import { getMonthDays } from '../GetMonthDays' describe('Get the Days of a Month', () => { it('expects to return 28', () => { expect(getMonthDays(2, 2018)).toEqual(28) }) it('expects to return 30', () => { expect(getMonthDays(6, 254)).toEqual(30) }) it('expects to return 29', () => { expect(getMonthDays(2, 2024)).toEqual(29) }) it('expects to throw a type error', () => { expect(() => { getMonthDays(13, 2020) }).toThrow('Invalid Month Number.') }) })