What's new in StoreKit testing

6:58 - Subscription option view

VStack(alignment: .leading) {
    Text(subscription.displayName)
        .font(.headline.weight(.semibold))
    Text(subscription.description)
}

11:18 - Refund view

struct RefundView: View {
    @State private var selectedTransactionID: UInt64?
    @State private var refundSheetIsPresented = false
    @Environment(\.dismiss) private var dismiss
    var body: some View {
        Button {
            refundSheetIsPresented = true
        } label: {
            Text("Request a refund")
                .bold()
                .padding(.vertical, 5)
                .frame(maxWidth: .infinity)
        }
        .buttonStyle(.borderedProminent)
        .padding([.horizontal, .bottom])
        .disabled(selectedTransactionID == nil)
        .refundRequestSheet(
            for: selectedTransactionID ?? 0,
            isPresented: $refundSheetIsPresented
        ) { result in
            if case .success(.success) = result {
                dismiss()
            }
        }
    }
}

12:33 - Refunds emit an updated value from the transaction updates sequence

for await update in Transaction.updates {
    let transaction = try update.payloadValue
  
    if let revocationDate = transaction.revocationDate,
  	   let revocationReason = transaction.revocationReason {
        print("\(transaction.productID) revoked on \(revocationDate)")
       
        switch revocationReason {
        case .developerIssue: <#Handle developer issue#>
        case .other: <#Handle other issue#>
        default: <#Handle unknown reason#>
        }
        
        <#Revoke access to the product#>
    }
    <#...#>
}

14:21 - Offer code view

struct SubscriptionPurchaseView: View {
    @State private var redeemSheetIsPresented = false
        
    var body: some View {
        Button("Redeem an offer") {
            redeemSheetIsPresented = true
        }
        .buttonStyle(.borderless)
        .frame(maxWidth: .infinity)
        .padding(.vertical)
        .offerCodeRedeemSheet(isPresented: $redeemSheetIsPresented)
    }

}

16:23 - Offer redemptions emit updated values from Transaction.updates and Product.SubscriptionInfo.Status.updates

for await verificationResult in Transaction.updates {
    guard case .verified(let transaction) = verificationResult else {
        <#Handle failed verification#>
    }
    <#Handle updated transaction#>
}

for await updatedStatus in Product.SubscriptionInfo.Status.updates {
    guard case .verified(let renewalInfo) = updatedStatus.renewalInfo else {
        <#Handle failed verification#>
    }
    <#Handle updated status#>
}

16:31 - Check the active offer on the transaction value

for await status in Product.SubscriptionInfo.Status.updates {
    let transaction = try status.transaction.payloadValue
    let renewalInfo = try status.renewalInfo.payloadValue
    
    if let currentOfferType = transaction.offerType {
        switch currentType {
        case .introductory: <#Handle introductory offer#>
        case .promotional:  <#Handle promotional offer#>
        case .code:         <#Handle offer for codes#>
        default:            <#Handle unknown offer type#>
        }
        self.hasCurrentOffer = true
    }

    <#...#>

}

16:49 - Check the next pending offer on the renewal info value

for await status in Product.SubscriptionInfo.Status.updates {
    let transaction = try status.transaction.payloadValue
    let renewalInfo = try status.renewalInfo.payloadValue
    
    <#Check active current offer#>
    
    if let nextOfferType = renewalInfo.offerType {
        switch currentType {
        case .introductory: <#Handle introductory offer#>
        case .promotional: <#Handle promotional offer#>
        case .code:
            print("Customer has \(renewalInfo.offerID) queued")
            <#Handle offer for codes#>
        default: <#Handle unknown offer type#>
        }
        self.hasQueuedOffer = true
    }
    <#...#>
}

18:45 - Messages updates loop

private var pendingMessages: [Message] = []

private func updatesLoop() {
    for await message in Message.messages {
      if <#Check if sensitive view is presented#>,
         let display: DisplayMessageAction = <#Get display message action#> {
           try? display(message)
      }
      else {
        pendingMessages.append(message)
      }
    }
}

20:53 - Price increase changes emit an updated value from the status updates sequence

for await status in Product.SubscriptionInfo.Status.updates {
    let renewalInfo = try status.renewalInfo.payloadValue

    if renewalInfo.priceIncreaseStatus == .agreed {
        print("Customer consented to price increase")
        <#Handle consented to price increase#>
    }
    if renewalInfo.expirationReason == .didNotConsentToPriceIncrease {
        print("Customer did not consent to price increase")
        <#Handle expired due to not consenting to price increase#>
    }

    <#...#>

}

21:19 - Unit testing price increases

let session: SKTestSession = try SKTestSession(configurationFileNamed: "<#Configuration name#>")
session.disableDialogs = true

<#Purchase a subscription#>

var transaction: SKTestTransaction! = session.allTransactions().first
session.requestPriceIncreaseConsentForTransaction(identifier: transaction.identifier)

transaction = session.allTransactions().first
XCTAssertTrue(transaction.isPendingPriceIncreaseConsent)

<#Assert app updates for pending price increase#>

// Write a test case for consenting and cancelling due to price increase:

session.consentToPriceIncreaseForTransaction(identifier: transaction.identifier)

// OR

session.declinePriceIncreaseForTransaction(identifier: transaction.identifier)
session.expireSubscription(productIdentifier: "<#Product ID#>")

<#Assert app updates for finished price increase#>

24:57 - Billing retry and grace period status changes emit an updated value from the status updates sequence

for await status in Product.SubscriptionInfo.Status.updates {
    let renewalInfo = try status.renewalInfo.payloadValue

    if let gracePeriodExpirationDate = renewalInfo.gracePeriodExpirationDate,
       gracePeriodExpirationDate < .now {
        print("In grace period until \(gracePeriodExpirationDate)”)
        <#Allow access to subscription#>
    }
    else if renewalInfo.isInBillingRetry {
        <#Handle billing retry#>
    }

    <#...#>

}

25:27 - Using the state property of a status value to check for billing retry states

struct SubscriptionStatusView: View {
    let currentSubscription: Product
    let status: Product.SubscriptionInfo.Status
    @Environment(\.openURL) var openURL
    var body: some View {
        Section("Your Subscription") {
            <#...#>
            if status.state == .inBillingRetryPeriod || status.state == .inGracePeriod {
                VStack {
                    Text("""
                    There was a problem renewing your subscription. Open the App Store to
                    update your payment information.
                    """)
                    Button("Open the App Store") {
                        openURL(URL(string: "https://apps.apple.com/account/billing")!)
                    }
                }
            }
        }
    }
}

25:41 - Current entitlement APIs will account for grace period

for await entitlement in Transaction.currentEntitlements {
    <#Grant access to product#>
}

25:50 - Unit testing billing retry and grace period

let session: SKTestSession = try SKTestSession(configurationFileNamed: "<#Configuration name#>")
session.billingGracePeriodIsEnabled = true
session.shouldEnterBillingRetryOnRenewal = true

<#Purchase a subscription#>

wait(for: [<#XCTExpectation#>], timeout: 60)

let transaction: SKTestTransaction! = session.allTransactions().first
XCTAssertTrue(transaction.hasPurchaseIssue)

<#Assert app still allows access to subscription due to grace period#>

wait(for: [<#XCTExpectation#>], timeout: 60)

<#Assert app detects billing retry and no longer allows access to subscription#>

session.resolveIssueForTransaction(identifier: transaction.identifier)

<#Assert app allows access to subscription#>