> ## Documentation Index
> Fetch the complete documentation index at: https://cdktn.io/docs/llms.txt
> Use this file to discover all available pages before exploring further.
# CSharp: Testing
> CDKTN Core API Reference for Testing in CSharp.
Testing utilities for cdktf applications.
## Initializers
```csharp theme={null}
using Io.Cdktn;
new Testing();
```
| **Name** | **Type** | **Description** |
| -------- | -------- | --------------- |
***
## Static Functions
| **Name** | **Description** |
| ------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------- |
| App | Returns an app for testing with the following properties: - Output directory is a temp dir. |
| EnableFutureFlags | *No description.* |
| FakeCdktfJsonPath | *No description.* |
| FullSynth | *No description.* |
| RenderConstructTree | *No description.* |
| SetupJest | *No description.* |
| StubVersion | *No description.* |
| Synth | Returns the Terraform synthesized JSON. |
| SynthHcl | Returns the Terraform synthesized JSON. |
| SynthScope | *No description.* |
| ToBeValidTerraform | *No description.* |
| ToHaveDataSource | *No description.* |
| ToHaveDataSourceWithProperties | *No description.* |
| ToHaveProvider | *No description.* |
| ToHaveProviderWithProperties | *No description.* |
| ToHaveResource | *No description.* |
| ToHaveResourceWithProperties | *No description.* |
***
### `App`
```csharp theme={null}
using Io.Cdktn;
Testing.App(TestingAppConfig Options = null);
```
Returns an app for testing with the following properties: - Output directory is a temp dir.
#### `Options`Optional
* *Type:* TestingAppConfig
***
### `EnableFutureFlags`
```csharp theme={null}
using Io.Cdktn;
Testing.EnableFutureFlags(App App);
```
#### `App`Required
* *Type:* App
***
### `FakeCdktfJsonPath`
```csharp theme={null}
using Io.Cdktn;
Testing.FakeCdktfJsonPath(App App);
```
#### `App`Required
* *Type:* App
***
### `FullSynth`
```csharp theme={null}
using Io.Cdktn;
Testing.FullSynth(TerraformStack Stack);
```
#### `Stack`Required
* *Type:* TerraformStack
***
### `RenderConstructTree`
```csharp theme={null}
using Io.Cdktn;
Testing.RenderConstructTree(IConstruct Construct);
```
#### `Construct`Required
* *Type:* Constructs.IConstruct
***
### `SetupJest`
```csharp theme={null}
using Io.Cdktn;
Testing.SetupJest();
```
### `StubVersion`
```csharp theme={null}
using Io.Cdktn;
Testing.StubVersion(App App);
```
#### `App`Required
* *Type:* App
***
### `Synth`
```csharp theme={null}
using Io.Cdktn;
Testing.Synth(TerraformStack Stack, bool RunValidations = null);
```
Returns the Terraform synthesized JSON.
#### `Stack`Required
* *Type:* TerraformStack
***
#### `RunValidations`Optional
* *Type:* bool
***
### `SynthHcl`
```csharp theme={null}
using Io.Cdktn;
Testing.SynthHcl(TerraformStack Stack, bool RunValidations = null, bool ReturnMetadata = null);
```
Returns the Terraform synthesized JSON.
#### `Stack`Required
* *Type:* TerraformStack
***
#### `RunValidations`Optional
* *Type:* bool
***
#### `ReturnMetadata`Optional
* *Type:* bool
***
### `SynthScope`
```csharp theme={null}
using Io.Cdktn;
Testing.SynthScope(IScopeCallback Fn);
```
#### `Fn`Required
* *Type:* IScopeCallback
***
### `ToBeValidTerraform`
```csharp theme={null}
using Io.Cdktn;
Testing.ToBeValidTerraform(string Received);
```
#### `Received`Required
* *Type:* string
***
### `ToHaveDataSource`
```csharp theme={null}
using Io.Cdktn;
Testing.ToHaveDataSource(string Received, string ResourceType);
```
#### `Received`Required
* *Type:* string
***
#### `ResourceType`Required
* *Type:* string
***
### `ToHaveDataSourceWithProperties`
```csharp theme={null}
using Io.Cdktn;
Testing.ToHaveDataSourceWithProperties(string Received, string ResourceType, System.Collections.Generic.IDictionary Properties = null);
```
#### `Received`Required
* *Type:* string
***
#### `ResourceType`Required
* *Type:* string
***
#### `Properties`Optional
* *Type:* System.Collections.Generic.IDictionary\< string, object >
***
### `ToHaveProvider`
```csharp theme={null}
using Io.Cdktn;
Testing.ToHaveProvider(string Received, string ResourceType);
```
#### `Received`Required
* *Type:* string
***
#### `ResourceType`Required
* *Type:* string
***
### `ToHaveProviderWithProperties`
```csharp theme={null}
using Io.Cdktn;
Testing.ToHaveProviderWithProperties(string Received, string ResourceType, System.Collections.Generic.IDictionary Properties = null);
```
#### `Received`Required
* *Type:* string
***
#### `ResourceType`Required
* *Type:* string
***
#### `Properties`Optional
* *Type:* System.Collections.Generic.IDictionary\< string, object >
***
### `ToHaveResource`
```csharp theme={null}
using Io.Cdktn;
Testing.ToHaveResource(string Received, string ResourceType);
```
#### `Received`Required
* *Type:* string
***
#### `ResourceType`Required
* *Type:* string
***
### `ToHaveResourceWithProperties`
```csharp theme={null}
using Io.Cdktn;
Testing.ToHaveResourceWithProperties(string Received, string ResourceType, System.Collections.Generic.IDictionary Properties = null);
```
#### `Received`Required
* *Type:* string
***
#### `ResourceType`Required
* *Type:* string
***
#### `Properties`Optional
* *Type:* System.Collections.Generic.IDictionary\< string, object >
***