dhis2/d2

import { generateQuarterlyPeriodsForYear } from '../quarterly'

describe('Quarterly period', () => {
    describe('generateQuarterlyPeriodsForYear()', () => {
        it('should not allow years before the year zero', () => {
            expect(() => generateQuarterlyPeriodsForYear(-10)).toThrowError()
        })

        it('should throw an error when passing a Date object', () => {
            expect(() =>
                generateQuarterlyPeriodsForYear(new Date())
            ).toThrowError()
        })

        it('should generate 4 periods for a year', () => {
            expect(generateQuarterlyPeriodsForYear(2017)).toHaveLength(4)
        })

        it('should generate the correct quarter periods', () => {
            expect(generateQuarterlyPeriodsForYear(2017)).toEqual([
                {
                    startDate: '2017-01-01',
                    endDate: '2017-03-31',
                    name: 'January - March 2017',
                    id: '2017Q1',
                },
                {
                    startDate: '2017-04-01',
                    endDate: '2017-06-30',
                    name: 'April - June 2017',
                    id: '2017Q2',
                },
                {
                    startDate: '2017-07-01',
                    endDate: '2017-09-30',
                    name: 'July - September 2017',
                    id: '2017Q3',
                },
                {
                    startDate: '2017-10-01',
                    endDate: '2017-12-31',
                    name: 'October - December 2017',
                    id: '2017Q4',
                },
            ])
        })

        it('should generate the same periods when called without as when called with the current year', () => {
            expect(generateQuarterlyPeriodsForYear()).toEqual(
                generateQuarterlyPeriodsForYear(new Date().getFullYear())
            )
        })
    })
})