import { fireEvent, render, screen, waitFor } from '@testing-library/react' import Vcard from '.' describe('Vcard', () => { beforeEach(() => { global.URL.createObjectURL = jest.fn() }) it('renders correctly', () => { const { container } = render() expect(container.firstChild).toBeInTheDocument() }) it('Button click starts download', async () => { render() const button = await screen.findByText('Add to addressbook') fireEvent.click(button) await waitFor(() => global.URL.createObjectURL) // expect(global.URL.createObjectURL).toHaveBeenCalledTimes(1) }) })