import { DateHelper } from './DateHelper.mjs'

const dateToTest = new Date()
const dateInMillis = dateToTest.getTime()

test('Add Milliseconds', () => {
  const numToAdd = 2456
  const newDate = DateHelper.addMillisToDate(numToAdd, dateToTest)

  expect(newDate.getTime() - dateInMillis).toEqual(numToAdd)
})

test('Add Seconds', () => {
  const numToAdd = 2456
  const newDate = DateHelper.addSecondsToDate(numToAdd, dateToTest)

  expect(newDate.getTime() - dateInMillis).toEqual(numToAdd * 1000)
})

test('Add Minutes', () => {
  const numToAdd = 2456
  const newDate = DateHelper.addMinutesToDate(numToAdd, dateToTest)

  expect(newDate.getTime() - dateInMillis).toEqual(numToAdd * 1000 * 60)
})

test('Add Hours', () => {
  const numToAdd = 2456
  const newDate = DateHelper.addHoursToDate(numToAdd, dateToTest)

  expect(newDate.getTime() - dateInMillis).toEqual(numToAdd * 1000 * 60 * 60)
})

test('Add Days', () => {
  const numToAdd = 26
  const newDate = DateHelper.addDaysToDate(numToAdd, dateToTest)

  expect(newDate.getTime() - dateInMillis).toEqual(numToAdd * 1000 * 60 * 60 * 24)
})