WebDriverException：消息：通过Python unittest模块执行testcases时没有这样的会话

Question

import unittest
from selenium import webdriver
from selenium.webdriver.common.keys import Keys

class KenLogin(unittest.TestCase):

    def test_globe(self):

        global driver

        driver = webdriver.Chrome(executable_path='E:\Learning\chromedriver.exe')
        driver.maximize_window()

    def test_login(self):



        driver.implicitly_wait(2000)
        driver.get("http://qa.kenzen.com")
        username = driver.find_element_by_xpath("/html/body/div[1]/div/div[2]/div/div[2]/form/div[1]/input")
        password = driver.find_element_by_xpath("/html/body/div[1]/div/div[2]/div/div[2]/form/div[2]/input")

        username.send_keys("[e-mail]")
        password.send_keys("Kenzen@123")

        button = driver.find_element_by_xpath("/html/body/div[1]/div/div[2]/div/div[2]/form/button")

        button.send_keys(Keys.ENTER)
        print("Login Pass")


    def test_home(self):

        driver.implicitly_wait(2000)

        teamsummary = driver.find_element_by_id("teamsummary")

        teamsummary.click()
        print("Home Pass")

    def test_newteam(self):

        addteam = driver.find_element_by_xpath("/html/body/div[1]/div/div[2]/div/div/div[1]/ul[2]/li/button")

        addteam.click()

        teamname = driver.find_element_by_xpath("/html/body/div[1]/div/div[2]/div/div/div[2]/div/div[1]/input")#.send_keys(data)

        admin = driver.find_element_by_id("administrator")
        admin.send_keys("[e-mail],[e-mail]")
        addteambutton = driver.find_element_by_xpath("/html/body/div[1]/div/div[2]/div/div/div[2]/div/div[6]/button")
        addteambutton.click()

        print("Team Added")

    def tearDown(self):
        driver.close()


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

========================================================================================================================

回溯（最近一次调用）：文件“E:\learning\workplace\kenzen\kenzen\kenlogin.py”，第37行，在test_home Driver.implicitly_wait(2000)文件“C:\users\pardeep\appdata\local\programs\python\python36-32\lib\site-packages\selenium\webdriver\remote\webdriver.py”，第895行，在implicitly_wait'ms':float(time_to_wait)*1000}）文件“error_handler.check_response（响应）文件”C:\users\pardeep\appdata\local\programs\python\python36-32\lib\site-packages\selenium\webdriver\remote\errorhandler.py“，第242行，在check_response中引发exception_class（消息、屏幕、堆栈跟踪）selenium.common.exceptions.webdriverexception：消息：没有这样的会话（驱动程序信息：Chromedriver=2.38.552522(437E6FBedFA8762DEC75E2C5B3DDB86763DC9DCB)，平台=Windows NT 10.0.14393 x86_64)

========================================================================================================================

----------------------------------------------------------------------
Ran 4 tests in 7.928s

FAILED (errors=6)

Answer 1

在使用Python和unittest时，您需要注意以下事项：

>

def setUp(self):setUp()是初始化的一部分，并且在您要在此testcase类中编写的每个测试函数之前都将调用此方法。

maximize_window():不使用maximize_window()使用Chrome.Options类最大化浏览器窗口。

implicitly_wait():隐式等待一旦设置，隐式等待将为WebDriver对象实例的生命周期设置。

始终在TearDown(){}方法中调用driver.quit()以正常关闭和销毁WebDriver和Web客户端实例。

这里是您自己的代码块，上面提到了一些小调整：

import unittest
from selenium import webdriver
from selenium.webdriver.common.keys import Keys
from selenium.webdriver.chrome.options import Options
from selenium.webdriver.common.desired_capabilities import DesiredCapabilities

class KenLogin(unittest.TestCase):

    def setUp(self):
        global driver
        options = Options()
        options.add_argument("start-maximized")
        options.add_argument("disable-infobars")
        options.add_argument("--disable-extensions")
        cap = DesiredCapabilities().CHROME
        cap = options.to_capabilities()
        self.driver = webdriver.Chrome(desired_capabilities=cap, executable_path=r'C:\Utility\BrowserDrivers\chromedriver.exe')

    def test_login(self):
        self.driver.implicitly_wait(2000)
        self.driver.get("http://qa.kenzen.com")
        username = self.driver.find_element_by_xpath("/html/body/div[1]/div/div[2]/div/div[2]/form/div[1]/input")
        password = self.driver.find_element_by_xpath("/html/body/div[1]/div/div[2]/div/div[2]/form/div[2]/input")
        username.send_keys("[e-mail]")
        password.send_keys("Kenzen@123")
        button = self.driver.find_element_by_xpath("/html/body/div[1]/div/div[2]/div/div[2]/form/button")
        button.send_keys(Keys.ENTER)
        print("Login Pass")

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


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

控制台输出：

Login Pass
.
----------------------------------------------------------------------
Ran 1 test in 13.731s

OK

import unittest
from selenium import webdriver
from selenium.webdriver.common.keys import Keys
from selenium.webdriver.chrome.options import Options
from selenium.webdriver.common.desired_capabilities import DesiredCapabilities

class KenLogin(unittest.TestCase):

    @classmethod
    def setUpClass(self):
        global driver
        options = Options()
        options.add_argument("start-maximized")
        options.add_argument("disable-infobars")
        options.add_argument("--disable-extensions")
        cap = DesiredCapabilities().CHROME
        cap = options.to_capabilities()
        self.driver = webdriver.Chrome(desired_capabilities=cap, executable_path=r'C:\Utility\BrowserDrivers\chromedriver.exe')

    def test_login(self):
        self.driver.implicitly_wait(2000)
        self.driver.get("http://qa.kenzen.com")
        username = self.driver.find_element_by_xpath("/html/body/div[1]/div/div[2]/div/div[2]/form/div[1]/input")
        password = self.driver.find_element_by_xpath("/html/body/div[1]/div/div[2]/div/div[2]/form/div[2]/input")
        username.send_keys("[e-mail]")
        password.send_keys("Kenzen@123")
        button = self.driver.find_element_by_xpath("/html/body/div[1]/div/div[2]/div/div[2]/form/button")
        button.send_keys(Keys.ENTER)
        print("ENTER Key pressed")

    def test_print_success(self):
        print("Login Pass")

    @classmethod
    def tearDownClass(self):
        self.driver.quit()


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

ENTER Key pressed
.Login Pass
.
----------------------------------------------------------------------
Ran 2 tests in 18.187s

OK