How to check if you are using Karma?

Question

How can I check if I'm running my script on Karma?

When I'm on Karma, I tried with this:

var path = '';  if (typeof window.karma !== 'undefined') {   path += 'base/'; }   alert(typeof window.karma); // undefined 

I also tried with this:

var path = '';  if (typeof window.__karma__ !== 'undefined') {   path += 'base/'; }   alert(typeof window.__karma__); // still undefined 

Any ideas?

Answer 1

It should work if you use it this way

var path = '';  if ((<any>window).__karma__ !== undefined) {     path += 'base/'; }   alert(typeof window.__karma__); // still undefined 

Answer 2

Karma has configurations which allows to include any lib files, so there you can include your own test specific JS.

In your case it could be a simple flag injected in the global context and used later in some certain test.

https://karma-runner.github.io/6.3/config/files.html