import { Fragment } from 'react'; import { render } from '@testing-library/react'; import { ToolbarToggleGroup } from '../ToolbarToggleGroup'; import { Toolbar } from '../Toolbar'; import { ToolbarContent } from '../ToolbarContent'; describe('ToolbarToggleGroup', () => { it('should warn on bad props', () => { const myMock = jest.fn() as any; global.console = { error: myMock } as any; const items = ( test ); render( {items} ); expect(myMock).toHaveBeenCalled(); }); });