import { expect, it } from 'vitest'
import { getDiffDateInHours } from './getDiffDateInHours'

it('should return a difference between dates in hours.', () => {
  const input1 = new Date('December 17, 1995 03:24:00')
  const input2 = new Date('December 18, 1995 03:24:00')

  const result = getDiffDateInHours(input1, input2)

  expect(result).toBe(24)
})

it('should throw an error if non-date value is provided', () => {
  const input1 = null
  const input2 = new Date('December 18, 1995 03:24:00')

  const getDiffFn = () => getDiffDateInHours(input1, input2)

  expect(getDiffFn).toThrow()
})

it('should throw an error if no value is passed into the function', () => {
  const resultFn = () => {
    getDiffDateInHours()
  }

  expect(resultFn).toThrow()
})