Debugging mocha chai unit tests in IDEA 12.1.4

Hi,

Yes, it's possible to debug mocha chai unit test is IDEA 12.1.4:
It can be accomplished in the same way as debugging any other Node application.
This tutorial contains detailed instructions:
http://www.dzone.com/links/r/debugging_mocha_unit_tests_with_webstorm_step_by.html

IDEA 13 with installed NodeJS plugin supports mocha out-of-the-box: https://www.youtube.com/watch?v=4mKiGkokyx8

Hope it will help.

Can you debug chai without having mocha in webstorm?

Yes, if you can debug it with general Node.js run configuration.

Thanks but I am getting this error 'describe is undefined'



for this code

 
var chai = require('chai');
var expect = chai.expect;
var foo = require("../foo");

describe('foo', function () {
  

I guess your original problem is not with debugging, but with running.
If you're running tests in Node.js environment, then, "describe" is usually provided by mocha (http://mochajs.org) or jasmine (https://github.com/jasmine/jasmine-npm). Here "chai" won't help, as it is an assertion library, not testing framework.