Background

What is Mocha?

Mocha is a JavaScript test framework running on node.js and the browser.

Made by TJ Holowaychuk creator of Express (by far the most popular node.js web framework), Mocha is TJ's answer to the problem of testing JavaScript.

• Site: http://mochajs.org
• Code: https://github.com/mochajs/mocha

Installation

Installation with npm globally:

$ npm install mocha -g

or as a development dependency for your project:

$ npm install --save-dev mocha

More info: http://mochajs.org/#installation

First test

Create Test Directory

In your project create a new /test directory to hold your tests:

$ mkdir test

Create test.js File

create a new file ./test/test.js in your text editor

Run Test

By typing the command mocha in your terminal the mocha command line program will look for a /test directory and run any .js files it contains:

$ mocha

or you can set up a test script in package.json:

 "scripts":{
     "test": "mocha"
   }

then run tests with:

$ npm test