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Is Swift Testing Available on iOS 15 / Xcode 15?

I’m planning to integrate the new Swift Testing framework into my iOS application. My minimum deployment target is iOS 15, and I wanted to know if Swift Testing is fully compatible with this version of iOS.

Specifically, I’m concerned about:

  • Any potential limitations when using Swift Testing features on iOS 15.
  • If certain features of Swift Testing (like concurrency, new assertions, or reflection) require a newer iOS version or tooling that might not be supported on iOS 15.
  • Any known issues or workarounds when using Swift Testing with this iOS version.
Solution

  • Swift Testing does not depend on the minimum deployment target, simply because tests are not deployed to users of your app.

    From the documentation, Swift Testing just requires Swift 6+ and Xcode 16+. This does mean there is a minimum OS version requirement for the machine that is running the tests. Xcode 16 is not compatible with macOS versions earlier than 14.5.