spy on a component but also keep its implementation

🙏.spec.js

// for when you REALLY need to test the props SomeComponent is rendered with (not recommended)

// create a mock that re-implements the default behaviour
// but allows us to spy on the props
jest.mock('components/SomeComponent', () => {
  const original = jest.requireActual('components/SomeComponent')

  return jest.fn(original.default)
})

it('does the thing', () => {
  render(<ThingThatRendersSomeComponent />)

  expect(SomeComponent).toHaveBeenLastCalledWith(
    // props
    expect.objectContaining({ some: 'propValue' }),
    // context
    expect.anything()
  )
})