Karma installation is too easy but before require to install Node.js because Karma runs on Node.js and is available via NPM.
Node.js is a platform built on Chrome’s JavaScript runtime for easily building fast, scalable network applications. Node.js uses an event-driven, non-blocking I/O model that makes it lightweight and efficient, perfect for data-intensive real-time applications that run across distributed devices.

Download Node.js

The version for Macintosh, Macintosh Installer node-v5.1.0.pkg (28/11/2015), it’s very simple to install.

During installation:

  1. This package will install node and npm into /usr/local/bin
  2. Node was installed at: /usr/local/bin/node
  3. NPM was installed at: /usr/local/bin/npm
  4. Make sure that /usr/local/bin is in your $PATH (echo $PATH in console)

Node.js done!

Karma can be installed in two way:

  • Global “System-Wide” Installation
  • Local Installation

I prefered the first way, Global Installation, npm install -g karma, with privilegies of administrator.

Karma done!

Karma installation site

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