ex-01: delegate hasTalkback to PremiumBookingDelegate at PremiumBooking

Author: kaiosilveira

src/example-01/bookings/premium/index.js

@@ -7,7 +7,7 @@ export class PremiumBooking extends Booking {
   }
 
   get hasTalkback() {
-    return this._show.hasOwnProperty('talkback');
+    return this._premiumDelegate.hasTalkback;
   }
 
   get basePrice() {

src/example-01/bookings/premium/index.test.js

@@ -7,6 +7,7 @@ describe('PremiumBooking', () => {
   describe('talkback', () => {
     it('should offer talkback', () => {
       const booking = new PremiumBooking({ talkback: true }, saturdayDecFourteenth);
+      booking._bePremium();
       expect(booking.hasTalkback).toBe(true);
     });
   });