react-stripe-elements mock object so you can run the damn unit tests.

react_stripe_elements_mock.js

export const mockWindowStripe = () => {
  window.Stripe = () => ({
    createSource: jest.fn(),
    elements: () => ({
      create: () => ({
        mount: jest.fn(),
        update: jest.fn(),
        destroy: jest.fn(),
        on: jest.fn(),
      }),
    }),
    createToken: jest.fn(),
  });
};