text: /* eslint-env jest */
  import { modification } from './modification'
  
  test('function exists', () => {
    expect(modification).toBeDefined()
  })
  
  test('modification', () => {
    expect(modification(4, 1)).toBeCloseTo(3)
  })
  
  test('modification <2', () => {
    expect(modification(4, 3)).toBeCloseTo(2)
  })
  
  test('modification negative', () => {
    expect(modification(4, 5)).toBeCloseTo(2)
  })
  