oneTimeSetup方法具有fixture scope=“会话”时出错

Question

我使用unittest和pytest以及页面对象模型实现了selenium python框架。我创建了一个conftest。使用oneTimeSetup方法的py文件，该方法将初始化webdriver，然后它将被我的所有测试文件使用。下面是我使用的方法。我创建了如下webdriver工厂

WebDriverFactory.py：

from selenium import webdriver
class WebDriverFactory():
    def __init__(self,browser):
        self.browser = browser

    def get_browser_instance(self):
        if self.browser == "FF":
            driver = webdriver.Firefox()

        elif self.browser == "Chrome":
            driver = webdriver.Chrome()

        elif self.browser == "IE":
            driver = webdriver.Ie()

        else:
            driver = webdriver.Chrome()


        baseUrl = "http://live.demoguru99.com/index.php/"
        driver.delete_all_cookies()
        driver.maximize_window()
        driver.implicitly_wait(5)
        driver.get(baseUrl)

        return driver

conftest.py代码：

import pytest
from base.WebDriverFactory import WebDriverFactory

def pytest_addoption(parser):
    parser.addoption("--browser")

@pytest.fixture(scope="session")
def browser(request):
    return request.config.getoption("--browser")

@pytest.fixture(scope="session")
def oneTimeSetup(request,browser):
    print("This is one time setup")
    wdf = WebDriverFactory(browser)
    driver = wdf.get_browser_instance()

    if request.cls is not None:
        request.cls.driver = driver

    yield driver
    driver.quit()
  

下面是我的测试文件：

from pages.mobile_page.mobile_page import MobilePage
from utilities.mark_test_status import MarkTestStatus
import unittest
import pytest

@pytest.mark.usefixtures("oneTimeSetup")
class TestMobile(unittest.TestCase):

    @pytest.fixture(autouse=True)
    def classObject(self,oneTimeSetup):
        self.mb = MobilePage(self.driver)
        self.ts = MarkTestStatus(self.driver)

    def test_Mobile(self):
        result = self.mb.mobile()
        self.ts.finalMark(testcase="Mobile Sort By test",result=result,resultMessage="Testing Mobile SOrt functionality")

在cmd中运行测试时，我得到以下错误。cmd

如果我在conftest中将oneTimeSetup的范围更改为“class”。py，测试运行正常。但当我添加更多测试时，我希望在单个webdriver会话中运行所有mt测试。

详细信息：Selenium Python v 3.1.41.0 Chrome 86.0.4240.111 pytest 6.0.1

Answer 1

oneTimeSetup fixture是会话级别，会话级别请求参数没有cls属性。而不是访问请求。像这样的cls

if request.cls is not None:
    request.cls.driver = driver

使用request.node.items和setattr的个别项目像这样

session = request.node
for item in session.items:
    cls = item.getparent(pytest.Class)
    setattr(cls.obj, "driver", driver)