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5436.2.1
by Andrew Bennetts
Add bzrlib.pyutils, which has get_named_object, a wrapper around __import__. |
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# Copyright (C) 2010 Canonical Ltd
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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"""Tests for bzrlib.pyutils."""
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from bzrlib import ( |
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branch, |
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tests, |
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)
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from bzrlib.pyutils import ( |
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calc_parent_name, |
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get_named_object, |
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)
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class TestGetNamedObject(tests.TestCase): |
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"""Tests for get_named_object."""
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def test_module_only(self): |
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import sys |
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self.assertIs(sys, get_named_object('sys')) |
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def test_dotted_module(self): |
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self.assertIs(branch, get_named_object('bzrlib.branch')) |
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def test_module_attr(self): |
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self.assertIs( |
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branch.Branch, get_named_object('bzrlib.branch', 'Branch')) |
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def test_dotted_attr(self): |
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self.assertIs( |
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branch.Branch.hooks, |
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get_named_object('bzrlib.branch', 'Branch.hooks')) |
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def test_package(self): |
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# bzrlib.tests is a package, not simply a module
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self.assertIs(tests, get_named_object('bzrlib.tests')) |
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def test_package_attr(self): |
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# bzrlib.tests is a package, not simply a module
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self.assertIs( |
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tests.TestCase, get_named_object('bzrlib.tests', 'TestCase')) |
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def test_import_error(self): |
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self.assertRaises(ImportError, get_named_object, 'NO_SUCH_MODULE') |
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def test_attribute_error(self): |
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self.assertRaises( |
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AttributeError, get_named_object, 'sys', 'NO_SUCH_ATTR') |
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class TestCalcParent_name(tests.TestCase): |
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"""Tests for calc_parent_name."""
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def test_dotted_member(self): |
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self.assertEqual( |
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('mod_name', 'attr1', 'attr2'), |
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calc_parent_name('mod_name', 'attr1.attr2')) |
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def test_undotted_member(self): |
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self.assertEqual( |
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('mod_name', None, 'attr1'), |
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calc_parent_name('mod_name', 'attr1')) |
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def test_dotted_module_no_member(self): |
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self.assertEqual( |
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('mod', None, 'sub_mod'), |
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calc_parent_name('mod.sub_mod')) |
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def test_undotted_module_no_member(self): |
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err = self.assertRaises(AssertionError, calc_parent_name, 'mod_name') |
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self.assertEqual( |
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"No parent object for top-level module 'mod_name'", err.args[0]) |
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