const expect = require('expect'); const unzipWith = require('./unzipWith.js'); test('Testing unzipWith', () => { //For more information on all the methods supported by tape //Please go to https://github.com/substack/tape expect(typeof unzipWith === 'function').toBeTruthy(); expect( unzipWith([[1, 10, 100], [2, 20, 200]], (...args) => args.reduce((acc, v) => acc + v, 0)) ).toEqual([3, 30, 300]); });