Swift Testing is settling in as the default path, and the migration story is getting clearer: `@Test`, `#expect`, `#require`, parameterized tests, attachments, and exit tests where the platform allows them. The big win is not just fewer assertion names to remember; failure output is closer to the expression we actually wrote, which helps when CI is yelling and coffee has not kicked in yet. XCTest still has a place for UI automation and performance work, so no need for a dramatic rewrite. But for most unit tests in our codebase, the modern shape is hard to argue against.

Exhaust is a feature-rich, macro-driven testing library that works with both Swift Testing and XCTest. Its aim is to empower you to test the values you didn't think of. It is the library I've wanted to have in Swift for years, ever since I started using SwiftCheck: one that matches the ergonomics and test case reduction of Python's Hypothesis with the performance of Swift. A library where you can get started with three lines of code and scale that all the way to coverage-guided fuzzing. Exhaus...

Discover how Swift 6's @MainActor isolation impacts XCTest, with tips on handling concurrency warnings for view controller testing.

Hi folks,

Discover how Swift 6's @MainActor isolation impacts XCTest, with tips on handling concurrency warnings for view controller testing.

Currently available as a beta in Xcode 27, Swift 6.4 introduces a range of enhancements: better C interoperability, simplified OS availability check, fine-grained warning control, async support in…

Testing is how you verify your code works correctly and keeps working as you make changes. Swift provides XCTest for unit and UI testing, and Swift 5.9+ introduced the new Swift Testing framework with improved syntax and features. XCTest Basics The traditional testing framework in Swift: import XCTest class CalculatorTests: XCTestCase { var calculator: Calculator! override func setUp() { super.se...

📸 Automatic snapshots from Xcode previews. Supports UIKit/AppKit/SwiftUI on iOS/macOS/watchOS/visionOS/tvOS. Browse previews in-app with the Preview Gallery, or save them to PNGs with an XCTest - g...

Custom test assertions can make your tests easier to read and write. How can you make them in Swift? Follow this example to learn the simple steps.

Apple's Swift Testing template is better than what they give us for XCTest. Now let's improve it further with a custom file template.

YouTube video by Andrea Scuderi

Custom test assertions can make your tests easier to read and write. How can you make them in Swift? Follow this example to learn the simple steps.