How to stub static methods with sinon in ES6?

Question

var MyClassStub = sinon.createStubInstance(MyClass);

MyClassStub doesn't contain static methods. How to fix that?

https://stackoverflow.com/questions/21072016/stubbing-a-class-method-with-sinon-js — Anil Namde, Jul 07 '17 at 07:13

score 45 · Accepted Answer · answered Jul 23 '17 at 00:14

45

static method:

sinon.stub(YourClass, 'yourClassMethod').callsFake(() => {
  return {}
})

not static method:

sinon.stub(YourClass.prototype, 'yourClassMethod').callsFake(() => {
  return {}
})

answered Jul 23 '17 at 00:14

danday74

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score 10 · Answer 2 · edited Aug 10 '17 at 14:39

Using sinon version 3.1.0 I am able to mock (stub) private static variable using the code given below:

const YourClass = require('./lib/YourClass');
const mockStaticMethod = sinon.stub(YourClass, '_yourStaticMethod').returns('I am called');

The only thing that you have to remember that the first parameter in sinon.stub() method should be the class itself. It should not be object of that class like const yourClassObject = new YourClass();. The reason is that any object of the class won't let you access static methods.

How to stub static methods with sinon in ES6?

2 Answers2