Files
deb-python-taskflow/taskflow/tests/unit/test_engine_helpers.py
Joshua Harlow ce620c399a Use oslotest to provide our base test case class
The oslotest library has a nice openstack testing integrated
base class that can ensure we setup our base test case using
the right logging fixtures, test timeouts, and output fixtures
that better operate in the openstack ecosystem.

This will also allow us to remove some of the functionality
that we currently have in our base test case and replace it with
the equivalent (or better) functionality that oslotest now
provides.

Part of blueprint use-oslo-test

Change-Id: I1602d5180ec8649a1899185972750ddddf65990f
2014-09-27 14:53:12 -07:00

131 lines
4.9 KiB
Python

# -*- coding: utf-8 -*-
# Copyright (C) 2013 Yahoo! Inc. All Rights Reserved.
#
# 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 taskflow.engines
from taskflow import exceptions as exc
from taskflow.patterns import linear_flow
from taskflow import test
from taskflow.test import mock
from taskflow.tests import utils as test_utils
from taskflow.utils import persistence_utils as p_utils
class EngineLoadingTestCase(test.TestCase):
def test_default_load(self):
f = linear_flow.Flow('test')
f.add(test_utils.TaskOneReturn("run-1"))
e = taskflow.engines.load(f)
self.assertIsNotNone(e)
def test_unknown_load(self):
f = linear_flow.Flow('test')
f.add(test_utils.TaskOneReturn("run-1"))
self.assertRaises(exc.NotFound, taskflow.engines.load, f,
engine_conf='not_really_any_engine')
class FlowFromDetailTestCase(test.TestCase):
def test_no_meta(self):
_lb, flow_detail = p_utils.temporary_flow_detail()
self.assertEqual({}, flow_detail.meta)
self.assertRaisesRegexp(ValueError,
'^Cannot .* no factory information saved.$',
taskflow.engines.flow_from_detail,
flow_detail)
def test_no_factory_in_meta(self):
_lb, flow_detail = p_utils.temporary_flow_detail()
self.assertRaisesRegexp(ValueError,
'^Cannot .* no factory information saved.$',
taskflow.engines.flow_from_detail,
flow_detail)
def test_no_importable_function(self):
_lb, flow_detail = p_utils.temporary_flow_detail()
flow_detail.meta = dict(factory=dict(
name='you can not import me, i contain spaces'
))
self.assertRaisesRegexp(ImportError,
'^Could not import factory',
taskflow.engines.flow_from_detail,
flow_detail)
def test_no_arg_factory(self):
name = 'some.test.factory'
_lb, flow_detail = p_utils.temporary_flow_detail()
flow_detail.meta = dict(factory=dict(name=name))
with mock.patch('oslo.utils.importutils.import_class',
return_value=lambda: 'RESULT') as mock_import:
result = taskflow.engines.flow_from_detail(flow_detail)
mock_import.assert_called_onec_with(name)
self.assertEqual(result, 'RESULT')
def test_factory_with_arg(self):
name = 'some.test.factory'
_lb, flow_detail = p_utils.temporary_flow_detail()
flow_detail.meta = dict(factory=dict(name=name, args=['foo']))
with mock.patch('oslo.utils.importutils.import_class',
return_value=lambda x: 'RESULT %s' % x) as mock_import:
result = taskflow.engines.flow_from_detail(flow_detail)
mock_import.assert_called_onec_with(name)
self.assertEqual(result, 'RESULT foo')
def my_flow_factory(task_name):
return test_utils.DummyTask(name=task_name)
class LoadFromFactoryTestCase(test.TestCase):
def test_non_reimportable(self):
def factory():
pass
self.assertRaisesRegexp(ValueError,
'Flow factory .* is not reimportable',
taskflow.engines.load_from_factory,
factory)
def test_it_works(self):
engine = taskflow.engines.load_from_factory(
my_flow_factory, factory_kwargs={'task_name': 'test1'})
self.assertIsInstance(engine._flow, test_utils.DummyTask)
fd = engine.storage._flowdetail
self.assertEqual(fd.name, 'test1')
self.assertEqual(fd.meta.get('factory'), {
'name': '%s.my_flow_factory' % __name__,
'args': [],
'kwargs': {'task_name': 'test1'},
})
def test_it_works_by_name(self):
factory_name = '%s.my_flow_factory' % __name__
engine = taskflow.engines.load_from_factory(
factory_name, factory_kwargs={'task_name': 'test1'})
self.assertIsInstance(engine._flow, test_utils.DummyTask)
fd = engine.storage._flowdetail
self.assertEqual(fd.name, 'test1')
self.assertEqual(fd.meta.get('factory'), {
'name': factory_name,
'args': [],
'kwargs': {'task_name': 'test1'},
})