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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.
- """Tests for failure loading callback
- """
- from unittest import mock
- from testtools.matchers import GreaterThan
- from stevedore import extension
- from stevedore import named
- from stevedore.tests import utils
- class TestCallback(utils.TestCase):
- def test_extension_failure_custom_callback(self):
- errors = []
- def failure_callback(manager, entrypoint, error):
- errors.append((manager, entrypoint, error))
- em = extension.ExtensionManager('stevedore.test.extension',
- invoke_on_load=True,
- on_load_failure_callback=
- failure_callback)
- extensions = list(em.extensions)
- self.assertTrue(len(extensions), GreaterThan(0))
- self.assertEqual(len(errors), 2)
- for manager, entrypoint, error in errors:
- self.assertIs(manager, em)
- self.assertIsInstance(error, (IOError, ImportError))
- @mock.patch('stevedore.named.NamedExtensionManager._load_plugins')
- def test_missing_entrypoints_callback(self, load_fn):
- errors = set()
- def callback(names):
- errors.update(names)
- load_fn.return_value = [
- extension.Extension('foo', None, None, None)
- ]
- named.NamedExtensionManager('stevedore.test.extension',
- names=['foo', 'bar'],
- invoke_on_load=True,
- on_missing_entrypoints_callback=callback)
- self.assertEqual(errors, {'bar'})
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