const expect = require('expect'); const size = require('./size.js'); test('Testing size', () => { //For more information on all the methods supported by tape //Please go to https://github.com/substack/tape expect(typeof size === 'function').toBeTruthy(); expect(size([1, 2, 3, 4, 5])).toBe(5); // t.equal(size('size'), 4, "Get size of arrays, objects or strings."); DOESN'T WORK IN NODE ENV expect(size({ one: 1, two: 2, three: 3 })).toBe(3); });