copilot 产生 python工具函数并生成单元测试

stock.py 这个文件，我只写了注释（的开头），大部分注释内容和函数都是copilot

# split a string and extract the environment variable from it 
# input can be '', 'path=abc', 'path=abc;path=def', 'path=abc;path=def;path=ghi'
# output is a list of tuple environment variables(key and value)
def split_env_var(env_var):
    env_var_list = []
    if env_var == '':
        return env_var_list
    else:
        env_var_list = env_var.strip(';').split(';')
        env_var_list = [tuple(x.split('=')) for x in env_var_list]
        return env_var_list
  

再新建一个 stock_test.py，写一行注释，Ctrl+L(或者调用 Open compiletion Panel)产生了很多的单元测试样例。

#this is test of stock.py
import unittest
from stock import split_env_var

class TestStock(unittest.TestCase):
    def test_empty(self):
        self.assertEqual(split_env_var(''), [])
    def test_empty2(self):
        self.assertEqual(split_env_var(';'), [('',)])
    def test_one(self):
        self.assertEqual(split_env_var('path=abc;'), [('path', 'abc')])
    def test_two(self):
        self.assertEqual(split_env_var('path=abc;path=def'), [('path', 'abc'), ('path', 'def')])
    def test_three(self):
        self.assertEqual(split_env_var('path=abc;path=def;path=ghi'), [('path', 'abc'), ('path', 'def'), ('path', 'ghi')])
    def test_four(self):
        self.assertEqual(split_env_var('path=abc;path=def;path=ghi;'), [('path', 'abc'), ('path', 'def'), ('path', 'ghi')])
    def test_five(self):
        self.assertEqual(split_env_var('path=abc;path=def;path=ghi;path=jkl'), [('path', 'abc'), ('path', 'def'), ('path', 'ghi'), ('path', 'jkl')])
    def test_six(self):
        self.assertEqual(split_env_var('path=abc;path=def;path=ghi;path=jkl;'), [('path', 'abc'), ('path', 'def'), ('path', 'ghi'), ('path', 'jkl')])
    def test_seven(self):
        self.assertEqual(split_env_var('path=abc;path=def;path=ghi;path=jkl;path=mno'), [('path', 'abc'), ('path', 'def'), ('path', 'ghi'), ('path', 'jkl'), ('path', 'mno')])
    def test_eight(self):
        self.assertEqual(split_env_var('path=abc;path=def;path=ghi;path=jkl;path=mno;'), [('path', 'abc'), ('path', 'def'), ('path', 'ghi'), ('path', 'jkl'), ('path', 'mno')])
    def test_nine(self):
        self.assertEqual(split_env_var('path=abc;path=def;path=ghi;path=jkl;path=mno;path=pqr'), [('path', 'abc'), ('path', 'def'), ('path', 'ghi'), ('path', 'jkl'), ('path', 'mno'), ('path', 'pqr')])

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

再装一个 Python Test Explorer 插件用来进行 GUI test

附上我的 python test gui 配置
.vscode/settings.jon

{
  "python.testing.unittestEnabled": true,
  "python.testing.unittestArgs": [
    "-v",
    "-s",
    "./tmp",
    "-p",
    "*_test.py"
  ],
}

有了 copilot 这个代码神器，之后的代码效率可以提升很多，之后要学会和这个超级智能助手交流，使用 pilot chat 功能，阅读开源代码的时候如同有一个老师在身旁， 更加有底气。