My app uses the window object to inject environmental variables at runtime for docker, however my tests are coming back with the error below:

url config:

declare const window: Window &
    typeof globalThis & {
        _env_: any
    }

export const url = window._env_.REACT_APP_API_URL;
export const baseUrl = url;

error in tests as the handlers use the baseUrl, but even if I change the handlers to hardcoded values the below error comes:

● Test suite failed to run TypeError: Cannot read properties of undefined (reading 'REACT_APP_API_URL')

      4 |     }
      5 |
    > 6 | export const url = window._env_.REACT_APP_API_URL;
        |                                 ^
      7 | export const baseUrl = url;

setupTests.tsx

// jest-dom adds custom jest matchers for asserting on DOM nodes.
// allows you to do things like:
// expect(element).toHaveTextContent(/react/i)
// learn more: https://github.com/testing-library/jest-dom
import '@testing-library/jest-dom';
import { setLogger } from 'react-query'
import { server } from './mocks/server'

declare const window: Window &
typeof globalThis & {
    _env_: any
}

window._env_.REACT_APP_API_URL = "https://wwww.xxxxx.com"

beforeAll(() => server.listen())
// Reset any request handlers that we may add during the tests,
// so they don't affect other tests.

afterEach(() => server.resetHandlers())

// Clean up after the tests are finished.
afterAll(() => server.close())

// silence react-query errors
setLogger({
    log: console.log,
    warn: console.warn,
    error: () => {},
})

Any idea's? So where ever there is an api call I get this error in the tests for jest/React.