# CopierTester<TValue, TCopier>.CopierTester<TValue, TCopier>(ITestOutputHelper)

[Type overview](/orleans/docs/api/csharp/microsoft.orleans.serialization.testkit/orleans.serialization.testkit.copiertester-2/) | [Constructors](/orleans/docs/api/csharp/microsoft.orleans.serialization.testkit/orleans.serialization.testkit.copiertester-2/constructors/)

[Source](https://github.com/dotnet/orleans/blob/b7a9e3e1c9c54b3cec3a467c5734bf7744541bcf/src/Orleans.Serialization.TestKit/CopierTester.cs#L28-L32)

```csharp
protected CopierTester<TValue, CopierTester(ITestOutputHelper output)
```

Initializes a new `Orleans.Serialization.TestKit.CopierTester-2` instance.

### Parameters

- `output` (`ITestOutputHelper`)