# (C) Copyright 2007-2019 Enthought, Inc., Austin, TX
# All rights reserved.
#
# This software is provided without warranty under the terms of the BSD
# license included in LICENSE.txt and may be redistributed only
# under the conditions described in the aforementioned license.  The license
# is also available online at http://www.enthought.com/licenses/BSD.txt
# Thanks for using Enthought open source!
""" Tests for the import manager. """


# Enthought library imports.
from envisage.api import Application, ImportManager
from traits.testing.unittest_tools import unittest


class ImportManagerTestCase(unittest.TestCase):
    """ Tests for the import manager. """

    def setUp(self):
        """ Prepares the test fixture before each test method is called. """

        # We do all of the testing via the application to make sure it offers
        # the same interface!
        self.import_manager = Application(import_manager=ImportManager())

    def test_import_dotted_symbol(self):
        """ import dotted symbol """

        import tarfile

        symbol = self.import_manager.import_symbol('tarfile.TarFile')
        self.assertEqual(symbol, tarfile.TarFile)

    def test_import_nested_symbol(self):
        """ import nested symbol """

        import tarfile

        symbol = self.import_manager.import_symbol('tarfile:TarFile.open')
        self.assertEqual(symbol, tarfile.TarFile.open)

    def test_import_dotted_module(self):
        """ import dotted module """

        symbol = self.import_manager.import_symbol(
            'envisage.api:ImportManager'
        )
        self.assertEqual(symbol, ImportManager)
