Mocking globals in Jest

Question

Is there any way in Jest to mock global objects, such as navigator, or Image*? I\'ve pretty much given up on this, and left it up to a series of mo

Answer 1

If you are using react-testing-library and you use the cleanup method provided by the library, it will remove all global declarations made in that file once all tests in the file have run. This will then not carry over to any other tests run.

Example:

import { cleanup } from 'react-testing-library'

afterEach(cleanup)

global.getSelection = () => {

}

describe('test', () => {
  expect(true).toBeTruthy()
})