const expect = require('expect'); const forOwn = require('./forOwn.js'); test('Testing forOwn', () => { //For more information on all the methods supported by tape //Please go to https://github.com/substack/tape expect(typeof forOwn === 'function').toBeTruthy(); let output = []; forOwn({ foo: 'bar', a: 1 }, v => output.push(v)); // 'bar', 1 expect(output).toEqual(['bar', 1]); });