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

get rid of most slowdown at notebook loading....

get rid of most slowdown at notebook loading. 1) Do not setOption('mode',new_mode) on CM if new and old mode are the same. It triggert **a lot** of calculation of bounding box in the end. 2) Do **not** select cell when loading the notebook it triggers **a lot** of CM even that check visible things and so on and so forth. So add a option to add_cell_at_index not to select it 3) jQuery $.attr has some magics, but has a slight overhead on real native ELEM.setAttribute DOM method. Seem slight improvement when loads of PNGs on one page

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      """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')

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				"""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')