test_pwd.py 3.15 KB
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import unittest
from test import test_support

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import pwd

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class PwdTest(unittest.TestCase):

    def test_values(self):
        entries = pwd.getpwall()
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        entriesbyname = {}
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        entriesbyuid = {}
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        for e in entries:
            self.assertEqual(len(e), 7)
            self.assertEqual(e[0], e.pw_name)
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            self.assert_(isinstance(e.pw_name, str))
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            self.assertEqual(e[1], e.pw_passwd)
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            self.assert_(isinstance(e.pw_passwd, str))
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            self.assertEqual(e[2], e.pw_uid)
            self.assert_(isinstance(e.pw_uid, int))
            self.assertEqual(e[3], e.pw_gid)
            self.assert_(isinstance(e.pw_gid, int))
            self.assertEqual(e[4], e.pw_gecos)
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            self.assert_(isinstance(e.pw_gecos, str))
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            self.assertEqual(e[5], e.pw_dir)
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            self.assert_(isinstance(e.pw_dir, str))
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            self.assertEqual(e[6], e.pw_shell)
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            self.assert_(isinstance(e.pw_shell, str))
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            # The following won't work, because of duplicate entries
            # for one uid
            #    self.assertEqual(pwd.getpwuid(e.pw_uid), e)
            # instead of this collect all entries for one uid
            # and check afterwards
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            entriesbyname.setdefault(e.pw_name, []).append(e)
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            entriesbyuid.setdefault(e.pw_uid, []).append(e)

        # check whether the entry returned by getpwuid()
        # for each uid is among those from getpwall() for this uid
        for e in entries:
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            if not e[0] or e[0] == '+':
                continue # skip NIS entries etc.
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            self.assert_(pwd.getpwnam(e.pw_name) in entriesbyname[e.pw_name])
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            self.assert_(pwd.getpwuid(e.pw_uid) in entriesbyuid[e.pw_uid])
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    def test_errors(self):
        self.assertRaises(TypeError, pwd.getpwuid)
        self.assertRaises(TypeError, pwd.getpwnam)
        self.assertRaises(TypeError, pwd.getpwall, 42)

        # try to get some errors
        bynames = {}
        byuids = {}
        for (n, p, u, g, gecos, d, s) in pwd.getpwall():
            bynames[n] = u
            byuids[u] = n

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        allnames = list(bynames.keys())
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        namei = 0
        fakename = allnames[namei]
        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':
                    chars[i] = 'A'
                    break
                elif chars[i] == 'Z':
                    continue
                else:
                    chars[i] = chr(ord(chars[i]) + 1)
                    break
            else:
                namei = namei + 1
                try:
                    fakename = allnames[namei]
                except IndexError:
                    # should never happen... if so, just forget it
                    break
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            fakename = ''.join(chars)
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        self.assertRaises(KeyError, pwd.getpwnam, fakename)
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        # Choose a non-existent uid.
        fakeuid = 4127
        while fakeuid in byuids:
            fakeuid = (fakeuid * 3) % 0x10000
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        self.assertRaises(KeyError, pwd.getpwuid, fakeuid)
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def test_main():
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    test_support.run_unittest(PwdTest)
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if __name__ == "__main__":
    test_main()