old_contents: import pytest
  from werkzeug.datastructures import Headers
  
  from flask import Response, json
  from flask.testing import FlaskClient
  
  import config
  from skylines import create_api_app
  
  
  @pytest.fixture(scope="session")
  def app():
      """Set up global front-end app for functional tests
  
      Initialized once per test-run
      """
      app = create_api_app(config.TESTING_CONF_PATH)
      app.test_client_class = ApiClient
      app.response_class = ApiResponse
      return app
  
  
  class ApiClient(FlaskClient):
      def open(self, *args, **kwargs):
          headers = kwargs.pop('headers', Headers())
          headers.setdefault('User-Agent', 'py.test')
          kwargs['headers'] = headers
  
          return super(ApiClient, self).open(*args, **kwargs)
  
  
  class ApiResponse(Response):
      @property
      def json(self):
          return json.loads(self.data)
  
  
  @pytest.yield_fixture
  def client(app):
      with app.test_client(use_cookies=False) as client:
          yield client
  
new_contents: import pytest
  from werkzeug.datastructures import Headers
  
  from flask import Response, json
  from flask.testing import FlaskClient
  
  import config
  from skylines import create_api_app
  
  
  @pytest.fixture(scope="session")
  def app():
      """Set up global front-end app for functional tests
  
      Initialized once per test-run
      """
      app = create_api_app(config.TESTING_CONF_PATH)
      app.test_client_class = ApiClient
      app.response_class = ApiResponse
      return app
  
  
  class ApiClient(FlaskClient):
      def open(self, *args, **kwargs):
          headers = kwargs.pop('headers', Headers())
          headers.setdefault('User-Agent', 'py.test')
          kwargs['headers'] = headers
  
          json_data = kwargs.pop('json', None)
          if json_data is not None:
              kwargs['data'] = json.dumps(json_data)
              kwargs['content_type'] = 'application/json'
  
          return super(ApiClient, self).open(*args, **kwargs)
  
  
  class ApiResponse(Response):
      @property
      def json(self):
          return json.loads(self.data)
  
  
  @pytest.yield_fixture
  def client(app):
      with app.test_client(use_cookies=False) as client:
          yield client
  
subject: Add support for passing json keyword arguments to request methods