---
title: "provideScope(for:testCase:performing:)"
framework: Evaluations
role: symbol
role_heading: Instance Method
platforms: [iOS 27.0+, iPadOS 27.0+, Mac Catalyst 27.0+, macOS 27.0+, visionOS 27.0+, watchOS 27.0+, xcode 27.0+]
path: "evaluations/evaluationtrait/providescope(for:testcase:performing:)"
---

# provideScope(for:testCase:performing:)

Runs the evaluation and makes its result available to the test body through an evaluation context.

## Declaration

```swift
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

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, and then the test body executes inside that context.