在pytest中找不到夹具

Question

我在使用以下代码运行 pytest 时遇到以下错误，我无法找出问题所在，请查找下面的代码 sn-ps。

控制台输出：

================================================= test session starts =================================================
platform win32 -- Python 3.7.2, pytest-4.2.0, py-1.7.0, pluggy-0.8.1
rootdir: D:\Workspace\AutomationProject, inifile:
plugins: cov-2.6.1, allure-pytest-2.5.5
collected 1 item

tests\pages\test.py E                                                                                            [100%]

======================================================= ERRORS ========================================================
__________________________________________ ERROR at setup of test.test_test ___________________________________________
file D:\Workspace\AutomationProject\tests\pages\test.py, line 5
      def test_test(self):
E       fixture 'web_driver' not found
>       available fixtures: _UnitTestCase__pytest_class_setup, cache, capfd, capfdbinary, caplog, capsys, capsysbinary, cov, doctest_namespace, monkeypatch, no_cover, pytestconfig, record_property, record_xml_attribute, recwarn, tmp_path, tmp_path_factory, tmpdir, tmpdir_factory
>       use 'pytest --fixtures [testpath]' for help on them.

D:\Workspace\AutomationProject\tests\pages\test.py:5
=============================================== 1 error in 0.12 seconds ===============================================

我的基类包含以下代码：

from selenium import webdriver
import pytest
import unittest

@pytest.fixture(scope="class")
def web_driver(request):
    driver = webdriver.Chrome("C:/chromedriver.exe")
    request.cls.driver = driver
    yield
    web_driver.close()


@pytest.mark.usefixtures("web_driver")
class Base(unittest.TestCase):
    '''
    This fixture contains the set up and tear down code for each test.

    '''
    pass

并且测试类包含以下代码：

from core.web.Base import Base

class test(Base):

    def test_test(self):
        self.driver.get("http://google.com")

测试夹具是 web_driver 仍然找不到错误！

Answer 1

web_driver() 在Base 类范围之外定义，因此它对usefixtures 是不可见的，因为它是test 类范围的一部分。您可以move it to conftest file，但恕我直言，更好的解决方案是将web_driver 移动到Base 中

@pytest.mark.usefixtures("web_driver")
class Base(unittest.TestCase):

    @pytest.fixture(scope="class")
    def web_driver(self, request):
        driver = webdriver.Chrome("C:/chromedriver.exe")
        request.cls.driver = driver
        yield
        driver.close()

附带说明，应该是driver.close()，而不是web_driver.close()