使用pytest-dependency与pytest-ordering时测试用例被跳过问题

问题背景 #

在不同Python测试文件中集成pytest-dependency和pytest-ordering插件时，出现依赖测试用例被无故跳过的情况。即使将测试类合并到同一文件，或在依赖类中初始化前置测试类，问题依然存在。

测试代码 #

test_mod_01.py #

import pytest
from pages.Page1 import LaunchPage

@pytest.mark.usefixtures("setup")
class TestPage1:
    @pytest.mark.dependency()
    @pytest.mark.run(order=1)
    def test_page1(self):
        self.lp = LaunchPage(self.driver)
        self.lp.clickButton1()

test_mod_02.py #

import pytest
import softest
from flaky import flaky
from pages.Page2 import TalentPage
from pages.Page3 import CVPage

@pytest.mark.usefixtures("setup")
class TestPage2_3(softest.TestCase):

    @flaky(max_runs=3, min_passes=2)
    @pytest.mark.dependency(depends=["testcases/test_mod_01.py::TestPage1::test_page1"], scope="session")
    @pytest.mark.run(order=2)
    def test_page2(self):
        self.tp = TalentPage(self.driver)
        self.tp.scroll_down()
        self.tp.clickButton2()
        self.tp.clickButton3()

    @flaky(max_runs=3, min_passes=2)
    @pytest.mark.dependency(depends=["TestPage2_3::test_BuildCV_page_2"], scope="session")
    @pytest.mark.run(order=3)
    def test_page3(self):
        self.cvp = CVPage(self.driver)
        self.cvp.clickButton4()
        self.cvp.clickButton5()
        self.cvp.clickButton6()
        self.cvp.clickButton7()

conftest.py #

import pytest
from selenium import webdriver
from selenium.webdriver.chrome.service import Service as ChromeService
from webdriver_manager.chrome import ChromeDriverManager
from selenium.webdriver.edge.service import Service as EdgeService
from webdriver_manager.microsoft import EdgeChromiumDriverManager
from selenium.webdriver.firefox.service import Service as FirefoxService
from webdriver_manager.firefox import GeckoDriverManager

@pytest.fixture()
def setup(request, browser):
    if browser == "chrome":
        options = webdriver.ChromeOptions()
        options.add_argument("--disable-notifications")
        driver = webdriver.Chrome(service=ChromeService(ChromeDriverManager().install()), options=options)
    elif browser == "firefox":
        options = webdriver.FirefoxOptions()
        options.add_argument("--disable-notifications")
        driver = webdriver.Firefox(service=FirefoxService(GeckoDriverManager().install()), options=options)
    elif browser == "edge":
        options = webdriver.EdgeOptions()
        options.add_argument("--disable-notifications")
        driver = webdriver.Edge(service=EdgeService(EdgeChromiumDriverManager().install()), options=options)
    driver.get("https://example.com/")
    driver.maximize_window()
    request.cls.driver = driver
    yield request.cls.driver
    request.cls.driver.quit()

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

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

错误信息 #

(venv) xxxx % pytest -v -s --browser chrome testcases
=============================================================== test session starts ===============================================================
platform darwin -- Python 3.11.4, pytest-7.4.3, pluggy-1.3.0 -- xxxx
cachedir: .pytest_cache
rootdir: xxxx
plugins: flaky-3.7.0, dependency-0.5.1, ordering-0.6
collected 3 items

testcases/test_mod_01.py::TestPage1::test_page1 PASSED
testcases/test_mod_02.py::TestPage2_3::test_page2 SKIPPED (test_page2 depends on testcases/test_...)
testcases/test_mod_02.py::TestPage2_3::test_page3 SKIPPED (test_page3 depends on TestP...)

========================================================== 1 passed, 2 skipped in 14.66s ==========================================================

问题分析 #

1. 依赖名称未明确指定：test_page1的@pytest.mark.dependency()未设置name参数，跨文件引用时pytest-dependency无法准确匹配依赖目标。
2. 依赖目标名称错误：test_page3的依赖写为test_BuildCV_page_2，但实际测试函数名是test_page2，名称不匹配导致依赖校验失败。
3. Scope不匹配：setup fixture的scope是默认的function，但依赖标记使用scope="session"，不同scope下的测试状态无法被正确识别。
4. 节点ID路径错误：test_page2的依赖路径写为testcases/test_mod_01.py::TestPage1::test_page1，但执行命令时已指定testcases为测试目录，rootdir是项目根目录，节点ID不需要前缀testcases/。

修复方案 #

1. 明确指定依赖名称 #

给每个测试用例的dependency标记添加name参数，简化跨文件引用：

修改test_mod_01.py

@pytest.mark.dependency(name="test_page1")
@pytest.mark.run(order=1)
def test_page1(self):
    self.lp = LaunchPage(self.driver)
    self.lp.clickButton1()

修改test_mod_02.py

@flaky(max_runs=3, min_passes=2)
@pytest.mark.dependency(name="test_page2", depends=["test_page1"], scope="class")
@pytest.mark.run(order=2)
def test_page2(self):
    # 原代码保留

@flaky(max_runs=3, min_passes=2)
@pytest.mark.dependency(name="test_page3", depends=["test_page2"], scope="class")
@pytest.mark.run(order=3)
def test_page3(self):
    # 原代码保留

2. 调整Fixture Scope一致性 #

将setup fixture的scope改为class，确保每个测试类复用同一个driver实例，同时依赖标记的scope也设为class：

修改conftest.py

@pytest.fixture(scope="class")
def setup(request, browser):
    # 原代码逻辑保留

3. 修正节点ID（可选） #

如果不想用name参数，可直接使用正确的节点ID（去掉testcases/前缀）：

@pytest.mark.dependency(depends=["test_mod_01.py::TestPage1::test_page1"], scope="class")

内容的提问来源于stack exchange，提问作者Taiwan004