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pytest测试框架系列 - Pytest pytest-assume 多重校验神器如何使用你知道吗

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## 前言 **注意点:pytest-assume 导包和使用都已经改变,源码注释未进行更新** 场景 - 在一个支付场景里面,我们在商品界面进行了支付成功,想要看下支付金额是否正确、订单记录是否正确、剩余金额是否正确、支付页面金额显示等 - 就是一条用例执行完成,存在多个检查点 - 如果使用普通的断言方法就是写多个 `assert` 进行断言 这种情况存在一个弊端,如果其中一条断言失败了,其他断言就不会执行,这与我们测试的初衷就不一样。 为了解决这个问题,我们引入多重断言校验 ` pytest-assume` 插件 ## pytest-assume详解 (建议掌握程度:☆☆☆☆☆) ### **安装** - 在命令行窗口输入: `pip install pytest-assume` - 查看安装版本:`pip show pytest-assume` ![在这里插入图片描述](https://www.icode9.com/i/ll/?i=20210709213351126.png?,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTA0NTQxMTc=,size_16,color_FFFFFF,t_70) ### **使用** **普通断言示例:** ```python # !/usr/bin/python3 # _*_coding:utf-8 _*_ """" # @Time  :2021/7/9 21:31 # @Author  : king # @File   :test_assume.py # @Software :PyCharm # @blog :https://blog.csdn.net/u010454117 # @WeChat Official Account: 【测试之路笔记】 """ import pytest def add(a, b): return a + b def test_assume(): assert add(1, 2) == 4 assert 1 == 2 assert False if __name__ == '__main__': pytest.main() ``` 执行结果: ![在这里插入图片描述](https://www.icode9.com/i/ll/?i=20210709220531469.png?,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTA0NTQxMTc=,size_16,color_FFFFFF,t_70) **pytest-assume 多重断言** ```python # !/usr/bin/python3 # _*_coding:utf-8 _*_ """" # @Time  :2021/7/9 21:31 # @Author  : king # @File   :test_assume.py # @Software :PyCharm # @blog :https://blog.csdn.net/u010454117 # @WeChat Official Account: 【测试之路笔记】 """ import pytest from pytest_assume.plugin import assume def add(a, b): print("我开始执行") return a + b def test_assume(): with assume: assert add(1, 2) == 4 assert 1 == 2 assert False assert add(1, 3) == 4 if __name__ == '__main__': pytest.main(["-s"]) ``` 执行结果: ```python Testing started at 22:07 ... F:\pytest_demo\Scripts\python.exe "D:\JetBrains\PyCharm 2019.2.5\helpers\pycharm\_jb_pytest_runner.py" --path E:/pytest_demo/class_06/test_assume.py Launching pytest with arguments E:/pytest_demo/class_06/test_assume.py in E:\pytest_demo\class_06 ============================= test session starts ============================= platform win32 -- Python 3.7.0, pytest-6.2.4, py-1.10.0, pluggy-0.13.1 -- F:\pytest_demo\Scripts\python.exe cachedir: .pytest_cache rootdir: E:\pytest_demo\class_06 plugins: assume-2.4.3, rerunfailures-10.1 collecting ... collected 1 item test_assume.py::test_assume FAILED [100%]我开始执行 test_assume.py:19 (test_assume) def test_assume(): with assume: > assert add(1, 2) == 4 E pytest_assume.plugin.FailedAssumption: E 1 Failed Assumptions: E E test_assume.py:25: AssumptionFailure E >> assert add(1, 3) == 4 E AssertionError: assert 3 == 4 test_assume.py:22: FailedAssumption ================================== FAILURES =================================== _________________________________ test_assume _________________________________ def test_assume(): with assume: > assert add(1, 2) == 4 E pytest_assume.plugin.FailedAssumption: E 1 Failed Assumptions: E E test_assume.py:25: AssumptionFailure E >> assert add(1, 3) == 4 E AssertionError: assert 3 == 4 test_assume.py:22: FailedAssumption ---------------------------- Captured stdout call ----------------------------- 我开始执行 =========================== short test summary info =========================== FAILED test_assume.py::test_assume - pytest_assume.plugin.FailedAssumption: ============================== 1 failed in 0.04s ============================== Process finished with exit code 0 Assertion failed Assertion failed ``` ## 总结 - 普通 `assert` 遇见失败后面就不执行 - pytest_assume 会执行所有的 `assert` 断言 以上为内容纯属个人理解,如有不足,欢迎各位大神指正,转载请注明出处! >**如果觉得文章不错,欢迎关注微信公众号,微信公众号每天推送相关测试技术文章** 个人微信号:搜索 【测试之路笔记】

标签:assume,py,pytest,assert,add,Pytest,test
来源: https://blog.51cto.com/king15800/3034808