---
title: "selfTestRequest(completion:)"
framework: matter
role: symbol
role_heading: Instance Method
path: "matter/mtrbaseclustersmokecoalarm/selftestrequest(completion:)"
---

# selfTestRequest(completion:)

## Declaration

```swift
func selfTestRequest(completion: @escaping @Sendable ((any Error)?) -> Void)
```

```swift
func selfTestRequest() async throws
```