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#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import pkgutil
import sys
import mock
import testtools
from heat.common import plugin_loader
import heat.engine
class PluginLoaderTest(testtools.TestCase):
def test_module_name(self):
self.assertEqual('foo.bar.blarg.wibble',
plugin_loader._module_name('foo.bar', 'blarg.wibble'))
def test_create_subpackage_single_path(self):
pkg_name = 'heat.engine.test_single_path'
self.assertNotIn(pkg_name, sys.modules)
pkg = plugin_loader.create_subpackage('/tmp',
'heat.engine',
'test_single_path')
self.assertIn(pkg_name, sys.modules)
self.assertEqual(sys.modules[pkg_name], pkg)
self.assertEqual(['/tmp'], pkg.__path__)
self.assertEqual(pkg_name, pkg.__name__)
def test_create_subpackage_path_list(self):
path_list = ['/tmp']
pkg_name = 'heat.engine.test_path_list'
self.assertNotIn(pkg_name, sys.modules)
pkg = plugin_loader.create_subpackage('/tmp',
'heat.engine',
'test_path_list')
self.assertIn(pkg_name, sys.modules)
self.assertEqual(sys.modules[pkg_name], pkg)
self.assertEqual(path_list, pkg.__path__)
self.assertNotIn(pkg.__path__, path_list)
self.assertEqual(pkg_name, pkg.__name__)
def test_import_module_existing(self):
import heat.engine.service
existing = heat.engine.service
importer = pkgutil.ImpImporter(heat.engine.__path__[0])
loaded = plugin_loader._import_module(importer,
'heat.engine.service',
heat.engine)
self.assertIs(existing, loaded)
def test_import_module_garbage(self):
importer = pkgutil.ImpImporter(heat.engine.__path__[0])
self.assertIsNone(plugin_loader._import_module(importer,
'wibble',
heat.engine))
@mock.patch.object(plugin_loader, "_import_module", mock.MagicMock())
@mock.patch('pkgutil.walk_packages')
def test_load_modules_skip_test(self, mp):
importer = pkgutil.ImpImporter(heat.engine.__path__[0])
mp.return_value = ((importer, "hola.foo", None),
(importer, "hola.tests.test_foo", None))
loaded = plugin_loader.load_modules(
heat.engine, ignore_error=True)
self.assertEqual(1, len(list(loaded)))
@mock.patch.object(plugin_loader, "_import_module", mock.MagicMock())
@mock.patch('pkgutil.walk_packages')
def test_load_modules_skip_setup(self, mp):
importer = pkgutil.ImpImporter(heat.engine.__path__[0])
mp.return_value = ((importer, "hola.foo", None),
(importer, "hola.setup", None))
loaded = plugin_loader.load_modules(
heat.engine, ignore_error=True)
self.assertEqual(1, len(list(loaded)))
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