swift-testing

Migrating from XCTest to Swift Testing requires replacing XCTestCase with @Suite structures, mapping test methods to @Test functions, adopting #expect and #require assertions, and applying referenced guidance for organizing files and updating async behavior.

Structuring async tests in Swift Testing uses the @Test attribute with async closures directly, applying Arrange-Act-Assert patterns and F.I.R.S.T. principles to validate asynchronous behavior without needing XCTest expectations or waiters.

Parameterized tests in Swift Testing work by passing arguments directly into the @Test macro, allowing the same test logic to run across multiple inputs, replacing XCTest data-driven loops and supporting fixture-driven scenarios.

Yes, Swift Testing supports snapshot testing for SwiftUI views by applying dump snapshot patterns and fixture strategies, integrating within the @Test structure to capture and compare UI states without XCTest dependencies.

Use test doubles in Swift Testing when isolating dependencies in unit or integration tests, choosing the right fixture or double strategy based on the specific scenario requirements and F.I.R.S.T. testing principles.

Yes, you can organize test suites in Swift Testing without XCTest by using @Suite structures to group related @Test functions, applying modern patterns for file organization, fixture management, and Arrange-Act-Assert structuring.