1、pytest 是 python 的第三方单元测试框架，比自带 unittest 更简洁和高效
2、安装 pytest
pip install pytest
3、验证 pytest 是否安装成功
pip show pytest
4、使用 pytest 执行测试需要遵行的规则
.py 测试文件必须以 test_ 开头（或者以 _test 结尾）
测试类必须以 Test 开头，并且不能有 init 方法
测试方法必须以 test_ 开头
断言必须使用 assert，pytest 中没有自带的断言方法
5、实例讲解
# test_demo.py import pytest def test_01(): print("test_01") def test_02(): print("test_02") def test_03(): print("test_03") if __name__ == ‘__main__‘: pytest.main() # 结果如下 ============================= test session starts ============================= platform win32 -- Python 3.6.0, pytest-5.4.2, py-1.8.1, pluggy-0.13.1 rootdir: D:\work_doc\CodeFile\practice\pytest_demo plugins: html-2.1.1, metadata-1.9.0 collected 3 items test_demo1.py ... [100%] ============================== 3 passed in 0.05s ============================== Process finished with exit code 0
import pytest def test_01(): print("test_01") def test_02(): print("test_02") def test_03(): print("test_03") if __name__ == ‘__main__‘: pytest.main(["-s"]) # 在 main() 中加入 ["-s"] # 结果如下 ============================= test session starts ============================= platform win32 -- Python 3.6.0, pytest-5.4.2, py-1.8.1, pluggy-0.13.1 rootdir: D:\work_doc\CodeFile\practice\pytest_demo plugins: html-2.1.1, metadata-1.9.0 collected 3 items test_demo1.py test_01 .test_02 .test_03 . ============================== 3 passed in 0.02s ============================== Process finished with exit code 0
# test_demo1.py def test_01(): print("test_01") def test_02(): print("test_02") def test_03(): print("test_03")
# run_all.py import pytest if __name__ == ‘__main__‘: pytest.main(["D:/test_demo1.py"]) # 结果如下 ============================= test session starts ============================= platform win32 -- Python 3.6.0, pytest-5.4.2, py-1.8.1, pluggy-0.13.1 rootdir: D:plugins: html-2.1.1, metadata-1.9.0 collected 3 items test_demo1.py ... [100%] ============================== 3 passed in 0.01s ============================== Process finished with exit code 0
# demo1/test_demo1.py demo1 目录下的 test_demo1.py 文件 def test_01(): print("test_01") def test_02(): print("test_02") def test_03(): print("test_03")
# demo2/test_demo2.py demo2 目录下的 test_demo2.py 文件 def test_04(): print("test_04") def test_05(): print("test_05") def test_06(): print("test_06")
import pytest if __name__ == ‘__main__‘: pytest.main(["D:/demo1"，"D:/demo2"]) # 指定 D:/demo1 和 D:/demo2 目录 # 结果如下 ============================= test session starts ============================= platform win32 -- Python 3.6.0, pytest-5.4.2, py-1.8.1, pluggy-0.13.1 rootdir: D: plugins: html-2.1.1, metadata-1.9.0 collected 6 items demo1\test_demo1.py ... [ 50%] demo2\test_demo2.py ... [100%] ============================== 6 passed in 0.04s ============================== Process finished with exit code 0
原文：https://www.cnblogs.com/ZhengYing0813/p/12877802.html