TypeScript Jest Window Location mocking

url.test.ts

import urlBuilder from './url'

let location: Location

describe('urlBuilder', () => {
  beforeEach(() => {
    location = window.location
    jest.spyOn(window, 'location', 'get').mockRestore()
  })

  test('given path, should return valid url', () => {
    const mockedLocation = {
      ...location,
      protocol: 'https:',
      host: 'www.google.com.au'
    }
    jest.spyOn(window, 'location', 'get').mockReturnValue(mockedLocation)
    const expectedUrl = 'https://www.google.com.br/faq'
    const result = urlBuilder('/static/faq')
    expect(result).toBe(expectedUrl)
  })
})