text: describe('defaults', function () {
      var should = require('chai').should();
      const defaultChars = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
  
      var simpleRandom = require("../index.js");
      it('should have length of 16', function () {
          var random = simpleRandom();
          random.should.have.length(16);
      });
      it("should only use default chars", function () {
          var random = simpleRandom();
          var randomArray = random.split("");
          randomArray.forEach(function (char) {
              defaultChars.indexOf(char).should.be.above(-1);
          });
      });
  });
  