AttributeError:'LoginPage'对象没有属性'driver' [英] AttributeError: 'LoginPage' object has no attribute 'driver'

问题描述

我有一个基础课.继承基类，login.py可以正常运行.但是当我运行Company_Management.py时，它给了我:

I have a base class. Inheriting base class, login.py runs without any problem. But when I run Company_Management.py its giving me:

Traceback (most recent call last):
  File "/home/sohel/eclipse-workspace/Copell/copell/Company_Management.py", line 22, in test_company 
    em.test_logn()
  File "/home/sohel/eclipse-workspace/Copell/copell/login.py", line 15, in test_logn
    driver =self.driver
AttributeError: 'LoginPage' object has no attribute 'driver' 

我想做的是，当我运行Company_Management.py时，它将首先执行test_logn(self)方法，然后单击xpath中的2个URL.

What I am trying to do is that, when I will run Company_Management.py it will excute test_logn(self) method first then will click on 2 urls from xpath.

import unittest
import time
from selenium import webdriver

class Login(unittest.TestCase):
   @classmethod
   def setUpClass(cls):
       cls.driver = webdriver.Chrome('/home/sohel/eclipse-workspace/chromedriver')   
       cls.driver.maximize_window()
       cls.driver.get("https:www.car.com/login?back_url=%2F")
       time.sleep(3) 


   @classmethod 
   def tearDownClass(cls):
       cls.driver.close()

if __name__ == '__main__':
unittest.main()

login.py

import base
import unittest
import time

class LoginPage(base.Login):

    def test_logn(self):
        driver =self.driver
        driver.find_element_by_id("email").clear()
        driver.find_element_by_id("email").send_keys("[e-mail]")
        driver.find_element_by_id("password").clear()
        driver.find_element_by_id("password").send_keys("Abcd1234")
        driver.find_element_by_xpath("//button[@type='submit']").click()

    def test_logout(self):    
        self.driver.find_element_by_xpath("//li[9]/a/span").click()        

if __name__ == '__main__':
unittest.main()

Company_Management.py

import base
import unittest
import login
import logging
import time

class CompanyManagement(base.Login):

    def test_company(self):
        driver = self.driver

        em = login.LoginPage()
        em.test_logn()

        driver.find_element_by_xpath("//ec-ui-side-bar/div/div/ul/li[3]/a/span").click()
        driver.find_element_by_xpath("//ec-ui-side-bar/div/div/ul/li[3]/ul/li/a/span").click()    
        time.sleep(3)              

if __name__ == '__main__':
unittest.main()

错误:test_company(copell.Company_Management.CompanyManagement)------------------------------------- ---------------------------------追溯(最近一次通话最后一次):文件"/home/sohel/eclipse- test_company em.test_logn()中第22行的工作空间/Copell/copell/Company_Management.py"文件，在test_logn驱动程序= self中，文件"/home/sohel/eclipse-workspace/Copell/copell/login.py"，第15行.驱动程序AttributeError:'LoginPage'对象没有属性'驱动程序'------------------------------------- --------------------------------在7.227秒内失败1次测试(错误= 1)

ERROR: test_company (copell.Company_Management.CompanyManagement) ---------------------------------------------------------------------- Traceback (most recent call last): File "/home/sohel/eclipse-workspace/Copell/copell/Company_Management.py", line 22, in test_company em.test_logn() File "/home/sohel/eclipse-workspace/Copell/copell/login.py", line 15, in test_logn driver =self.driver AttributeError: 'LoginPage' object has no attribute 'driver' --------------------------------------------------------------------- Ran 1 test in 7.227s FAILED (errors=1)

推荐答案

两个类都扩展了 [Python 2]: class 单元测试. TestCase ( methodName ='runTest').
根据 [Python 2]:跳过测试和预期的失败

Both your classes extend [Python 2]: class unittest.TestCase(methodName='runTest').
According to [Python 2]: Skipping tests and expected failures

跳过的测试不会在它们周围运行setUp()或tearDown().跳过的课程将不运行setUpClass()或tearDownClass().

Skipped tests will not have setUp() or tearDown() run around them. Skipped classes will not have setUpClass() or tearDownClass() run.

此外，根据 [Python 2]:setUpClass和tearDownClass :

如果要在基类上调用setUpClass和tearDownClass，则您必须自己调用它们.

If you want the setUpClass and tearDownClass on base classes called then you must call up to them yourself.

会发生什么:

• login.py : LoginPage 由 unittest 框架(unittest.main())和 setUpClass自动实例化(并运行) 方法称为- 将 driver 属性添加到 LoginPage 类-并(自动)添加到其所有实例

• Company_Management.py :手动登录 LoginPage ，但 setUpClass 方法未调用-因此 LoginPage (或其任何实例)没有 driver 属性-因此，您的错误.
  要解决此问题，请自行手动调用该方法，或者:

• login.py: LoginPage is instantiated (and run) automatically by the unittest framework (unittest.main()) and setUpClass method is called - which adds the driver attribute to the LoginPage class - and (automatically, to) all its instances

• Company_Management.py: LoginPage is instantiated manually by you (em = login.LoginPage()), but the setUpClass method isn't called - and thus LoginPage (or any of its instances) doesn't have the driver attribute - hence your error.
  To fix it, manually call the method yourself, either:

• 实例化类后(在实例上):

• After instantiating the class (on the instance):

em = login.LoginPage()
em.setUpClass()

关于类本身(最好在实例化之前)

On the class itself (better, before instantiating it)

login.LoginPage.setUpClass()
em = login.LoginPage()

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