ddt implements automated test data-driven (unittest + selenium)

ddt

Python is a third-party package specially designed to implement data-driven

1. Install the corresponding ddt file

   pip install ddt

2. Contains/Module

   • data - storage data format: dictionary tuple list
   • unpack - used for data unpacking, the corresponding data is automatically divided separately
   • fila_data - storage data format: json yaml (read it will be displayed in dictionary format)

3. use

   • import package

   from ddt import ddt, data,file_data,unpack
   

   • Decorate the corresponding class

   @ddt
   class TestLogin(unittest.TestCase):
   	def...
   

   • Prepare test data for use case execution

     Simulate user login, only user name and password are required, only some code snippets are shown here~

     @ddt
     class TestLogin(unittest.TestCase):
     	# 方法一
     	@data({
             
             "username":"yyy","password":"111111"})
     	@unpack
         def test_login_success(self,**paras):
     		self.driver.find_element(By.ID,"username").send_keys(paras["username"])
     		self.driver.find_element(By.ID,"password").send_keys(paras["password"])
     
     	# 方法二 (适用于多个字典数据 单个用例操作)
     	datas = [{
             
             "username":"yyy","password":"111111"},{
             
             "username":"hhh","password":"123456"}]
     	@data(*datas)
     	@unpack
         def test_login_success(self,**paras):
     		self.driver.find_element(By.ID,"username").send_keys(paras["username"])
     		self.driver.find_element(By.ID,"password").send_keys(paras["password"])
     		
     	# 方法三 （data数据为字典类型，参数要和key一样）
     	@data({
             
             "username":"yyy","password":"111111"})
     	@unpack
         def test_login_success(self,username，password):
     		self.driver.find_element(By.ID,"username").send_keys(username)
     		self.driver.find_element(By.ID,"password").send_keys(password)
     
     	# 方法四 (适用于多个数据单个用例操作,这里数据类型为列表或者元祖)
     	@data(["yyy","111111"],["hhh","111111"])
     	@unpack
         def test_login_success(self,username，password):
     		self.driver.find_element(By.ID,"username").send_keys(username)
     		self.driver.find_element(By.ID,"password").send_keys(password)
     	
     	...
     
     

     The above is the implementation of the data module in ddt, let's use the file_data operation below:

     - caseName: test_login_success
       username: yyy
       password: 111111
     

     @ddt
     class TestLogin(unittest.TestCase):
     	@file_data("yaml文件的路径/login.yaml")
     	@unpack
         def test_login_success(self,**paras):
     		self.driver.find_element(By.ID,"username").send_keys(paras["username"])
     		self.driver.find_element(By.ID,"password").send_keys(paras["password"])
     

Summarize

file_data can get the data of json file and yaml file; the data needs to be put into a separate json file, and the content in the json/yaml file needs to correspond to the number of parameters in the def function;

data data is relatively intuitive, directly written in the py file;