123456789101112131415161718192021
import { reject } from './reject'
const isOdd = n => n % 2 === 1
test('with array', () => {  expect(reject(isOdd)([ 1, 2, 3, 4 ])).toEqual([ 2, 4 ])})
test('with object', () => {  const obj = {    a : 1,    b : 2,    c : 3,    d : 4,  }  expect(reject(isOdd, obj)).toEqual({    b : 2,    d : 4,  })})