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

Avoid calling the input transformer twice in the execution stack....

Avoid calling the input transformer twice in the execution stack. This should allow to register input transformers that have side effects, at least in Notebooks. Right now there are sill multiple calls which may happen in the terminal on execution requests.

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             test_importstring.py
        
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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')