ApplePayStubs

What is this?

ApplePay is awesome, and like many developers we're excited to work with it. However, since Apple hasn't yet released any public versions of the iOS SDK with it enabled, we want to make it easier for developers to plan and test their Apple Pay integrations.

We've created a replacement component for PKPaymentAuthorizationViewController (the primary class involved in ApplePay transactions) for businesses interested in working with ApplePay called STPTestPaymentAuthorizationViewController. These classes appear visually similar and behave almost identically. The primary difference is that STPTestPaymentAuthorizationViewController yields test credit cards and addresses instead of accessing actual information stored on a user's iPhone. You can use it to build and test all of your UI and application logic around ApplePay, and switch it out for the real thing once ApplePay is publicly released.

Please note that this is for testing and development purposes only.

Dependencies

• Xcode 6+
• iOS 8+

ApplePayStubs also depends on the PassKit framework.

Installation

Use Cocoapods or manually add the files to your repository.

Usage

You create and use instances of STPTestPaymentAuthorizationViewController exactly the same way as with PKPaymentAuthorizationViewController.

// ViewController.m
- (void)checkoutButtonTapped {
    PKPaymentRequest *request = ...;
    UIViewController *controller;
#if DEBUG
    controller = [[STPTestPaymentAuthorizationViewController alloc] initWithPaymentRequest:request];
    controller.delegate = self;
#else
    controller = [[PKPaymentAuthorizationViewController alloc] initWithPaymentRequest:request];
    controller.delegate = self;
#endif
    [self presentViewController:controller];
}

STPTestPaymentAuthorizationViewController will trigger the same PKPaymentAuthorizationViewControllerDelegate callbacks at the appropriate time on its delegate.

- (void)paymentAuthorizationViewController:(PKPaymentAuthorizationViewController *)controller
                  didSelectShippingAddress:(ABRecordRef)address
                                completion:(void (^)(PKPaymentAuthorizationStatus status, NSArray *shippingMethods, NSArray *summaryItems))completion {
    [self fetchShippingCostsForAddress:address completion:^(NSArray *shippingMethods, NSError *error) {
        if (error) {
            completion(PKPaymentAuthorizationStatusFailure, nil, nil);
            return;
        }
        completion(PKPaymentAuthorizationStatusSuccess, shippingMethods, [self summaryItemsForShippingMethod:shippingMethods.firstObject]);
    }];
}

- (void)paymentAuthorizationViewController:(PKPaymentAuthorizationViewController *)controller
                   didSelectShippingMethod:(PKShippingMethod *)shippingMethod
                                completion:(void (^)(PKPaymentAuthorizationStatus, NSArray *summaryItems))completion {
    completion(PKPaymentAuthorizationStatusSuccess, [self summaryItemsForShippingMethod:shippingMethod]);
}

- (void)paymentAuthorizationViewControllerDidFinish:(PKPaymentAuthorizationViewController *)controller {
    [self dismissViewControllerAnimated:YES completion:nil];
}

When the user finishes selecting a card, as usual STPTestPaymentAuthorizationViewController will call paymentAuthorizationViewController:didAuthorizePayment:completion on its delegate. This usually includes a PKPayment that contains encrypted credit card data that you'd pass off to your payment processor (such as Stripe). To approximate this functionality, we attach a credit card number to the PKPayment under the stp_testCardNumber property. If you're using Stripe to handle this token, you can use our existing card APIs to turn this into a token:

- (void)paymentAuthorizationViewController:(PKPaymentAuthorizationViewController *)controller
                       didAuthorizePayment:(PKPayment *)payment
                                completion:(void (^)(PKPaymentAuthorizationStatus))completion {
    void(^tokenBlock)(STPToken *token, NSError *error) = ^void(STPToken *token, NSError *error) {
        if (error) {
            completion(PKPaymentAuthorizationStatusFailure);
        }
        else {
            [self createBackendChargeWithToken:token completion:completion];
        }
    };
#if DEBUG
    STPCard *card = [STPCard new];
    card.number = payment.stp_testCardNumber;
    card.expMonth = 12;
    card.expYear = 2020;
    card.cvc = @"123";
    [Stripe createTokenWithCard:card completion:tokenBlock];
#else
    [Stripe createTokenWithPayment:payment
                    operationQueue:[NSOperationQueue mainQueue]
                        completion:tokenBlock];
#endif
}

(Note for the above example: Stripe tokens created from Apple Pay work interchangably with those created using manually-collected credit card details).

Example App / Learn More

If you'd like to see more examples of how to use this, we use ApplePayStubs in the example app for our main iOS library.

If you'd like to learn more about accepting payments on iOS with Stripe in general, read our iOS tutorial.