Python-即使出现一些错误，如何继续我的测试脚本

Posted 2023-03-22

【中文标题】Python-即使出现一些错误，如何继续我的测试脚本

【英文标题】：Python-How to continue my test script even if some error comes

【发布时间】：2018-12-20 09:11:30

【问题描述】：

这是我的代码。我编写了可以测试多个测试用例的脚本。当出现错误时，此脚本会引发异常，但是我希望它保留错误计数及其描述，并在测试执行后记录它是成功还是失败。更重要的是应该以任何方式运行完整的测试脚本。

from selenium import webdriver
from generic_functions.FindElement import HandyWrappers
from generic_functions.takescreenshots import Screenshot
from generic_functions.error_handle import CatchExceptions
import os
import time
import unittest


class TestEnrollment(unittest.TestCase):
    driverLocation = 
    "C:\\Users\\Sales\\Desktop\\Automation\\Trendz\\libs\\chromedriver.exe"
    os.environ["webdriver.chrome.driver"] = driverLocation
    driver = webdriver.Chrome(driverLocation)
    driver.maximize_window()
    driver.implicitly_wait(10)


def test_login(self):
    try:
        baseURL = "https://portal.ABCD.com"
        driver = self.driver
        driver.get(baseURL)
        hw = HandyWrappers(driver)

        username = hw.getElement(".//form[@id='login-form']/fieldset/section[1]/label[2]/input[@name='email']",
                                 locatorType="xpath")
        username.send_keys("[e-mail]")
        time.sleep(2)

        password = hw.getElement(".//form[@id='login-form']/fieldset/section[2]/label[2]/input[@name='password']",
                                 locatorType="xpath")
        password.send_keys("ABCD09")

        signIn = hw.getElement(".//form[@id='login-form']/footer/button[contains(text(),'Sign in')]",
                               locatorType="xpath")
        signIn.click()

        self.assertTrue(driver.find_element_by_xpath(".//header[@id='header']/section/div/div[@id='logout']/span/a12"), "Sign Out")


    except Exception as err:
          raise err

def test_menu_enr(self):
    driver = self.driver
    hw = HandyWrappers(driver)

    find_enrollment = hw.getElement(".//aside[@id='left-panel']/nav/ul[14]/li/a/span", locatorType="xpath")
    find_enrollment.click()


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

【问题讨论】：

你在test_login 中有raise err，当异常发生时会抛出错误。删除它并打印错误，如print(err)

是的。我已经做到了。但它显示“测试结果正常”。但是有一个错误，必须在最终结果中@REDDYPRASAD

基本上我必须在我的测试报告中记录该错误。如果我按照你说的那样做，那么它永远不会出现错误计数。

【参考方案1】：

不要提出，使用pass或continue

def test_login():
   try:
       ... 
   except Exception:
       # log the exception here
       pass  # or you could use 'continue'

注意：也必须调查一下diff bw pass and continue

【讨论】：

我按照你说的尝试过，但它没有给我错误计数但是有一个错误。

【参考方案2】：

收集某个列表中的所有错误，然后在测试结束时断言错误列表

from selenium import webdriver
from generic_functions.FindElement import HandyWrappers
from generic_functions.takescreenshots import Screenshot
from generic_functions.error_handle import CatchExceptions
import os
import time
import unittest


class TestEnrollment(unittest.TestCase):
    driverLocation = "C:\\Users\\Sales\\Desktop\\Automation\\Trendz\\libs\\chromedriver.exe"
    os.environ["webdriver.chrome.driver"] = driverLocation
    driver = webdriver.Chrome(driverLocation)
    driver.maximize_window()
    driver.implicitly_wait(10)

    def setUp(self):
        self.errors = []

    def tearDown(self):
        self.assertEqual([], self.errors)

    def test_login(self):
        try:
            baseURL = "https://portal.ABCD.com"
            driver = self.driver
            driver.get(baseURL)
            hw = HandyWrappers(driver)

            username = hw.getElement(".//form[@id='login-form']/fieldset/section[1]/label[2]/input[@name='email']",
                                     locatorType="xpath")
            username.send_keys("[e-mail]")
            time.sleep(2)

            password = hw.getElement(".//form[@id='login-form']/fieldset/section[2]/label[2]/input[@name='password']",
                                     locatorType="xpath")
            password.send_keys("ABCD09")

            signIn = hw.getElement(".//form[@id='login-form']/footer/button[contains(text(),'Sign in')]",
                                   locatorType="xpath")
            signIn.click()

            self.assertTrue(driver.find_element_by_xpath(
                ".//header[@id='header']/section/div/div[@id='logout']/span/a12"), "Sign Out")

        except Exception as err:
            self.errors.append(err)

    def test_menu_enr(self):
        driver = self.driver
        hw = HandyWrappers(driver)

        find_enrollment = hw.getElement(
            ".//aside[@id='left-panel']/nav/ul[14]/li/a/span", locatorType="xpath")
        find_enrollment.click()


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

tearDown 方法将在最后运行并显示所有错误消息（如果有）

据我所知，这不是理想的解决方案。它是一种黑客修复

【讨论】：

是的，只有当我在函数中调用断言时它才对我有用，否则它会引发错误。

如果断言中没有出现错误，请告诉我该怎么做。

如果不存在错误意味着代码运行良好。我们不必做任何事情。你想做什么？？

【参考方案3】：

如果您将 selenium webdriver 与 Python unittest 一起使用（看起来像您），SeleniumBase 框架具有内置的漂亮的 delayed_assert_text 和 delayed_assert_element 方法，用于在测试结束时处理测试失败。您可以使用 pip 安装 seleniumbase，或者从 github 克隆 repo。

以下代码取自this example。

from seleniumbase import BaseCase

class MyTestClass(BaseCase):

    def test_delayed_asserts(self):
        self.open('http://xkcd.com/993/')
        self.wait_for_element('#comic')
        self.delayed_assert_element('img[]')
        self.delayed_assert_element('img[]')  # Will Fail
        self.delayed_assert_element('#comicmap')
        self.delayed_assert_text('Fake Item', '#middleContainer')  # Will Fail
        self.delayed_assert_text('Random', '#middleContainer')
        self.delayed_assert_element('a[name="Super Fake !!!"]')  # Will Fail
        self.process_delayed_asserts()

在脚本内部，有多个断言会失败，但只有在调用self.process_delayed_asserts() 之后才会失败。这是运行后的输出：

pytest delayed_assert_test.py

=============================== test session starts ===============================
platform darwin -- Python 3.6.5, pytest-3.7.3, py-1.5.4, pluggy-0.7.1

delayed_assert_test.py F

==================================== FAILURES =====================================
________________________ MyTestClass.test_delayed_asserts _________________________
E               Exception: 
E               *** DELAYED ASSERTION FAILURES FOR: examples.delayed_assert_test.MyTestClass.test_delayed_asserts
E               CHECK #2: (https://xkcd.com/993/)
E                Element img[] was not visible after 1 second!
E               CHECK #4: (https://xkcd.com/993/)
E                Expected text Fake Item for #middleContainer was not visible after 1 second!
E               CHECK #6: (https://xkcd.com/993/)
E                Element a[name="Super Fake !!!"] was not visible after 1 second!

Exception
============================ 1 failed in 7.53 seconds =============================