CODEWITHSUNDEEP
ecmascript-6jestjssinon
user762579
user762579

Reputation:

window.location.assign() not implemented in Jest JSDom

I have the function

 window.location.assign(url)

which does not exist in jsdom... so raising an error in my test

Someone mention the possibility to stub this function ( using Sinon) see jsdom issue

 sinon.stub(window.location, 'assign');
 expect(window.location.assign).to.have.been.calledWith(url);

How can I replicate it using Jest ? ( since it does not exist , I cannot use spies... it has to be mocked )

thanks for feedback

Upvotes: 1

Views: 4439

Answers (2)

McTrafik
McTrafik

Reputation: 2929

Object.defineProperty(window, 'location', { writable: true, value: { assign: jest.fn() } });

Promoting what @Sushil Kumar said. ^ this is the answer that works w/ jest 27, 28, 29.

Upvotes: 0

Yury Tarabanko
Yury Tarabanko

Reputation: 45121

You could provide your custom implementation

jest.spyOn(window.location, 'assign').mockImplementation(url => console.log(url))

Upvotes: 2

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