const expect = require('expect'); const formatDuration = require('./formatDuration.js'); test('Testing formatDuration', () => { //For more information on all the methods supported by tape //Please go to https://github.com/substack/tape expect(typeof formatDuration === 'function').toBeTruthy(); expect(formatDuration(1001)).toBe('1 second, 1 millisecond'); expect(formatDuration(34325055574)).toBe('397 days, 6 hours, 44 minutes, 15 seconds, 574 milliseconds'); });