upstream/ipython Files · IPython/utils/tests/test_importstring.py

Prevent qtconsole frontend freeze on lots of output....

Prevent qtconsole frontend freeze on lots of output. The output from the kernel is now clipped to last `buffer_size` before displaying and a timer is used to flush the pending output text instead of attempting to display text on every stream output from kernel. The timer interval is adjusted based on actual time taken to append a screenful of text to widget. This throttles the widget repaints and avoids choking the Qt event loop leaving time to handle other Qt events. Test cases: In [1]: for i in xrange(1000000): print i In [2]: range(100000) Without this commit the first input causes the qtconsole frontend to freeze, not responding to `Ctrl+C`.

MinRK - - Load All Authors

File last commit:

r11031:ffddf45f


                r11519:c7a90e39

Download file

             test_importstring.py
        
                    39 lines
            
             | 1.2 KiB
            
                | text/x-python
            
             |
                PythonLexer
            
             / IPython / utils / tests / test_importstring.py
          
                    History
                
                 |
                  Annotation
                 | Raw
                 |Copy content
                 |Copy permalink

      """Tests for IPython.utils.importstring."""

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

      #  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

      from IPython.utils.importstring import import_item

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

      # Tests

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

      def test_import_plain():

          "Test simple imports"

          import os

          os2 = import_item('os')

          nt.assert_true(os is os2)

      def test_import_nested():

          "Test nested imports from the stdlib"

          from os import path

          path2 = import_item('os.path')

          nt.assert_true(path is path2)

      def test_import_raises():

          "Test that failing imports raise the right exception"

          nt.assert_raises(ImportError, import_item, 'IPython.foobar')

	Site-wide shortcuts
/	Use quick search box
g h	Goto home page
g g	Goto my private gists page
g G	Goto my public gists page
g 0-9	Goto bookmarked items from 0-9
n r	New repository page
n g	New gist page

	Repositories
g s	Goto summary page
g c	Goto changelog page
g f	Goto files page
g F	Goto files page with file search activated
g p	Goto pull requests page
g o	Goto repository settings
g O	Goto repository access permissions settings
t s	Toggle sidebar on some pages

				"""Tests for IPython.utils.importstring."""

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

				from IPython.utils.importstring import import_item

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

				def test_import_plain():
				"Test simple imports"
				import os
				os2 = import_item('os')
				nt.assert_true(os is os2)


				def test_import_nested():
				"Test nested imports from the stdlib"
				from os import path
				path2 = import_item('os.path')
				nt.assert_true(path is path2)


				def test_import_raises():
				"Test that failing imports raise the right exception"
				nt.assert_raises(ImportError, import_item, 'IPython.foobar')