upstream/ipython Files · IPython/kernel/tests/test_twistedutil.py

Added GTK support to ZeroMQ kernel....

Added GTK support to ZeroMQ kernel. We use an approach which is a combination of an gtk timer callback into our execution loop, like we do for Qt and Wx, I've run as tests several GTK examples found on the net, as well as multiple matplotlib scripts, and so far everything works as expected. The only catch is that we silently trap gtk.main_quit(), so examples that call it with a 'close' button or similar seem to not do anything. But their windows close normally and no other problems have been found. This solution uses code taken from an old bug report of ours: https://bugs.launchpad.net/ipython/+bug/270856 specifically the attachment in this comment: https://bugs.launchpad.net/ipython/+bug/270856/comments/6 along with the changes suggested by Michiel de Hoon there. Thanks to Ville and Michiel for that old discussion, which put me on the right track to figure out the details of the logic needed for GTK.

Brian Granger - - Load All Authors

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      #!/usr/bin/env python

      # encoding: utf-8

      #-----------------------------------------------------------------------------

      #  Copyright (C) 2008  The IPython Development Team

      #

      #  Distributed under the terms of the BSD License.  The full license is in

      #  the file COPYING, distributed as part of this software.

      #-----------------------------------------------------------------------------

      #-----------------------------------------------------------------------------

      # Imports

      #-----------------------------------------------------------------------------

      # Tell nose to skip this module

      __test__ = {}

      import tempfile

      import os, sys

      from twisted.internet import reactor

      from twisted.trial import unittest

      from IPython.kernel.error import FileTimeoutError

      from IPython.kernel.twistedutil import wait_for_file

      #-----------------------------------------------------------------------------

      # Tests

      #-----------------------------------------------------------------------------

      class TestWaitForFile(unittest.TestCase):

          def test_delay(self):

              filename = tempfile.mktemp()

              def _create_file():

                  open(filename,'w').write('####')

              dcall = reactor.callLater(0.5, _create_file)

              d = wait_for_file(filename,delay=0.1)

              d.addCallback(lambda r: self.assert_(r))

              def _cancel_dcall(r):

                  if dcall.active():

                      dcall.cancel()

              d.addCallback(_cancel_dcall)

              return d

          def test_timeout(self):

              filename = tempfile.mktemp()

              d = wait_for_file(filename,delay=0.1,max_tries=1)

              d.addErrback(lambda f: self.assertRaises(FileTimeoutError,f.raiseException))

              return d

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				#!/usr/bin/env python
				# encoding: utf-8

				#-----------------------------------------------------------------------------
				# Copyright (C) 2008 The IPython Development Team
				#
				# Distributed under the terms of the BSD License. The full license is in
				# the file COPYING, distributed as part of this software.
				#-----------------------------------------------------------------------------

				#-----------------------------------------------------------------------------
				# Imports
				#-----------------------------------------------------------------------------

				# Tell nose to skip this module
				__test__ = {}

				import tempfile
				import os, sys

				from twisted.internet import reactor
				from twisted.trial import unittest

				from IPython.kernel.error import FileTimeoutError
				from IPython.kernel.twistedutil import wait_for_file

				#-----------------------------------------------------------------------------
				# Tests
				#-----------------------------------------------------------------------------

				class TestWaitForFile(unittest.TestCase):

				def test_delay(self):
				filename = tempfile.mktemp()
				def _create_file():
				open(filename,'w').write('####')
				dcall = reactor.callLater(0.5, _create_file)
				d = wait_for_file(filename,delay=0.1)
				d.addCallback(lambda r: self.assert_(r))
				def _cancel_dcall(r):
				if dcall.active():
				dcall.cancel()
				d.addCallback(_cancel_dcall)
				return d

				def test_timeout(self):
				filename = tempfile.mktemp()
				d = wait_for_file(filename,delay=0.1,max_tries=1)
				d.addErrback(lambda f: self.assertRaises(FileTimeoutError,f.raiseException))
				return d