new_contents: import os
  
  from pytest import fixture
  from smif.data_layer import DatafileInterface
  from smif.data_layer.load import dump
  
  
  @fixture(scope='function')
  def get_handler_csv(setup_folder_structure, project_config):
      basefolder = setup_folder_structure
      project_config_path = os.path.join(
          str(basefolder), 'config', 'project.yml')
      dump(project_config, project_config_path)
      return DatafileInterface(str(basefolder), 'local_csv')
  
  
  @fixture(scope='function')
  def get_handler_binary(setup_folder_structure, project_config):
      basefolder = setup_folder_structure
      project_config_path = os.path.join(
          str(basefolder), 'config', 'project.yml')
      dump(project_config, project_config_path)
      return DatafileInterface(str(basefolder), 'local_binary')
  
subject: Move fixtures into data layer