How do I deal with localStorage in jest tests?

Question

I keep getting \"localStorage is not defined\" in Jest tests which makes sense but what are my options? Hitting brick walls.

Answer 1

Unfortunately, the solutions that I've found here didn't work for me.

So I was looking at Jest GitHub issues and found this thread

The most upvoted solutions were these ones:

const spy = jest.spyOn(Storage.prototype, 'setItem');

// or

Storage.prototype.getItem = jest.fn(() => 'bla');