Synnefo » snf-ganeti

#!/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

def _MockStatResult(cb, mode, uid, gid):

  def _fn(path):

    if cb:

      cb()

    return {

      stat.ST_MODE: mode,

      stat.ST_UID: uid,

      stat.ST_GID: gid,

      }

  return _fn

def _RaiseNoEntError():

  raise EnvironmentError(errno.ENOENT, "not found")

def _OtherStatRaise():

  raise EnvironmentError()

class TestEnsureDirsFunctions(unittest.TestCase):

  UID_A = 16024

  UID_B = 25850

  GID_A = 14028

  GID_B = 29801

  def setUp(self):

    self._chown_calls = []

    self._chmod_calls = []

    self._mkdir_calls = []

  def tearDown(self):

    self.assertRaises(IndexError, self._mkdir_calls.pop)

    self.assertRaises(IndexError, self._chmod_calls.pop)

    self.assertRaises(IndexError, self._chown_calls.pop)

  def _FakeMkdir(self, path):

    self._mkdir_calls.append(path)

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

    self._chown_calls.append((path, uid, gid))

  def _ChmodWrapper(self, cb):

    def _fn(path, mode):

      self._chmod_calls.append((path, mode))

      if cb:

        cb()

    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, self.UID_A)

    self.assertEqual(gid, self.GID_A)

  def testEnsureDir(self):

    is_dir_stat = _MockStatResult(None, stat.S_IFDIR, 0, 0)

    ensure_dirs.EnsureDir("/ganeti-qa-non-test", 0700, self.UID_A, self.GID_A,

                          _lstat_fn=is_dir_stat, _ensure_fn=self._VerifyEnsure)

  def testEnsureDirErrors(self):

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

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

                      _lstat_fn=_MockStatResult(None, 0, 0, 0))

    self.assertRaises(IndexError, self._mkdir_calls.pop)

    other_stat_raise = _MockStatResult(_OtherStatRaise, stat.S_IFDIR, 0, 0)

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

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

                      _lstat_fn=other_stat_raise)

    self.assertRaises(IndexError, self._mkdir_calls.pop)

    non_exist_stat = _MockStatResult(_RaiseNoEntError, stat.S_IFDIR, 0, 0)

    ensure_dirs.EnsureDir("/ganeti-qa-non-test", 0700, self.UID_A, self.GID_A,

                          _lstat_fn=non_exist_stat, _mkdir_fn=self._FakeMkdir,

                          _ensure_fn=self._VerifyEnsure)

    self.assertEqual(self._mkdir_calls.pop(0), "/ganeti-qa-non-test")

  def testEnsurePermissionNoEnt(self):

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

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

                      _chmod_fn=NotImplemented, _chown_fn=NotImplemented,

                      _stat_fn=_MockStatResult(_RaiseNoEntError, 0, 0, 0))

  def testEnsurePermissionNoEntMustNotExist(self):

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

                                 _chmod_fn=NotImplemented,

                                 _chown_fn=NotImplemented,

                                 _stat_fn=_MockStatResult(_RaiseNoEntError,

                                                          0, 0, 0))

  def testEnsurePermissionOtherErrorMustNotExist(self):

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

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

                      _chmod_fn=NotImplemented, _chown_fn=NotImplemented,

                      _stat_fn=_MockStatResult(_OtherStatRaise, 0, 0, 0))

  def testEnsurePermissionNoChanges(self):

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

                                 _stat_fn=_MockStatResult(None, 0600, 0, 0),

                                 _chmod_fn=self._ChmodWrapper(None),

                                 _chown_fn=self._FakeChown)

  def testEnsurePermissionChangeMode(self):

    ensure_dirs.EnsurePermission("/ganeti-qa-non-test", 0444,

                                 _stat_fn=_MockStatResult(None, 0600, 0, 0),

                                 _chmod_fn=self._ChmodWrapper(None),

                                 _chown_fn=self._FakeChown)

    self.assertEqual(self._chmod_calls.pop(0), ("/ganeti-qa-non-test", 0444))

  def testEnsurePermissionSetUidGid(self):

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

                                 uid=self.UID_B, gid=self.GID_B,

                                 _stat_fn=_MockStatResult(None, 0600,

                                                          self.UID_A,

                                                          self.GID_A),

                                 _chmod_fn=self._ChmodWrapper(None),

                                 _chown_fn=self._FakeChown)

    self.assertEqual(self._chown_calls.pop(0),

                     ("/ganeti-qa-non-test", self.UID_B, self.GID_B))

  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()