import { isDateFormatYYYYMMDD } from './datetime' describe('datetime - isDateFormatYYYYMMDD', () => { test.each([ ['2024-01-01', true], ['2024-01-01T00:00:00', false], ['2024-01-01T00:00:00.000Z', false], ['2024-01-01T00:00:00.000-05:00', false], ['Sat, 01 Jan 2024 00:00:00 GMT', false], ])('dateString matching format returns true', (dateString, expected) => expect(isDateFormatYYYYMMDD(dateString)).toBe(expected) ) })