const expect = require('expect'); const ary = require('./ary.js'); test('Testing ary', () => { //For more information on all the methods supported by tape //Please go to https://github.com/substack/tape expect(typeof ary === 'function').toBeTruthy(); const firstTwoMax = ary(Math.max, 2); expect([[2, 6, 'a'], [8, 4, 6], [10]].map(x => firstTwoMax(...x))).toEqual([6, 8, 10]); });