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#!/usr/bin/python
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#
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# Copyright (C) 2010 Google Inc.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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# General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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# 02110-1301, USA.
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"""Script for unittesting the daemon module"""
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import unittest
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import signal
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import os
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from ganeti import daemon
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import testutils
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class TestMainloop(testutils.GanetiTestCase):
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  """Test daemon.Mainloop"""
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  def setUp(self):
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    testutils.GanetiTestCase.setUp(self)
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    self.mainloop = daemon.Mainloop()
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    self.sendsig_events = []
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    self.onsignal_events = []
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  def _CancelEvent(self, handle):
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    self.mainloop.scheduler.cancel(handle)
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  def _SendSig(self, sig):
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    self.sendsig_events.append(sig)
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    os.kill(os.getpid(), sig)
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  def OnSignal(self, signum):
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    self.onsignal_events.append(signum)
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  def testRunAndTermBySched(self):
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    self.mainloop.scheduler.enter(0.1, 1, self._SendSig, [signal.SIGTERM])
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    self.mainloop.Run() # terminates by _SendSig being scheduled
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    self.assertEquals(self.sendsig_events, [signal.SIGTERM])
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  def testSchedulerCancel(self):
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    handle = self.mainloop.scheduler.enter(0.1, 1, self._SendSig,
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                                           [signal.SIGTERM])
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    self.mainloop.scheduler.cancel(handle)
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    self.mainloop.scheduler.enter(0.2, 1, self._SendSig, [signal.SIGCHLD])
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    self.mainloop.scheduler.enter(0.3, 1, self._SendSig, [signal.SIGTERM])
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    self.mainloop.Run()
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    self.assertEquals(self.sendsig_events, [signal.SIGCHLD, signal.SIGTERM])
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  def testRegisterSignal(self):
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    self.mainloop.RegisterSignal(self)
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    self.mainloop.scheduler.enter(0.1, 1, self._SendSig, [signal.SIGCHLD])
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    handle = self.mainloop.scheduler.enter(0.1, 1, self._SendSig,
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                                           [signal.SIGTERM])
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    self.mainloop.scheduler.cancel(handle)
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    self.mainloop.scheduler.enter(0.2, 1, self._SendSig, [signal.SIGCHLD])
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    self.mainloop.scheduler.enter(0.3, 1, self._SendSig, [signal.SIGTERM])
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    # ...not delievered because they are scheduled after TERM
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    self.mainloop.scheduler.enter(0.4, 1, self._SendSig, [signal.SIGCHLD])
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    self.mainloop.scheduler.enter(0.5, 1, self._SendSig, [signal.SIGCHLD])
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    self.mainloop.Run()
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    self.assertEquals(self.sendsig_events,
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                      [signal.SIGCHLD, signal.SIGCHLD, signal.SIGTERM])
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    self.assertEquals(self.onsignal_events, self.sendsig_events)
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  def testDeferredCancel(self):
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    self.mainloop.RegisterSignal(self)
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    self.mainloop.scheduler.enter(0.1, 1, self._SendSig, [signal.SIGCHLD])
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    handle1 = self.mainloop.scheduler.enter(0.3, 2, self._SendSig,
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                                           [signal.SIGCHLD])
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    handle2 = self.mainloop.scheduler.enter(0.4, 2, self._SendSig,
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                                           [signal.SIGCHLD])
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    self.mainloop.scheduler.enter(0, 1, self._CancelEvent, [handle1])
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    self.mainloop.scheduler.enter(0, 1, self._CancelEvent, [handle2])
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    self.mainloop.scheduler.enter(0.5, 1, self._SendSig, [signal.SIGTERM])
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    self.mainloop.Run()
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    self.assertEquals(self.sendsig_events, [signal.SIGCHLD, signal.SIGTERM])
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    self.assertEquals(self.onsignal_events, self.sendsig_events)
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if __name__ == "__main__":
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  testutils.GanetiTestProgram()