const expect = require('expect'); const pipeFunctions = require('./pipeFunctions.js'); test('Testing pipeFunctions', () => { //For more information on all the methods supported by tape //Please go to https://github.com/substack/tape expect(typeof pipeFunctions === 'function').toBeTruthy(); const add5 = x => x + 5; const multiply = (x, y) => x * y; const multiplyAndAdd5 = pipeFunctions(multiply, add5); expect(multiplyAndAdd5(5, 2)).toBe(15); });