import { parse } from 'date-fns'
import { DateFormat } from '../enums'
import { isInvalidDate } from './isInvalidDate'

describe('isInvalidDate', () => {
  describe('when given a numeral date format', () => {
    it('is not invalid when given a valid numeral date', () => {
      const parsedDate = parse('02/01/2022', DateFormat.Numeral, new Date())
      expect(isInvalidDate(parsedDate)).toEqual(false)
    })

    it('is invalid when given a non-existent date', () => {
      const parsedDate = parse('13/01/2022', DateFormat.Numeral, new Date())
      expect(isInvalidDate(parsedDate)).toEqual(true)
    })

    it('is invalid when given a text formatted date', () => {
      const parsedDate = parse('May 4, 2022', DateFormat.Numeral, new Date())
      expect(isInvalidDate(parsedDate)).toEqual(true)
    })
  })

  describe('when given a text date format', () => {
    it('is not invalid when given a valid text date', () => {
      const parsedDate = parse('May 4, 2022', DateFormat.Text, new Date())
      expect(isInvalidDate(parsedDate)).toEqual(false)
    })

    it('is invalid when given a non-existent date', () => {
      const parsedDate = parse('May 40, 2022', DateFormat.Text, new Date())
      expect(isInvalidDate(parsedDate)).toEqual(true)
    })

    it('is invalid when given a numeral formatted date', () => {
      const parsedDate = parse('02/01/2022', DateFormat.Text, new Date())
      expect(isInvalidDate(parsedDate)).toEqual(true)
    })
  })
})