5c6a1d4081
Wrap the loading of the engine into a not found exception to match the usage in other entrypoints. This makes the usage of the various entrypoint loading functions more consistent. Change-Id: Id86f7b716c9b3dd76aba411529d2e647ad93a120
133 lines
4.9 KiB
Python
133 lines
4.9 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright (C) 2013 Yahoo! Inc. All Rights Reserved.
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#
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# 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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import mock
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from taskflow import exceptions as exc
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from taskflow.patterns import linear_flow
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from taskflow import test
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from taskflow.tests import utils as test_utils
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from taskflow.utils import persistence_utils as p_utils
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import taskflow.engines
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class EngineLoadingTestCase(test.TestCase):
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def test_default_load(self):
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f = linear_flow.Flow('test')
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f.add(test_utils.TaskOneReturn("run-1"))
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e = taskflow.engines.load(f)
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self.assertIsNotNone(e)
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def test_unknown_load(self):
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f = linear_flow.Flow('test')
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f.add(test_utils.TaskOneReturn("run-1"))
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self.assertRaises(exc.NotFound, taskflow.engines.load, f,
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engine_conf='not_really_any_engine')
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class FlowFromDetailTestCase(test.TestCase):
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def test_no_meta(self):
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_lb, flow_detail = p_utils.temporary_flow_detail()
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self.assertEqual({}, flow_detail.meta)
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self.assertRaisesRegexp(ValueError,
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'^Cannot .* no factory information saved.$',
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taskflow.engines.flow_from_detail,
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flow_detail)
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def test_no_factory_in_meta(self):
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_lb, flow_detail = p_utils.temporary_flow_detail()
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self.assertRaisesRegexp(ValueError,
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'^Cannot .* no factory information saved.$',
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taskflow.engines.flow_from_detail,
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flow_detail)
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def test_no_importable_function(self):
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_lb, flow_detail = p_utils.temporary_flow_detail()
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flow_detail.meta = dict(factory=dict(
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name='you can not import me, i contain spaces'
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))
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self.assertRaisesRegexp(ImportError,
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'^Could not import factory',
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taskflow.engines.flow_from_detail,
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flow_detail)
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def test_no_arg_factory(self):
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name = 'some.test.factory'
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_lb, flow_detail = p_utils.temporary_flow_detail()
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flow_detail.meta = dict(factory=dict(name=name))
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with mock.patch('taskflow.openstack.common.importutils.import_class',
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return_value=lambda: 'RESULT') as mock_import:
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result = taskflow.engines.flow_from_detail(flow_detail)
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mock_import.assert_called_onec_with(name)
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self.assertEqual(result, 'RESULT')
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def test_factory_with_arg(self):
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name = 'some.test.factory'
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_lb, flow_detail = p_utils.temporary_flow_detail()
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flow_detail.meta = dict(factory=dict(name=name, args=['foo']))
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with mock.patch('taskflow.openstack.common.importutils.import_class',
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return_value=lambda x: 'RESULT %s' % x) as mock_import:
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result = taskflow.engines.flow_from_detail(flow_detail)
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mock_import.assert_called_onec_with(name)
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self.assertEqual(result, 'RESULT foo')
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def my_flow_factory(task_name):
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return test_utils.DummyTask(name=task_name)
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class LoadFromFactoryTestCase(test.TestCase):
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def test_non_reimportable(self):
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def factory():
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pass
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self.assertRaisesRegexp(ValueError,
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'Flow factory .* is not reimportable',
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taskflow.engines.load_from_factory,
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factory)
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def test_it_works(self):
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engine = taskflow.engines.load_from_factory(
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my_flow_factory, factory_kwargs={'task_name': 'test1'})
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self.assertIsInstance(engine._flow, test_utils.DummyTask)
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fd = engine.storage._flowdetail
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self.assertEqual(fd.name, 'test1')
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self.assertEqual(fd.meta.get('factory'), {
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'name': '%s.my_flow_factory' % __name__,
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'args': [],
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'kwargs': {'task_name': 'test1'},
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})
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def test_it_works_by_name(self):
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factory_name = '%s.my_flow_factory' % __name__
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engine = taskflow.engines.load_from_factory(
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factory_name, factory_kwargs={'task_name': 'test1'})
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self.assertIsInstance(engine._flow, test_utils.DummyTask)
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fd = engine.storage._flowdetail
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self.assertEqual(fd.name, 'test1')
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self.assertEqual(fd.meta.get('factory'), {
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'name': factory_name,
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'args': [],
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'kwargs': {'task_name': 'test1'},
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})
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