what's new in testing?

At WWDC 2024, Apple introduced several new features and improvements in the realm of testing, particularly with the introduction of Swift Testing. Here are the key highlights:

1. Swift Testing Framework:

   • Introduction: Swift Testing is a new, open-source testing framework built specifically for Swift. It is designed to be expressive, easy to learn, and cross-platform, supporting all major platforms including Linux and Windows (Platforms State of the Union).
   • Core Features: The framework includes powerful capabilities for describing and organizing tests, providing actionable details when failures occur, and scaling elegantly to large codebases. It embraces modern Swift features like concurrency and macros (Meet Swift Testing).
   • Integration: Swift Testing is integrated into major tools and IDEs in the Swift ecosystem, including Swift Package Manager, Xcode 16, and Visual Studio Code with recent versions of the Swift extension (Meet Swift Testing).

2. Testing in Xcode 16:

   • Support for Swift Testing: Xcode 16 has full support for Swift Testing. The test navigator organizes tests by tag and shows parameterized tests. The source editor provides a rich inline presentation to help diagnose what went wrong when a test fails (Platforms State of the Union).
   • Running Tests: You can run all tests in your project or quickly iterate on individual tests using the test navigator. Tags can be used to include or exclude tests from test plans (What’s new in Xcode 16).

3. Parameterized and Tagged Tests:

   • Parameterized Tests: Swift Testing allows you to parameterize tests so they can be reused multiple times, repeating the same logic over a sequence of values (Platforms State of the Union).
   • Tagging System: A flexible tagging system helps organize tests and test plans. Tags can be used to selectively run tests across your test suite, such as tests that use a certain module or run on a specific device (Platforms State of the Union).

4. Community and Open Source:

   • Open Development: Swift Testing is developed as an open-source package and has an open feature proposal process. The community is encouraged to get involved by writing or participating in feature proposals and improving the documentation (Meet Swift Testing).

For a deeper dive into Swift Testing, you can watch the sessions Meet Swift Testing and Go further with Swift Testing.