whatwg-fetch mocks

mocks.js

const fetchMock = (response) => {
  window.fetch = jest.fn().mockImplementation(() =>
    new Promise((resolve) => {
      resolve({ json: () =>  response })
    })
  )
}

const fetchMockRejected = (response) => {
  window.fetch = jest.fn().mockImplementation(() =>
    Promise.reject(response)
  )
}

export {
  fetchMock,
  fetchMockRejected
}