text: //test for additions functions
  describe("add function", function () {
  
    it("should add 2 numbers,return 0", function () {
      let result;
      result = add(0, 0);
      expect(result).toBe(0);
  
    });
    
      it("should add 2 negetive numbers", function () {
      let result;
      result = add(-1, -1);
      expect(result).toBe(-2);
  
    });
      it("should add 2 numbers", function () {
      let result;
      result = add(4,5);
      expect(result).toBe(9);
  
    });
  
    it("should add all numbers entered", function () {
      let result;
      result = addAll(1, 2, 3, 4);
      expect(result).toBe(10);
  
    });
  });
  
  //test for multiplication functions
  describe("multiply function", function () {
  
    it("should multiply 2 numbers", function () {
      let result;
      result = multiply(1, 2);
      expect(result).toBe(2);
  
    });
  
    it("should multiply all numbers entered", function () {
      let result;
      result = multiplyAll(1, 2, 3, 4);
      expect(result).toBe(24);
  
    });
  
  });
  