144 lines
5.6 KiB
Python
144 lines
5.6 KiB
Python
# Copyright 2016 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 maxStalenessSeconds support."""
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import os
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import sys
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import time
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import warnings
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sys.path[0:0] = [""]
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from pymongo import MongoClient
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from pymongo.errors import ConfigurationError
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from pymongo.server_selectors import writable_server_selector
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from test import client_context, unittest
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from test.utils import rs_or_single_client
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from test.utils_selection_tests import create_selection_tests
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# Location of JSON test specifications.
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_TEST_PATH = os.path.join(
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os.path.dirname(os.path.realpath(__file__)),
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'max_staleness')
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class TestAllScenarios(create_selection_tests(_TEST_PATH)):
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pass
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class TestMaxStaleness(unittest.TestCase):
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def test_max_staleness(self):
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client = MongoClient()
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self.assertEqual(-1, client.read_preference.max_staleness)
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client = MongoClient("mongodb://a/?readPreference=secondary")
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self.assertEqual(-1, client.read_preference.max_staleness)
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# These tests are specified in max-staleness-tests.rst.
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with self.assertRaises(ConfigurationError):
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# Default read pref "primary" can't be used with max staleness.
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MongoClient("mongodb://a/?maxStalenessSeconds=120")
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with self.assertRaises(ConfigurationError):
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# Read pref "primary" can't be used with max staleness.
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MongoClient("mongodb://a/?readPreference=primary&"
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"maxStalenessSeconds=120")
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client = MongoClient("mongodb://host/?maxStalenessSeconds=-1")
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self.assertEqual(-1, client.read_preference.max_staleness)
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client = MongoClient("mongodb://host/?readPreference=primary&"
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"maxStalenessSeconds=-1")
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self.assertEqual(-1, client.read_preference.max_staleness)
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client = MongoClient("mongodb://host/?readPreference=secondary&"
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"maxStalenessSeconds=120")
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self.assertEqual(120, client.read_preference.max_staleness)
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client = MongoClient("mongodb://a/?readPreference=secondary&"
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"maxStalenessSeconds=1")
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self.assertEqual(1, client.read_preference.max_staleness)
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client = MongoClient("mongodb://a/?readPreference=secondary&"
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"maxStalenessSeconds=-1")
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self.assertEqual(-1, client.read_preference.max_staleness)
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client = MongoClient(maxStalenessSeconds=-1, readPreference="nearest")
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self.assertEqual(-1, client.read_preference.max_staleness)
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with self.assertRaises(TypeError):
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# Prohibit None.
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MongoClient(maxStalenessSeconds=None, readPreference="nearest")
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def test_max_staleness_float(self):
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with self.assertRaises(TypeError) as ctx:
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rs_or_single_client(maxStalenessSeconds=1.5,
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readPreference="nearest")
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self.assertIn("must be an integer", str(ctx.exception))
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with warnings.catch_warnings(record=True) as ctx:
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warnings.simplefilter("always")
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client = MongoClient("mongodb://host/?maxStalenessSeconds=1.5"
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"&readPreference=nearest")
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# Option was ignored.
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self.assertEqual(-1, client.read_preference.max_staleness)
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self.assertIn("must be an integer", str(ctx[0]))
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def test_max_staleness_zero(self):
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# Zero is too small.
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with self.assertRaises(ValueError) as ctx:
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rs_or_single_client(maxStalenessSeconds=0,
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readPreference="nearest")
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self.assertIn("must be a positive integer", str(ctx.exception))
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with warnings.catch_warnings(record=True) as ctx:
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warnings.simplefilter("always")
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client = MongoClient("mongodb://host/?maxStalenessSeconds=0"
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"&readPreference=nearest")
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# Option was ignored.
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self.assertEqual(-1, client.read_preference.max_staleness)
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self.assertIn("must be a positive integer", str(ctx[0]))
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@client_context.require_version_min(3, 3, 6) # SERVER-8858
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@client_context.require_replica_set
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def test_last_write_date(self):
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# From max-staleness-tests.rst, "Parse lastWriteDate".
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client = rs_or_single_client(heartbeatFrequencyMS=500)
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client.pymongo_test.test.insert_one({})
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time.sleep(2)
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server = client._topology.select_server(writable_server_selector)
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last_write = server.description.last_write_date
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self.assertTrue(last_write)
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client.pymongo_test.test.insert_one({})
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time.sleep(2)
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server = client._topology.select_server(writable_server_selector)
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self.assertGreater(server.description.last_write_date, last_write)
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self.assertLess(server.description.last_write_date, last_write + 10)
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@client_context.require_version_max(3, 3)
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def test_last_write_date_absent(self):
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# From max-staleness-tests.rst, "Absent lastWriteDate".
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client = rs_or_single_client()
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sd = client._topology.select_server(writable_server_selector)
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self.assertIsNone(sd.description.last_write_date)
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if __name__ == "__main__":
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unittest.main()
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