Synnefo » snf-ganeti » ganeti-local

#!/usr/bin/python

#

# Copyright (C) 2009, 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 unittesting the mcpu module"""

import unittest

from ganeti import mcpu

from ganeti import opcodes

from ganeti.constants import \

    LOCK_ATTEMPTS_TIMEOUT, \

    LOCK_ATTEMPTS_MAXWAIT, \

    LOCK_ATTEMPTS_MINWAIT

import testutils

class TestLockAttemptTimeoutStrategy(unittest.TestCase):

  def testConstants(self):

    tpa = mcpu.LockAttemptTimeoutStrategy._TIMEOUT_PER_ATTEMPT

    self.assert_(len(tpa) > LOCK_ATTEMPTS_TIMEOUT / LOCK_ATTEMPTS_MAXWAIT)

    self.assert_(sum(tpa) >= LOCK_ATTEMPTS_TIMEOUT)

    self.assertTrue(LOCK_ATTEMPTS_TIMEOUT >= 1800,

                    msg="Waiting less than half an hour per priority")

    self.assertTrue(LOCK_ATTEMPTS_TIMEOUT <= 3600,

                    msg="Waiting more than an hour per priority")

  def testSimple(self):

    strat = mcpu.LockAttemptTimeoutStrategy(_random_fn=lambda: 0.5,

                                            _time_fn=lambda: 0.0)

    prev = None

    for i in range(len(strat._TIMEOUT_PER_ATTEMPT)):

      timeout = strat.NextAttempt()

      self.assert_(timeout is not None)

      self.assert_(timeout <= LOCK_ATTEMPTS_MAXWAIT)

      self.assert_(timeout >= LOCK_ATTEMPTS_MINWAIT)

      self.assert_(prev is None or timeout >= prev)

      prev = timeout

    for _ in range(10):

      self.assert_(strat.NextAttempt() is None)

class TestDispatchTable(unittest.TestCase):

  def test(self):

    for opcls in opcodes.OP_MAPPING.values():

      if not opcls.WITH_LU:

        continue

      self.assertTrue(opcls in mcpu.Processor.DISPATCH_TABLE,

                      msg="%s missing handler class" % opcls)

if __name__ == "__main__":

  testutils.GanetiTestProgram()