<!--
{
  "availability" : [

  ],
  "documentType" : "symbol",
  "framework" : "XCTest",
  "identifier" : "/documentation/XCTest/XCTAttachment/init(archivableObject:)",
  "metadataVersion" : "0.1.0",
  "role" : "Initializer",
  "symbol" : {
    "kind" : "Initializer",
    "modules" : [
      "XCTest"
    ],
    "preciseIdentifier" : "c:objc(cs)XCTAttachment(cm)attachmentWithArchivableObject:"
  },
  "title" : "init(archivableObject:)"
}
-->

# init(archivableObject:)

Creates an attachment from an object that conforms to `NSSecureCoding`.

```
convenience init(archivableObject object: any NSSecureCoding)
```

## Parameters

`object`

An encodable object that conforms to <doc://com.apple.documentation/documentation/Foundation/NSSecureCoding>.

## Discussion

Creates an attachment with a [`uniformTypeIdentifier`](/documentation/XCTest/XCTAttachment/uniformTypeIdentifier) of `"``public.data"`.

---

Copyright &copy; 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)