What are alternatives for Sinon.js (JS mocking library)?

Question

Are there any worthwhile alternatives for Sinon.js?

Thanks.

Answer 1

Testdouble.js

There is also library called testdouble.js. Which is a kind of more object-oriented than sinon.js.

Also, this article from testdouble guys explain the differences between sinon.js and testdouble.js.

Example

var td = require('testdouble');

var fetch = td.function();
td.when(fetch(42)).thenReturn('Jane User');

fetch(42); // -> 'Jane User'

Answer 2

Not quite as advanced, but you can look at Jack.