Swift Testing is an open-source testing framework designed for Swift. Apple introduced it at WWDC24 and shipped it with Xcode 16. Swift Testing uses m

Migrating XCTest to Swift Testing

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2024-12-09 22:00:54

Swift Testing is an open-source testing framework designed for Swift. Apple introduced it at WWDC24 and shipped it with Xcode 16. Swift Testing uses modern features like concurrency and macros. It supports Windows and Linux as well as Apple’s platofrms.

No. The XCTest framework is not deprecated, There’s no urgent reason to migrate your tests unless you want to. You cannot migrate UI Automation tests or performance (XCTMetric) tests as they are not supported by Swift Testing.

I’m finding that I prefer writing tests with Swift Testing over XCTest (see below for some of the reasons). I started adding new tests with Swift Testing to XCTest unit test source files but at a certain point I want to migrate all the tests in a source file to Swift Testing. These are my notes on that process.

You can mix XCTest and Swift Testing unit tests in a test target. You can even mix both types of test in the same source file. That make it possible to add new tests with Swift Testing and migrate your XCTests over time.