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Python Source  |  2011-02-15  |  3.3 KB  |  98 lines
  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.         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.assert_(pwd.getpwnam(e.pw_name) in entriesbyname[e.pw_name])
  47.             self.assert_(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()
  98.