817 lines
28 KiB
Python
817 lines
28 KiB
Python
# Copyright 2009-2012 10gen, 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 cursor module."""
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import copy
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import itertools
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import random
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import re
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import sys
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import unittest
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sys.path[0:0] = [""]
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from nose.plugins.skip import SkipTest
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from bson.code import Code
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from bson.son import SON
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from pymongo import (ASCENDING,
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DESCENDING)
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from pymongo.database import Database
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from pymongo.errors import (InvalidOperation,
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OperationFailure)
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from test import version
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from test.test_client import get_client
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class TestCursor(unittest.TestCase):
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def setUp(self):
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self.db = Database(get_client(), "pymongo_test")
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def test_explain(self):
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a = self.db.test.find()
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b = a.explain()
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for _ in a:
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break
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c = a.explain()
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del b["millis"]
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b.pop("oldPlan", None)
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del c["millis"]
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c.pop("oldPlan", None)
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self.assertEqual(b, c)
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self.assertTrue("cursor" in b)
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def test_hint(self):
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db = self.db
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self.assertRaises(TypeError, db.test.find().hint, 5.5)
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db.test.drop()
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for i in range(100):
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db.test.insert({"num": i, "foo": i})
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self.assertRaises(OperationFailure,
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db.test.find({"num": 17, "foo": 17})
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.hint([("num", ASCENDING)]).explain)
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self.assertRaises(OperationFailure,
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db.test.find({"num": 17, "foo": 17})
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.hint([("foo", ASCENDING)]).explain)
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index = db.test.create_index("num")
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spec = [("num", ASCENDING)]
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self.assertEqual(db.test.find({}).explain()["cursor"], "BasicCursor")
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self.assertEqual(db.test.find({}).hint(spec).explain()["cursor"],
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"BtreeCursor %s" % index)
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self.assertEqual(db.test.find({}).hint(spec).hint(None)
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.explain()["cursor"],
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"BasicCursor")
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self.assertRaises(OperationFailure,
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db.test.find({"num": 17, "foo": 17})
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.hint([("foo", ASCENDING)]).explain)
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a = db.test.find({"num": 17})
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a.hint(spec)
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for _ in a:
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break
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self.assertRaises(InvalidOperation, a.hint, spec)
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self.assertRaises(TypeError, db.test.find().hint, index)
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def test_limit(self):
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db = self.db
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self.assertRaises(TypeError, db.test.find().limit, None)
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self.assertRaises(TypeError, db.test.find().limit, "hello")
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self.assertRaises(TypeError, db.test.find().limit, 5.5)
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db.test.drop()
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for i in range(100):
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db.test.save({"x": i})
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count = 0
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for _ in db.test.find():
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count += 1
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self.assertEqual(count, 100)
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count = 0
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for _ in db.test.find().limit(20):
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count += 1
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self.assertEqual(count, 20)
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count = 0
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for _ in db.test.find().limit(99):
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count += 1
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self.assertEqual(count, 99)
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count = 0
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for _ in db.test.find().limit(1):
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count += 1
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self.assertEqual(count, 1)
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count = 0
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for _ in db.test.find().limit(0):
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count += 1
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self.assertEqual(count, 100)
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count = 0
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for _ in db.test.find().limit(0).limit(50).limit(10):
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count += 1
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self.assertEqual(count, 10)
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a = db.test.find()
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a.limit(10)
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for _ in a:
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break
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self.assertRaises(InvalidOperation, a.limit, 5)
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def test_batch_size(self):
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db = self.db
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db.test.drop()
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for x in range(200):
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db.test.save({"x": x})
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self.assertRaises(TypeError, db.test.find().batch_size, None)
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self.assertRaises(TypeError, db.test.find().batch_size, "hello")
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self.assertRaises(TypeError, db.test.find().batch_size, 5.5)
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self.assertRaises(ValueError, db.test.find().batch_size, -1)
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a = db.test.find()
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for _ in a:
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break
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self.assertRaises(InvalidOperation, a.batch_size, 5)
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def cursor_count(cursor, expected_count):
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count = 0
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for _ in cursor:
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count += 1
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self.assertEqual(expected_count, count)
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cursor_count(db.test.find().batch_size(0), 200)
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cursor_count(db.test.find().batch_size(1), 200)
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cursor_count(db.test.find().batch_size(2), 200)
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cursor_count(db.test.find().batch_size(5), 200)
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cursor_count(db.test.find().batch_size(100), 200)
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cursor_count(db.test.find().batch_size(500), 200)
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cursor_count(db.test.find().batch_size(0).limit(1), 1)
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cursor_count(db.test.find().batch_size(1).limit(1), 1)
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cursor_count(db.test.find().batch_size(2).limit(1), 1)
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cursor_count(db.test.find().batch_size(5).limit(1), 1)
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cursor_count(db.test.find().batch_size(100).limit(1), 1)
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cursor_count(db.test.find().batch_size(500).limit(1), 1)
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cursor_count(db.test.find().batch_size(0).limit(10), 10)
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cursor_count(db.test.find().batch_size(1).limit(10), 10)
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cursor_count(db.test.find().batch_size(2).limit(10), 10)
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cursor_count(db.test.find().batch_size(5).limit(10), 10)
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cursor_count(db.test.find().batch_size(100).limit(10), 10)
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cursor_count(db.test.find().batch_size(500).limit(10), 10)
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def test_limit_and_batch_size(self):
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db = self.db
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db.test.drop()
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for x in range(500):
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db.test.save({"x": x})
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curs = db.test.find().limit(0).batch_size(10)
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curs.next()
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self.assertEqual(10, curs._Cursor__retrieved)
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curs = db.test.find().limit(-2).batch_size(0)
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curs.next()
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self.assertEqual(2, curs._Cursor__retrieved)
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curs = db.test.find().limit(-4).batch_size(5)
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curs.next()
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self.assertEqual(4, curs._Cursor__retrieved)
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curs = db.test.find().limit(50).batch_size(500)
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curs.next()
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self.assertEqual(50, curs._Cursor__retrieved)
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curs = db.test.find().batch_size(500)
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curs.next()
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self.assertEqual(500, curs._Cursor__retrieved)
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curs = db.test.find().limit(50)
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curs.next()
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self.assertEqual(50, curs._Cursor__retrieved)
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# these two might be shaky, as the default
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# is set by the server. as of 2.0.0-rc0, 101
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# or 1MB (whichever is smaller) is default
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# for queries without ntoreturn
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curs = db.test.find()
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curs.next()
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self.assertEqual(101, curs._Cursor__retrieved)
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curs = db.test.find().limit(0).batch_size(0)
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curs.next()
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self.assertEqual(101, curs._Cursor__retrieved)
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def test_skip(self):
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db = self.db
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self.assertRaises(TypeError, db.test.find().skip, None)
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self.assertRaises(TypeError, db.test.find().skip, "hello")
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self.assertRaises(TypeError, db.test.find().skip, 5.5)
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db.drop_collection("test")
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for i in range(100):
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db.test.save({"x": i})
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for i in db.test.find():
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self.assertEqual(i["x"], 0)
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break
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for i in db.test.find().skip(20):
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self.assertEqual(i["x"], 20)
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break
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for i in db.test.find().skip(99):
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self.assertEqual(i["x"], 99)
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break
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for i in db.test.find().skip(1):
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self.assertEqual(i["x"], 1)
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break
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for i in db.test.find().skip(0):
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self.assertEqual(i["x"], 0)
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break
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for i in db.test.find().skip(0).skip(50).skip(10):
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self.assertEqual(i["x"], 10)
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break
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for i in db.test.find().skip(1000):
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self.fail()
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a = db.test.find()
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a.skip(10)
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for _ in a:
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break
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self.assertRaises(InvalidOperation, a.skip, 5)
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def test_sort(self):
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db = self.db
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self.assertRaises(TypeError, db.test.find().sort, 5)
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self.assertRaises(ValueError, db.test.find().sort, [])
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self.assertRaises(TypeError, db.test.find().sort, [], ASCENDING)
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self.assertRaises(TypeError, db.test.find().sort,
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[("hello", DESCENDING)], DESCENDING)
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db.test.drop()
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unsort = range(10)
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random.shuffle(unsort)
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for i in unsort:
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db.test.save({"x": i})
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asc = [i["x"] for i in db.test.find().sort("x", ASCENDING)]
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self.assertEqual(asc, range(10))
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asc = [i["x"] for i in db.test.find().sort("x")]
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self.assertEqual(asc, range(10))
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asc = [i["x"] for i in db.test.find().sort([("x", ASCENDING)])]
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self.assertEqual(asc, range(10))
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expect = range(10)
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expect.reverse()
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desc = [i["x"] for i in db.test.find().sort("x", DESCENDING)]
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self.assertEqual(desc, expect)
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desc = [i["x"] for i in db.test.find().sort([("x", DESCENDING)])]
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self.assertEqual(desc, expect)
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desc = [i["x"] for i in
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db.test.find().sort("x", ASCENDING).sort("x", DESCENDING)]
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self.assertEqual(desc, expect)
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expected = [(1, 5), (2, 5), (0, 3), (7, 3), (9, 2), (2, 1), (3, 1)]
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shuffled = list(expected)
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random.shuffle(shuffled)
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db.test.drop()
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for (a, b) in shuffled:
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db.test.save({"a": a, "b": b})
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result = [(i["a"], i["b"]) for i in
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db.test.find().sort([("b", DESCENDING),
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("a", ASCENDING)])]
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self.assertEqual(result, expected)
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a = db.test.find()
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a.sort("x", ASCENDING)
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for _ in a:
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break
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self.assertRaises(InvalidOperation, a.sort, "x", ASCENDING)
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def test_count(self):
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db = self.db
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db.test.drop()
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self.assertEqual(0, db.test.find().count())
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for i in range(10):
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db.test.save({"x": i})
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self.assertEqual(10, db.test.find().count())
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self.assertTrue(isinstance(db.test.find().count(), int))
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self.assertEqual(10, db.test.find().limit(5).count())
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self.assertEqual(10, db.test.find().skip(5).count())
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self.assertEqual(1, db.test.find({"x": 1}).count())
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self.assertEqual(5, db.test.find({"x": {"$lt": 5}}).count())
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a = db.test.find()
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b = a.count()
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for _ in a:
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break
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self.assertEqual(b, a.count())
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self.assertEqual(0, db.test.acollectionthatdoesntexist.find().count())
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def test_where(self):
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db = self.db
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db.test.drop()
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a = db.test.find()
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self.assertRaises(TypeError, a.where, 5)
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self.assertRaises(TypeError, a.where, None)
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self.assertRaises(TypeError, a.where, {})
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for i in range(10):
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db.test.save({"x": i})
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self.assertEqual(3, len(list(db.test.find().where('this.x < 3'))))
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self.assertEqual(3,
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len(list(db.test.find().where(Code('this.x < 3')))))
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self.assertEqual(3, len(list(db.test.find().where(Code('this.x < i',
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{"i": 3})))))
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self.assertEqual(10, len(list(db.test.find())))
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self.assertEqual(3, db.test.find().where('this.x < 3').count())
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self.assertEqual(10, db.test.find().count())
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self.assertEqual(3, db.test.find().where(u'this.x < 3').count())
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self.assertEqual([0, 1, 2],
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[a["x"] for a in
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db.test.find().where('this.x < 3')])
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self.assertEqual([],
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[a["x"] for a in
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db.test.find({"x": 5}).where('this.x < 3')])
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self.assertEqual([5],
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[a["x"] for a in
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db.test.find({"x": 5}).where('this.x > 3')])
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cursor = db.test.find().where('this.x < 3').where('this.x > 7')
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self.assertEqual([8, 9], [a["x"] for a in cursor])
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a = db.test.find()
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b = a.where('this.x > 3')
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for _ in a:
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break
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self.assertRaises(InvalidOperation, a.where, 'this.x < 3')
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def test_rewind(self):
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self.db.test.save({"x": 1})
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self.db.test.save({"x": 2})
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self.db.test.save({"x": 3})
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cursor = self.db.test.find().limit(2)
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count = 0
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for _ in cursor:
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count += 1
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self.assertEqual(2, count)
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count = 0
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for _ in cursor:
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count += 1
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self.assertEqual(0, count)
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cursor.rewind()
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count = 0
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for _ in cursor:
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count += 1
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self.assertEqual(2, count)
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cursor.rewind()
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count = 0
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for _ in cursor:
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break
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cursor.rewind()
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for _ in cursor:
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count += 1
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self.assertEqual(2, count)
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self.assertEqual(cursor, cursor.rewind())
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def test_clone(self):
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self.db.test.save({"x": 1})
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self.db.test.save({"x": 2})
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self.db.test.save({"x": 3})
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cursor = self.db.test.find().limit(2)
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count = 0
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for _ in cursor:
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count += 1
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self.assertEqual(2, count)
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count = 0
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for _ in cursor:
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count += 1
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self.assertEqual(0, count)
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cursor = cursor.clone()
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cursor2 = cursor.clone()
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count = 0
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for _ in cursor:
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count += 1
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self.assertEqual(2, count)
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for _ in cursor2:
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count += 1
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self.assertEqual(4, count)
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cursor.rewind()
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count = 0
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for _ in cursor:
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break
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cursor = cursor.clone()
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for _ in cursor:
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count += 1
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self.assertEqual(2, count)
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self.assertNotEqual(cursor, cursor.clone())
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class MyClass(dict):
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pass
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cursor = self.db.test.find(as_class=MyClass)
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for e in cursor:
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self.assertEqual(type(MyClass()), type(e))
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cursor = self.db.test.find(as_class=MyClass)
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self.assertEqual(type(MyClass()), type(cursor[0]))
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# Just test attributes
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cursor = self.db.test.find({"x": re.compile("^hello.*")},
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skip=1,
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timeout=False,
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snapshot=True,
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tailable=True,
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as_class=MyClass,
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slave_okay=True,
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await_data=True,
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partial=True,
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manipulate=False,
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fields={'_id': False}).limit(2)
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cursor.add_option(64)
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cursor2 = cursor.clone()
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self.assertEqual(cursor._Cursor__skip, cursor2._Cursor__skip)
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self.assertEqual(cursor._Cursor__limit, cursor2._Cursor__limit)
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self.assertEqual(cursor._Cursor__timeout, cursor2._Cursor__timeout)
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self.assertEqual(cursor._Cursor__snapshot, cursor2._Cursor__snapshot)
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self.assertEqual(cursor._Cursor__tailable, cursor2._Cursor__tailable)
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self.assertEqual(type(cursor._Cursor__as_class),
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type(cursor2._Cursor__as_class))
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self.assertEqual(cursor._Cursor__slave_okay,
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cursor2._Cursor__slave_okay)
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self.assertEqual(cursor._Cursor__await_data,
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cursor2._Cursor__await_data)
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self.assertEqual(cursor._Cursor__partial, cursor2._Cursor__partial)
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self.assertEqual(cursor._Cursor__manipulate,
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cursor2._Cursor__manipulate)
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self.assertEqual(cursor._Cursor__query_flags,
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cursor2._Cursor__query_flags)
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# Shallow copies can so can mutate
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cursor2 = copy.copy(cursor)
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cursor2._Cursor__fields['cursor2'] = False
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self.assertTrue('cursor2' in cursor._Cursor__fields)
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# Deepcopies and shouldn't mutate
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cursor3 = copy.deepcopy(cursor)
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cursor3._Cursor__fields['cursor3'] = False
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self.assertFalse('cursor3' in cursor._Cursor__fields)
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cursor4 = cursor.clone()
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cursor4._Cursor__fields['cursor4'] = False
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self.assertFalse('cursor4' in cursor._Cursor__fields)
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|
|
# Test memo when deepcopying queries
|
|
query = {"hello": "world"}
|
|
query["reflexive"] = query
|
|
cursor = self.db.test.find(query)
|
|
|
|
cursor2 = copy.deepcopy(cursor)
|
|
|
|
self.assertNotEqual(id(cursor._Cursor__spec),
|
|
id(cursor2._Cursor__spec))
|
|
self.assertEqual(id(cursor2._Cursor__spec['reflexive']),
|
|
id(cursor2._Cursor__spec))
|
|
self.assertEqual(len(cursor2._Cursor__spec), 2)
|
|
|
|
# Ensure hints are cloned as the correct type
|
|
cursor = self.db.test.find().hint([('z', 1), ("a", 1)])
|
|
cursor2 = copy.deepcopy(cursor)
|
|
self.assertTrue(isinstance(cursor2._Cursor__hint, SON))
|
|
self.assertEqual(cursor._Cursor__hint, cursor2._Cursor__hint)
|
|
|
|
def test_deepcopy_cursor_littered_with_regexes(self):
|
|
|
|
cursor = self.db.test.find({"x": re.compile("^hmmm.*"),
|
|
"y": [re.compile("^hmm.*")],
|
|
"z": {"a": [re.compile("^hm.*")]},
|
|
re.compile("^key.*"): {"a": [re.compile("^hm.*")]}})
|
|
|
|
cursor2 = copy.deepcopy(cursor)
|
|
self.assertEqual(cursor._Cursor__spec, cursor2._Cursor__spec)
|
|
|
|
def test_add_remove_option(self):
|
|
cursor = self.db.test.find()
|
|
self.assertEqual(0, cursor._Cursor__query_options())
|
|
cursor.add_option(2)
|
|
cursor2 = self.db.test.find(tailable=True)
|
|
self.assertEqual(2, cursor2._Cursor__query_options())
|
|
self.assertEqual(cursor._Cursor__query_options(),
|
|
cursor2._Cursor__query_options())
|
|
cursor.add_option(32)
|
|
cursor2 = self.db.test.find(tailable=True, await_data=True)
|
|
self.assertEqual(34, cursor2._Cursor__query_options())
|
|
self.assertEqual(cursor._Cursor__query_options(),
|
|
cursor2._Cursor__query_options())
|
|
cursor.add_option(128)
|
|
cursor2 = self.db.test.find(tailable=True,
|
|
await_data=True).add_option(128)
|
|
self.assertEqual(162, cursor2._Cursor__query_options())
|
|
self.assertEqual(cursor._Cursor__query_options(),
|
|
cursor2._Cursor__query_options())
|
|
|
|
self.assertEqual(162, cursor._Cursor__query_options())
|
|
cursor.add_option(128)
|
|
self.assertEqual(162, cursor._Cursor__query_options())
|
|
|
|
cursor.remove_option(128)
|
|
cursor2 = self.db.test.find(tailable=True, await_data=True)
|
|
self.assertEqual(34, cursor2._Cursor__query_options())
|
|
self.assertEqual(cursor._Cursor__query_options(),
|
|
cursor2._Cursor__query_options())
|
|
cursor.remove_option(32)
|
|
cursor2 = self.db.test.find(tailable=True)
|
|
self.assertEqual(2, cursor2._Cursor__query_options())
|
|
self.assertEqual(cursor._Cursor__query_options(),
|
|
cursor2._Cursor__query_options())
|
|
|
|
self.assertEqual(2, cursor._Cursor__query_options())
|
|
cursor.remove_option(32)
|
|
self.assertEqual(2, cursor._Cursor__query_options())
|
|
|
|
def test_count_with_fields(self):
|
|
self.db.test.drop()
|
|
self.db.test.save({"x": 1})
|
|
|
|
if not version.at_least(self.db.connection, (1, 1, 3, -1)):
|
|
for _ in self.db.test.find({}, ["a"]):
|
|
self.fail()
|
|
|
|
self.assertEqual(0, self.db.test.find({}, ["a"]).count())
|
|
else:
|
|
self.assertEqual(1, self.db.test.find({}, ["a"]).count())
|
|
|
|
def test_bad_getitem(self):
|
|
self.assertRaises(TypeError, lambda x: self.db.test.find()[x], "hello")
|
|
self.assertRaises(TypeError, lambda x: self.db.test.find()[x], 5.5)
|
|
self.assertRaises(TypeError, lambda x: self.db.test.find()[x], None)
|
|
|
|
def test_getitem_slice_index(self):
|
|
self.db.drop_collection("test")
|
|
for i in range(100):
|
|
self.db.test.save({"i": i})
|
|
|
|
count = itertools.count
|
|
|
|
self.assertRaises(IndexError, lambda: self.db.test.find()[-1:])
|
|
self.assertRaises(IndexError, lambda: self.db.test.find()[1:2:2])
|
|
|
|
for a, b in zip(count(0), self.db.test.find()):
|
|
self.assertEqual(a, b['i'])
|
|
|
|
self.assertEqual(100, len(list(self.db.test.find()[0:])))
|
|
for a, b in zip(count(0), self.db.test.find()[0:]):
|
|
self.assertEqual(a, b['i'])
|
|
|
|
self.assertEqual(80, len(list(self.db.test.find()[20:])))
|
|
for a, b in zip(count(20), self.db.test.find()[20:]):
|
|
self.assertEqual(a, b['i'])
|
|
|
|
for a, b in zip(count(99), self.db.test.find()[99:]):
|
|
self.assertEqual(a, b['i'])
|
|
|
|
for i in self.db.test.find()[1000:]:
|
|
self.fail()
|
|
|
|
self.assertEqual(5, len(list(self.db.test.find()[20:25])))
|
|
self.assertEqual(5, len(list(self.db.test.find()[20L:25L])))
|
|
for a, b in zip(count(20), self.db.test.find()[20:25]):
|
|
self.assertEqual(a, b['i'])
|
|
|
|
self.assertEqual(80, len(list(self.db.test.find()[40:45][20:])))
|
|
for a, b in zip(count(20), self.db.test.find()[40:45][20:]):
|
|
self.assertEqual(a, b['i'])
|
|
|
|
self.assertEqual(80,
|
|
len(list(self.db.test.find()[40:45].limit(0).skip(20))
|
|
)
|
|
)
|
|
for a, b in zip(count(20),
|
|
self.db.test.find()[40:45].limit(0).skip(20)):
|
|
self.assertEqual(a, b['i'])
|
|
|
|
self.assertEqual(80,
|
|
len(list(self.db.test.find().limit(10).skip(40)[20:]))
|
|
)
|
|
for a, b in zip(count(20),
|
|
self.db.test.find().limit(10).skip(40)[20:]):
|
|
self.assertEqual(a, b['i'])
|
|
|
|
self.assertEqual(1, len(list(self.db.test.find()[:1])))
|
|
self.assertEqual(5, len(list(self.db.test.find()[:5])))
|
|
|
|
self.assertEqual(1, len(list(self.db.test.find()[99:100])))
|
|
self.assertEqual(1, len(list(self.db.test.find()[99:1000])))
|
|
self.assertEqual(0, len(list(self.db.test.find()[10:10])))
|
|
self.assertEqual(0, len(list(self.db.test.find()[:0])))
|
|
self.assertEqual(80,
|
|
len(list(self.db.test.find()[10:10].limit(0).skip(20))
|
|
)
|
|
)
|
|
|
|
self.assertRaises(IndexError, lambda: self.db.test.find()[10:8])
|
|
|
|
def test_getitem_numeric_index(self):
|
|
self.db.drop_collection("test")
|
|
for i in range(100):
|
|
self.db.test.save({"i": i})
|
|
|
|
self.assertEqual(0, self.db.test.find()[0]['i'])
|
|
self.assertEqual(50, self.db.test.find()[50]['i'])
|
|
self.assertEqual(50, self.db.test.find().skip(50)[0]['i'])
|
|
self.assertEqual(50, self.db.test.find().skip(49)[1]['i'])
|
|
self.assertEqual(50, self.db.test.find()[50L]['i'])
|
|
self.assertEqual(99, self.db.test.find()[99]['i'])
|
|
|
|
self.assertRaises(IndexError, lambda x: self.db.test.find()[x], -1)
|
|
self.assertRaises(IndexError, lambda x: self.db.test.find()[x], 100)
|
|
self.assertRaises(IndexError,
|
|
lambda x: self.db.test.find().skip(50)[x], 50)
|
|
|
|
def test_count_with_limit_and_skip(self):
|
|
if not version.at_least(self.db.connection, (1, 1, 4, -1)):
|
|
raise SkipTest("count with limit / skip requires MongoDB >= 1.1.4")
|
|
|
|
def check_len(cursor, length):
|
|
self.assertEqual(len(list(cursor)), cursor.count(True))
|
|
self.assertEqual(length, cursor.count(True))
|
|
|
|
self.db.drop_collection("test")
|
|
for i in range(100):
|
|
self.db.test.save({"i": i})
|
|
|
|
check_len(self.db.test.find(), 100)
|
|
|
|
check_len(self.db.test.find().limit(10), 10)
|
|
check_len(self.db.test.find().limit(110), 100)
|
|
|
|
check_len(self.db.test.find().skip(10), 90)
|
|
check_len(self.db.test.find().skip(110), 0)
|
|
|
|
check_len(self.db.test.find().limit(10).skip(10), 10)
|
|
check_len(self.db.test.find()[10:20], 10)
|
|
check_len(self.db.test.find().limit(10).skip(95), 5)
|
|
check_len(self.db.test.find()[95:105], 5)
|
|
|
|
def test_len(self):
|
|
self.assertRaises(TypeError, len, self.db.test.find())
|
|
|
|
def test_properties(self):
|
|
self.assertEqual(self.db.test, self.db.test.find().collection)
|
|
|
|
def set_coll():
|
|
self.db.test.find().collection = "hello"
|
|
|
|
self.assertRaises(AttributeError, set_coll)
|
|
|
|
def test_get_more(self):
|
|
db = self.db
|
|
db.drop_collection("test")
|
|
db.test.insert([{'i': i} for i in range(10)])
|
|
self.assertEqual(10, len(list(db.test.find().batch_size(5))))
|
|
|
|
def test_tailable(self):
|
|
db = self.db
|
|
db.drop_collection("test")
|
|
db.create_collection("test", capped=True, size=1000)
|
|
|
|
cursor = db.test.find(tailable=True)
|
|
|
|
db.test.insert({"x": 1})
|
|
count = 0
|
|
for doc in cursor:
|
|
count += 1
|
|
self.assertEqual(1, doc["x"])
|
|
self.assertEqual(1, count)
|
|
|
|
db.test.insert({"x": 2})
|
|
count = 0
|
|
for doc in cursor:
|
|
count += 1
|
|
self.assertEqual(2, doc["x"])
|
|
self.assertEqual(1, count)
|
|
|
|
db.test.insert({"x": 3})
|
|
count = 0
|
|
for doc in cursor:
|
|
count += 1
|
|
self.assertEqual(3, doc["x"])
|
|
self.assertEqual(1, count)
|
|
|
|
self.assertEqual(3, db.test.count())
|
|
db.drop_collection("test")
|
|
|
|
def test_distinct(self):
|
|
if not version.at_least(self.db.connection, (1, 1, 3, 1)):
|
|
raise SkipTest("distinct with query requires MongoDB >= 1.1.3")
|
|
|
|
self.db.drop_collection("test")
|
|
|
|
self.db.test.save({"a": 1})
|
|
self.db.test.save({"a": 2})
|
|
self.db.test.save({"a": 2})
|
|
self.db.test.save({"a": 2})
|
|
self.db.test.save({"a": 3})
|
|
|
|
distinct = self.db.test.find({"a": {"$lt": 3}}).distinct("a")
|
|
distinct.sort()
|
|
|
|
self.assertEqual([1, 2], distinct)
|
|
|
|
self.db.drop_collection("test")
|
|
|
|
self.db.test.save({"a": {"b": "a"}, "c": 12})
|
|
self.db.test.save({"a": {"b": "b"}, "c": 8})
|
|
self.db.test.save({"a": {"b": "c"}, "c": 12})
|
|
self.db.test.save({"a": {"b": "c"}, "c": 8})
|
|
|
|
distinct = self.db.test.find({"c": 8}).distinct("a.b")
|
|
distinct.sort()
|
|
|
|
self.assertEqual(["b", "c"], distinct)
|
|
|
|
def test_max_scan(self):
|
|
if not version.at_least(self.db.connection, (1, 5, 1)):
|
|
raise SkipTest("maxScan requires MongoDB >= 1.5.1")
|
|
|
|
self.db.drop_collection("test")
|
|
for _ in range(100):
|
|
self.db.test.insert({})
|
|
|
|
self.assertEqual(100, len(list(self.db.test.find())))
|
|
self.assertEqual(50, len(list(self.db.test.find(max_scan=50))))
|
|
self.assertEqual(50, len(list(self.db.test.find()
|
|
.max_scan(90).max_scan(50))))
|
|
|
|
def test_with_statement(self):
|
|
if sys.version_info < (2, 6):
|
|
raise SkipTest("With statement requires Python >= 2.6")
|
|
|
|
self.db.drop_collection("test")
|
|
for _ in range(100):
|
|
self.db.test.insert({})
|
|
|
|
c1 = self.db.test.find()
|
|
exec """
|
|
with self.db.test.find() as c2:
|
|
self.assertTrue(c2.alive)
|
|
self.assertFalse(c2.alive)
|
|
|
|
with self.db.test.find() as c2:
|
|
self.assertEqual(100, len(list(c2)))
|
|
self.assertFalse(c2.alive)
|
|
"""
|
|
self.assertTrue(c1.alive)
|
|
|
|
if __name__ == "__main__":
|
|
unittest.main()
|