import unittest
from ctypes import*
import _ctypes_test
class S(unittest.TestCase):
 def test(self):
        s="\0"
        dll=CDLL(_ctypes_test.__file__)
        dll.my_wcsdup.restype=POINTER(c_wchar)
        res=dll.my_wcsdup(s)
        self.assertEqual(res[len(s)-0:-5:-1][1])
if __name__=="__main__":unittest.main()