Python pytest自动化测试库十个强大用法示例

# test_example.py
def test_addition():
    assert 2 + 2 == 4

def test_addition():
    assert 2 + 2 == 4

def test_subtraction():
    assert 5 - 3 == 2

import pytest

@pytest.mark.parametrize("a, b, expected", [(1, 2, 3), (4, 5, 9)])
def test_addition(a, b, expected):
    assert a + b == expected

import pytest

@pytest.mark.skip(reason="功能尚未实现")
def test_something():
    # 测试代码
    pass

import pytest

@pytest.mark.xfail(reason="已知存在问题")
def test_division():
    assert 10 / 0 == 5

import pytest

@pytest.fixture
def setup():
    # 执行前置条件的准备工作
    value = 10
    yield value
    # 执行后置条件的清理工作
    value = None

def test_something(setup):
    # 使用前置条件
    result = setup * 2
    assert result == 20

import pytest

@pytest.fixture(params=[2, 3])
def setup(request):
    return request.param

def test_multiplication(setup):
    result = setup * 5
    assert result == 10

import pytest
import threading

@pytest.mark.parametrize("value", [1, 2, 3])
@pytest.mark.concurrent
def test_threading(value):
    assert value == threading.current_thread().ident

import pytest

@pytest.mark.smoke
def test_functionality():
    # 测试代码
    pass

@pytest.mark.regression
def test_performance():
    # 测试代码
    pass

# 安装pytest-html插件
$ pip install pytest-html

# 执行测试并生成HTML报告
$ pytest --html=report.html

# 安装pytest-cov插件
$ pip install pytest-cov

# 执行测试并生成代码覆盖率报告
$ pytest --cov=myproject