---
title: "init(_:named:sourceLocation:)"
framework: testing
role: symbol
role_heading: Initializer
path: "testing/attachment/init(_:named:sourcelocation:)"
---

# init(_:named:sourceLocation:)

Initialize an instance of this type that encloses the given attachable value.

## Declaration

```swift
init(_ attachableValue: consuming AttachableValue, named preferredName: String? = nil, sourceLocation: SourceLocation = #_sourceLocation)
```

## Parameters

- `attachableValue`: The value that will be attached to the output of the test run.
- `preferredName`: The preferred name of the attachment to use when saving it. If nil, the testing library attempts to generate a reasonable filename for the attached value.
- `sourceLocation`: The source location of the call to this initializer. This value is used when recording issues associated with the attachment.