text: describe("Takeaway", () => {
      let takeaway;
  
      beforeEach(() => {
          takeaway = new Takeaway();
      });
  
      it("shows a list of dishes with prices", () => {
          expect(takeaway.displayMenu()).toEqual([["Chips", 2], 
          ["Beef Burger", 12]]);
      });
  
      it("selects a number of available dishes", () => {
          takeaway.selectDish("Chips", 3);
          takeaway.selectDish("Beef Burger", 12);
          expect(takeaway.displayOrder()).toEqual([["Chips", 3], ["Beef Burger", 12]]);
          expect(() => { takeaway.selectDish("Bangers and Mash", 2); }).toThrow(new Error ("Dish is not available!"));
      });
  
      it("checks the order total", () => {
          takeaway.selectDish("Chips", 2);
          takeaway.selectDish("Beef Burger", 2);
          expect(takeaway.orderTotal()).toEqual(28);
      });
      
  });