import { _, stubA } from './utils'; describe('now', () => { it('should return the number of milliseconds that have elapsed since the Unix epoch', (done) => { const stamp = +new Date(); const actual = _.now(); expect(actual >= stamp); setTimeout(() => { expect(_.now() > actual); done(); }, 32); }); it('should work with mocked `Date.now`', () => { const now = Date.now; Date.now = stubA; const actual = _.now(); Date.now = now; expect(actual).toBe('a'); }); });