烧瓶测试属性错误：在应用程序中找不到response_class

Question

我有baseTestCase：BaseTestCase

import time

from flask_testing import TestCase

from authentek.app import main
from authentek.extensions import db


class BaseTestCase(TestCase):
    """ Base Tests """

    def get_timestamp(self):
        return str(time.time()).replace('.', '_')

    def create_app(self):
        from authentek.internal import app
        app.config.from_object('authentek.server.config.TestingConfig')
        app = main(port=8080)
        return app

    def setUp(self):
        db.create_all()
        db.session.commit()

    def tearDown(self):
        db.session.remove()
        db.drop_all()

错误：

/usr/local/lib/python3.7/site-packages/flask_testing/utils.py:131:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

self = <authentek.tests.test_user_model.TestUserModel testMethod=test_encode_auth_token>

    def _pre_setup(self):
        self.app = self.create_app()

>       self._orig_response_class = self.app.response_class
E       AttributeError: 'NoneType' object has no attribute 'response_class'
/usr/local/lib/python3.7/site-packages/flask_testing/utils.py:146: AttributeError

测试用例

import unittest

from authentek.database.models import User
from authentek.extensions import db
from authentek.tests.base import BaseTestCase


class TestUserModel(BaseTestCase):

    def test_encode_auth_token(self):
        user = User(
            email='test_{}@test.com'.format(self.get_timestamp()),
            username='test_{}'.format(self.get_timestamp()),
            password='test',
        )
        db.session.add(user)
        db.session.commit()
        auth_token = user.encode_auth_token(user.id)
        self.assertTrue(isinstance(auth_token, str))

当我运行另一个测试用例时，它会挂起，直到我因键盘中断而退出

另一个测试用例是这个：

import json
import time
import unittest

from authentek.database.models import User, BlacklistToken
from authentek.extensions import db
from authentek.logger import log
from authentek.tests.base import BaseTestCase


class TestAuthBlueprint(BaseTestCase):
    def test_non_registered_user_login(self):
        """ Test for login of non-registered user """
        with self.client:
            response = self.register_user('joe_{}'.format(self.get_timestamp()),
                                          'joe_{}@gmail.com'.format(self.get_timestamp()), '123456')

            data = json.loads(response.data.decode())
            self.assertEqual(data['status'], 'fail')
            self.assertTrue(data['message'] == 'User does not exist.')
            self.assertTrue(response.content_type == 'application/json')
            self.assertEqual(response.status_code, 404)

很难理解错误的性质，因为似乎有一个self.client挂在这里，并且错误输出抱怨另一个测试，该测试将response_class作为app.response_class的属性错误。