Pytest TypeError：__ init __（）得到一个意外的关键字参数'browser'

Question

我尝试在pytest_addoption(parser)中添加confest.py。 Here are the official Pytest docs

但如果我尝试开始测试，我会看到

TypeError: __init__() got an unexpected keyword argument 'browser'

Confest.py

import pytest
from fixture.application import Application
__author__ = 'Max'

fixture = None

@pytest.fixture
def app(request):
    global fixture
    browser = request.config.getoption("--browser")
    if fixture is None:
        fixture = Application(browser=browser)
    else:
        if not fixture.is_valid:
            fixture = Application(browser=browser)
    fixture.session.ensure_login(username="somename", password="somepassword")
    return fixture

def pytest_addoption(parser):
    # hooks for browsers
    parser.addoption("--browser", action="store", default="chrome")

fixture/application.py

from selenium import webdriver

class Application:

    def __init__(self,browser):
        if browser == "chrome":
            self.wd = webdriver.Chrome()
        elif browser == "firefox":
            self.wd = webdriver.Firefox()
        else:
            raise ValueError("Unrecognized browser %s" % browser)

Answer 1

解决方案

您应该使用Application(browser)（在Confest.py）。

另一个类似问题：__init__() got an unexpected keyword argument 'user'

解释

当您Application(browser=browser)时，您正尝试使用keyword parameters。

关键字参数

的示例

from selenium import webdriver


class Application:
    def __init__(self, *args, **kwargs):
        if kwargs['browser'] == "chrome":
            self.wd = webdriver.Chrome()
        elif kwargs['browser'] == "firefox":
            self.wd = webdriver.Firefox()
        else:
            raise ValueError("Unrecognized browser %s" % kwargs['browser'])