Python单元测试不起作用

Question

我开始学习 TDD。我刚刚开始从 python 进行单元测试。当我尝试执行时：

vagrant@vagrant:~/pruebaTestPython$ python test_python_daily_software.py 

----------------------------------------------------------------------
Ran 0 tests in 0.000s

OK

我在其他links 中读到我需要在开头使用test_ 重命名我自己的函数。但是，这正是我所做的，但它仍然不起作用。

test_python_daily_software.py 文件：

#!/usr/bin/python
# -*- coding: utf-8 -*-

import unittest
import python_daily

class TestPythonSoftware(unittest.TestCase):

    def test_should_return_python_when_number_is_3(self):
        self.assertEqual('Python', python_daily.get_string(3))

    def test_should_return_daily_when_number_is_5(self):
        self.assertEqual('Daily', python_daily.get_string(5))

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

和 python_daily.py 文件：

#!/usr/bin/python
# -*- coding: utf-8 -*-

def get_string(number):
    return 'Hello'

怎么了？

Answer 1

如果您的python_daily.py Python 模块是：

#!/usr/bin/python
# -*- coding: utf-8 -*-


def get_string(number):
    return 'Hello'

你的test_python_daily_software.py 测试模块是：

#!/usr/bin/python
# -*- coding: utf-8 -*-

import unittest

import python_daily


class TestPythonSoftware(unittest.TestCase):
    def test_should_return_python_when_number_is_3(self):
        self.assertEqual('Python', python_daily.get_string(3))

    def test_should_return_daily_when_number_is_5(self):
        self.assertEqual('Daily', python_daily.get_string(5))


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

你应该有：

$ python test_python_daily_software.py 
FF
======================================================================
FAIL: test_should_return_daily_when_number_is_5 (__main__.TestPythonSoftware)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "test_python_daily_software.py", line 11, in test_should_return_daily_when_number_is_5
    self.assertEqual('Daily', python_daily.get_string(5))
AssertionError: 'Daily' != 'Hello'

======================================================================
FAIL: test_should_return_python_when_number_is_3 (__main__.TestPythonSoftware)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "test_python_daily_software.py", line 8, in test_should_return_python_when_number_is_3
    self.assertEqual('Python', python_daily.get_string(3))
AssertionError: 'Python' != 'Hello'

----------------------------------------------------------------------
Ran 2 tests in 0.000s

FAILED (failures=2)

注意源代码中的缩进！