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

The correct way of doing this is to use spyOn. The other answers here, even though they work, don't consider cleanup and pollute the global scope.

// beforeAll
jest
  .spyOn(window, 'navigator', 'get')
  .mockImplementation(() => { ... })

// afterAll
jest.restoreAllMocks();