const test = require('tape'); const mapKeys = require('./mapKeys.js'); test('Testing mapKeys', (t) => { //For more information on all the methods supported by tape //Please go to https://github.com/substack/tape t.true(typeof mapKeys === 'function', 'mapKeys is a Function'); t.deepEqual(mapKeys({ a: 1, b: 2 }, (val, key) => key + val), { a1: 1, b2: 2 }, 'Maps keys'); //t.deepEqual(mapKeys(args..), 'Expected'); //t.equal(mapKeys(args..), 'Expected'); //t.false(mapKeys(args..), 'Expected'); //t.throws(mapKeys(args..), 'Expected'); t.end(); });