Synnefo » snf-ganeti » ganeti-local

#!/usr/bin/python

#

# Copyright (C) 2011 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 testing ganeti.tools.ensure_dirs"""

import errno

import stat

import unittest

import os.path

from ganeti.tools import ensure_dirs

import testutils

class TestEnsureDirsFunctions(unittest.TestCase):

  def _NoopMkdir(self, _):

    self.mkdir_called = True

  @staticmethod

  def _MockStatResult(mode, pre_fn=lambda: 0):

    def _fn(path):

      pre_fn()

      return {stat.ST_MODE: mode}

    return _fn

  def _VerifyEnsure(self, path, mode, uid=-1, gid=-1):

    self.assertEqual(path, "/ganeti-qa-non-test")

    self.assertEqual(mode, 0700)

    self.assertEqual(uid, 0)

    self.assertEqual(gid, 0)

  @staticmethod

  def _RaiseNoEntError():

    noent_error = EnvironmentError()

    noent_error.errno = errno.ENOENT

    raise noent_error

  @staticmethod

  def _OtherStatRaise():

    raise EnvironmentError()

  def _ChmodWrapper(self, pre_fn=lambda: 0):

    def _fn(path, mode):

      self.chmod_called = True

      pre_fn()

    return _fn

  def _NoopChown(self, path, uid, gid):

    self.chown_called = True

  def testEnsureDir(self):

    is_dir_stat = self._MockStatResult(stat.S_IFDIR)

    not_dir_stat = self._MockStatResult(0)

    non_exist_stat = self._MockStatResult(stat.S_IFDIR,

                                          pre_fn=self._RaiseNoEntError)

    other_stat_raise = self._MockStatResult(stat.S_IFDIR,

                                            pre_fn=self._OtherStatRaise)

    self.assertRaises(ensure_dirs.EnsureError, ensure_dirs.EnsureDir,

                      "/ganeti-qa-non-test", 0700, 0, 0,

                      _stat_fn=not_dir_stat)

    self.assertRaises(ensure_dirs.EnsureError, ensure_dirs.EnsureDir,

                      "/ganeti-qa-non-test", 0700, 0, 0,

                      _stat_fn=other_stat_raise)

    self.mkdir_called = False

    ensure_dirs.EnsureDir("/ganeti-qa-non-test", 0700, 0, 0,

                          _stat_fn=non_exist_stat, _mkdir_fn=self._NoopMkdir,

                          _ensure_fn=self._VerifyEnsure)

    self.assertTrue(self.mkdir_called)

    self.mkdir_called = False

    ensure_dirs.EnsureDir("/ganeti-qa-non-test", 0700, 0, 0,

                          _stat_fn=is_dir_stat, _ensure_fn=self._VerifyEnsure)

    self.assertFalse(self.mkdir_called)

  def testEnsurePermission(self):

    noent_chmod_fn = self._ChmodWrapper(pre_fn=self._RaiseNoEntError)

    self.assertRaises(ensure_dirs.EnsureError, ensure_dirs.EnsurePermission,

                      "/ganeti-qa-non-test", 0600,

                      _chmod_fn=noent_chmod_fn)

    self.chmod_called = False

    ensure_dirs.EnsurePermission("/ganeti-qa-non-test", 0600, must_exist=False,

                                 _chmod_fn=noent_chmod_fn)

    self.assertTrue(self.chmod_called)

    self.assertRaises(ensure_dirs.EnsureError, ensure_dirs.EnsurePermission,

                      "/ganeti-qa-non-test", 0600, must_exist=False,

                      _chmod_fn=self._ChmodWrapper(pre_fn=self._OtherStatRaise))

    self.chmod_called = False

    self.chown_called = False

    ensure_dirs.EnsurePermission("/ganeti-qa-non-test", 0600,

                                 _chmod_fn=self._ChmodWrapper(),

                                 _chown_fn=self._NoopChown)

    self.assertTrue(self.chmod_called)

    self.assertFalse(self.chown_called)

    self.chmod_called = False

    ensure_dirs.EnsurePermission("/ganeti-qa-non-test", 0600, uid=1, gid=1,

                                 _chmod_fn=self._ChmodWrapper(),

                                 _chown_fn=self._NoopChown)

    self.assertTrue(self.chmod_called)

    self.assertTrue(self.chown_called)

  def testPaths(self):

    paths = [(path[0], path[1]) for path in ensure_dirs.GetPaths()]

    seen = []

    last_dirname = ""

    for path, pathtype in paths:

      self.assertTrue(pathtype in ensure_dirs.ALL_TYPES)

      dirname = os.path.dirname(path)

      if dirname != last_dirname or pathtype == ensure_dirs.DIR:

        if pathtype == ensure_dirs.FILE:

          self.assertFalse(dirname in seen,

                           msg="path %s; dirname %s seen in %s" % (path,

                                                                   dirname,

                                                                   seen))

          last_dirname = dirname

          seen.append(dirname)

        elif pathtype == ensure_dirs.DIR:

          self.assertFalse(path in seen)

          last_dirname = path

          seen.append(path)

if __name__ == "__main__":

  testutils.GanetiTestProgram()