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

# Copyright (c) IPython Development Team.
# Distributed under the terms of the Modified BSD License.

import pytest

from ..importstring import import_item

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


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


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