pytest 入门指南

pytest

安装

pip install -U pytest
pytest --version

demo

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

运行多个test

pytest 会运行当前目录下和它子目录下所有 test_*.py或*_test.py。

assert 异常触发

import pytest
def f():
    raise SystemExit(1)
def test_mytest():
    with pytest.raises(SystemExit):
        f()

pytest -q test_sysexit.py

在一个类中组织多个test

class TestClass(object):
    def test_one(self):
        x = "this"
        assert 'h' in x
    def test_two(self):
        x = "hello"
        assert hasattr(x, 'check')