text: 'use strict';
  
  const insertNumBeg = require('../src/insertNumBeg');
  
  const testArr = [2, 3, 4, 5];
  
  describe('#insertNumBeg', () => {
    test('to see if number is added in beg', () => {
      const nArray = insertNumBeg(testArr, 1);
      expect(nArray).toEqual([1, 2, 3, 4, 5]);  
    });
  });
  