1. Installation and Getting Started

pytest

pip install -U pytest

Run multiple tests

pytest 会运行当前目录及其子目录下所有格式为test_*.py或*_test.py的文件。

Assert that a certain exception is raised

使用raises helper来判断是否抛出了异常

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

# content of test_class.py
class TestClass(object):
    def test_one(self):
        x = "this"
        assert 'h' in x
    def test_two(self):
        x = "hello"
        assert hasattr(x, 'check')
pytest -q test_class.py