mirror of
https://github.com/wassname/catalyst.git
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jfkirk
95 lines
2.8 KiB
Python
95 lines
2.8 KiB
Python
#
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# Copyright 2015 Quantopian, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain 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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from nose_parameterized import parameterized
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from unittest import TestCase
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from zipline.finance.trading import TradingEnvironment
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from .serialization_cases import (
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object_serialization_cases,
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assert_dict_equal
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)
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from six import iteritems
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def gather_bad_dicts(state):
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bad = []
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for k, v in iteritems(state):
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if not isinstance(v, dict):
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continue
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if type(v) != dict:
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bad.append((k, v))
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bad.extend(gather_bad_dicts(v))
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return bad
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class SerializationTestCase(TestCase):
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@classmethod
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def setUpClass(cls):
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cls.env = TradingEnvironment()
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@classmethod
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def tearDownClass(cls):
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del cls.env
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@parameterized.expand(object_serialization_cases())
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def test_object_serialization(self,
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_,
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cls,
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initargs,
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di_vars,
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comparison_method='dict'):
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obj = cls(*initargs)
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for k, v in di_vars.items():
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setattr(obj, k, v)
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state = obj.__getstate__()
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bad_dicts = gather_bad_dicts(state)
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bad_template = "type({0}) == {1}".format
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bad_msgs = [bad_template(k, type(v)) for k, v in bad_dicts]
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msg = "Only support bare dicts. " + ', '.join(bad_msgs)
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self.assertEqual(len(bad_dicts), 0, msg)
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# no state should have a dict subclass. Only regular PyDict
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if hasattr(obj, '__getinitargs__'):
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initargs = obj.__getinitargs__()
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else:
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initargs = None
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if hasattr(obj, '__getnewargs__'):
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newargs = obj.__getnewargs__()
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else:
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newargs = None
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if newargs is not None:
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obj2 = cls.__new__(cls, *newargs)
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else:
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obj2 = cls.__new__(cls)
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if initargs is not None:
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obj2.__init__(*initargs)
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obj2.__setstate__(state)
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for k, v in di_vars.items():
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setattr(obj2, k, v)
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if comparison_method == 'repr':
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self.assertEqual(obj.__repr__(), obj2.__repr__())
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elif comparison_method == 'to_dict':
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assert_dict_equal(obj.to_dict(), obj2.to_dict())
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else:
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assert_dict_equal(obj.__dict__, obj2.__dict__)
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