python 单元测试

单元测试：
工程中需要用到一个功能，
通过代码实现了一个函数，用来完成这个功能。
需要对该功能的输入输出的各种情况，进行各种测试，以确保代码的健壮性
需要多方位，多角度的测试。

1 参考网页

单元测试
用unittest就好

https://www.liaoxuefeng.com/wiki/001374738125095c955c1e6d8bb493182103fac9270762a000/00140137128705556022982cfd844b38d050add8565dcb9000

测试参考代码

mydict.py ----- 需要被单元测试的代码

class Dict(dict):

    def __init__(self, **kw):
        super(Dict, self).__init__(**kw)

    def __getattr__(self, key):
        try:
            return self[key]
        except KeyError:
            raise AttributeError(r"'Dict' object has no attribute '%s'" % key)

    def __setattr__(self, key, value):
        self[key] = value

mydict_test.py ----- 测试代码 ---- 单独的文件 ---- 引用被测试函数，进行多方位测试

import unittest

from mydict import Dict

class TestDict(unittest.TestCase):

    def test_init(self):
        d = Dict(a=1, b='test')
        self.assertEquals(d.a, 1)
        self.assertEquals(d.b, 'test')
        self.assertTrue(isinstance(d, dict))

    def test_key(self):
        d = Dict()
        d['key'] = 'value'
        self.assertEquals(d.key, 'value')

    def test_attr(self):
        d = Dict()
        d.key = 'value'
        self.assertTrue('key' in d)
        self.assertEquals(d['key'], 'value')

    def test_keyerror(self):
        d = Dict()
        with self.assertRaises(KeyError):
            value = d['empty']

    def test_attrerror(self):
        d = Dict()
        with self.assertRaises(AttributeError):
            value = d.empty


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

执行结果：

.....
----------------------------------------------------------------------
Ran 5 tests in 0.000s

OK

另外一个形式：

##import unittest
from unittest import TestCase,main

from mydict import Dict

class TestDict(TestCase):

    def test_init(self):
        d = Dict(a=1, b='test')
        self.assertEquals(d.a, 1)
        self.assertEquals(d.b, 'test')
        self.assertTrue(isinstance(d, dict))

    def test_key(self):
        d = Dict()
        d['key'] = 'value'
        self.assertEquals(d.key, 'value')

    def test_attr(self):
        d = Dict()
        d.key = 'value'
        self.assertTrue('key' in d)
        self.assertEquals(d['key'], 'value')

    def test_keyerror(self):
        d = Dict()
        with self.assertRaises(KeyError):
            value = d['empty']

    def test_attrerror(self):
        d = Dict()
        with self.assertRaises(AttributeError):
            value = d.empty


    def runTest(self):  
        self.test_init()
        self.test_attr()


if __name__ == '__main__':
    TestDict().debug()

需要测试的函数，放入 def runTest(self): 中

补充研究：

# coding: utf-8

import os, sys
from collections import namedtuple
from unittest import TestCase, main
from unittest.mock import MagicMock, patch