old_contents: from flask import Flask
  import pytest
  
  
  app = Flask('__config_test')
  
  
  @pytest.fixture()
  def client():
      return app, app.test_client()
  
new_contents: from flask import Flask
  import pytest
  
  from flask_extras import FlaskExtras
  
  app = Flask('__config_test')
  app.secret_key = '123'
  app.debug = True
  FlaskExtras(app)
  
  
  @pytest.fixture()
  def client():
      return app, app.test_client()
  
subject: Add config and plugin wrapper for app test fixture.