一、parameterized介绍

之前我们写过

Unittest第三方库parameterized类似Unittest的DDT、Pytest@pytest.mark.parametrize，可以实现参数化用户数据驱动，避免写多个方法（冗余）

二、安装

pip  install  parameterized

三、导入

from parameterized import parameterized,param

四、实例

1、实现2个参数相加等于第3个参数，我们可以看到，参数是以列表形式传入的，根据参数个数，迭代不同次数

from parameterized import parameterized,param
import unittest
import requests
class Test(unittest.TestCase):@parameterized.expand([param(1,2,3),param('he','llo','hello')])def test(self,test1,test2,test3):self.assertEqual((test1+test2),test3)if __name__ == '__main__':unittest.main()Testing started at 12:36 ...
"C:\Program Files\Python35\python.exe" "C:\Program Files\JetBrains\PyCharm Community Edition 2018.2.4\helpers\pycharm\_jb_unittest_runner.py" --path C:/Users/wangli/PycharmProjects/Test/test/test01.py
Launching unittests with arguments python -m unittest C:/Users/wangli/PycharmProjects/Test/test/test01.py in C:\Users\wangli\PycharmProjects\Test\testRan 2 tests in 0.001sOKProcess finished with exit code 0

2、我们可以通过上面方法实现我们测试用例的迭代，将测试用例的请求参数组装成列表形式，传给@parameterized.expand([参数1，参数2，参数3])，实现测试用例的多次迭代，避免写多个测试方法

from parameterized import parameterized,param
import unittest
import requests
class Test(unittest.TestCase):@parameterized.expand([param('url','headers','data1'),param('url','headers','data2')])def test(self,url,headers,data):print(url,headers,data)r=requests.post(url=url,headers=headers,json=data)if __name__ == '__main__':unittest.main()Testing started at 12:46 ...
"C:\Program Files\Python35\python.exe" "C:\Program Files\JetBrains\PyCharm Community Edition 2018.2.4\helpers\pydev\pydevd.py" --multiproc --qt-support=auto --client 127.0.0.1 --port 1145 --file "C:\Program Files\JetBrains\PyCharm Community Edition 2018.2.4\helpers\pycharm\_jb_unittest_runner.py" --path C:/Users/wangli/PycharmProjects/Test/test/test01.py
pydev debugger: process 24756 is connectingConnected to pydev debugger (build 182.4505.26)
Launching unittests with arguments python -m unittest C:/Users/wangli/PycharmProjects/Test/test/test01.py in C:\Users\wangli\PycharmProjects\Test\testRan 2 tests in 0.004sOK
url headers data1
url headers data2Process finished with exit code 0