upstream/ipython Files · IPython/qt/console/tests/test_app.py

Handle kernel messages synchronously...

Handle kernel messages synchronously A problem can happen when two messages come in for different comms, where the second depends on the first (for example, the first might be a message setting the state of a widget, and the second triggering a view creation for the widget). Since comm message queues are independent of each other, the second message could be executed before the first message. This exposes a more fundamental assumption users are likely to have that messages from python are processed synchronously. Thanks to @dmadeka for reporting an error that led to discovering this issue.

Thomas Kluyver - - Load All Authors

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      """Test QtConsoleApp"""

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

      #  Copyright (C) 2013 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

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

      import nose.tools as nt

      import IPython.testing.tools as tt

      from IPython.testing.decorators import skip_if_no_x11

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

      # Test functions

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

      @skip_if_no_x11

      def test_help_output():

          """ipython qtconsole --help-all works"""

          tt.help_all_output_test('qtconsole')

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				"""Test QtConsoleApp"""

				#-----------------------------------------------------------------------------
				# Copyright (C) 2013 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
				#-----------------------------------------------------------------------------

				import nose.tools as nt

				import IPython.testing.tools as tt
				from IPython.testing.decorators import skip_if_no_x11

				#-----------------------------------------------------------------------------
				# Test functions
				#-----------------------------------------------------------------------------

				@skip_if_no_x11
				def test_help_output():
				"""ipython qtconsole --help-all works"""
				tt.help_all_output_test('qtconsole')