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