harsh-harlequin

Mocking scrollToIndex with jest

Since the Virtualizer is getting compiled to a function on the build output, jest.spyOn(Virtualizer.prototype, 'scrollToIndex') will not work What would then be the best way to check that scrollToIndex is called with the correct value within a test?

1 Reply

harsh-harlequinOP•3y ago

Solution I have got right now: Define this function

export const mockedScrollToIndex = typeof jest === 'undefined'
  ? noop
  : jest.fn()

export const mockedScrollToIndex = typeof jest === 'undefined'
  ? noop
  : jest.fn()

And call it inline within the code whenever I call scrollToIndex

Gaming

Programming

Mocking scrollToIndex with jest

Did you find this page helpful?