/usr/lib/python2.7/dist-packages/taskflow/tests/unit/test_arguments_passing.py is in python-taskflow 2.3.0-2.
This file is owned by root:root, with mode 0o644.
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# Copyright (C) 2012 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 futurist
import testtools
import taskflow.engines
from taskflow import exceptions as exc
from taskflow import test
from taskflow.tests import utils
from taskflow.utils import eventlet_utils as eu
class ArgumentsPassingTest(utils.EngineTestBase):
def test_save_as(self):
flow = utils.TaskOneReturn(name='task1', provides='first_data')
engine = self._make_engine(flow)
engine.run()
self.assertEqual({'first_data': 1}, engine.storage.fetch_all())
def test_save_all_in_one(self):
flow = utils.TaskMultiReturn(provides='all_data')
engine = self._make_engine(flow)
engine.run()
self.assertEqual({'all_data': (1, 3, 5)},
engine.storage.fetch_all())
def test_save_several_values(self):
flow = utils.TaskMultiReturn(provides=('badger', 'mushroom', 'snake'))
engine = self._make_engine(flow)
engine.run()
self.assertEqual({
'badger': 1,
'mushroom': 3,
'snake': 5
}, engine.storage.fetch_all())
def test_save_dict(self):
flow = utils.TaskMultiDict(provides=set(['badger',
'mushroom',
'snake']))
engine = self._make_engine(flow)
engine.run()
self.assertEqual({
'badger': 0,
'mushroom': 1,
'snake': 2,
}, engine.storage.fetch_all())
def test_bad_save_as_value(self):
self.assertRaises(TypeError,
utils.TaskOneReturn,
name='task1', provides=object())
def test_arguments_passing(self):
flow = utils.TaskMultiArgOneReturn(provides='result')
engine = self._make_engine(flow)
engine.storage.inject({'x': 1, 'y': 4, 'z': 9, 'a': 17})
engine.run()
self.assertEqual({
'x': 1, 'y': 4, 'z': 9, 'a': 17,
'result': 14,
}, engine.storage.fetch_all())
def test_arguments_missing(self):
flow = utils.TaskMultiArg()
engine = self._make_engine(flow)
engine.storage.inject({'a': 1, 'b': 4, 'x': 17})
self.assertRaises(exc.MissingDependencies, engine.run)
def test_partial_arguments_mapping(self):
flow = utils.TaskMultiArgOneReturn(provides='result',
rebind={'x': 'a'})
engine = self._make_engine(flow)
engine.storage.inject({'x': 1, 'y': 4, 'z': 9, 'a': 17})
engine.run()
self.assertEqual({
'x': 1, 'y': 4, 'z': 9, 'a': 17,
'result': 30,
}, engine.storage.fetch_all())
def test_argument_injection(self):
flow = utils.TaskMultiArgOneReturn(provides='result',
inject={'x': 1, 'y': 4, 'z': 9})
engine = self._make_engine(flow)
engine.run()
self.assertEqual({
'result': 14,
}, engine.storage.fetch_all())
def test_argument_injection_rebind(self):
flow = utils.TaskMultiArgOneReturn(provides='result',
rebind=['a', 'b', 'c'],
inject={'a': 1, 'b': 4, 'c': 9})
engine = self._make_engine(flow)
engine.run()
self.assertEqual({
'result': 14,
}, engine.storage.fetch_all())
def test_argument_injection_required(self):
flow = utils.TaskMultiArgOneReturn(provides='result',
requires=['a', 'b', 'c'],
inject={'x': 1, 'y': 4, 'z': 9,
'a': 0, 'b': 0, 'c': 0})
engine = self._make_engine(flow)
engine.run()
self.assertEqual({
'result': 14,
}, engine.storage.fetch_all())
def test_all_arguments_mapping(self):
flow = utils.TaskMultiArgOneReturn(provides='result',
rebind=['a', 'b', 'c'])
engine = self._make_engine(flow)
engine.storage.inject({
'a': 1, 'b': 2, 'c': 3, 'x': 4, 'y': 5, 'z': 6
})
engine.run()
self.assertEqual({
'a': 1, 'b': 2, 'c': 3, 'x': 4, 'y': 5, 'z': 6,
'result': 6,
}, engine.storage.fetch_all())
def test_invalid_argument_name_map(self):
flow = utils.TaskMultiArg(rebind={'z': 'b'})
engine = self._make_engine(flow)
engine.storage.inject({'a': 1, 'y': 4, 'c': 9, 'x': 17})
self.assertRaises(exc.MissingDependencies, engine.run)
def test_invalid_argument_name_list(self):
flow = utils.TaskMultiArg(rebind=['a', 'z', 'b'])
engine = self._make_engine(flow)
engine.storage.inject({'a': 1, 'b': 4, 'c': 9, 'x': 17})
self.assertRaises(exc.MissingDependencies, engine.run)
def test_bad_rebind_args_value(self):
self.assertRaises(TypeError,
utils.TaskOneArg,
rebind=object())
def test_long_arg_name(self):
flow = utils.LongArgNameTask(requires='long_arg_name',
provides='result')
engine = self._make_engine(flow)
engine.storage.inject({'long_arg_name': 1})
engine.run()
self.assertEqual({
'long_arg_name': 1, 'result': 1
}, engine.storage.fetch_all())
def test_revert_rebound_args_required(self):
flow = utils.TaskMultiArg(revert_rebind={'z': 'b'})
engine = self._make_engine(flow)
engine.storage.inject({'a': 1, 'y': 4, 'c': 9, 'x': 17})
self.assertRaises(exc.MissingDependencies, engine.run)
def test_revert_required_args_required(self):
flow = utils.TaskMultiArg(revert_requires=['a'])
engine = self._make_engine(flow)
engine.storage.inject({'y': 4, 'z': 9, 'x': 17})
self.assertRaises(exc.MissingDependencies, engine.run)
def test_derived_revert_args_required(self):
flow = utils.TaskRevertExtraArgs()
engine = self._make_engine(flow)
engine.storage.inject({'y': 4, 'z': 9, 'x': 17})
self.assertRaises(exc.MissingDependencies, engine.run)
engine.storage.inject({'revert_arg': None})
self.assertRaises(exc.ExecutionFailure, engine.run)
class SerialEngineTest(ArgumentsPassingTest, test.TestCase):
def _make_engine(self, flow, flow_detail=None):
return taskflow.engines.load(flow,
flow_detail=flow_detail,
engine='serial',
backend=self.backend)
class ParallelEngineWithThreadsTest(ArgumentsPassingTest, test.TestCase):
_EXECUTOR_WORKERS = 2
def _make_engine(self, flow, flow_detail=None, executor=None):
if executor is None:
executor = 'threads'
return taskflow.engines.load(flow,
flow_detail=flow_detail,
engine='parallel',
backend=self.backend,
executor=executor,
max_workers=self._EXECUTOR_WORKERS)
@testtools.skipIf(not eu.EVENTLET_AVAILABLE, 'eventlet is not available')
class ParallelEngineWithEventletTest(ArgumentsPassingTest, test.TestCase):
def _make_engine(self, flow, flow_detail=None, executor=None):
if executor is None:
executor = futurist.GreenThreadPoolExecutor()
self.addCleanup(executor.shutdown)
return taskflow.engines.load(flow,
flow_detail=flow_detail,
backend=self.backend,
engine='parallel',
executor=executor)
class ParallelEngineWithProcessTest(ArgumentsPassingTest, test.TestCase):
_EXECUTOR_WORKERS = 2
def _make_engine(self, flow, flow_detail=None, executor=None):
if executor is None:
executor = 'processes'
return taskflow.engines.load(flow,
flow_detail=flow_detail,
backend=self.backend,
engine='parallel',
executor=executor,
max_workers=self._EXECUTOR_WORKERS)
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