taskflow/taskflow/tests/unit/test_arguments_passing.py

141 lines
5.2 KiB
Python

# -*- coding: utf-8 -*-
# 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 taskflow.engines
from taskflow import exceptions as exc
from taskflow import test
from taskflow.tests import utils
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(engine.storage.fetch_all(), {'first_data': 1})
def test_save_all_in_one(self):
flow = utils.TaskMultiReturn(provides='all_data')
engine = self._make_engine(flow)
engine.run()
self.assertEqual(engine.storage.fetch_all(),
{'all_data': (1, 3, 5)})
def test_save_several_values(self):
flow = utils.TaskMultiReturn(provides=('badger', 'mushroom', 'snake'))
engine = self._make_engine(flow)
engine.run()
self.assertEqual(engine.storage.fetch_all(), {
'badger': 1,
'mushroom': 3,
'snake': 5
})
def test_save_dict(self):
flow = utils.TaskMultiDict(provides=set(['badger',
'mushroom',
'snake']))
engine = self._make_engine(flow)
engine.run()
self.assertEqual(engine.storage.fetch_all(), {
'badger': 0,
'mushroom': 1,
'snake': 2,
})
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(engine.storage.fetch_all(), {
'x': 1, 'y': 4, 'z': 9, 'a': 17,
'result': 14,
})
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(engine.storage.fetch_all(), {
'x': 1, 'y': 4, 'z': 9, 'a': 17,
'result': 30,
})
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(engine.storage.fetch_all(), {
'a': 1, 'b': 2, 'c': 3, 'x': 4, 'y': 5, 'z': 6,
'result': 6,
})
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())
class SingleThreadedEngineTest(ArgumentsPassingTest,
test.TestCase):
def _make_engine(self, flow, flow_detail=None):
return taskflow.engines.load(flow,
flow_detail=flow_detail,
engine_conf='serial',
backend=self.backend)
class MultiThreadedEngineTest(ArgumentsPassingTest,
test.TestCase):
def _make_engine(self, flow, flow_detail=None, executor=None):
engine_conf = dict(engine='parallel',
executor=executor)
return taskflow.engines.load(flow, flow_detail=flow_detail,
engine_conf=engine_conf,
backend=self.backend)