求救，unittest无法执行，Ran 0 tests in 0.000s

kkmm0105

按照网上了一篇文章写了unittest程序，运行结果：
Ran 0 tests in 0.000s     为啥是0 test呢？ 代码如下：

主函数main.py

1. import re
   
2. import os
   
3. import sys
   
4. import unittest
   
5. 
   
6. 
   
7. def test_all_in_current():
   
8.     files = os.listdir("./lib/workers/ut/")
   
9.     test = re.compile("test.*\.py$", re.IGNORECASE)
   
10.     case_files = filter(test.search, files)
    
11. 
    
12.     filename_to_modulename = lambda f: "workers.ut." + os.path.splitext(f)[0]
    
13.     module_names = map(filename_to_modulename, case_files)
    
14.     modules = map(__import__, module_names)
    
15. 
    
16.     load = unittest.defaultTestLoader.loadTestsFromModule
    
17.     return unittest.TestSuite(map(load, modules))
    
18. 
    
19. if __name__ == "__main__":
    
20.     libpath = "./lib/"
    
21.     sys.path.insert(0, libpath)
    
22.     unittest.main(defaultTest="test_all_in_current")

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测试类TestCar.py，位于./lib/workers/ut/

1. class TestCar(unittest.TestCase):
   
2.    
   
3.     def setUp(self):
   
4.         print 'sdfsdf'
   
5. 
   
6.     def tearDown(self):
   
7.         pass
   
8. 
   
9.     def test_opendoor(self):
   
10.         print 'open'

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从debug信息上看，__import__函数已经成功了，那问题出在哪呢

wangst321

__import__的问题。

应该这样：
import functools
modules = map(functools.partial(__import__, fromlist=[None,]), modules_names)

查看官方文档
https://docs.python.org/2/library/functions.html#__import__

__import__(name[, globals[, locals[, fromlist[, level]]]])
When the name variable is of the form package.module, normally, the top-level package (the name up till the first dot) is returned, not the module named by name.
However, when a non-empty fromlist argument is given, the module named by name is returned.