text: const expect = require('chai').expect;
  const isOddOrEven = require('../00.isOddOrEven');
  
  describe("even or odd", () => {
      it("isString", () => {
          expect(isOddOrEven(3)).to.undefined;
      });
  
      it('isOdd', () => {
          expect(isOddOrEven('s')).to.equal('odd');
      })
  
      it('isEven', () => {
          expect(isOddOrEven('aa')).to.equal('even');
      })
  });
  
  describe("Test group #2", function () {
  
  });