import { format } from './utils'; describe('format', () => { it('returns empty string for no names defined', () => { expect(format(undefined, undefined, undefined)).toEqual(''); }); it('formats just first names', () => { expect(format('Joseph', undefined, undefined)).toEqual('Joseph'); }); it('formats first and last names', () => { expect(format('Joseph', undefined, 'Publique')).toEqual('Joseph Publique'); }); it('formats first, middle and last names', () => { expect(format('Joseph', 'Quincy', 'Publique')).toEqual( 'Joseph Quincy Publique' ); }); });