1  """Tests for IPython.utils.importstring."""
   2  
   3  #-----------------------------------------------------------------------------
   4  #  Copyright (C) 2013  The IPython Development Team
   5  #
   6  #  Distributed under the terms of the BSD License.  The full license is in
   7  #  the file COPYING, distributed as part of this software.
   8  #-----------------------------------------------------------------------------
   9  
  10  #-----------------------------------------------------------------------------
  11  # Imports
  12  #-----------------------------------------------------------------------------
  13  
  14  import pytest
  15  
  16  from IPython.utils.importstring import import_item
  17  
  18  #-----------------------------------------------------------------------------
  19  # Tests
  20  #-----------------------------------------------------------------------------
  21  
  22  def test_import_plain():
  23      "Test simple imports"
  24      import os
  25  
  26      os2 = import_item("os")
  27      assert os is os2
  28  
  29  
  30  def test_import_nested():
  31      "Test nested imports from the stdlib"
  32      from os import path
  33  
  34      path2 = import_item("os.path")
  35      assert path is path2
  36  
  37  
  38  def test_import_raises():
  39      "Test that failing imports raise the right exception"
  40      pytest.raises(ImportError, import_item, "IPython.foobar")
  41