【Python】pytest - 自动化测试工具, 帮你写出最好的程序

$ pip install pytest
$ pip list
$ pip show pytest
$ pytest --version
$ pytest --help

def add(x, y):
    return x+y

def test1():
    assert 3 == add(1, 1)

def test2():
    assert 1 != add(1, 1)

$ pytest -vv test_func.py
or
$ pytest

$ pytest --durations=0 -vv test_func.py

import pytest

def func(x):
    if x == 0:
        raise ValueError("value error!")
    else:
        pass

# func(1)
# try:
#     func(0)
# except ValueError as identifier:
#     print("error")

def test_mytest1():
    with pytest.raises(ValueError):
        func(0)

def test_mytest2():
    assert func(1) == None

def add(x, y):
    return x+y

import pytest

@pytest.mark.parametrize(
    "x,y,expected",
    [
        (1, 1, 2),
        (2, 2, 4),
        (10, 10, 20),
    ]
)
def test_add(x, y, expected):
    assert add(x, y) == expected

$ pytest --markers
$ nano pytest.ini
...
[pytest]
markers =
    g1: group1.
    g2: group2.
...
$ pytest --markers

import pytest

@pytest.mark.g1
def test_func1():
    pass

@pytest.mark.g2
def test_func2():
    pass

@pytest.mark.g1
def test_func3():
    pass

@pytest.mark.g2
def test_func4():
    pass

@pytest.mark.g1
def test_func5():
    pass

$ pytest -vv
$ pytest -vv -m g1
$ pytest -vv -m g2