使用 Pytest 参数化 Fixture 时未返回预期对象？原因及解决方案

from selenium import webdriver
from selenium.webdriver.chrome.options import Options as ChromeOptions
from selenium.webdriver.firefox.options import Options as FirefoxOptions
import pytest

def create_browser(browser_name, headless=True):
    if browser_name == "chrome":
        options = ChromeOptions()
        if headless:
            options.add_argument("--no-sandbox")
            options.add_argument("--headless")
            options.add_argument("--disable-dev-shm-usage")
            options.add_argument("--disable-gui")
        return webdriver.Chrome(options=options)
    elif browser_name == "firefox":
        options = FirefoxOptions()
        if headless:
            options.add_argument("--headless")
            options.add_argument("--disable-gui")
        return webdriver.Firefox(options=options)
    else:
        raise ValueError(f"Unsupported browser: {browser_name}")


@pytest.fixture(scope="class")
def browser_fixture(request):
    browser_name, headless = request.param
    browser = create_browser(browser_name, headless=headless)
    yield browser
    browser.quit()

import pytest
from django.contrib import management
from django.contrib.auth.models import User

@pytest.mark.parametrize("browser_fixture", [("chrome", False)], indirect=True)
@pytest.mark.slow()
class TestEndToEnd:

    @pytest.fixture(autouse=True)
    def setup(self, browser_fixture, live_server):
        management.call_command("create_project_data", verbosity=0)
        self.browser = browser_fixture
        # At this point I would expect the browser to open
        # but instead self.browser is just the tuple: `('chrome', False)`
        self.live_server_url = live_server.url

    def login_user(
        self, username=None, password="test", user=None, browser=None
    ):
        if browser is None:
            raise Exception("No browser provided")
        # The logic to login here


    def test_as_admin(self):
        standard_user = User.objects.first()
        self.login_user(standard_user.username)
        self.browser.get(self.live_server_url + "/mills/")
        assert "Mills" in self.browser.title