Nodejs API testing [on hold]

I am new to NodeJS environment.

I am using WebStorm as an IDE on Ubuntu and I would like to know a good testing framework for my project.

I have checked many of them like Karma-Jasmine, but it looks like it's for client side testing only. I want something for the Server Side. I tried Jasmine-Node, but not sure if it is the best one.

Please suggest a server side testing framework and if some reference documentation/videos are there, please share.