Lib/test/test_pwd.py

   1 import unittest
   2 from test import test_support
   3
   4 pwd = test_support.import_module('pwd')
   5
   6 class PwdTest(unittest.TestCase):
   7
   8     def test_values(self):
   9         entries = pwd.getpwall()
  10         entriesbyname = {}
  11         entriesbyuid = {}
  12
  13         for e in entries:
  14             self.assertEqual(len(e), 7)
  15             self.assertEqual(e[0], e.pw_name)
  16             self.assertTrue(isinstance(e.pw_name, basestring))
  17             self.assertEqual(e[1], e.pw_passwd)
  18             self.assertTrue(isinstance(e.pw_passwd, basestring))
  19             self.assertEqual(e[2], e.pw_uid)
  20             self.assertTrue(isinstance(e.pw_uid, int))
  21             self.assertEqual(e[3], e.pw_gid)
  22             self.assertTrue(isinstance(e.pw_gid, int))
  23             self.assertEqual(e[4], e.pw_gecos)
  24             self.assertTrue(isinstance(e.pw_gecos, basestring))
  25             self.assertEqual(e[5], e.pw_dir)
  26             self.assertTrue(isinstance(e.pw_dir, basestring))
  27             self.assertEqual(e[6], e.pw_shell)
  28             self.assertTrue(isinstance(e.pw_shell, basestring))
  29
  30             # The following won't work, because of duplicate entries
  31             # for one uid
  32             #    self.assertEqual(pwd.getpwuid(e.pw_uid), e)
  33             # instead of this collect all entries for one uid
  34             # and check afterwards
  35             entriesbyname.setdefault(e.pw_name, []).append(e)
  36             entriesbyuid.setdefault(e.pw_uid, []).append(e)
  37
  38         if len(entries) > 1000:  # Huge passwd file (NIS?) -- skip the rest
  39             return
  40
  41         # check whether the entry returned by getpwuid()
  42         # for each uid is among those from getpwall() for this uid
  43         for e in entries:
  44             if not e[0] or e[0] == '+':
  45                 continue # skip NIS entries etc.
  46             self.assertTrue(pwd.getpwnam(e.pw_name) in entriesbyname[e.pw_name])
  47             self.assertTrue(pwd.getpwuid(e.pw_uid) in entriesbyuid[e.pw_uid])
  48
  49     def test_errors(self):
  50         self.assertRaises(TypeError, pwd.getpwuid)
  51         self.assertRaises(TypeError, pwd.getpwnam)
  52         self.assertRaises(TypeError, pwd.getpwall, 42)
  53
  54         # try to get some errors
  55         bynames = {}
  56         byuids = {}
  57         for (n, p, u, g, gecos, d, s) in pwd.getpwall():
  58             bynames[n] = u
  59             byuids[u] = n
  60
  61         allnames = bynames.keys()
  62         namei = 0
  63         fakename = allnames[namei]
  64         while fakename in bynames:
  65             chars = list(fakename)
  66             for i in xrange(len(chars)):
  67                 if chars[i] == 'z':
  68                     chars[i] = 'A'
  69                     break
  70                 elif chars[i] == 'Z':
  71                     continue
  72                 else:
  73                     chars[i] = chr(ord(chars[i]) + 1)
  74                     break
  75             else:
  76                 namei = namei + 1
  77                 try:
  78                     fakename = allnames[namei]
  79                 except IndexError:
  80                     # should never happen... if so, just forget it
  81                     break
  82             fakename = ''.join(chars)
  83
  84         self.assertRaises(KeyError, pwd.getpwnam, fakename)
  85
  86         # Choose a non-existent uid.
  87         fakeuid = 4127
  88         while fakeuid in byuids:
  89             fakeuid = (fakeuid * 3) % 0x10000
  90
  91         self.assertRaises(KeyError, pwd.getpwuid, fakeuid)
  92
  93 def test_main():
  94     test_support.run_unittest(PwdTest)
  95
  96 if __name__ == "__main__":
  97     test_main()