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# Copyright 2023-present MongoDB, Inc.
#
# 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.
"""Test PyMongo cursor does not set exhaustAllowed automatically (PYTHON-4007)."""
from __future__ import annotations
import unittest
from test import PyMongoTestCase
import pytest
try:
from mockupdb import MockupDB, OpMsg, going
_HAVE_MOCKUPDB = True
except ImportError:
_HAVE_MOCKUPDB = False
from bson.objectid import ObjectId
from pymongo.common import MIN_SUPPORTED_WIRE_VERSION
from pymongo.errors import OperationFailure
pytestmark = pytest.mark.mockupdb
class TestCursor(PyMongoTestCase):
def test_getmore_load_balanced(self):
server = MockupDB()
server.autoresponds(
"hello",
isWritablePrimary=True,
msg="isdbgrid",
minWireVersion=0,
maxWireVersion=20,
helloOk=True,
serviceId=ObjectId(),
)
server.run()
self.addCleanup(server.stop)
client = self.simple_client(server.uri, loadBalanced=True)
self.addCleanup(client.close)
collection = client.db.coll
cursor = collection.find()
with going(next, cursor):
request = server.receives(OpMsg({"find": "coll"}))
self.assertEqual(request.flags, 0, "exhaustAllowed should not be set")
# Respond with a different namespace.
request.reply({"cursor": {"id": 123, "firstBatch": [{}]}})
# 3 batches, check exhaustAllowed on all getMores.
for i in range(1, 3):
with going(next, cursor):
request = server.receives(OpMsg({"getMore": 123}))
self.assertEqual(request.flags, 0, "exhaustAllowed should not be set")
cursor_id = 123 if i < 2 else 0
request.replies({"cursor": {"id": cursor_id, "nextBatch": [{}]}})
class TestRetryableErrorCodeCatch(PyMongoTestCase):
def _test_fail_on_operation_failure_with_code(self, code):
"""Test reads on error codes that should not be retried"""
server = MockupDB()
server.run()
self.addCleanup(server.stop)
server.autoresponds("ismaster", maxWireVersion=MIN_SUPPORTED_WIRE_VERSION)
client = self.simple_client(server.uri)
with going(lambda: server.receives(OpMsg({"find": "collection"})).command_err(code=code)):
cursor = client.db.collection.find()
with self.assertRaises(OperationFailure) as ctx:
cursor.next()
self.assertEqual(ctx.exception.code, code)
def test_fail_on_operation_failure_none(self):
self._test_fail_on_operation_failure_with_code(None)
def test_fail_on_operation_failure_zero(self):
self._test_fail_on_operation_failure_with_code(0)
def test_fail_on_operation_failure_one(self):
self._test_fail_on_operation_failure_with_code(1)
if __name__ == "__main__":
unittest.main()
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