swift-testing

To write Swift unit tests using the @Test macro, define a test function annotated with @Test and use #expect or #require for assertions. This modern Swift Testing framework enables structured test suites and expressive checks in Xcode 26+.

Yes, you can run asynchronous tests in Xcode Playgrounds using Swift Testing. The framework supports async testing natively, allowing you to validate logic in real-time with #expect and #require assertions directly within iOS 26 development projects.

In Swift Testing, #expect and #require are macro-based assertions used to write clear checks. Both support synchronous and asynchronous tests, providing expressive assertion mechanisms to validate outcomes within your structured test suites.

Yes, you need an Xcode 26+ environment to run tests using the Testing module. The Swift Testing framework with @Test macros requires Swift 6.0+ via Xcode 16+ at minimum, targeting iOS 26 development projects.

You can organize structured test suites for parallel or serialized execution in Swift by using the framework's macro-based approach. This allows you to create nested groups and maintainable test structures within your iOS 26 development environment.

Swift Testing macros like @Test fail to execute if the environment prerequisites are unmet. Running tests requires Swift 6.0+ via Xcode 16+ and an Xcode 26+ environment to properly process the Testing module assertions.