text: from unittest import TestCase
  from flask import Flask
  from app import create_app
  from base_testcase import FlaskTestCase
  
  
  class TestFlaskFactory(TestCase):
      def test_create_app_sould_return_flask_app(self):
          self.assertIsInstance(create_app(), Flask)
  
  
  class TestFlaskConfig(FlaskTestCase):
      def test_app_should_load_development_configuration_secret_key(self):
          self.assertEqual(
              self.app.config['SECRET_KEY'], 'Essa chave não é segura'
          )
  