30-seconds-of-code/test/fibonacciCountUntilNum/fibonacciCountUntilNum.test.js

const expect = require('expect');
const fibonacciCountUntilNum = require('./fibonacciCountUntilNum.js');

test('fibonacciCountUntilNum is a Function', () => {
  expect(fibonacciCountUntilNum).toBeInstanceOf(Function);
});