试图将参数传递给unittest子类时出现Python TypeError

我试图将参数传递给unittest子类方法。请原谅我的无知——我几天前才开始用Python编写代码。显然，我可以在子类本身中硬编码参数，但这将消除它与其他用户名/密码组合的重用。当我运行下面的run_tests.py时，我得到一个错误“TypeError:runTest（）正好接受3个参数（给定4个）”

下面是run_tests.py：

from selenium import webdriver
import unittest
from testcases import login


def my_suite():

    suite = unittest.TestSuite()
    suite.addTest (login.Login().runTest("username1", "password1", "page title"))
    return suite


if __name__ == '__main__':
    runner = unittest.TextTestRunner()
    runner.run(my_suite())

下面是testcases/basetestcase.py：

from selenium import webdriver
import unittest

class BaseTestCase (unittest.TestCase):

def setUp(self):
    self.driver = webdriver.Firefox()

    self.driver.implicitly_wait(30)
    self.base_url = "http://website"

def tearDown(self):
    self.driver.quit()

下面是testcases/login.py

import common_page_elements
from basetestcase import BaseTestCase

class Login (BaseTestCase):
    def runTest(username, password, verification):
        """ Test logging in. """
        driver = self.driver
        driver.get(self.base_url)
        driver.find_element_by_id(common_page_elements.textfield_username).clear()
        driver.find_element_by_id(common_page_elements.textfield_username).send_keys(username)
        driver.find_element_by_id(common_page_elements.textfield_password).clear()
        driver.find_element_by_id(common_page_elements.textfield_password).send_keys(password)
        driver.find_element_by_name(common_page_elements.button_submit).click()        

        self.assertTrue(verification in self.driver.title)

---

由于

runTest

已成为类方法，因此必须包含

self

参数：

class Login (BaseTestCase):
    def runTest(self, username, password, verification):
                ^^^^