How to use the pysmartthings.app.App function in pysmartthings

def test_init():
        """Tests the init function."""
        # Arrange/Act
        app = App()
        # Assert
        assert app.classifications is not None
        assert app.lambda_functions is not None

def test_description_invalid():
        """Tests valid values of description."""
        # Arrange
        app = App()
        # Act/Assert
        with pytest.raises(ValueError):
            app.description = ''
        with pytest.raises(ValueError):
            app.description = None
        with pytest.raises(ValueError):
            app.description = 'x' * 251

def test_description():
        """Tests get/set of description."""
        # Arrange
        app = App()
        # Act
        expected = "My Description"
        app.description = expected
        actual = app.description
        # Assert
        assert expected == actual

def test_single_instance():
        """Tests get/set of single_instance."""
        # Arrange
        app = App()
        # Act
        expected = True
        app.single_instance = expected
        actual = app.single_instance
        # Assert
        assert expected == actual

async def test_create_app(smartthings):
        """Tests the create app method."""
        # Arrange
        app = App()
        data = get_json('app_post_request.json')
        data['appId'] = APP_ID
        app.apply_data(data)
        # Act
        app, oauth = await smartthings.create_app(app)
        # Assert
        assert app.app_id == APP_ID
        assert oauth.client_id == '7cd4d474-7b36-4e03-bbdb-4cd4ae45a2be'
        assert oauth.client_secret == '9b3fd445-42d6-441b-b386-99ea51e13cb0'

def test_apply_data():
        """Tests the apply_data function."""
        # Arrange
        app = App()
        data = get_json('app_get.json')
        # Act
        app.apply_data(data)
        # Assert
        assert app.app_id == "c6cde2b0-203e-44cf-a510-3b3ed4706996"
        assert app.app_name == "pysmartthings-test"
        assert app.app_type == "WEBHOOK_SMART_APP"
        assert app.classifications == [CLASSIFICATION_AUTOMATION]
        assert app.display_name == "Test"
        assert app.description == \
            "A SmartApp that relays events to the pysmartthings library"
        assert app.single_instance
        assert app.webhook_target_url == \
            "https://homeassistant.sayre.net:8321/"
        assert app.webhook_public_key
        assert app.created_date == "2018-12-15T17:07:41Z"

def test_app_name_invalid():
        """Tests valid values of app_name."""
        # Arrange
        app = App()
        # Act/Assert
        with pytest.raises(ValueError):
            app.app_name = ''
        with pytest.raises(ValueError):
            app.app_name = None
        with pytest.raises(ValueError):
            app.app_name = "My Super Cool App"

def test_display_name_invalid():
        """Tests valid values of display_name."""
        # Arrange
        app = App()
        # Act/Assert
        with pytest.raises(ValueError):
            app.display_name = ''
        with pytest.raises(ValueError):
            app.display_name = None
        with pytest.raises(ValueError):
            app.display_name = 'x' * 76

def __init__(self, api: Api, data=None):
        """Create a new instance of the AppEntity class."""
        Entity.__init__(self, api)
        App.__init__(self)
        if data:
            self.apply_data(data)