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import { aperture } from './aperture.js'
const list = [ 1, 2, 3, 4, 5, 6, 7 ]
test('happy', () => {  expect(aperture(1, list)).toEqual([ [ 1 ], [ 2 ], [ 3 ], [ 4 ], [ 5 ], [ 6 ], [ 7 ] ])  expect(aperture(2, list)).toEqual([    [ 1, 2 ],    [ 2, 3 ],    [ 3, 4 ],    [ 4, 5 ],    [ 5, 6 ],    [ 6, 7 ],  ])  expect(aperture(3, list)).toEqual([    [ 1, 2, 3 ],    [ 2, 3, 4 ],    [ 3, 4, 5 ],    [ 4, 5, 6 ],    [ 5, 6, 7 ],  ])  expect(aperture(8, list)).toEqual([])})