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57 lines
2.1 KiB
Python
57 lines
2.1 KiB
Python
# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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"""Tests for failure loading callback
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"""
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from unittest import mock
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from testtools.matchers import GreaterThan
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from stevedore import extension
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from stevedore import named
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from stevedore.tests import utils
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class TestCallback(utils.TestCase):
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def test_extension_failure_custom_callback(self):
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errors = []
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def failure_callback(manager, entrypoint, error):
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errors.append((manager, entrypoint, error))
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em = extension.ExtensionManager('stevedore.test.extension',
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invoke_on_load=True,
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on_load_failure_callback=
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failure_callback)
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extensions = list(em.extensions)
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self.assertTrue(len(extensions), GreaterThan(0))
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self.assertEqual(len(errors), 2)
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for manager, entrypoint, error in errors:
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self.assertIs(manager, em)
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self.assertIsInstance(error, (IOError, ImportError))
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@mock.patch('stevedore.named.NamedExtensionManager._load_plugins')
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def test_missing_entrypoints_callback(self, load_fn):
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errors = set()
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def callback(names):
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errors.update(names)
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load_fn.return_value = [
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extension.Extension('foo', None, None, None)
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]
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named.NamedExtensionManager('stevedore.test.extension',
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names=['foo', 'bar'],
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invoke_on_load=True,
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on_missing_entrypoints_callback=callback)
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self.assertEqual(errors, {'bar'})
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