# Delegates

Moq can be used to create fake delegates. Mocks faking delegates can be configured like normal methods to [return a value](https://docs.insightarchitectures.com/unit-testing-csharp/moq/results), [execute a callback](https://docs.insightarchitectures.com/unit-testing-csharp/moq/callbacks) or [throw an exception](https://docs.insightarchitectures.com/unit-testing-csharp/moq/exceptions).

The snippets below are based on the following type

```csharp
public delegate int ParseString(string value);
```

Moq can fake explicit delegates by simply passing their type to the constructor.

```csharp
var mock = new Mock<ParseString>();
```

Alternatively, Moq supports delegates based on `Func` and `Action`.

```csharp
var mock = new Mock<Func<string, int>>();
```

It is possible to configure the delegates as if they were normal methods.

```csharp
mock.Setup(p => p(It.IsAny<string>()))
    .Returns(42);
```

Finally, Moq can generate [implicit mocks](https://docs.insightarchitectures.com/unit-testing-csharp/moq/implicit-mocks) for delegates too.

```csharp
var parser = Mock.Of<ParseString>();

var func = Mock.Of<Func<string, int>>();
```