Pytest-1

1.安装

pip install -U pytest
#查看是否安装成功
pytest --version

2.新建一个test_case.py文件

文件命名以test_开头或者_test结尾
测试函数以test_开头
断言使用assert

3.文件中写测试代码

# content of test_sample.py
def func(x):
    return x +1

def test_answer():
    assert func(3)==5

4.执行测试用例

1.pytest
2.py.test
3.python -m pytest
#如果指定运行单个文件，使用 -q参数
#不带参数，在某个文件夹下执行时，它会查找该文件夹下所有的符合条件的用例（查看用例设计原则）

➜  testcases pytest
============================= test session starts ==============================
platform darwin -- Python 3.7.2, pytest-7.4.0, pluggy-1.2.0
rootdir: /Users/qina/workspace/python-space/python-test/testcases
collected 1 item

test_api.py F                                                            [100%]

=================================== FAILURES ===================================
_________________________________ test_answer __________________________________

    def test_answer():
>       assert  func(3)==5
E       assert 4 == 5
E        +  where 4 = func(3)

test_api.py:8: AssertionError
=========================== short test summary info ============================
FAILED test_api.py::test_answer - assert 4 == 5
============================== 1 failed in 0.06s ===============================

➜  testcases pytest -q test_api.py
F                                                                        [100%]
=================================== FAILURES ===================================
_________________________________ test_answer __________________________________

    def test_answer():
>       assert  func(3)==5
E       assert 4 == 5
E        +  where 4 = func(3)

test_api.py:8: AssertionError
=========================== short test summary info ============================
FAILED test_api.py::test_answer - assert 4 == 5
1 failed in 0.07s