无法在Python Selenium Unitest中运行第二个测试功能

Question

在以下代码中，我无法运行第二个测试功能 def testClick（self）

import unittest
from selenium import webdriver
from time import sleep
class LoginMaharaOrgLogin(unittest.TestCase):
    @classmethod
    def setUpClass(inst):
        inst.driver = webdriver.Chrome()
        #inst.driver.maximize_window()
        inst.driver.get("https://demo.mahara.org/")

    def testlogin(self):
        driver = self.driver
        self.assertEqual("Home - Mahara Demo", driver.title)
        driver.find_element_by_xpath("//input[@id='login_login_username']").send_keys("student")
        driver.find_element_by_xpath("//input[@id='login_login_password']").send_keys("MaharaDemo")
        driver.find_element_by_xpath("//input[@id='login_submit']").click()
        driver.find_element_by_xpath("//span[@class='icon icon-chevron-down collapsed']").click()
        sleep(3)

    def testclick(self):
        self.driver.find_element_by_xpath("//span[text()='Logout']").click()

    @classmethod
    def tearDownClass(inst):
        inst.driver.close()
if __name__ == '__main__':
    unittest.main()    

运行上述代码时，我会收到错误，为：

Finding files... done.
Importing test modules ... done.
Hi
======================================================================
ERROR: testclick (Login.LoginMaharaOrgLogin)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "C:UsersKeerthiaradhyaeclipse-workspaceUnit_TestLogin.py", line 25, in testclick
    self.driver.find_element_by_xpath("//span[text()='Logout']").click()
  File "C:UsersKeerthiaradhyaAppDataLocalProgramsPythonPython36-32libsite-packagesseleniumwebdriverremotewebdriver.py", line 365, in find_element_by_xpath
    return self.find_element(by=By.XPATH, value=xpath)
  File "C:UsersKeerthiaradhyaAppDataLocalProgramsPythonPython36-32libsite-packagesseleniumwebdriverremotewebdriver.py", line 855, in find_element
    'value': value})['value']
  File "C:UsersKeerthiaradhyaAppDataLocalProgramsPythonPython36-32libsite-packagesseleniumwebdriverremotewebdriver.py", line 308, in execute
    self.error_handler.check_response(response)
  File "C:UsersKeerthiaradhyaAppDataLocalProgramsPythonPython36-32libsite-packagesseleniumwebdriverremoteerrorhandler.py", line 194, in check_response
    raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.NoSuchElementException: Message: no such element: Unable to locate element: {"method":"xpath","selector":"//span[text()='Logout']"}
  (Session info: chrome=63.0.3239.84)
  (Driver info: chromedriver=2.33.506120 (e3e53437346286c0bc2d2dc9aa4915ba81d9023f),platform=Windows NT 10.0.16299 x86_64)

----------------------------------------------------------------------
Ran 2 tests in 18.020s
FAILED (errors=1)

，但是如果我包括此：

self.driver.find_element_by_xpath("//span[text()='Logout']").click() 

def testlogin(self)中的语句工作

Answer 1

您可以尝试：

def testclick(self):
    driver.find_element_by_xpath("//span[text()='Logout']").click()

Answer 2

Unittest Framework根据功能的名称执行测试功能，而不是按照所示顺序执行。在您的情况下，其执行testClick（）＆amp;找不到元素。因此，将test1_login(self):和test2_logout(self):用作函数名称，它将起作用。