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#!/usr/bin/env python
#
# Public Domain 2014-2020 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 wiredtiger, wttest
from wtscenario import make_scenarios
# test_metadata_cursor01.py
# Metadata cursor operations
# Basic smoke-test of metadata cursor: test backward and forward iteration
# as well as search.
class test_metadata_cursor01(wttest.WiredTigerTestCase):
"""
Test basic operations
"""
table_name1 = 'test_metadata_cursor01'
scenarios = make_scenarios([
('plain', {'metauri' : 'metadata:'}),
('create', {'metauri' : 'metadata:create'}),
])
def genkey(self, i):
if self.tablekind == 'row':
return 'key' + str(i)
else:
return self.recno(i+1)
def genvalue(self, i):
if self.tablekind == 'fix':
return int(i & 0xff)
else:
return 'value' + str(i)
def assertCursorHasNoKeyValue(self, cursor):
keymsg = '/requires key be set/'
valuemsg = '/requires value be set/'
self.assertRaisesWithMessage(
wiredtiger.WiredTigerError, cursor.get_key, keymsg)
self.assertRaisesWithMessage(
wiredtiger.WiredTigerError, cursor.get_value, valuemsg)
def session_create(self, name, args):
"""
session.create, but report errors more completely
"""
try:
self.session.create(name, args)
except:
print('**** ERROR in session.create("' + name + '","' + args + '") ***** ')
raise
# Create and populate the object, returning an open cursor.
def create_table(self):
tablearg = 'table:' + self.table_name1
create_args = 'key_format=S,value_format=S'
self.pr('creating session: ' + create_args)
self.session_create(tablearg, create_args)
self.pr('creating cursor')
# Forward iteration.
def test_forward_iter(self):
self.create_table()
cursor = self.session.open_cursor(self.metauri, None, None)
self.assertCursorHasNoKeyValue(cursor)
while True:
nextret = cursor.next()
if nextret != 0:
break
self.assertIsNotNone(cursor.get_key())
self.assertIsNotNone(cursor.get_value())
self.assertEqual(nextret, wiredtiger.WT_NOTFOUND)
cursor.reset()
self.assertCursorHasNoKeyValue(cursor)
cursor.close()
# Backward iteration.
def test_backward_iter(self):
self.create_table()
cursor = self.session.open_cursor(self.metauri, None, None)
self.assertCursorHasNoKeyValue(cursor)
while True:
prevret = cursor.prev()
if prevret != 0:
break
self.assertIsNotNone(cursor.get_key())
self.assertIsNotNone(cursor.get_value())
self.assertEqual(prevret, wiredtiger.WT_NOTFOUND)
self.assertCursorHasNoKeyValue(cursor)
cursor.close()
# Test search
def test_search(self):
self.create_table()
cursor = self.session.open_cursor(self.metauri, None, None)
self.assertCursorHasNoKeyValue(cursor)
# Ensure the 'special' metadata metadata is found.
value = cursor['metadata:']
self.assertTrue(value.find('key_format') != -1)
# Ensure the metadata for the table we created is found
value = cursor['table:' + self.table_name1]
self.assertTrue(value.find('key_format') != -1)
if __name__ == '__main__':
wttest.run()
|
