---
title: "testAddArguments(with:completion:)"
framework: matter
role: symbol
role_heading: Instance Method
path: "matter/mtrbaseclusterunittesting/testaddarguments(with:completion:)"
---

# testAddArguments(with:completion:)

## Declaration

```swift
func testAddArguments(with params: MTRUnitTestingClusterTestAddArgumentsParams, completion: @escaping @Sendable (MTRUnitTestingClusterTestAddArgumentsResponseParams?, (any Error)?) -> Void)
```

```swift
func testAddArguments(with params: MTRUnitTestingClusterTestAddArgumentsParams) async throws -> MTRUnitTestingClusterTestAddArgumentsResponseParams
```