DDT practice of UI automated testing

ddt yes Python Third party library ,ddt The module provides the creation of data-driven tests , For detailed information about this module, it is recommended to check with the official , The address is ：https://pypi.org/project/ddt/

PIP install ddt

cmd Open command line input pip install ddt （ The premise is already installed pip）

Pycharm install ddt

Page path ：
File-Settings-Project:Python-Project Interpreter

01

Pycharm function ddt example [ ddt+unittest Come in, data processing , Third party Library ]

# -*-coding:utf-8-*-

import unittest
from selenium import webdriver
from ddt import data, unpack, ddt

# ddt+unittest Come in, data processing , Third party Library 

test_data = [{"url": "http://*.com", "age": 20}, {"url": "http://*.com", "age": 22}]


@ddt  #  Decoration test class 
class Testmethod(unittest.TestCase):
    @data(*test_data)
    @unpack
    def test_print_data(self, url, age):
        print(url)
        print(age)

analysis ：

@data(*test_data) Used to decorate the test method , Get a few parameters , Just execute a few use cases

Knowledge points of indefinite length parameters ：* Take off your coat , There's only one layer off

@unpack

1、 Only in *test_data After use , If unpack Later parameters , Less than 5 individual , have access to unpack. Otherwise, it is not recommended

2、 Pay attention to the case of unequal parameters , Provide the number of corresponding parameters to receive the variable

3、 If you want to have a dictionary unpack, The parameter should be dictionary key value

@unpack

1、 Only in *test_data After use , If unpack Later parameters , Less than 5 individual , have access to unpack. Otherwise, it is not recommended

2、 Pay attention to the case of unequal parameters , Provide the number of corresponding parameters to receive the variable

3、 If you want to have a dictionary unpack, The parameter should be dictionary key value

02

Let's see UI In automation ddt Usefulness ,ddt Library application in UI Automated testing , Implement the code of writing a test case to verify multiple test points .

for example , The management desk you are using now , There are multiple test requirements , If the user name and password input fields are empty , User name is empty 、 The password is not empty , The password is empty. 、 User name is not empty , Different error messages will be returned respectively

# -*-coding:utf-8-*-
import unittest
from selenium import webdriver
from ddt import data, unpack, ddt
import time


@ddt
class XFDJ_login(unittest.TestCase):
    @classmethod
    def setUpClass(cls):
        # print('start! Enter the initialization environment ')
        cls.dr = webdriver.Chrome()
        cls.dr.maximize_window()
        # print(' The test browser is :{0}'.format(cls.dr.name))
        time.sleep(1)

    @classmethod
    def tearDownclass(cls):
        cls.dr.quit()

    @data(('', '', u' Please enter a user name ！'), ('20190604003', '', u' Please input a password  !'), ('', '123456', u' Please enter a user name ！'))
    @unpack
    def test_login(cls, username, password, result):
        ''' Verify console login '''

        ulr1 = 'http://xfdj.kt3.pagoda.com.cn'
        # (u' Visit the background management system of patrol service teaching and testing environment ')
        cls.dr.get(ulr1)
        # print(' Test address is :{0}'.format(cls.dr.current_url))
        time.sleep(1)
        xpath = cls.dr.find_element_by_xpath
        #  Click account to log in , enter one user name + password 
        xpath('//*[@id="app"]/div/div[2]/div[2]/div/div[1]/div').click()
        time.sleep(1)
        #  Capture account text bar , Enter account number 
        xpath('//*[@id="app"]/div/div[2]/div[2]/div/form/div[1]/input').send_keys(username)
        time.sleep(1)
        #  Capture password text bar , Enter password 
        xpath('//*[@id="app"]/div/div[2]/div[2]/div/form/div[2]/input').send_keys(password)
        time.sleep(1)
        #  Click login 
        xpath('//*[@id="app"]/div/div[2]/div[2]/div/form/div[3]/input').click()
        divText = xpath('//*[@id="app"]/div/div[2]/div[2]/div/form/div[1]/div').text
        cls.assertEqual(divText, result)


if __name__ == '__main__':
    unittest.main(verbosity=2)

analysis ：

annotation ： The above code mainly reflects ddt Application in test cases , stay @data The data type in is tuple , You can see the test data in different situations , That is, the following three test points ：

1. User name and password are empty , Click on “ Sign in ” Button , Verify that the error message is “ Please enter a user name ”;

2. User name is not empty , The password is empty. , Click on “ Sign in ” Button , Verify that the error is “ Please input a password ”;

3. User name is empty , The password is not empty , Click on “ Sign in ” Button , Verify that the error is “ Please enter a user name ”.

test_login There are three parameters in , Namely username,password,result, Respectively with @data The tuple data of is mapped one by one

Running results 1 failed, 2 passed in 28.06s Here we can see that the test case with three logins is executed , success 2 strip Report errors 1 strip , The detailed reasons can be analyzed , We make use of ddt You can simply test a function multiple times to execute multiple case, This is it. ddt What's good

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