# provideScope(for:testCase:performing:) Runs the evaluation and makes its result available to the test body through an evaluation context. ``` nonisolated(nonsending) func provideScope(for test: Test, testCase: Test.Case?, performing function: @Sendable () async throws -> Void) async throws ``` ## Parameters `test` The test to which this trait is attached. `testCase` The specific test case being run, or `nil` when running the whole test. `function` The test body closure to invoke after the evaluation completes. ## Discussion The Swift Testing framework calls this method automatically when you attach the trait to a test. The evaluation runs first, the framework stores its result in [`EvaluationContext`](/documentation/Evaluations/EvaluationContext), and then the test body executes inside that context. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)