CODEWITHSUNDEEP
node.jsexpressmocha.js
znat
znat

Reputation: 13474

Can't run tests with Mocha on Express.js app

I am trying to setup mocha to test an ExpressJs app.

When I run tests using npm test I got the following error:

TypeError: undefined is not a function
at Object.<anonymous> (/myapp/bin/www:11:18)
at Module._compile (module.js:460:26)
at Object.Module._extensions..js (module.js:478:10)
at Module.load (module.js:355:32)
at Function.Module._load (module.js:310:12)
at Function.cls_wrapMethod (/Users/nathanzylbersztejn/git/airdesk-api/node_modules/newrelic/lib/shimmer.js:230:38)
at Module.require (module.js:365:17)
at require (module.js:384:17)
at Object.<anonymous> (/Users/nathanzylbersztejn/git/airdesk-api/controllers/session.js:13:11)
at Module._compile (module.js:460:26)
at Object.Module._extensions..js (module.js:478:10)
at Module.load (module.js:355:32)
at Function.Module._load (module.js:310:12)
at Function.cls_wrapMethod (/Users/nathanzylbersztejn/git/airdesk-api/node_modules/newrelic/lib/shimmer.js:230:38)
at Module.require (module.js:365:17)
at require (module.js:384:17)
at Object.<anonymous> (/Users/nathanzylbersztejn/git/airdesk-api/app.js:10:25)
at Module._compile (module.js:460:26)
at Object.Module._extensions..js (module.js:478:10)
at Module.load (module.js:355:32)
at Function.Module._load (module.js:310:12)
at Module.require (module.js:365:17)
at require (module.js:384:17)
at Object.<anonymous> (/Users/nathanzylbersztejn/git/airdesk-api/test/test.js:5:11)
at Module._compile (module.js:460:26)
at Object.Module._extensions..js (module.js:478:10)
at Module.load (module.js:355:32)
at Function.Module._load (module.js:310:12)
at Module.require (module.js:365:17)
at require (module.js:384:17)
at /Users/nathanzylbersztejn/git/airdesk-api/node_modules/mocha/lib/mocha.js:185:27
at Array.forEach (native)
at Mocha.loadFiles (/Users/nathanzylbersztejn/git/airdesk-api/node_modules/mocha/lib/mocha.js:182:14)
at Mocha.run (/Users/nathanzylbersztejn/git/airdesk-api/node_modules/mocha/lib/mocha.js:394:31)
at loadAndRun (/Users/nathanzylbersztejn/git/airdesk-api/node_modules/mocha/bin/_mocha:349:22)
at Object.<anonymous> (/Users/nathanzylbersztejn/git/airdesk-api/node_modules/mocha/bin/_mocha:366:3)
at Module._compile (module.js:460:26)
at Object.Module._extensions..js (module.js:478:10)
at Module.load (module.js:355:32)
at Function.Module._load (module.js:310:12)
at Function.Module.runMain (module.js:501:10)
at startup (node.js:129:16)
at node.js:814:3

Where /myapp/bin/www:11:5 refers to the following line:

var app = require('../app')
app.set('port', process.env.PORT || 3000); // <- this line 
     ^

The app works well, so it's not related to the app setup. Any idea?

Upvotes: 0

Views: 464

Answers (1)

Peter Lyons
Peter Lyons

Reputation: 146034

First guess is you have a circular dependency, which node handles by returning an empty object until the circle is finished. Do you do something like require("./bin/www"); inside app.js? If you post app.js and bin/www we should be able to confirm.

Second guess is app.js just isn't getting the commonjs exports correct.

I'm also pretty sure you should be able to test your express app with supertest loading just app.js and leaving bin/www just for when you launch a real server instance.

Upvotes: 1

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