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115 lines
4.3 KiB
Python
115 lines
4.3 KiB
Python
import sys
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import unittest
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from test.support import import_helper
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pwd = import_helper.import_module('pwd')
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@unittest.skipUnless(hasattr(pwd, 'getpwall'), 'Does not have getpwall()')
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class PwdTest(unittest.TestCase):
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def test_values(self):
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entries = pwd.getpwall()
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for e in entries:
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self.assertEqual(len(e), 7)
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self.assertEqual(e[0], e.pw_name)
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self.assertIsInstance(e.pw_name, str)
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self.assertEqual(e[1], e.pw_passwd)
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self.assertIsInstance(e.pw_passwd, str)
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self.assertEqual(e[2], e.pw_uid)
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self.assertIsInstance(e.pw_uid, int)
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self.assertEqual(e[3], e.pw_gid)
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self.assertIsInstance(e.pw_gid, int)
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self.assertEqual(e[4], e.pw_gecos)
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self.assertIn(type(e.pw_gecos), (str, type(None)))
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self.assertEqual(e[5], e.pw_dir)
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self.assertIsInstance(e.pw_dir, str)
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self.assertEqual(e[6], e.pw_shell)
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self.assertIsInstance(e.pw_shell, str)
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# The following won't work, because of duplicate entries
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# for one uid
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# self.assertEqual(pwd.getpwuid(e.pw_uid), e)
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# instead of this collect all entries for one uid
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# and check afterwards (done in test_values_extended)
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def test_values_extended(self):
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entries = pwd.getpwall()
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entriesbyname = {}
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entriesbyuid = {}
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if len(entries) > 1000: # Huge passwd file (NIS?) -- skip this test
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self.skipTest('passwd file is huge; extended test skipped')
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for e in entries:
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entriesbyname.setdefault(e.pw_name, []).append(e)
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entriesbyuid.setdefault(e.pw_uid, []).append(e)
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# check whether the entry returned by getpwuid()
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# for each uid is among those from getpwall() for this uid
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for e in entries:
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if not e[0] or e[0] == '+':
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continue # skip NIS entries etc.
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self.assertIn(pwd.getpwnam(e.pw_name), entriesbyname[e.pw_name])
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self.assertIn(pwd.getpwuid(e.pw_uid), entriesbyuid[e.pw_uid])
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def test_errors(self):
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self.assertRaises(TypeError, pwd.getpwuid)
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self.assertRaises(TypeError, pwd.getpwuid, 3.14)
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self.assertRaises(TypeError, pwd.getpwnam)
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self.assertRaises(TypeError, pwd.getpwnam, 42)
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self.assertRaises(TypeError, pwd.getpwall, 42)
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# embedded null character
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self.assertRaisesRegex(ValueError, 'null', pwd.getpwnam, 'a\x00b')
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# try to get some errors
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bynames = {}
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byuids = {}
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for (n, p, u, g, gecos, d, s) in pwd.getpwall():
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bynames[n] = u
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byuids[u] = n
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allnames = list(bynames.keys())
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namei = 0
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fakename = allnames[namei] if allnames else "invaliduser"
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while fakename in bynames:
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chars = list(fakename)
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for i in range(len(chars)):
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if chars[i] == 'z':
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chars[i] = 'A'
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break
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elif chars[i] == 'Z':
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continue
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else:
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chars[i] = chr(ord(chars[i]) + 1)
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break
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else:
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namei = namei + 1
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try:
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fakename = allnames[namei]
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except IndexError:
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# should never happen... if so, just forget it
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break
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fakename = ''.join(chars)
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self.assertRaises(KeyError, pwd.getpwnam, fakename)
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# In some cases, byuids isn't a complete list of all users in the
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# system, so if we try to pick a value not in byuids (via a perturbing
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# loop, say), pwd.getpwuid() might still be able to find data for that
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# uid. Using sys.maxint may provoke the same problems, but hopefully
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# it will be a more repeatable failure.
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fakeuid = sys.maxsize
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self.assertNotIn(fakeuid, byuids)
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self.assertRaises(KeyError, pwd.getpwuid, fakeuid)
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# -1 shouldn't be a valid uid because it has a special meaning in many
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# uid-related functions
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self.assertRaises(KeyError, pwd.getpwuid, -1)
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# should be out of uid_t range
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self.assertRaises(KeyError, pwd.getpwuid, 2**128)
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self.assertRaises(KeyError, pwd.getpwuid, -2**128)
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if __name__ == "__main__":
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unittest.main()
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