How to set up paymentQueue in swifty storekit to promote purchases?

Question

Swift

I’m interested in the way to promote in-app purchases in ios 11. I set up in-app purchases, everything works, but I can’t figure out how to set up the last condition for setting up promotion of purchases in the AppStore. I understand that for this the SKPaymentTransactionObserver delegate must implement a special method:

optional func paymentQueue(_ queue: SKPaymentQueue, 
     shouldAddStorePayment payment: SKPayment, 
                       for product: SKProduct) -> Bool

but how to do it right? I don’t even know how you can check the correctness of your solution without releasing a new version of the application. All purchases set up strictly according to the instructions: https://github.com/bizz84/SwiftyStoreKit

Answer 1

In the AppDelegate we write:

SwiftyStoreKit.shouldAddStorePaymentHandler = { payment, product in
            return true
        }

Answer 2

But how do you check without a release?