Python Pytest：从父类继承fixture

我有几个测试用例来测试基于flask/connexion的api的端点

现在我想将它们重新排序为类，因此有一个基类：

import pytest
from unittest import TestCase

# Get the connexion app with the database configuration
from app import app


class ConnexionTest(TestCase):
    """The base test providing auth and flask clients to other tests
    """
    @pytest.fixture(scope='session')
    def client(self):
        with app.app.test_client() as c:
            yield c

现在我有了另一个类和我的实际测试用例：

import pytest
from ConnexionTest import ConnexionTest

class CreationTest(ConnexionTest):
    """Tests basic user creation
    """

    @pytest.mark.dependency()
    def test_createUser(self, client):
        self.generateKeys('admin')
        response = client.post('/api/v1/user/register', json={'userKey': self.cache['admin']['pubkey']})
        assert response.status_code == 200

现在不幸的是，我总是得到一个

TypeError: test_createUser() missing 1 required positional argument: 'client'

---

什么是将fixture继承到子类的正确方法？

所以在谷歌搜索关于fixture的更多信息后，我遇到了

因此，需要采取两个步骤

删除unittest测试用例继承

将

@pytest.mark.usefixtures（）

装饰器添加到子类以实际使用该装置

在代码中，它变成了

import pytest
from app import app

class TestConnexion:
    """The base test providing auth and flask clients to other tests
    """

    @pytest.fixture(scope='session')
    def client(self):
        with app.app.test_client() as c:
            yield c

现在是儿童班

import pytest
from .TestConnexion import TestConnexion

@pytest.mark.usefixtures('client')
class TestCreation(TestConnexion):
    """Tests basic user creation
    """
    @pytest.mark.dependency(name='createUser')
    def test_createUser(self, client):
        self.generateKeys('admin')
        response = client.post('/api/v1/user/register', json={'userKey': self.cache['admin']['pubkey']})
        assert response.status_code == 200