import { fireEvent, render, screen } from '@testing-library/react'; import { Footer } from './footer'; import { useEnvironment } from '@vegaprotocol/environment'; jest.mock('@vegaprotocol/environment'); describe('Footer', () => { it('renders a button to open node switcher', () => { const mockOpenNodeSwitcher = jest.fn(); const node = 'n99.somenetwork.vega.xyz'; const nodeUrl = `https://${node}`; // @ts-ignore mock env hook useEnvironment.mockImplementation(() => ({ VEGA_URL: `https://api.${node}/graphql`, setNodeSwitcherOpen: mockOpenNodeSwitcher, })); render(