old_contents: """
  :Copyright: 2006-2020 Jochen Kupperschmidt
  :License: Modified BSD, see LICENSE for details.
  
  API-specific fixtures
  """
  
  import pytest
  
  from tests.base import create_admin_app
  from tests.conftest import CONFIG_PATH_DATA_KEY
  
  from .helpers import assemble_authorization_header
  
  
  API_TOKEN = 'just-say-PLEASE!'
  
  
  @pytest.fixture(scope='session')
  def app(admin_app, data_path):
      config_overrides = {
          'API_TOKEN': API_TOKEN,
          CONFIG_PATH_DATA_KEY: data_path,
          'SERVER_NAME': 'api.acmecon.test',
      }
      app = create_admin_app(config_overrides)
      with app.app_context():
          yield app
  
  
  @pytest.fixture(scope='session')
  def api_client(app):
      """Provide a test HTTP client against the API."""
      return app.test_client()
  
  
  @pytest.fixture(scope='session')
  def api_client_authz_header():
      """Provide a test HTTP client against the API."""
      return assemble_authorization_header(API_TOKEN)
  
new_contents: """
  :Copyright: 2006-2020 Jochen Kupperschmidt
  :License: Modified BSD, see LICENSE for details.
  
  API-specific fixtures
  """
  
  import pytest
  
  from tests.base import create_admin_app
  from tests.conftest import CONFIG_PATH_DATA_KEY
  
  from .helpers import assemble_authorization_header
  
  
  API_TOKEN = 'just-say-PLEASE!'
  
  
  @pytest.fixture(scope='session')
  # `admin_app` fixture is required because it sets up the database.
  def app(admin_app, make_admin_app):
      config_overrides = {
          'API_TOKEN': API_TOKEN,
          'SERVER_NAME': 'api.acmecon.test',
      }
      app = make_admin_app(**config_overrides)
      with app.app_context():
          yield app
  
  
  @pytest.fixture(scope='session')
  def api_client(app):
      """Provide a test HTTP client against the API."""
      return app.test_client()
  
  
  @pytest.fixture(scope='session')
  def api_client_authz_header():
      """Provide a test HTTP client against the API."""
      return assemble_authorization_header(API_TOKEN)
  
subject: Use `make_admin_app`, document why `admin_app` is still needed