Mock HTTP fetch in sinon

[maryam-saeidi]

I am trying to mock HTTP fetch in jsfiddle. I am not sure what I do wrong that makes the result not to be equal to the mock one.

• Sinon version : 3.2.1
• Environment : chrome (Version 62.0.3198.0 (Official Build) dev (64-bit))
• Example URL : http://jsfiddle.net/maryam_saeidi/yredb06m/7/
• Other libraries you are using:
  polyfill.js
  mocha.js
  chai.js
  mocha.css

What did you expect to happen?
I want to mock the HTTP fetch function.

What actually happens
It seems it doesn't mock the fetch function.

How to reproduce
Here is my sample code: (You can see the logs in the browser console.)
http://jsfiddle.net/maryam_saeidi/yredb06m/7/

[fatso83]

Fetch is a different API from XHR. The underlying library of the XHR stubbing, nise, only supports XHR (and so does Sinon). You can check out sinonjs/nise#7 for some tips on how to accomplish stubbing the fetch library.