> ## 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.
# Python: Testing
> CDKTN Core API Reference for Testing in Python.
Testing utilities for cdktf applications.
## Initializers
```python theme={null}
import cdktn
cdktn.Testing()
```
| **Name** | **Type** | **Description** |
| -------- | -------- | --------------- |
***
## Static Functions
| **Name** | **Description** |
| ----------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------- |
| app | Returns an app for testing with the following properties: - Output directory is a temp dir. |
| enable\_future\_flags | *No description.* |
| fake\_cdktf\_json\_path | *No description.* |
| full\_synth | *No description.* |
| render\_construct\_tree | *No description.* |
| setup\_jest | *No description.* |
| stub\_version | *No description.* |
| synth | Returns the Terraform synthesized JSON. |
| synth\_hcl | Returns the Terraform synthesized JSON. |
| synth\_scope | *No description.* |
| to\_be\_valid\_terraform | *No description.* |
| to\_have\_data\_source | *No description.* |
| to\_have\_data\_source\_with\_properties | *No description.* |
| to\_have\_provider | *No description.* |
| to\_have\_provider\_with\_properties | *No description.* |
| to\_have\_resource | *No description.* |
| to\_have\_resource\_with\_properties | *No description.* |
***
### `app`
```python theme={null}
import cdktn
cdktn.Testing.app(
context: typing.Mapping[typing.Any] = None,
enable_future_flags: bool = None,
fake_cdktf_json_path: bool = None,
outdir: str = None,
stack_traces: bool = None,
stub_version: bool = None
)
```
Returns an app for testing with the following properties: - Output directory is a temp dir.
#### `context`Optional
* *Type:* typing.Mapping\[typing.Any]
***
#### `enable_future_flags`Optional
* *Type:* bool
***
#### `fake_cdktf_json_path`Optional
* *Type:* bool
***
#### `outdir`Optional
* *Type:* str
***
#### `stack_traces`Optional
* *Type:* bool
***
#### `stub_version`Optional
* *Type:* bool
***
### `enable_future_flags`
```python theme={null}
import cdktn
cdktn.Testing.enable_future_flags(
app: App
)
```
#### `app`Required
* *Type:* App
***
### `fake_cdktf_json_path`
```python theme={null}
import cdktn
cdktn.Testing.fake_cdktf_json_path(
app: App
)
```
#### `app`Required
* *Type:* App
***
### `full_synth`
```python theme={null}
import cdktn
cdktn.Testing.full_synth(
stack: TerraformStack
)
```
#### `stack`Required
* *Type:* TerraformStack
***
### `render_construct_tree`
```python theme={null}
import cdktn
cdktn.Testing.render_construct_tree(
construct: IConstruct
)
```
#### `construct`Required
* *Type:* constructs.IConstruct
***
### `setup_jest`
```python theme={null}
import cdktn
cdktn.Testing.setup_jest()
```
### `stub_version`
```python theme={null}
import cdktn
cdktn.Testing.stub_version(
app: App
)
```
#### `app`Required
* *Type:* App
***
### `synth`
```python theme={null}
import cdktn
cdktn.Testing.synth(
stack: TerraformStack,
run_validations: bool = None
)
```
Returns the Terraform synthesized JSON.
#### `stack`Required
* *Type:* TerraformStack
***
#### `run_validations`Optional
* *Type:* bool
***
### `synth_hcl`
```python theme={null}
import cdktn
cdktn.Testing.synth_hcl(
stack: TerraformStack,
run_validations: bool = None,
return_metadata: bool = None
)
```
Returns the Terraform synthesized JSON.
#### `stack`Required
* *Type:* TerraformStack
***
#### `run_validations`Optional
* *Type:* bool
***
#### `return_metadata`Optional
* *Type:* bool
***
### `synth_scope`
```python theme={null}
import cdktn
cdktn.Testing.synth_scope(
fn: IScopeCallback
)
```
#### `fn`Required
* *Type:* IScopeCallback
***
### `to_be_valid_terraform`
```python theme={null}
import cdktn
cdktn.Testing.to_be_valid_terraform(
received: str
)
```
#### `received`Required
* *Type:* str
***
### `to_have_data_source`
```python theme={null}
import cdktn
cdktn.Testing.to_have_data_source(
received: str,
resource_type: str
)
```
#### `received`Required
* *Type:* str
***
#### `resource_type`Required
* *Type:* str
***
### `to_have_data_source_with_properties`
```python theme={null}
import cdktn
cdktn.Testing.to_have_data_source_with_properties(
received: str,
resource_type: str,
properties: typing.Mapping[typing.Any] = None
)
```
#### `received`Required
* *Type:* str
***
#### `resource_type`Required
* *Type:* str
***
#### `properties`Optional
* *Type:* typing.Mapping\[typing.Any]
***
### `to_have_provider`
```python theme={null}
import cdktn
cdktn.Testing.to_have_provider(
received: str,
resource_type: str
)
```
#### `received`Required
* *Type:* str
***
#### `resource_type`Required
* *Type:* str
***
### `to_have_provider_with_properties`
```python theme={null}
import cdktn
cdktn.Testing.to_have_provider_with_properties(
received: str,
resource_type: str,
properties: typing.Mapping[typing.Any] = None
)
```
#### `received`Required
* *Type:* str
***
#### `resource_type`Required
* *Type:* str
***
#### `properties`Optional
* *Type:* typing.Mapping\[typing.Any]
***
### `to_have_resource`
```python theme={null}
import cdktn
cdktn.Testing.to_have_resource(
received: str,
resource_type: str
)
```
#### `received`Required
* *Type:* str
***
#### `resource_type`Required
* *Type:* str
***
### `to_have_resource_with_properties`
```python theme={null}
import cdktn
cdktn.Testing.to_have_resource_with_properties(
received: str,
resource_type: str,
properties: typing.Mapping[typing.Any] = None
)
```
#### `received`Required
* *Type:* str
***
#### `resource_type`Required
* *Type:* str
***
#### `properties`Optional
* *Type:* typing.Mapping\[typing.Any]
***