Pytest夹具-带有unittest TestCase的httpserver

Question

我已经用Python编写了api客户端-我应该为它编写测试。我致力于使用pytest和unittest作为核心工具。为了模拟http服务器，我选择pytest-httpserver。我的测试被组织成类和方法，而不是简单的函数。

这是我的简单测试：

from pytest_httpserver import HTTPServer
import requests
import unittest
import pytest
from urllib.parse import urlencode

FAKE_SERVER = "localhost"
FAKE_PORT = 8888

@pytest.fixture(scope="class")
def httpserver_listen_address(request):
    request.cls.httpserver = HTTPServer(FAKE_SERVER, FAKE_PORT)


@pytest.mark.usefixtures("httpserver_listen_address")
class LoginTestCase(unittest.TestCase):

    def test_check_auth_url(self):
        auth_url = f'http://{FAKE_SERVER}:{FAKE_PORT}/auth-token/'

        self.httpserver\
            .expect_request("/auth-token/", method="POST", data=urlencode({}))\
            .respond_with_json({"test": "test"})

        requests.post(self.httpserver.url_for("/auth-token/"), {})

我得到了很多线索：

E           requests.exceptions.ConnectionError: HTTPConnectionPool(
host='localhost', port=8888): 
Max retries exceeded with url: /auth-token/ (
Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x7f055c2c1480>: 
Failed to establish a new connection: [Errno 111] Connection refused'))

我应该如何为httpserver配置使用TestCases的固定设备？

Answer 1

好吧，我很肯定它可以在很多方面实现。但我只找到了一个：

from pytest_httpserver import HTTPServer
import requests
import unittest
import pytest
from urllib.parse import urlencode

FAKE_SERVER = "localhost"
FAKE_PORT = 8888


@pytest.fixture
def my_httpserver(request, httpserver):
    request.cls.httpserver = httpserver


@pytest.mark.usefixtures("my_httpserver")
class Login2TestCase(unittest.TestCase):

    def test_check_auth_url(self):
        auth_url = f'http://{FAKE_SERVER}:{FAKE_PORT}/auth-token/'

        self.httpserver\
            .expect_request("/auth-token/", method="POST", data=urlencode({}))\
            .respond_with_json({"test": "test"})

        requests.post(self.httpserver.url_for("/auth-token/"), {})

怎么一回事？

1. --我正在创建我的夹具my_httpserver --它使用了两个内置的固定装置: request和httpserver。请求是核心pytest的工具--它是某种关联机制--我正在使用它将httpserver绑定到我的TestCase。Httpserver是pytest-httpserver用于管理httpserver.
2. I'm的补丁，它告诉我的类将使用这个工具，@pytest.mark.usefixtures.
3. httpserver在self.httpserver字段中是可见的。