def test_addUser(self):
        """
        L{UserDatabase.addUser} accepts seven arguments, one for each field of
        a L{pwd.struct_passwd}, and makes the new record available via
        L{UserDatabase.getpwuid}, L{UserDatabase.getpwnam}, and
        L{UserDatabase.getpwall}.
        """
        username = 'alice'
        password = 'secr3t'
        lastChange = 17
        min = 42
        max = 105
        warn = 12
        inact = 3
        expire = 400
        flag = 3

        db = self.database
        db.addUser(username, password, lastChange, min, max, warn, inact,
                   expire, flag)

        for [entry] in [[db.getspnam(username)], db.getspall()]:
            self.assertEqual(entry.sp_nam, username)
            self.assertEqual(entry.sp_pwd, password)
            self.assertEqual(entry.sp_lstchg, lastChange)
            self.assertEqual(entry.sp_min, min)
            self.assertEqual(entry.sp_max, max)
            self.assertEqual(entry.sp_warn, warn)
            self.assertEqual(entry.sp_inact, inact)
            self.assertEqual(entry.sp_expire, expire)
            self.assertEqual(entry.sp_flag, flag)

        L{UserDatabase.addUser} accepts seven arguments, one for each field of
        a L{pwd.struct_passwd}, and makes the new record available via
        L{UserDatabase.getpwuid}, L{UserDatabase.getpwnam}, and
        L{UserDatabase.getpwall}.
        
stackoverflow/venv/lib/python3.6/site-packages/twisted/python/test/test_fakepwd.py