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ganeti.config_unittest.py

#!/usr/bin/python
#

# Copyright (C) 2006, 2007 Google Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
# 02110-1301, USA.


"""Script for unittesting the config module"""


import unittest
import os
import time
import tempfile
import os.path
import socket

from ganeti import errors
from ganeti import constants
from ganeti import config
from ganeti import objects
from ganeti import utils


00039 class TestConfigRunner(unittest.TestCase):
  """Testing case for HooksRunner"""
  def setUp(self):
    fd, self.cfg_file = tempfile.mkstemp()
    os.close(fd)

  def tearDown(self):
    try:
      os.unlink(self.cfg_file)
    except OSError:
      pass

00051   def _get_object(self):
    """Returns a instance of ConfigWriter"""
    cfg = config.ConfigWriter(cfg_file=self.cfg_file, offline=True)
    return cfg

00056   def _init_cluster(self, cfg):
    """Initializes the cfg object"""
    cfg.InitConfig(utils.HostInfo().name, constants.LOCALHOST_IP_ADDRESS,
                   None, '', 'aa:00:00', 'xenvg',
                   constants.DEFAULT_BRIDGE)

00062   def _create_instance(self):
    """Create and return an instance object"""
    inst = objects.Instance(name="test.example.com", disks=[],
                            disk_template=constants.DT_DISKLESS)
    return inst

00068   def testEmpty(self):
    """Test instantiate config object"""
    self._get_object()

00072   def testInit(self):
    """Test initialize the config file"""
    cfg = self._get_object()
    self._init_cluster(cfg)
    self.failUnlessEqual(1, len(cfg.GetNodeList()))
    self.failUnlessEqual(0, len(cfg.GetInstanceList()))

00079   def testUpdateCluster(self):
    """Test updates on the cluster object"""
    cfg = self._get_object()
    # construct a fake cluster object
    fake_cl = objects.Cluster()
    # fail if we didn't read the config
    self.failUnlessRaises(errors.ProgrammerError, cfg.Update, fake_cl)

    self._init_cluster(cfg)
    cl = cfg.GetClusterInfo()
    # first pass, must not fail
    cfg.Update(cl)
    # second pass, also must not fail (after the config has been written)
    cfg.Update(cl)
    # but the fake_cl update should still fail
    self.failUnlessRaises(errors.ConfigurationError, cfg.Update, fake_cl)

00096   def testUpdateNode(self):
    """Test updates on one node object"""
    cfg = self._get_object()
    # construct a fake node
    fake_node = objects.Node()
    # fail if we didn't read the config
    self.failUnlessRaises(errors.ProgrammerError, cfg.Update, fake_node)

    self._init_cluster(cfg)
    node = cfg.GetNodeInfo(cfg.GetNodeList()[0])
    # first pass, must not fail
    cfg.Update(node)
    # second pass, also must not fail (after the config has been written)
    cfg.Update(node)
    # but the fake_node update should still fail
    self.failUnlessRaises(errors.ConfigurationError, cfg.Update, fake_node)

00113   def testUpdateInstance(self):
    """Test updates on one instance object"""
    cfg = self._get_object()
    # construct a fake instance
    inst = self._create_instance()
    fake_instance = objects.Instance()
    # fail if we didn't read the config
    self.failUnlessRaises(errors.ProgrammerError, cfg.Update, fake_instance)

    self._init_cluster(cfg)
    cfg.AddInstance(inst)
    instance = cfg.GetInstanceInfo(cfg.GetInstanceList()[0])
    # first pass, must not fail
    cfg.Update(instance)
    # second pass, also must not fail (after the config has been written)
    cfg.Update(instance)
    # but the fake_instance update should still fail
    self.failUnlessRaises(errors.ConfigurationError, cfg.Update, fake_instance)


if __name__ == '__main__':
  unittest.main()

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