new Date()
+        done(end - start > 1000 ? err : new Error('Request wasn\'t delayed'))
+      })
+    })
+
+  })
+
   // FIXME test fails on OS X and maybe on Windows
   // But manually updating db.json works...
   if (os.platform() === 'linux') {