Jest mock localStorage methods

Question

I would like to mock localStorage methods in jest for error simulation. I have localstorage getter and setter methods defined in utility.js. I would like to mock local

Answer 1

To access something that is in the global scope of your module under test, you need to use the global namespace. So to access localStorage use global.localStorage:

global.storage = {
  store:{},
  getItem: (key)=>this.store[key],
  setItem: (key, value)=> this.store[key] = value
}