190 lines
7.4 KiB
Python
190 lines
7.4 KiB
Python
# 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 copy
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import testtools
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from jsonmodels import fields
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import mock
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from dragonflow.common import exceptions
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from dragonflow.db import db_store
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import dragonflow.db.field_types as df_fields
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import dragonflow.db.model_framework as mf
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from dragonflow.db import model_proxy
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from dragonflow.tests import base as tests_base
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@mf.construct_nb_db_model
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class ModelTest(mf.ModelBase):
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topic = fields.StringField()
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def method(self):
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return 1
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@mf.construct_nb_db_model
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class ModelTest2(mf.ModelBase):
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topic = fields.StringField()
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@mf.construct_nb_db_model
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class RefferingModel(mf.ModelBase):
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model_test = df_fields.ReferenceField(ModelTest)
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other_field = fields.StringField()
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ModelTestProxy = model_proxy.create_model_proxy(ModelTest)
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class TestObjectProxy(tests_base.BaseTestCase):
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def setUp(self):
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super(TestObjectProxy, self).setUp()
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self.db_store = mock.MagicMock()
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self.get_inst_mock = mock.patch(
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'dragonflow.db.db_store.get_instance',
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return_value=self.db_store
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)
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self.addCleanup(self.get_inst_mock.stop)
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self.get_inst_mock.start()
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def test_proxied_objects_equal(self):
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obj1 = RefferingModel(id="id",
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model_test="model_id",
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other_field="other")
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obj2 = RefferingModel(id="id",
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model_test="model_id",
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other_field="other")
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self.assertEqual(obj1, obj2)
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def test_proxied_attrs(self):
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self.db_store.get_one.return_value = ModelTest(
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id='id1', topic='topic1')
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mtp = ModelTestProxy(id='id1')
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self.assertEqual('id1', mtp.id)
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self.assertEqual('topic1', mtp.topic)
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self.db_store.get_one.assert_called_once_with(ModelTest(id='id1'))
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self.db_store.get_one.reset_mock()
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mtp = model_proxy.create_reference(ModelTest, id='id1')
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self.assertEqual('id1', mtp.id)
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self.assertEqual('topic1', mtp.topic)
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self.db_store.get_one.assert_called_once_with(ModelTest(id='id1'))
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def test_lazyness(self):
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self.db_store.get_one.return_value = ModelTest(
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id='id1', topic='topic1')
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mtp = ModelTestProxy(id='id1')
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self.assertEqual('id1', mtp.id)
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self.db_store.get_one.assert_not_called()
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self.assertEqual('topic1', mtp.topic)
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self.db_store.get_one.assert_called_once_with(ModelTest(id='id1'))
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self.db_store.get_one.reset_mock()
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mtp = model_proxy.create_reference(ModelTest, id='id1')
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self.assertEqual('id1', mtp.id)
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self.db_store.get_one.assert_not_called()
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self.assertEqual('topic1', mtp.topic)
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self.db_store.get_one.assert_called_once_with(ModelTest(id='id1'))
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def test_eagerness(self):
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self.db_store.get_one.return_value = ModelTest(
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id='id1', topic='topic1')
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ModelTestProxy(id='id1', lazy=False)
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self.db_store.get_one.assert_called_once_with(ModelTest(id='id1'))
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self.db_store.get_one.reset_mock()
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model_proxy.create_reference(ModelTest, lazy=False, id='id1')
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self.db_store.get_one.assert_called_once_with(ModelTest(id='id1'))
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def test_none_reference(self):
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self.assertIsNone(model_proxy.create_reference(ModelTest, id=None))
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self.assertIsNone(model_proxy.create_reference(ModelTest))
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def test_memoization(self):
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self.assertEqual(ModelTestProxy,
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model_proxy.create_model_proxy(ModelTest))
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self.assertNotEqual(ModelTestProxy,
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model_proxy.create_model_proxy(ModelTest2))
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def test_null_comparison(self):
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# The following test must be assertNotEquals (and not assertIsNotNone)
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# since we test the flow via the __eq__ function. assertIsNotNone tests
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# using 'is', which doesn't use the __eq__ function flow.
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self.assertNotEqual(model_proxy.create_reference(ModelTest, '4321'),
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None) # noqa: H203
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m = RefferingModel(other_field='hi there')
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ref = ModelTest(id='1234', topic='3')
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m1 = RefferingModel(model_test=ref)
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m.update(m1)
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self.assertEqual('1234', m.model_test.id)
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def test_proxied_method(self):
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self.db_store.get_one.return_value = ModelTest(
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id='id1', topic='topic1')
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mtp = ModelTestProxy(id='id1')
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self.assertEqual(1, mtp.method())
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def test_is_model_proxy(self):
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model_instance = ModelTest(id='id1', topic='topic1')
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self.assertFalse(model_proxy.is_model_proxy(model_instance))
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model_ref = model_proxy.create_reference(ModelTest, id='id1')
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self.assertTrue(model_proxy.is_model_proxy(model_ref))
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def test_stale_model_refresh(self):
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model_test1 = ModelTest(id='1', topic='topic')
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model_test2 = ModelTest(id='1', topic='topic2')
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self.db_store.get_one.return_value = model_test1
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reffing_model = RefferingModel(id='2', model_test='1')
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reffing_model.model_test.get_object()
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self.db_store.get_one.assert_called_once_with(ModelTest(id='1'))
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self.db_store.get_one.reset_mock()
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self.db_store.get_one.return_value = model_test2
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model_test1._is_object_stale = True
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reffing_model.model_test.get_object()
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self.db_store.get_one.assert_called_once_with(ModelTest(id='1'))
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def test_integration_stale_model_db_store(self):
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db_store_inst = db_store.DbStore()
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with mock.patch('dragonflow.db.db_store.get_instance',
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return_value=db_store_inst):
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model_test1 = ModelTest(id='1', topic='topic')
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db_store_inst.update(model_test1)
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reffing_model = RefferingModel(id='2', model_test='1')
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self.assertEqual(model_test1,
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reffing_model.model_test.get_object())
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model_test2 = ModelTest(id='1', topic='topic2')
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db_store_inst.update(model_test2)
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self.assertEqual(model_test2,
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reffing_model.model_test.get_object())
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def test_model_proxy_copy(self):
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reffing_model = RefferingModel(id='2', model_test='1')
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model_test_ref = reffing_model.model_test
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model_test_ref_copy = copy.copy(model_test_ref)
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model_test_ref_deepcopy = copy.deepcopy(model_test_ref)
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self.assertEqual(model_test_ref, model_test_ref_copy)
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self.assertEqual(model_test_ref, model_test_ref_deepcopy)
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self.assertNotEqual(id(model_test_ref), id(model_test_ref_copy))
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self.assertNotEqual(id(model_test_ref), id(model_test_ref_deepcopy))
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def test_non_existing_reference(self):
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reffing_model = RefferingModel(id='2', model_test='1')
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self.db_store.get_one.return_value = None
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with testtools.ExpectedException(exceptions.ReferencedObjectNotFound):
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topic = reffing_model.model_test.topic # noqa
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