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#!/usr/bin/env python
#
# Public Domain 2014-present MongoDB, Inc.
# Public Domain 2008-2014 WiredTiger, Inc.
#
# This is free and unencumbered software released into the public domain.
#
# Anyone is free to copy, modify, publish, use, compile, sell, or
# distribute this software, either in source code form or as a compiled
# binary, for any purpose, commercial or non-commercial, and by any
# means.
#
# In jurisdictions that recognize copyright laws, the author or authors
# of this software dedicate any and all copyright interest in the
# software to the public domain. We make this dedication for the benefit
# of the public at large and to the detriment of our heirs and
# successors. We intend this dedication to be an overt act of
# relinquishment in perpetuity of all present and future rights to this
# software under copyright law.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
# IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
# OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
# ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
# OTHER DEALINGS IN THE SOFTWARE.
import wttest
from wtscenario import make_scenarios
from wtbound import set_prefix_bound, bound_base
# test_cursor_bound15.py
# This test checks the edge case that a search_near call with bounds and prefix key
# will return the right value of exact.
class test_cursor_bound15(bound_base):
key_format_values = [
('var_string', dict(key_format='S')),
('byte_array', dict(key_format='u')),
]
eviction = [
('eviction', dict(eviction=True)),
('no eviction', dict(eviction=False)),
]
scenarios = make_scenarios(key_format_values)
def check_key(self, key):
if self.key_format == 'u':
return key.encode()
elif self.key_format == '10s':
return key.ljust(10, "\x00")
else:
return key
def test_cursor_bound(self):
uri = 'table:test_cursor_bound'
self.session.create(uri, 'key_format={},value_format=S'.format(self.key_format))
cursor = self.session.open_cursor(uri)
cursor2 = self.session.open_cursor(uri, None, "debug=(release_evict=true)")
# Basic character array.
l = "abcdefghijklmnopqrstuvwxyz"
# Insert keys aaa -> aaz with timestamp 200.
prefix = "aa"
self.session.begin_transaction()
for k in range (0, 25):
key = prefix + l[k]
cursor[key] = key
self.session.commit_transaction('commit_timestamp=' + self.timestamp_str(200))
# Insert key aaz with timestamp 50.
self.session.begin_transaction()
cursor[prefix + "z"] = prefix + "z"
self.session.commit_transaction('commit_timestamp=' + self.timestamp_str(50))
if self.eviction:
# Evict the whole range.
for k in range (0, 26):
cursor2.set_key(prefix + l[k])
self.assertEqual(cursor2.search(), 0)
self.assertEqual(cursor2.reset(), 0)
# Begin transaction at timestamp 250, all keys should be visible.
self.session.begin_transaction('read_timestamp=' + self.timestamp_str(250))
cursor3 = self.session.open_cursor(uri)
cursor3.reset()
# Test with only lower bound set.
self.assertEqual(self.set_bounds(cursor3, "aab", "lower"), 0)
cursor3.set_key("ab")
self.assertEqual(cursor3.search_near(), -1)
self.assertEqual(cursor3.get_key(), self.check_key("aaz"))
cursor3.reset()
self.assertEqual(self.set_bounds(cursor3, "aac", "lower"), 0)
cursor3.set_key("ab")
self.assertEqual(cursor3.search_near(), -1)
self.assertEqual(cursor3.get_key(), self.check_key("aaz"))
cursor3.reset()
self.assertEqual(self.set_bounds(cursor3, "aaz", "lower", True), 0)
cursor3.set_key("aaz")
self.assertEqual(cursor3.search_near(), 0)
self.assertEqual(cursor3.get_key(), self.check_key("aaz"))
cursor3.reset()
self.assertEqual(self.set_bounds(cursor3, "a", "lower"), 0)
cursor3.set_key("aa")
self.assertEqual(cursor3.search_near(), 1)
self.assertEqual(cursor3.get_key(), self.check_key("aaa"))
cursor3.reset()
# Test with only upper bound set.
self.assertEqual(self.set_bounds(cursor3, "aac", "upper", True), 0)
cursor3.set_key("aad")
self.assertEqual(cursor3.search_near(), -1)
self.assertEqual(cursor3.get_key(), self.check_key("aac"))
cursor3.reset()
self.assertEqual(self.set_bounds(cursor3, "aaz", "upper"), 0)
cursor3.set_key("aac")
self.assertEqual(cursor3.search_near(), 0)
self.assertEqual(cursor3.get_key(), self.check_key("aac"))
cursor3.reset()
self.assertEqual(self.set_bounds(cursor3, "ac", "upper"), 0)
cursor3.set_key("aa")
self.assertEqual(cursor3.search_near(), 1)
self.assertEqual(cursor3.get_key(), self.check_key("aaa"))
cursor3.reset()
# Test with both bounds set.
self.assertEqual(self.set_bounds(cursor3, "aaa", "lower"), 0)
self.assertEqual(self.set_bounds(cursor3, "aad", "upper"), 0)
cursor3.set_key("aae")
self.assertEqual(cursor3.search_near(), -1)
self.assertEqual(cursor3.get_key(), self.check_key("aad"))
cursor3.reset()
self.assertEqual(self.set_bounds(cursor3, "aaa", "lower"), 0)
self.assertEqual(self.set_bounds(cursor3, "aae", "upper"), 0)
cursor3.set_key("aad")
self.assertEqual(cursor3.search_near(), 0)
self.assertEqual(cursor3.get_key(), self.check_key("aad"))
cursor3.reset()
self.assertEqual(self.set_bounds(cursor3, "aac", "lower", True), 0)
self.assertEqual(self.set_bounds(cursor3, "aaz", "upper", True), 0)
cursor3.set_key("aab")
self.assertEqual(cursor3.search_near(), 1)
self.assertEqual(cursor3.get_key(), self.check_key("aac"))
cursor3.reset()
# Test with prefix bounds set.
# Search near for aaza, with prefix bounds aaa should return the closest visible key: aaz.
set_prefix_bound(self, cursor3, "aaz")
self.session.breakpoint()
cursor3.set_key("aaza")
self.assertEqual(cursor3.search_near(), -1)
self.assertEqual(cursor3.get_key(), self.check_key("aaz"))
cursor3.reset()
# Search near for ab, with prefix bounds "aaa" should return the closest visible key: aaa.
set_prefix_bound(self, cursor3, "aaa")
self.session.breakpoint()
cursor3.set_key("ab")
self.assertEqual(cursor3.search_near(), -1)
self.assertEqual(cursor3.get_key(), self.check_key("aaa"))
cursor3.reset()
# Search near for aac, should return the closest visible key: aac.
set_prefix_bound(self, cursor3, "a")
self.session.breakpoint()
cursor3.set_key("aac")
self.assertEqual(cursor3.search_near(), 0)
self.assertEqual(cursor3.get_key(), self.check_key("aac"))
cursor3.reset()
# Search near for aa, should return the closest visible key: aaa.
set_prefix_bound(self, cursor3, "aaa")
self.session.breakpoint()
cursor3.set_key("aa")
self.assertEqual(cursor3.search_near(), 1)
self.assertEqual(cursor3.get_key(), self.check_key("aaa"))
cursor3.reset()
cursor3.close()
self.session.commit_transaction()
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