Как удалить библиотеки в тесте шутки?

jest.mock('../redux/storeConfigure', () => () => ({
  getState: () => ({ auth: { token: 'TEST_TOKEN' } })
}))

import { prepareRequestHeaders } from './fetch'

describe('prepareRequestHeaders', () => {
  it('returns header with Authorization if token is set', () => {
    expect(prepareRequestHeaders()['Authorization']).toBe('Bearer TEST_TOKEN')
  })

  it('returns header without Authorization if token is not set', () => {
    ?????
  })
})

В prepareRequestHeaders импортирую ../redux/storeConfigure

Как убрать ../redux/storeConfigure с другой реализацией?

Обновлено:

/* fetch.js */
import { store } from '../app'

export const prepareRequestHeaders = () => {
  const headers = {
    Accept: 'application/json',
    'Content-Type': 'application/json'
  }

  const { token } = store.getState().auth
  if (token) {
    headers['Authorization'] = `Bearer ${token}`
  }

  return headers
}

/* app.js */

import storeConfigure from './redux/storeConfigure'

export const store = storeConfigure()

/* Directories strucutre */
- redux
  - storeConfigure.js
- api
  - fetch.js
  - api.test.js
app.js