I'm currently trying to set up a local environment to test in-app purchases in a macOS application.
Apple's documentation at https://developer.apple.com/documentation/xcode/setting_up_storekit_testing_in_xcode states:
To create a StoreKit configuration file, launch Xcode, then choose File > New > File. In the sheet that appears, enter “storekit” in the Filter search field, select StoreKit Configuration File...
When I filter on "storekit", there is no "StoreKit Configuration File."
What am I doing wrong? Do I need to install some kind of SDK or similar in Xcode?
I use Xcode 12.0 beta (12A6159) on Catalina 10.15.5. The Storekit configuration file is found and I can create and configure it.
But the Scheme -> Run -> Option does not display a selection option to perform local testing on a macOS project, but only on IOS project.
On the apple documentation StoreKit Test framework is labelled macOS 11.0+
A comment on Apple Dev Forum indicate that this menu appears on a Big Sur configuration for a macOS project, but that Xcode stills connects to Sandbox. Not tried yet on Big Sur.