What is Swift Testing?
Generated on 8/7/2024
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Swift Testing is a modern, open-source testing framework designed specifically for Swift. It was introduced to provide a more expressive and powerful way to write tests for Swift code. Here are some key features and details about Swift Testing:
- Expressive APIs: Swift Testing includes expressive APIs that make it simple to write tests. You can use macros like
expectto evaluate the result of any Swift expression, making it easy to write complex checks. - Cross-Platform: It is cross-platform, supporting all Apple operating systems that support Swift concurrency, as well as Linux and Windows. This ensures consistent behavior of tests across different platforms.
- Open Source: Swift Testing is developed as an open-source package and is hosted on GitHub. It has an open feature proposal process, allowing the community to contribute to its evolution.
- Integration with Tools: It is integrated into major tools and IDEs in the Swift ecosystem, including Swift Package Manager, Xcode 16, and Visual Studio Code with the Swift extension.
- Parameterized Tests: You can easily parameterize tests to reuse the same logic over a sequence of values, which helps in reducing code duplication.
- Tagging System: Swift Testing includes a flexible tagging system to help organize and selectively run tests across your test suite.
- Concurrency: It takes full advantage of Swift's concurrency features, running tests safely in parallel to reduce the time it takes to run your tests.
For more detailed information, you can refer to the sessions from WWDC 2024:
- Meet Swift Testing (Introduction)
- Go further with Swift Testing (Introduction)
- Platforms State of the Union (Swift Testing)
These sessions cover the building blocks, common workflows, and advanced features of Swift Testing.
Meet Swift Testing
Introducing Swift Testing: a new package for testing your code using Swift. Explore the building blocks of its powerful new API, discover how it can be applied in common testing workflows, and learn how it relates to XCTest and open source Swift.
What’s new in Swift
Join us for an update on Swift. We’ll briefly go through a history of Swift over the past decade, and show you how the community has grown through workgroups, expanded the package ecosystem, and increased platform support. We’ll introduce you to a new language mode that achieves data-race safety by default, and a language subset that lets you run Swift on highly constrained systems. We’ll also explore some language updates including noncopyable types, typed throws, and improved C++ interoperability.
Platforms State of the Union
Discover the newest advancements on Apple platforms.
Go further with Swift Testing
Learn how to write a sweet set of (test) suites using Swift Testing’s baked-in features. Discover how to take the building blocks further and use them to help expand tests to cover more scenarios, organize your tests across different suites, and optimize your tests to run in parallel.