const expect = require('expect'); const partition = require('./partition.js'); test('Testing partition', () => { //For more information on all the methods supported by tape //Please go to https://github.com/substack/tape expect(typeof partition === 'function').toBeTruthy(); const users = [{ user: 'barney', age: 36, active: false }, { user: 'fred', age: 40, active: true }]; expect(partition(users, o => o.active)).toEqual( [[{ 'user': 'fred', 'age': 40, 'active': true }],[{ 'user': 'barney', 'age': 36, 'active': false }]] ); });