const expect = require('expect'); const maxBy = require('./maxBy.js'); test('Testing maxBy', () => { //For more information on all the methods supported by tape //Please go to https://github.com/substack/tape expect(typeof maxBy === 'function').toBeTruthy(); expect(maxBy([{ n: 4 }, { n: 2 }, { n: 8 }, { n: 6 }], o => o.n)).toBe(8); expect(maxBy([{ n: 4 }, { n: 2 }, { n: 8 }, { n: 6 }], 'n')).toBe(8); });