Python单元测试

python单元测试框架pytest

via: https://zhuanlan.zhihu.com/p/68088736

pytest会在当前路径下搜索test_*.py及*_test.py文件，并测试其中的test_*用例，如：

def inc(x):
    return x +1

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

执行：

$ pytest
============================= test session starts=============================
collected 1 items
test_sample.py F
================================== FAILURES===================================
_________________________________ test_answer_________________________________
    def test_answer():
>       assert inc(3)== 5
E       assert 4 == 5
E        +  where 4 = inc(3)

test_sample.py:5: AssertionError
========================== 1 failed in 0.04 seconds===========================

python 自带的单元测试框架unittest

import os
import unittest

def exec_cmd(cmd):
    r = os.popen(cmd)
    text = r.read()
    r.close()
    return text

def str_to_list(text):
    l = str(text).split('\n')
    return list(filter(lambda x: x != '', map(lambda x: x.strip(), l)))

class TestStringMethods(unittest.TestCase):

    def test_add(self):
        exec_cmd('python ./pkgsync test.json add 1 2 3')
        sync_list = str_to_list(exec_cmd('python ./pkgsync test.json list-sync'))
        self.assertEqual(sync_list, ['1', '2', '3'])

if __name__ == '__main__':
    unittest.main()