const expect = require('expect'); const forOwnRight = require('./forOwnRight.js'); test('forOwnRight is a Function', () => { expect(forOwnRight).toBeInstanceOf(Function); }); let output = []; forOwnRight({ foo: 'bar', a: 1 }, v => output.push(v)); t.deepEqual(output, [1, 'bar'], 'Iterates over an element\'s key-value pairs in reverse');