Lib/test/test_pwd.py

   1 import unittest
   2 from test import test_support
   3
   4 import 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.assert_(isinstance(e.pw_name, basestring))
  17             self.assertEqual(e[1], e.pw_passwd)
  18             self.assert_(isinstance(e.pw_passwd, basestring))
  19             self.assertEqual(e[2], e.pw_uid)
  20             self.assert_(isinstance(e.pw_uid, int))
  21             self.assertEqual(e[3], e.pw_gid)
  22             self.assert_(isinstance(e.pw_gid, int))
  23             self.assertEqual(e[4], e.pw_gecos)
  24             self.assert_(isinstance(e.pw_gecos, basestring))
  25             self.assertEqual(e[5], e.pw_dir)
  26             self.assert_(isinstance(e.pw_dir, basestring))
  27             self.assertEqual(e[6], e.pw_shell)
  28             self.assert_(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         # check whether the entry returned by getpwuid()
  39         # for each uid is among those from getpwall() for this uid
  40         for e in entries:
  41             if not e[0] or e[0] == '+':
  42                 continue # skip NIS entries etc.
  43             self.assert_(pwd.getpwnam(e.pw_name) in entriesbyname[e.pw_name])
  44             self.assert_(pwd.getpwuid(e.pw_uid) in entriesbyuid[e.pw_uid])
  45
  46     def test_errors(self):
  47         self.assertRaises(TypeError, pwd.getpwuid)
  48         self.assertRaises(TypeError, pwd.getpwnam)
  49         self.assertRaises(TypeError, pwd.getpwall, 42)
  50
  51         # try to get some errors
  52         bynames = {}
  53         byuids = {}
  54         for (n, p, u, g, gecos, d, s) in pwd.getpwall():
  55             bynames[n] = u
  56             byuids[u] = n
  57
  58         allnames = bynames.keys()
  59         namei = 0
  60         fakename = allnames[namei]
  61         while fakename in bynames:
  62             chars = map(None, fakename)
  63             for i in xrange(len(chars)):
  64                 if chars[i] == 'z':
  65                     chars[i] = 'A'
  66                     break
  67                 elif chars[i] == 'Z':
  68                     continue
  69                 else:
  70                     chars[i] = chr(ord(chars[i]) + 1)
  71                     break
  72             else:
  73                 namei = namei + 1
  74                 try:
  75                     fakename = allnames[namei]
  76                 except IndexError:
  77                     # should never happen... if so, just forget it
  78                     break
  79             fakename = ''.join(map(None, chars))
  80
  81         self.assertRaises(KeyError, pwd.getpwnam, fakename)
  82
  83         # Choose a non-existent uid.
  84         fakeuid = 4127
  85         while fakeuid in byuids:
  86             fakeuid = (fakeuid * 3) % 0x10000
  87
  88         self.assertRaises(KeyError, pwd.getpwuid, fakeuid)
  89
  90 def test_main():
  91     test_support.run_unittest(PwdTest)
  92
  93 if __name__ == "__main__":
  94     test_main()