120 lines
4.4 KiB
Python
120 lines
4.4 KiB
Python
# Copyright 2015-present MongoDB, 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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"""Test the read_concern module."""
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from bson.son import SON
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from pymongo.errors import OperationFailure
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from pymongo.read_concern import ReadConcern
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from test import client_context, IntegrationTest
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from test.utils import single_client, rs_or_single_client, OvertCommandListener
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class TestReadConcern(IntegrationTest):
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@classmethod
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@client_context.require_connection
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def setUpClass(cls):
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super(TestReadConcern, cls).setUpClass()
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cls.listener = OvertCommandListener()
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cls.client = single_client(event_listeners=[cls.listener])
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cls.db = cls.client.pymongo_test
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client_context.client.pymongo_test.create_collection('coll')
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@classmethod
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def tearDownClass(cls):
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cls.client.close()
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client_context.client.pymongo_test.drop_collection('coll')
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super(TestReadConcern, cls).tearDownClass()
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def tearDown(self):
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self.listener.results.clear()
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super(TestReadConcern, self).tearDown()
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def test_read_concern(self):
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rc = ReadConcern()
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self.assertIsNone(rc.level)
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self.assertTrue(rc.ok_for_legacy)
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rc = ReadConcern('majority')
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self.assertEqual('majority', rc.level)
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self.assertFalse(rc.ok_for_legacy)
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rc = ReadConcern('local')
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self.assertEqual('local', rc.level)
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self.assertTrue(rc.ok_for_legacy)
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self.assertRaises(TypeError, ReadConcern, 42)
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def test_read_concern_uri(self):
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uri = 'mongodb://%s/?readConcernLevel=majority' % (
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client_context.pair,)
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client = rs_or_single_client(uri, connect=False)
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self.assertEqual(ReadConcern('majority'), client.read_concern)
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def test_invalid_read_concern(self):
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coll = self.db.get_collection(
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'coll', read_concern=ReadConcern('unknown'))
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# We rely on the server to validate read concern.
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with self.assertRaises(OperationFailure):
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coll.find_one()
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def test_find_command(self):
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# readConcern not sent in command if not specified.
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coll = self.db.coll
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tuple(coll.find({'field': 'value'}))
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self.assertNotIn('readConcern',
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self.listener.results['started'][0].command)
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self.listener.results.clear()
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# Explicitly set readConcern to 'local'.
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coll = self.db.get_collection('coll', read_concern=ReadConcern('local'))
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tuple(coll.find({'field': 'value'}))
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self.assertEqualCommand(
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SON([('find', 'coll'),
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('filter', {'field': 'value'}),
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('readConcern', {'level': 'local'})]),
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self.listener.results['started'][0].command)
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def test_command_cursor(self):
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# readConcern not sent in command if not specified.
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coll = self.db.coll
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tuple(coll.aggregate([{'$match': {'field': 'value'}}]))
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self.assertNotIn('readConcern',
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self.listener.results['started'][0].command)
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self.listener.results.clear()
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# Explicitly set readConcern to 'local'.
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coll = self.db.get_collection('coll', read_concern=ReadConcern('local'))
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tuple(coll.aggregate([{'$match': {'field': 'value'}}]))
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self.assertEqual(
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{'level': 'local'},
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self.listener.results['started'][0].command['readConcern'])
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def test_aggregate_out(self):
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coll = self.db.get_collection('coll', read_concern=ReadConcern('local'))
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tuple(coll.aggregate([{'$match': {'field': 'value'}},
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{'$out': 'output_collection'}]))
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# Aggregate with $out supports readConcern MongoDB 4.2 onwards.
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if client_context.version >= (4, 1):
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self.assertIn('readConcern',
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self.listener.results['started'][0].command)
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else:
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self.assertNotIn('readConcern',
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self.listener.results['started'][0].command)
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